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CN115126609B - Engine air inlet control system and method - Google Patents

Engine air inlet control system and method Download PDF

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Publication number
CN115126609B
CN115126609B CN202110605917.4A CN202110605917A CN115126609B CN 115126609 B CN115126609 B CN 115126609B CN 202110605917 A CN202110605917 A CN 202110605917A CN 115126609 B CN115126609 B CN 115126609B
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CN
China
Prior art keywords
air inlet
valve position
current
humidity
engine
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Active
Application number
CN202110605917.4A
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Chinese (zh)
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CN115126609A (en
Inventor
王小平
曹万
王红明
梁世豪
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Wuhan Finemems Inc
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Wuhan Finemems Inc
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Publication date
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Priority to CN202110605917.4A priority Critical patent/CN115126609B/en
Publication of CN115126609A publication Critical patent/CN115126609A/en
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Publication of CN115126609B publication Critical patent/CN115126609B/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0002—Controlling intake air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
    • F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/04—Engine intake system parameters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/04—Engine intake system parameters
    • F02D2200/0414—Air temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/04—Engine intake system parameters
    • F02D2200/0418—Air humidity
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

The invention discloses an engine air inlet control system and method. The system comprises: the air inlet pipeline is communicated with an air inlet of the engine, an air inlet branch pipeline communicated with the air inlet pipeline through a first regulating valve, a humidity sensor and a controller connected with the first regulating valve and the humidity sensor; the controller receives the current temperature of the air inlet detected by the temperature sensor, determines preset humidity corresponding to the current working condition, and sends a signal to the first regulating valve when the current humidity is greater than the preset humidity, so that the first regulating valve is regulated to a corresponding valve position, the air in the air inlet pipeline and the air in the air inlet branch are mixed and transmitted to the air inlet of the engine, and the air in the air inlet branch is dehumidified air with target humidity. According to the invention, the valve position of the first regulating valve is controlled according to the current working condition, and the flow of the dehumidified gas entering the air inlet pipeline is controlled, so that the humidity of the mixed gas accords with the current working condition, the actual air inlet humidity of the engine is monitored and controlled, and the working efficiency of the engine is improved.

Description

Engine air inlet control system and method
Technical Field
The invention relates to the technical field of automobiles, in particular to an engine air inlet control system and method.
Background
An engine is one of the important components in an automobile and serves to power the automobile. When the engine works, the influence factors of the working efficiency mainly comprise air inlet temperature, air inlet humidity and air inlet pressure, and the existing automobile cannot monitor and control the actual air inlet condition of the engine, so that the working efficiency of the engine is low.
The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present invention and is not intended to represent an admission that the foregoing is prior art.
Disclosure of Invention
The invention mainly aims to provide an engine air inlet control system and method, and aims to solve the technical problem that the working efficiency of an engine is low because the existing automobile cannot monitor and control the actual air inlet condition of the engine.
In order to achieve the above object, the present invention provides an engine intake control system including: the device comprises an air inlet pipeline, an air inlet branch, a first regulating valve, a humidity sensor and a controller;
The air inlet pipeline is communicated with an air inlet of the engine, the air inlet branch is communicated with the air inlet pipeline through the first regulating valve, the humidity sensor is arranged at the air inlet of the engine, and the controller is connected with the first regulating valve and the humidity sensor;
the humidity sensor is used for acquiring the current humidity of an air inlet of the engine and sending the current humidity to the controller;
The controller is used for determining a current working condition according to the running parameters of the vehicle, determining corresponding preset humidity according to the current working condition, and sending a corresponding first valve position control signal to the first regulating valve according to the current humidity and the preset humidity when the current humidity is larger than the preset humidity;
and the first regulating valve is used for regulating the valve position to a corresponding valve position when the first valve position control signal is received, so that the gas in the air inlet pipeline and the gas in the air inlet branch are mixed, and the mixed gas is transmitted to the air inlet of the engine, wherein the gas in the air inlet branch is dehumidified gas with target humidity.
Optionally, the first adjusting valve is further used for feeding back a current valve position value to the controller;
the controller is further configured to determine a corresponding humidity difference value according to the current humidity and the preset humidity when the current humidity is greater than the preset humidity, search a corresponding target valve position value according to the humidity difference value through a first calibration table, and send a corresponding first valve position control signal to the first regulating valve according to the target valve position value when the sum of the current valve position value and the target valve position value is less than or equal to a maximum valve position value corresponding to the first regulating valve.
Optionally, the engine air inlet control system further comprises a dehumidifier, wherein the dehumidifier is arranged in the air inlet branch and is connected with the controller;
The controller is further configured to send a corresponding dehumidification control signal to the dehumidifier when the sum of the current valve position value and the target valve position value is greater than a maximum valve position value corresponding to the first regulating valve;
the dehumidifier is used for dehumidifying the gas in the gas inlet branch when the dehumidification control signal is received so as to reduce the target humidity of the gas in the gas inlet branch.
Optionally, the engine air intake control system further comprises a temperature sensor;
The temperature sensor is provided with an air inlet of the engine, and the controller is connected with the temperature sensor;
The temperature sensor is used for acquiring the current temperature of an air inlet of the engine and sending the current temperature to the controller;
the controller is further configured to determine a corresponding preset temperature according to the current working condition, and send a corresponding second valve position control signal to the first valve position control valve according to the current temperature and the preset temperature when the current temperature is greater than the preset temperature;
And the first regulating valve is used for regulating the valve position to a corresponding valve position when the second valve position control signal is received, so that the gas in the air inlet pipeline and the gas in the air inlet branch are mixed, and the mixed gas is transmitted to the air inlet of the engine, wherein the gas in the air inlet branch is the cooling gas with the target temperature.
Optionally, the first adjusting valve is further used for feeding back a current valve position value to the controller;
The controller is further configured to determine a corresponding temperature difference value according to the current temperature and the preset temperature when the current temperature is greater than the preset temperature, search a corresponding expected valve position value according to the temperature difference value through a second calibration table, and send a corresponding second valve position control signal to the first regulating valve according to the expected valve position value when the sum of the current valve position value and the expected valve position value is less than or equal to a maximum valve position value corresponding to the first regulating valve.
Optionally, the engine air inlet control system further comprises a cooler, and the cooler is arranged in the air inlet branch and connected with the controller;
the controller is further configured to send a corresponding cooling control signal to the cooler when the sum of the current valve position value and the expected valve position value is greater than a maximum valve position value corresponding to the first regulating valve;
and the cooler is used for cooling the gas in the gas inlet branch when the cooling control signal is received so as to reduce the target temperature of the gas in the gas inlet branch.
Optionally, the engine air inlet control system further comprises a pressure sensor and a second regulating valve, wherein the pressure sensor is arranged at an air inlet of the engine, and the air inlet pipeline is communicated with the air inlet of the engine through the second regulating valve;
the pressure sensor is used for acquiring a current pressure value of an air inlet of the engine and sending the current pressure value to the controller;
The controller is further used for determining a corresponding preset pressure value according to the current working condition, and sending a pressure regulation control signal to the second regulating valve when the current pressure value is not matched with the preset pressure value;
and the second regulating valve is used for regulating the second regulating valve to a corresponding position according to the pressure regulating control signal when the pressure regulating control signal is received.
Optionally, the controller is further configured to determine a pressure difference value according to the current pressure value and the preset pressure value when the current pressure value is not matched with the preset pressure value, search a corresponding valve position adjustment parameter according to the pressure difference value through a third calibration table, and send a pressure adjustment control signal to the second adjustment valve according to the valve position adjustment parameter.
In addition, in order to achieve the above object, the present invention also proposes an engine intake control method that is applied to an engine intake control system as described above, the engine intake control system comprising: the device comprises an air inlet pipeline, an air inlet branch, a first regulating valve, a humidity sensor and a controller;
The air inlet pipeline is communicated with an air inlet of the engine, the air inlet branch is communicated with the air inlet pipeline through the first regulating valve, the humidity sensor is arranged at the air inlet of the engine, and the controller is connected with the first regulating valve and the humidity sensor;
The engine air intake control method comprises the following steps:
The humidity sensor acquires the current humidity of an air inlet of the engine and sends the current humidity to the controller;
The controller determines a current working condition according to the running parameters of the vehicle, determines corresponding preset humidity according to the current working condition, and sends a corresponding first valve position control signal to the first regulating valve according to the current humidity and the preset humidity when the current humidity is larger than the preset humidity;
And when the first valve position control signal is received by the first regulating valve, the valve position is adjusted to be at a corresponding valve position, so that the gas in the air inlet pipeline and the gas in the air inlet branch are mixed, and the mixed gas is transmitted to an air inlet of the engine, wherein the gas in the air inlet branch is dehumidified gas with target humidity.
Optionally, when the current humidity is greater than the preset humidity, the controller sends a corresponding first valve position control signal to the first adjusting valve according to the current humidity and the preset humidity, including:
The first regulating valve feeds back a current valve position value to the controller;
and when the sum of the current valve position value and the target valve position value is smaller than or equal to the maximum valve position value corresponding to the first regulating valve, a corresponding first valve position control signal is sent to the first regulating valve according to the target valve position value.
The engine air inlet control system comprises an air inlet pipeline, a first regulating valve, an air inlet branch, a humidity sensor and a controller, wherein the air inlet pipeline is communicated with an air inlet of an engine; the humidity sensor acquires the current humidity of an air inlet of the engine and sends the current humidity to the controller; the controller determines a current working condition according to the running parameters of the vehicle, determines corresponding preset humidity according to the current working condition, and sends a corresponding first valve position control signal to the first regulating valve according to the current humidity and the preset humidity when the current humidity is greater than the preset humidity; when the first valve position control signal is received by the first regulating valve, the valve position is adjusted to be larger than the corresponding valve position, so that the gas in the air inlet pipeline and the gas in the air inlet branch are mixed, and the mixed gas is transmitted to the air inlet of the engine, wherein the gas in the air inlet branch is dehumidified gas with target humidity. Through the mode, the current humidity of the air inlet of the engine is obtained through the humidity sensor, the preset humidity is determined according to the current working condition, when the humidity of the air inlet of the engine does not meet the requirement of the current working condition, the valve position of the first regulating valve is adjusted, the flow of dehumidified gas entering the air inlet pipeline is controlled, the humidity of mixed gas meets the current working condition, the mixed gas meeting the requirement is transmitted to the air inlet of the engine, the actual air inlet humidity of the engine is monitored and controlled, the problem that the combustion speed is reduced due to overhigh humidity of air entering the engine is avoided, and the working efficiency of the engine is improved.
Drawings
FIG. 1 is a block diagram of a first embodiment of an engine air intake control system according to the present invention;
FIG. 2 is a block diagram of a second embodiment of an engine air intake control system according to the present invention;
Fig. 3 is a flowchart of a first embodiment of an engine intake control method according to the present invention.
Reference numerals illustrate:
Reference numerals Name of the name Reference numerals Name of the name
10 Air inlet pipeline 70 Dehumidifier
20 Air inlet branch 80 Temperature sensor
30 First regulating valve 90 Cooling device
40 Humidity sensor 100 Pressure sensor
50 Controller for controlling a power supply 110 Second regulating valve
60 Air inlet of engine
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, fig. 1 is a block diagram showing the structure of a first embodiment of an engine air intake control system according to the present invention.
In this embodiment, the engine intake control system includes: an air intake line 10, an air intake branch 20, a first regulating valve 30, a humidity sensor 40, and a controller 50;
The air inlet pipeline 10 is communicated with an air inlet 60 of the engine, the air inlet branch 20 is communicated with the air inlet pipeline 10 through the first regulating valve 30, the humidity sensor 40 is arranged at the air inlet 60 of the engine, and the controller 50 is connected with the first regulating valve 30 and the humidity sensor 40. In this embodiment, the states of the first adjusting valve 30 include an open state and a plurality of valve position states, wherein the initial state is a closed state, and the first adjusting valve is adjusted to a corresponding valve position when receiving a control signal from the controller 50.
The humidity sensor 40 is configured to acquire a current humidity of an air inlet 60 of the engine, and send the current humidity to the controller 50. In this embodiment, the humidity sensor 40 is installed at the air inlet 60 of the engine, acquires the humidity information of the air inlet 60 of the engine in real time, and sends the humidity information to the controller 50, and the humidity sensor 40 collects under the control of the controller 50, which may be a specific process that when the controller 50 receives an engine start command, and sending a detection signal to the humidity sensor 40, wherein the humidity sensor 40 performs humidity information acquisition according to the detection signal, and when the controller 50 detects that the current working condition changes, sending the detection signal to the humidity sensor 40 again, so that the humidity sensor 40 acquires humidity information again according to the detection signal. In addition, in a specific implementation, the detection signal sent by the controller 50 may include an acquisition frequency, and the humidity sensor 40 performs humidity information acquisition based on the acquisition frequency.
The controller 50 is configured to determine a current working condition according to an operation parameter of the vehicle, determine a corresponding preset humidity according to the current working condition, and send a corresponding first valve position control signal to the first regulating valve 30 according to the current humidity and the preset humidity when the current humidity is greater than the preset humidity. In this embodiment, the controller 50 may be a vehicle-mounted computer, or may be another controller 50 communicatively connected to the vehicle-mounted computer, where in this embodiment, the controller 50 is connected to the vehicle-mounted computer to obtain, through a CAN bus of the vehicle-mounted computer, a vehicle operation parameter detected by a sensor on the vehicle, determine a current working condition based on the vehicle operation parameter, and connect the controller 50 to a preset memory to obtain mapping table information stored in the preset memory in advance, and in a specific implementation, the preset memory stores a mapping table between a working condition and humidity, and the controller 50 queries the mapping table between the working condition and the humidity according to the current working condition, thereby determining a preset humidity corresponding to the current working condition.
Specifically, the first regulating valve 30 is further configured to feed back a current valve position value to the controller 50. In this embodiment, the adjusting valve includes a plurality of valve values, for example, the adjusting valve has ten valve positions, and when the current valve position value is 0, the adjusting valve is indicated to be in a closed state, and when the current valve position value is 9, the adjusting valve is indicated to be in a full open state.
The controller 50 is further configured to determine a corresponding humidity difference value according to the current humidity and the preset humidity when the current humidity is greater than the preset humidity, search a corresponding target valve position value according to the humidity difference value through a first calibration table, and send a corresponding first valve position control signal to the first regulating valve 30 according to the target valve position value when the sum of the current valve position value and the target valve position value is less than or equal to a maximum valve position value corresponding to the first regulating valve 30. In this embodiment, in order to ensure that the mixed gas humidity accords with the current working condition, the humidity difference and the valve position of the first regulating valve 30 are calibrated in advance, a first calibration table is set, the first calibration table contains the humidity difference and the corresponding valve position, when the current humidity is greater than the preset humidity, the controller 50 takes the difference between the current humidity and the preset humidity as the humidity difference, and determines the valve position of the first regulating valve 30, namely the target valve position, from the first calibration table according to the humidity difference.
It may be appreciated that when the sum of the current valve position value and the target valve position value is less than or equal to the maximum valve position value corresponding to the first adjusting valve 30, the valve position of the first adjusting valve 30 is characterized to be adjusted to meet the requirement of the current working condition, for example, the first adjusting valve 30 feeds back that the current valve position value is 2, the controller 50 checks that the target valve position value is 3 through the first calibration table, the maximum valve position value of the first adjusting valve 30 is 9, and the sum of the current valve position value and the target valve position value is less than or equal to the maximum valve position value corresponding to the first adjusting valve 30. When the sum of the current valve position value and the target valve position value is greater than the maximum valve position value corresponding to the first regulating valve 30, the valve position of the first regulating valve 30 is not enough to meet the requirement of the current working condition, and the dehumidifier 70 is provided in the embodiment to dehumidify the gas in the air inlet branch 20, so that the humidity of the mixed gas is further reduced.
The first adjusting valve 30 is configured to, when receiving the first valve position control signal, adjust the valve position to a corresponding valve position, so that the gas in the air intake pipeline 10 and the gas in the air intake branch 20 are mixed, and the mixed gas is transmitted to the air intake 60 of the engine, where the gas in the air intake branch 20 is dehumidified gas with target humidity. In this embodiment, the air in the air intake branch 20 is dehumidified air with humidity set in advance as target humidity, the target humidity is determined by calibration, in a specific implementation, the target humidity is synchronous with calibration of the first calibration table, and the target humidity is associated with a target valve position value in the first calibration table, for example, the target valve position value is smaller when the target humidity is very low, and the target valve position value is larger when the target humidity is low. The target humidity is smaller than the preset humidity corresponding to any working condition.
It should be noted that, the first adjusting valve 30 receives the first valve position control signal, determines a target valve position value to be adjusted according to the first valve position control signal, and adjusts the valve position to the corresponding valve position according to the target valve position value.
Further, the engine air intake control system further includes a dehumidifier 70, wherein the dehumidifier 70 is disposed in the air intake branch 20 and is connected with the controller 50;
The controller 50 is further configured to send a corresponding dehumidification control signal to the dehumidifier 70 when the sum of the current valve position value and the target valve position value is greater than a maximum valve position value corresponding to the first regulating valve 30. In this embodiment, the dehumidifier 70 is in an on state in the initial state, and the specific process is as follows: when receiving the engine start command, the controller 50 sends a start signal to the dehumidifier 70, and the dehumidifier 70 performs a default dehumidification operation according to the start signal, dehumidifies the gas in the intake branch 20, and maintains the humidity of the gas in the intake branch 20 at the target humidity. When the sum of the current valve position value and the target valve position value is greater than the maximum valve position value corresponding to the first regulating valve 30, the controller 50 sends a dehumidification control signal to the dehumidifier 70 so as to increase the dehumidification force of the dehumidifier 70.
The dehumidifier 70 is configured to dehumidify the gas in the air intake branch 20 when receiving the dehumidification control signal, so as to reduce the target humidity of the gas in the air intake branch 20. In this embodiment, the dehumidifier 70 reduces the humidity of the gas in the air inlet branch 20 under the control of the dehumidification control signal, so that the humidity of the mixed gas is further reduced after the air inlet branch 20 is mixed with the air in the air inlet pipeline 10, so as to meet the requirement of the current working condition. The embodiment proposes an engine intake control system that reduces intake air humidity against the problem of combustion speed reduction caused by excessive intake air humidity.
The engine intake control system of the present embodiment includes an intake pipe 10 communicating with an intake port 60 of the engine, a first regulator valve 30, an intake branch 20 communicating with the intake pipe 10 through the first regulator valve 30, a humidity sensor 40 provided at the intake port 60 of the engine, and a controller 50 connected to the first regulator valve 30 and the humidity sensor 40; the humidity sensor 40 acquires the current humidity of the air inlet 60 of the engine, and sends the current humidity to the controller 50; the controller 50 determines a current working condition according to the running parameters of the vehicle, determines a corresponding preset humidity according to the current working condition, and sends a corresponding first valve position control signal to the first regulating valve 30 according to the current humidity and the preset humidity when the current humidity is greater than the preset humidity; when the first valve position control signal is received by the first regulating valve 30, the valve position is adjusted to be greater than the corresponding valve position, so that the gas in the air inlet pipeline 10 and the gas in the air inlet branch 20 are mixed, and the mixed gas is transmitted to the air inlet 60 of the engine, wherein the gas in the air inlet branch 20 is dehumidified gas with target humidity. Through the above mode, the current humidity of the air inlet of the engine is obtained through the humidity sensor 40, the preset humidity is determined according to the current working condition, when the humidity of the air inlet 60 of the engine does not meet the requirement of the current working condition, the valve position of the first regulating valve 30 is regulated, the flow rate of dehumidified gas entering the air inlet pipeline 10 is controlled, the humidity of mixed gas meets the current working condition, the mixed gas meeting the requirement is transmitted to the air inlet 60 of the engine, the actual air inlet humidity of the engine is monitored and controlled, the problem that the combustion speed is reduced due to the fact that the humidity of air entering the engine is too high is avoided, and the working efficiency of the engine is improved.
Referring to fig. 2, fig. 2 is a block diagram of a second embodiment of an engine air intake control system according to the present invention.
Based on the first embodiment described above, the engine intake control system of the present embodiment further includes a temperature sensor 80;
the temperature sensor 80 is provided with an air inlet 60 of the engine, and the controller 50 is connected with the temperature sensor 80;
The temperature sensor 80 is configured to obtain a current temperature of an intake port 60 of the engine, and send the current temperature to the controller 50. In this embodiment, the temperature sensor 80 is installed at the air inlet 60 of the engine, acquires temperature information of the air inlet 60 of the engine in real time, and sends the temperature information to the controller 50, and the temperature sensor 80 is collected under the control of the controller 50, and the specific process may be that when the controller 50 receives an engine start command, the temperature sensor 80 is provided with a detection signal, the temperature sensor 80 collects temperature information according to the detection signal, and when the controller 50 detects that the current working condition changes, the temperature sensor 80 is provided with a detection signal again, so that the temperature sensor 80 collects temperature information again according to the detection signal. In addition, in a specific implementation, the detection signal sent by the controller 50 may include an acquisition frequency, and the temperature sensor 80 performs temperature information acquisition based on the acquisition frequency.
The controller 50 is further configured to determine a corresponding preset temperature according to the current working condition, and send a corresponding second valve position control signal to the first regulating valve 30 according to the current temperature and the preset temperature when the current temperature is greater than the preset temperature. In this embodiment, the controller 50 is connected to the vehicle-mounted computer to obtain the vehicle operation parameters detected by the sensor on the vehicle through the vehicle-mounted computer CAN bus, determine the current working condition based on the vehicle operation parameters, and the controller 50 is connected to the preset memory to obtain the mapping table information stored in the preset memory in advance, where in a specific implementation, the preset memory stores a mapping table between the working condition and the temperature, and the controller 50 queries the mapping table between the working condition and the temperature according to the current working condition, so as to determine the preset temperature corresponding to the current working condition.
Specifically, the first adjusting valve 30 is further configured to feed back a current valve position value to the controller 50;
The controller 50 is further configured to determine a corresponding temperature difference value according to the current temperature and the preset temperature when the current temperature is greater than the preset temperature, search a corresponding expected valve position value according to the temperature difference value through a second calibration table, and send a corresponding second valve position control signal to the first regulating valve 30 according to the expected valve position value when the sum of the current valve position value and the expected valve position value is less than or equal to a maximum valve position value corresponding to the first regulating valve 30. In this embodiment, in order to ensure that the temperature of the mixed gas accords with the current working condition, the temperature difference and the valve position of the first regulating valve 30 are calibrated in advance, a second calibration table is set, the second calibration table includes the temperature difference and the corresponding valve position, when the current temperature is greater than the preset temperature, the controller 50 takes the difference between the current temperature and the preset temperature as the temperature difference, and determines the valve position of the first regulating valve 30, that is, the expected valve position value, from the second calibration table according to the temperature difference.
It can be understood that when the sum of the current valve position value and the expected valve position value is smaller than or equal to the maximum valve position value corresponding to the first adjusting valve 30, the valve position of the first adjusting valve 30 is indicated to meet the requirement of the current working condition, and when the sum of the current valve position value and the expected valve position value is larger than the maximum valve position value corresponding to the first adjusting valve 30, the valve position of the first adjusting valve 30 is indicated to be insufficient to meet the requirement of the current working condition, and the cooler 90 is provided to cool the gas in the gas inlet branch 20, so that the temperature of the mixed gas is further reduced.
In a specific implementation, the controller 50 has two control modes, the first mode is that the controller 50 controls the first regulating valve 30 in real time, when the current humidity is obtained, the control valve is adjusted according to a target valve position value corresponding to a humidity difference value, and when the current temperature is obtained, the control valve is adjusted according to an expected valve position value corresponding to a temperature difference value; the second way is that the controller 50 searches the first calibration table for the target valve position value according to the humidity difference value, searches the second calibration table for the expected valve position value according to the temperature difference value, and determines the final valve position value according to the expected valve position value and the target valve position value because the humidity adjustment and the temperature conditions are required, and sends the corresponding second valve position control signal to the first adjusting valve 30 according to the final valve position value, wherein the final valve position value is the larger valve position value between the expected valve position value and the target valve position value.
The first adjusting valve 30 is configured to, when receiving the second valve position control signal, adjust the valve position to a corresponding valve position, so that the gas in the air intake pipeline 10 and the gas in the air intake branch 20 are mixed, and the mixed gas is transmitted to the air intake 60 of the engine, where the gas in the air intake branch 20 is a cooling gas with a target temperature. In this embodiment, the gas in the air intake branch 20 is a cooling gas with a temperature set in advance as a target temperature, and the target temperature is determined by calibration, and in a specific implementation, the target temperature is synchronous with calibration of the second calibration table, and the target temperature is associated with an expected valve position value in the second calibration table, for example, the expected valve position value is smaller when the target temperature is very low, and the expected valve position value is larger when the target temperature is low. The target temperature is less than the preset temperature corresponding to any working condition.
It should be noted that, the first adjusting valve 30 receives the second valve position control signal, determines the valve position value to be adjusted according to the second valve position control signal, and increases the valve position to the corresponding valve position according to the valve position value to be adjusted.
Further, the engine air intake control system further includes a cooler 90, where the cooler 90 is disposed in the air intake branch 20 and connected to the controller 50;
The controller 50 is further configured to send a corresponding cooling control signal to the cooling device 90 when the sum of the current valve position value and the expected valve position value is greater than the maximum valve position value corresponding to the first regulating valve 30. In this embodiment, the initial state of the cooler 90 is an on state, and the specific process is: when the controller 50 receives an engine start command, it sends a start signal to the cooler 90, and the cooler 90 performs a default cooling operation according to the start signal, so as to cool the gas in the intake branch 20, and maintain the temperature of the gas in the intake branch 20 at the target temperature. When the sum of the current valve position value and the expected valve position value is greater than the maximum valve position value corresponding to the first regulating valve 30, the controller 50 sends a cooling control signal to the cooler 90 so as to increase the cooling force of the cooler 90.
The temperature reducer 90 is configured to reduce the temperature of the gas in the gas inlet branch 20 when the temperature reduction control signal is received, so as to reduce the target temperature of the gas in the gas inlet branch 20. In this embodiment, the temperature reducer 90 reduces the temperature of the gas in the gas inlet branch 20 under the control of the temperature reducing control signal, so that the temperature of the mixed gas is further reduced after the gas in the gas inlet branch 20 is mixed with the gas in the gas inlet pipeline 10, so as to meet the requirement of the current working condition. The present embodiment proposes an engine intake control system that reduces the intake air temperature in the case where the intake air temperature is too high, resulting in incomplete combustion.
Further, in order to monitor and control the pressure of the air inlet of the engine, the air inlet control system of the engine further comprises a pressure sensor 100 and a second regulating valve 110, wherein the pressure sensor 100 is arranged at the air inlet 60 of the engine, and the air inlet pipeline 10 is communicated with the air inlet 60 of the engine through the second regulating valve 110;
The pressure sensor 100 is configured to obtain a current pressure value of the air intake 60 of the engine, and send the current pressure value to the controller 50. In this embodiment, the pressure sensor 100 is installed at the air inlet 60 of the engine, acquires the pressure information of the air inlet 60 of the engine in real time, and sends the pressure information to the controller 50, and the pressure sensor 100 collects under the control of the controller 50. In addition, in a specific implementation, the detection signal sent by the controller 50 may include an acquisition frequency, and the pressure sensor 100 performs pressure information acquisition based on the acquisition frequency.
The controller 50 is further configured to determine a corresponding preset pressure value according to the current working condition, and send a pressure adjustment control signal to the second adjustment valve 110 when the current pressure value does not match the preset pressure value. In this embodiment, the preset memory stores a mapping relation table between the working conditions and the pressure values, and the controller 50 queries the mapping relation table between the working conditions and the pressure values in the preset memory according to the current working conditions, so as to determine the preset pressure value corresponding to the current working conditions.
The controller 50 is further configured to determine a pressure difference value according to the current pressure value and the preset pressure value when the current pressure value is not matched with the preset pressure value, search a corresponding valve position adjustment parameter according to the pressure difference value through a third calibration table, and send a pressure adjustment control signal to the second adjustment valve 110 according to the valve position adjustment parameter. In this embodiment, the second adjusting valve 110 includes a plurality of valve positions, and the initial state may be an open state, and since the current working condition may be a working condition when the engine is started or a working condition when the vehicle is accelerating, the initial state of the second adjusting valve 110 may also be a valve position corresponding to the previous working condition.
It should be noted that, the controller 50 determines a pressure difference according to the current pressure value and the preset pressure value, if the current pressure value is greater than the preset pressure value, it is determined that the intake pressure needs to be reduced, the second adjusting valve 110 is controlled to reduce the area of the pipeline to reduce the intake pressure, if the current pressure value is smaller than the preset pressure value, it is determined that the intake pressure needs to be lifted, the second adjusting valve 110 is controlled to enlarge the area of the pipeline, if the second adjusting valve 110 is adjusted to the maximum, the second adjusting valve 110 feeds back the current state to the controller 50, so that the controller 50 obtains the current valve position of the first adjusting valve 30, and when the current valve position is smaller than the maximum valve position corresponding to the first adjusting valve 30, the first adjusting valve 30 is controlled to enlarge one valve position to lift the intake pressure.
It should be appreciated that the pressure difference may be positive or negative, and the valve position adjustment parameter is the desired valve position of the second regulator valve 110, such as a desired 2 valve position increase or a desired 2 valve position decrease. In a specific implementation, the intake pressure difference value and the expected valve position value of the second regulating valve 110 are calibrated in advance, a third calibration table is set, the third calibration table includes the intake pressure difference value and the corresponding expected valve position value, the intake pressure difference value is determined according to the current pressure value and the preset pressure value, and the expected valve position value, namely the valve position regulating parameter, is determined from the third calibration table.
The second adjusting valve 110 is configured to adjust to a corresponding position according to the pressure adjusting control signal when receiving the pressure adjusting control signal. In this embodiment, the second adjusting valve 110 determines a valve position parameter to be adjusted according to the pressure adjusting control signal, and adjusts the valve position to a corresponding position according to the valve position parameter.
The engine air intake control system of the embodiment further comprises a temperature sensor 80, wherein the temperature sensor 80 is provided with an air inlet 60 of the engine, and the controller 50 is connected with the temperature sensor 80; the temperature sensor 80 acquires the current temperature of the air intake 60 of the engine, and sends the current temperature to the controller 50; the controller 50 determines a corresponding preset temperature according to the current working condition, and when the current temperature is greater than the preset temperature, sends a corresponding second valve position control signal to the first regulating valve 30 according to the current temperature and the preset temperature; when the first regulating valve 30 receives the second valve position control signal, the valve position is adjusted to be greater than the corresponding valve position, so that the gas in the air inlet pipeline 10 and the gas in the air inlet branch 20 are mixed, and the mixed gas is transmitted to the air inlet 60 of the engine, wherein the gas in the air inlet branch 20 is the cooling gas with the target temperature. Through the above manner, when the current humidity of the air inlet of the engine is obtained through the humidity sensor 40 and the current temperature of the air inlet of the engine is obtained through the temperature sensor 80, the preset humidity and the preset temperature are determined according to the current working condition, when the humidity and the temperature of the air inlet 60 of the engine do not meet the requirement of the current working condition, the valve position of the first regulating valve 30 is regulated, the flow rate of cooling gas entering the air inlet pipeline 10 is controlled, the humidity and the temperature of mixed gas meet the current working condition, the mixed gas meeting the requirement is transmitted to the air inlet 60 of the engine, the actual air inlet humidity and the air inlet temperature of the engine are monitored and controlled, the problem that the combustion speed is reduced due to the too high humidity of air entering the engine is avoided, the problem that the air inlet temperature is not completely combusted due to the too high temperature is also avoided, and the working efficiency of the engine is improved.
Referring to fig. 3, fig. 3 is a flowchart illustrating a first embodiment of an engine air intake control method according to the present invention.
As shown in fig. 3, the engine air intake control method according to the embodiment of the present invention is applied to the engine air intake control system described above, and the engine air intake control system includes: the device comprises an air inlet pipeline, an air inlet branch, a first regulating valve, a humidity sensor and a controller;
The air inlet pipeline is communicated with an air inlet of the engine, the air inlet branch is communicated with the air inlet pipeline through the first regulating valve, the humidity sensor is arranged at the air inlet of the engine, and the controller is connected with the first regulating valve and the humidity sensor;
The engine air intake control method comprises the following steps:
Step S10: and the humidity sensor acquires the current humidity of an air inlet of the engine and sends the current humidity to the controller.
Step S20: the controller determines a current working condition according to the running parameters of the vehicle, determines corresponding preset humidity according to the current working condition, and sends a corresponding first valve position control signal to the first regulating valve according to the current humidity and the preset humidity when the current humidity is larger than the preset humidity.
Step S30: and when the first valve position control signal is received by the first regulating valve, the valve position is adjusted to be at a corresponding valve position, so that the gas in the air inlet pipeline and the gas in the air inlet branch are mixed, and the mixed gas is transmitted to an air inlet of the engine, wherein the gas in the air inlet branch is dehumidified gas with target humidity.
Specifically, when the current humidity is greater than the preset humidity, the controller sends a corresponding first valve position control signal to the first regulating valve according to the current humidity and the preset humidity, including: the first regulating valve feeds back a current valve position value to the controller; and when the sum of the current valve position value and the target valve position value is smaller than or equal to the maximum valve position value corresponding to the first regulating valve, a corresponding first valve position control signal is sent to the first regulating valve according to the target valve position value.
It should be understood that the foregoing is illustrative only and is not limiting, and that in specific applications, those skilled in the art may set the invention as desired, and the invention is not limited thereto.
The engine air inlet control system comprises an air inlet pipeline, a first regulating valve, an air inlet branch, a humidity sensor and a controller, wherein the air inlet pipeline is communicated with an air inlet of an engine; the humidity sensor acquires the current humidity of an air inlet of the engine and sends the current humidity to the controller; the controller determines a current working condition according to the running parameters of the vehicle, determines corresponding preset humidity according to the current working condition, and sends a corresponding first valve position control signal to the first regulating valve according to the current humidity and the preset humidity when the current humidity is greater than the preset humidity; when the first valve position control signal is received by the first regulating valve, the valve position is adjusted to be larger than the corresponding valve position, so that the gas in the air inlet pipeline and the gas in the air inlet branch are mixed, and the mixed gas is transmitted to the air inlet of the engine, wherein the gas in the air inlet branch is dehumidified gas with target humidity. Through the mode, the current humidity of the air inlet of the engine is obtained through the humidity sensor, the preset humidity is determined according to the current working condition, when the humidity of the air inlet of the engine does not meet the requirement of the current working condition, the valve position of the first regulating valve is adjusted, the flow of dehumidified gas entering the air inlet pipeline is controlled, the humidity of mixed gas meets the current working condition, the mixed gas meeting the requirement is transmitted to the air inlet of the engine, the actual air inlet humidity of the engine is monitored and controlled, the problem that the combustion speed is reduced due to overhigh humidity of air entering the engine is avoided, and the working efficiency of the engine is improved.
It should be noted that the above-described working procedure is merely illustrative, and does not limit the scope of the present invention, and in practical application, a person skilled in the art may select part or all of them according to actual needs to achieve the purpose of the embodiment, which is not limited herein.
In addition, technical details not described in detail in the present embodiment may refer to the engine air intake control system provided in any embodiment of the present invention, and are not described herein.
In an embodiment, the engine air intake control system further comprises a dehumidifier, wherein the dehumidifier is arranged in the air intake branch and is connected with the controller;
When the current humidity is larger than the preset humidity, the controller determines a corresponding humidity difference value according to the current humidity and the preset humidity, and searches a corresponding target valve position value through a first calibration table according to the humidity difference value, and the method further comprises:
When the sum of the current valve position value and the target valve position value is larger than the maximum valve position value corresponding to the first regulating valve, the controller sends a corresponding dehumidification control signal to the dehumidifier;
and when the dehumidifier receives the dehumidification control signal, the dehumidifier dehumidifies the gas in the air inlet branch so as to reduce the target humidity of the gas in the air inlet branch.
In one embodiment, the engine air intake control system further comprises a temperature sensor;
The temperature sensor is provided with an air inlet of the engine, and the controller is connected with the temperature sensor;
the method further comprises the steps of:
the temperature sensor obtains the current temperature of an air inlet of the engine and sends the current temperature to the controller;
The controller determines a corresponding preset temperature according to the current working condition, and when the current temperature is greater than the preset temperature, the controller sends a corresponding second valve position control signal to the first regulating valve according to the current temperature and the preset temperature;
And when the first regulating valve receives the second valve position control signal, the valve position is adjusted to be at a corresponding valve position, so that the gas in the air inlet pipeline and the gas in the air inlet branch are mixed, and the mixed gas is transmitted to an air inlet of the engine, wherein the gas in the air inlet branch is cooling gas with target temperature.
In an embodiment, when the current temperature is greater than the preset temperature, the controller sends a corresponding second valve position control signal to the first adjusting valve according to the current temperature and the preset temperature, including:
The first regulating valve feeds back a current valve position value to the controller;
And when the sum of the current valve position value and the expected valve position value is smaller than or equal to the maximum valve position value corresponding to the first regulating valve, a corresponding second valve position control signal is sent to the first regulating valve according to the expected valve position value.
In an embodiment, the engine air intake control system further comprises a cooler, wherein the cooler is arranged in the air intake branch and is connected with the controller;
when the current temperature is greater than the preset temperature, the controller determines a corresponding temperature difference value according to the current temperature and the preset temperature, and searches a corresponding expected valve position value according to the temperature difference value through a second calibration table, and then the method further comprises the steps of:
when the sum of the current valve position value and the expected valve position value is larger than the maximum valve position value corresponding to the first regulating valve, the controller sends a corresponding cooling control signal to the cooler;
and when the temperature reduction device receives the temperature reduction control signal, the temperature of the gas in the gas inlet branch is reduced so as to reduce the target temperature of the gas in the gas inlet branch.
In an embodiment, the engine air intake control system further comprises a pressure sensor and a second regulating valve, wherein the pressure sensor is arranged at an air inlet of the engine, and the air intake pipeline is communicated with the air inlet of the engine through the second regulating valve;
the method further comprises the steps of:
The pressure sensor obtains a current pressure value of an air inlet of the engine and sends the current pressure value to the controller;
The controller determines a corresponding preset pressure value according to the current working condition, and sends a pressure regulation control signal to the second regulating valve when the current pressure value is not matched with the preset pressure value;
And when the second regulating valve receives the pressure regulating control signal, the second regulating valve is regulated to a corresponding position according to the pressure regulating control signal.
In an embodiment, the controller sends a pressure adjustment control signal to the second regulator valve when the current pressure value does not match the preset pressure value, including:
And when the current pressure value is not matched with the preset pressure value, the controller determines a pressure difference value according to the current pressure value and the preset pressure value, searches a corresponding valve position adjusting parameter according to the pressure difference value through a third calibration table, and sends a pressure adjusting control signal to the second adjusting valve according to the valve position adjusting parameter.
Furthermore, it should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. Read Only Memory)/RAM, magnetic disk, optical disk) and including several instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.

Claims (2)

1. An engine air inlet control system is characterized in that, the engine intake control system includes: the device comprises an air inlet pipeline, an air inlet branch, a first regulating valve, a humidity sensor and a controller;
The air inlet pipeline is communicated with an air inlet of the engine, the air inlet branch is communicated with the air inlet pipeline through the first regulating valve, the humidity sensor is arranged at the air inlet of the engine, and the controller is connected with the first regulating valve and the humidity sensor;
the humidity sensor is used for acquiring the current humidity of an air inlet of the engine and sending the current humidity to the controller;
The controller is used for determining a current working condition according to the running parameters of the vehicle, determining corresponding preset humidity according to the current working condition, and sending a corresponding first valve position control signal to the first regulating valve according to the current humidity and the preset humidity when the current humidity is larger than the preset humidity;
The first regulating valve is used for regulating the valve position to a corresponding valve position when the first valve position control signal is received, so that the gas in the air inlet pipeline and the gas in the air inlet branch are mixed, and the mixed gas is transmitted to the air inlet of the engine, wherein the gas in the air inlet branch is dehumidified gas with target humidity;
The first regulating valve is further used for feeding back a current valve position value to the controller;
The controller is further configured to determine a corresponding humidity difference value according to the current humidity and the preset humidity when the current humidity is greater than the preset humidity, search a corresponding target valve position value according to the humidity difference value through a first calibration table, and send a corresponding first valve position control signal to the first regulating valve according to the target valve position value when the sum of the current valve position value and the target valve position value is less than or equal to a maximum valve position value corresponding to the first regulating valve;
The engine air inlet control system further comprises a dehumidifier, wherein the dehumidifier is arranged in the air inlet branch and is connected with the controller;
The controller is further configured to send a corresponding dehumidification control signal to the dehumidifier when the sum of the current valve position value and the target valve position value is greater than a maximum valve position value corresponding to the first regulating valve;
The dehumidifier is used for dehumidifying the gas in the air inlet branch when the dehumidification control signal is received so as to reduce the target humidity of the gas in the air inlet branch;
wherein the engine air intake control system further comprises a temperature sensor;
The temperature sensor is provided with an air inlet of the engine, and the controller is connected with the temperature sensor;
The temperature sensor is used for acquiring the current temperature of an air inlet of the engine and sending the current temperature to the controller;
the controller is further configured to determine a corresponding preset temperature according to the current working condition, and send a corresponding second valve position control signal to the first valve position control valve according to the current temperature and the preset temperature when the current temperature is greater than the preset temperature;
The first regulating valve is used for regulating the valve position to a corresponding valve position when the second valve position control signal is received, so that the gas in the air inlet pipeline and the gas in the air inlet branch are mixed, and the mixed gas is transmitted to the air inlet of the engine, wherein the gas in the air inlet branch is the cooling gas with the target temperature;
The first regulating valve is further used for feeding back a current valve position value to the controller;
The controller is further configured to determine a corresponding temperature difference value according to the current temperature and the preset temperature when the current temperature is greater than the preset temperature, search a corresponding expected valve position value according to the temperature difference value through a second calibration table, and send a corresponding second valve position control signal to the first regulating valve according to the expected valve position value when the sum of the current valve position value and the expected valve position value is less than or equal to a maximum valve position value corresponding to the first regulating valve;
The engine air inlet control system further comprises a cooler, wherein the cooler is arranged in the air inlet branch and is connected with the controller;
the controller is further configured to send a corresponding cooling control signal to the cooler when the sum of the current valve position value and the expected valve position value is greater than a maximum valve position value corresponding to the first regulating valve;
The temperature reducer is used for reducing the temperature of the gas in the gas inlet branch when the temperature reduction control signal is received so as to reduce the target temperature of the gas in the gas inlet branch;
The engine air inlet control system further comprises a pressure sensor and a second regulating valve, wherein the pressure sensor is arranged at an air inlet of the engine, and the air inlet pipeline is communicated with the air inlet of the engine through the second regulating valve;
the pressure sensor is used for acquiring a current pressure value of an air inlet of the engine and sending the current pressure value to the controller;
The controller is further used for determining a corresponding preset pressure value according to the current working condition, and sending a pressure regulation control signal to the second regulating valve when the current pressure value is not matched with the preset pressure value;
the second regulating valve is used for regulating to a corresponding position according to the pressure regulating control signal when receiving the pressure regulating control signal;
And the controller is further configured to determine a pressure difference value according to the current pressure value and the preset pressure value when the current pressure value is not matched with the preset pressure value, search a corresponding valve position adjustment parameter according to the pressure difference value through a third calibration table, and send a pressure adjustment control signal to the second adjustment valve according to the valve position adjustment parameter.
2. An engine intake control method, characterized in that the engine intake control method is applied to the engine intake control system according to claim 1, the engine intake control system comprising: the device comprises an air inlet pipeline, an air inlet branch, a first regulating valve, a humidity sensor and a controller;
The air inlet pipeline is communicated with an air inlet of the engine, the air inlet branch is communicated with the air inlet pipeline through the first regulating valve, the humidity sensor is arranged at the air inlet of the engine, and the controller is connected with the first regulating valve and the humidity sensor;
The engine air intake control method comprises the following steps:
The humidity sensor acquires the current humidity of an air inlet of the engine and sends the current humidity to the controller;
The controller determines a current working condition according to the running parameters of the vehicle, determines corresponding preset humidity according to the current working condition, and sends a corresponding first valve position control signal to the first regulating valve according to the current humidity and the preset humidity when the current humidity is larger than the preset humidity;
When the first valve position control signal is received by the first regulating valve, the valve position is adjusted to be at a corresponding valve position, so that the gas in the air inlet pipeline and the gas in the air inlet branch are mixed, and the mixed gas is transmitted to an air inlet of the engine, wherein the gas in the air inlet branch is dehumidified gas with target humidity;
The first regulating valve feeds back a current valve position value to the controller;
The controller is further configured to determine a corresponding humidity difference value according to the current humidity and the preset humidity when the current humidity is greater than the preset humidity, search a corresponding target valve position value according to the humidity difference value through a first calibration table, and send a corresponding first valve position control signal to the first regulating valve according to the target valve position value when the sum of the current valve position value and the target valve position value is less than or equal to a maximum valve position value corresponding to the first regulating valve;
The engine air inlet control system further comprises a dehumidifier, wherein the dehumidifier is arranged in the air inlet branch and is connected with the controller;
When the sum of the current valve position value and the target valve position value is larger than the maximum valve position value corresponding to the first regulating valve, the controller sends a corresponding dehumidification control signal to the dehumidifier;
The dehumidifier dehumidifies the gas in the air inlet branch when receiving the dehumidification control signal so as to reduce the target humidity of the gas in the air inlet branch;
wherein the engine air intake control system further comprises a temperature sensor;
The temperature sensor is provided with an air inlet of the engine, and the controller is connected with the temperature sensor;
the temperature sensor obtains the current temperature of an air inlet of the engine and sends the current temperature to the controller;
The controller determines a corresponding preset temperature according to the current working condition, and when the current temperature is greater than the preset temperature, the controller sends a corresponding second valve position control signal to the first regulating valve according to the current temperature and the preset temperature;
When the first regulating valve receives the second valve position control signal, the valve position is adjusted to be at a corresponding valve position, so that the gas in the air inlet pipeline and the gas in the air inlet branch are mixed, and the mixed gas is transmitted to an air inlet of the engine, wherein the gas in the air inlet branch is cooling gas with target temperature;
The first regulating valve feeds back a current valve position value to the controller;
when the current temperature is larger than the preset temperature, the controller determines a corresponding temperature difference value according to the current temperature and the preset temperature, searches a corresponding expected valve position value according to the temperature difference value through a second calibration table, and when the sum of the current valve position value and the expected valve position value is smaller than or equal to a maximum valve position value corresponding to the first regulating valve, sends a corresponding second valve position control signal to the first regulating valve according to the expected valve position value;
The engine air inlet control system further comprises a cooler, wherein the cooler is arranged in the air inlet branch and is connected with the controller;
when the sum of the current valve position value and the expected valve position value is larger than the maximum valve position value corresponding to the first regulating valve, the controller sends a corresponding cooling control signal to the cooler;
When the temperature reduction device receives the temperature reduction control signal, the temperature of the gas in the gas inlet branch is reduced so as to reduce the target temperature of the gas in the gas inlet branch;
The engine air inlet control system further comprises a pressure sensor and a second regulating valve, wherein the pressure sensor is arranged at an air inlet of the engine, and the air inlet pipeline is communicated with the air inlet of the engine through the second regulating valve;
The pressure sensor obtains a current pressure value of an air inlet of the engine and sends the current pressure value to the controller;
The controller determines a corresponding preset pressure value according to the current working condition, and sends a pressure regulation control signal to the second regulating valve when the current pressure value is not matched with the preset pressure value;
The second regulating valve is regulated to a corresponding position according to the pressure regulating control signal when receiving the pressure regulating control signal;
When the current pressure value is not matched with the preset pressure value, the controller determines a pressure difference value according to the current pressure value and the preset pressure value, searches a corresponding valve position adjusting parameter according to the pressure difference value through a third calibration table, and sends a pressure adjusting control signal to the second adjusting valve according to the valve position adjusting parameter;
The first regulating valve feeds back a current valve position value to the controller;
and when the sum of the current valve position value and the target valve position value is smaller than or equal to the maximum valve position value corresponding to the first regulating valve, a corresponding first valve position control signal is sent to the first regulating valve according to the target valve position value.
CN202110605917.4A 2021-05-31 2021-05-31 Engine air inlet control system and method Active CN115126609B (en)

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JP2006046307A (en) * 2004-08-02 2006-02-16 Satoshi Suganuma Intake air humidifying device for internal combustion engine
CN201961310U (en) * 2011-01-31 2011-09-07 佛山市南海码金投资咨询有限公司 Energy-saving efficient automobile engine output power control device
CN106555712A (en) * 2015-09-29 2017-04-05 长城汽车股份有限公司 A kind of engine charge moisture control system and automobile

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Publication number Priority date Publication date Assignee Title
EP2966282A1 (en) * 2014-07-07 2016-01-13 Caterpillar Energy Solutions GmbH System for controlling condensation of water within an intake manifold of an engine
CN105134432A (en) * 2015-09-28 2015-12-09 苏州市海神达机械科技有限公司 Air intake system for engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006046307A (en) * 2004-08-02 2006-02-16 Satoshi Suganuma Intake air humidifying device for internal combustion engine
CN201961310U (en) * 2011-01-31 2011-09-07 佛山市南海码金投资咨询有限公司 Energy-saving efficient automobile engine output power control device
CN106555712A (en) * 2015-09-29 2017-04-05 长城汽车股份有限公司 A kind of engine charge moisture control system and automobile

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