CN108561235B - Engine progress control method and device - Google Patents
Engine progress control method and device Download PDFInfo
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- CN108561235B CN108561235B CN201810300804.1A CN201810300804A CN108561235B CN 108561235 B CN108561235 B CN 108561235B CN 201810300804 A CN201810300804 A CN 201810300804A CN 108561235 B CN108561235 B CN 108561235B
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- crankshaft
- signal
- camshaft
- engine
- phase
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- 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
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/3809—Common rail control systems
-
- 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
- F02D41/22—Safety or indicating devices for abnormal conditions
-
- 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
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
- F02D41/401—Controlling injection timing
-
- 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
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D2041/227—Limping Home, i.e. taking specific engine control measures at abnormal conditions
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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)
- Valve Device For Special Equipments (AREA)
Abstract
本公开涉及一种发动机运行控制方法及装置。所述方法包括：在曲轴检测信号和/或凸轮轴检测信号正常时，确定发动机的运行模式；根据发动机的运行模式，确定与运行模式对应的喷油正时策略；根据喷油正时策略，确定所述发动机的喷油正时，其中，曲轴检测信号是由曲轴传感器对发动机曲轴的信号齿盘进行检测而得到的，凸轮轴检测信号是由凸轮轴传感器对发动机凸轮轴的信号齿盘进行检测而得到的。根据本公开的实施例的发动机运行控制方法，根据曲轴检测信号和凸轮轴检测信号确定发动机的运行模式，并根据运行模式确定喷油正时策略，能够根据发动机的工况来确定喷油正时策略，使发动机稳定运行。
The present disclosure relates to an engine operation control method and device. The method includes: when the crankshaft detection signal and/or the camshaft detection signal is normal, determining the operation mode of the engine; determining the fuel injection timing strategy corresponding to the operation mode according to the engine operation mode; according to the fuel injection timing strategy, Determine the fuel injection timing of the engine, wherein the crankshaft detection signal is obtained by the crankshaft sensor detecting the signal gear plate of the engine crankshaft, and the camshaft detection signal is obtained by the camshaft sensor. obtained by detection. According to the engine operation control method of the embodiment of the present disclosure, the operation mode of the engine is determined according to the crankshaft detection signal and the camshaft detection signal, and the fuel injection timing strategy is determined according to the operation mode, and the fuel injection timing can be determined according to the operating conditions of the engine. strategy to keep the engine running stably.
Description
Technical field
This disclosure relates to technical field of engines more particularly to a kind of engine progress control method and device.
Background technique
In the related art, vehicle motor have various sensors and executing agency, engine limping mode refer to as
Fruit has a sensor degradation, and the judgement of control unit for vehicle will be wrong, for this purpose, when control unit for vehicle finds some biography
When sensor data are abnormal, sensing data can be replaced with a constant, but this method to the accuracy of judgement degree of injection timing compared with
Low, engine performance is poor.
In multiple sensors of vehicle motor and normal executing agency, engine can be operated normally, and can pass through spray
Advance angle oil determines injection timing, and camshaft phase and speed of crankshaft are the bases of determining injection advance angle, in camshaft and song
In the operating of axis, the determination of camshaft phase usually requires camshaft signal fluted disc and rotates biggish angle, to extend starting
The dragging time of machine, cause the dragging sense of engine, while increasing the consumption in ignition process to battery.
Summary of the invention
In view of this, engine stabilizer can be controlled the present disclosure proposes a kind of engine progress control method and device
Operation.
According to the one side of the disclosure, engine progress control method is provided, which comprises
In tractor crankshaft signal and/or normal cam shaft detection signal, the operational mode of engine is determined；
According to the operational mode of the engine, injection timing strategy corresponding with the operational mode is determined.
According to the injection timing strategy, the injection timing of the engine is determined,
Wherein, the tractor crankshaft signal is to be detected by signal fluted disc of the crankshaft sensor to engine crankshaft and obtained
It arrives, the cam shaft detection signal is to be detected to be obtained by signal fluted disc of the camshaft-signal sensor to engine cam
's.
In one possible implementation, in tractor crankshaft signal and/or normal cam shaft detection signal, hair is determined
The operational mode of motivation, comprising:
In the tractor crankshaft signal and the normal cam shaft detection signal, by the operational mode of the engine
It is determined as fast attack mode；
In the tractor crankshaft abnormal signal and the normal cam shaft detection signal, by the operation mould of the engine
Formula is determined as the first limping mode；
In the tractor crankshaft signal when the normal and described cam shaft detection abnormal signal, by the operation mould of the engine
Formula is determined as the second limping mode.
In one possible implementation, according to the injection timing strategy, the injection timing of the engine is determined,
Include:
When the operational mode of the engine is fast attack mode, according to the cam shaft detection signal, the song
Relationship between shaft detection signal and camshaft phase and crank phase, determines crank phase and camshaft phase；
According to the tractor crankshaft signal, speed of crankshaft is determined；
Injection advance angle is determined according to the crank phase, the camshaft phase and the speed of crankshaft；
The injection timing of the engine is determined according to the injection advance angle.
In one possible implementation, when the operational mode of the engine is fast attack mode, according to institute
The relationship between cam shaft detection signal, the tractor crankshaft signal and camshaft phase and crank phase is stated, determines crankshaft
Phase and camshaft phase, comprising:
The cam that camshaft-signal sensor detects is determined at the first moment that the cam shaft detection signal jumps
The cam tooth or cam tooth socket of the signal fluted disc of axis, and the transition times of start recording tractor crankshaft signal, wherein work as camshaft
When sensor detects the boundary between the cam tooth and cam tooth socket of the signal fluted disc of camshaft, the cam shaft detection signal
It jumps, it is described when the boundary between the crank teeth and crankshaft tooth socket that crankshaft sensor detects the signal fluted disc of crankshaft
Tractor crankshaft signal jumps；
The signal fluted disc of the camshaft detected according to the transition times of tractor crankshaft signal and camshaft-signal sensor
Cam tooth or cam tooth socket, determine crank phase；
According to the relationship between the crank phase and camshaft phase and crank phase, camshaft phase is determined.
In one possible implementation, according to the injection timing strategy, the injection timing of the engine is determined,
Include:
When the operational mode of the engine is the first limping mode, records the cam shaft detection signal and occur every time
At the time of jump, wherein when between the cam tooth and cam tooth socket that camshaft-signal sensor detects the signal fluted disc of camshaft
When boundary, the cam shaft detection signal is jumped；
At the time of jump every time according to the cam shaft detection signal, speed of crankshaft is determined；
According to the camshaft phase and the speed of crankshaft determined by cam shaft detection signal, the engine is determined
Injection timing.
In one possible implementation, according to the injection timing strategy, the injection timing of the engine is determined,
Include:
It is the first revolving speed by speed of crankshaft control when the operational mode of the engine is the first limping mode；
According to the camshaft phase and first revolving speed determined by the detection signal of camshaft, the engine is determined
Injection timing.
In one possible implementation, according to the injection timing strategy, the injection timing of the engine is determined,
Include:
When the operational mode of the engine is the second limping mode, according to the tractor crankshaft signal, crankshaft is determined
Circle time in engine operating cycle, wherein the circle time includes the first circle time and the second circle time；
When crankshaft sensor detects the first tooth socket of signal fluted disc of crankshaft, according to the circle time and camshaft phase
Relationship between position and crank phase, determines camshaft phase；
According to the speed of crankshaft and the camshaft phase determined by tractor crankshaft signal, the spray of the engine is determined
Oily timing.
In one possible implementation, multiple cam tooths of the signal fluted disc of the camshaft and multiple cam tooth sockets
Corresponding central angle is different.
In one possible implementation, the signal fluted disc of the crankshaft includes multiple crank teeths and multiple crank teeths
Slot, wherein the multiple crankshaft tooth socket includes the first tooth socket and multiple second tooth sockets,
The corresponding central angle of each crank teeth and the corresponding central angle of the second tooth socket of each crankshaft are equal, and the first tooth socket is corresponding
Central angle be greater than the corresponding central angle of the second tooth socket.
According to another aspect of the present disclosure, engine operating control device is provided, described device includes: crankshaft sensing
Device, camshaft-signal sensor and control assembly；
The crankshaft sensor is used to detect the signal fluted disc of crankshaft, to obtain tractor crankshaft signal；
The camshaft-signal sensor is used to detect the signal fluted disc of camshaft, to obtain cam shaft detection signal；
The control assembly is for executing above-mentioned method.
It, can be according to tractor crankshaft signal and convex according to the engine progress control method and device of all aspects of this disclosure
Wheel shaft detection signal determines the operational mode of engine, and determines injection timing strategy according to operational mode, can be according to starting
The operating condition of machine determines injection timing strategy, runs engine stabilizer.
According to below with reference to the accompanying drawings to detailed description of illustrative embodiments, the other feature and aspect of the disclosure will become
It is clear.
Detailed description of the invention
Comprising in the description and constituting the attached drawing of part of specification and specification together illustrates the disclosure
Exemplary embodiment, feature and aspect, and for explaining the principles of this disclosure.
Fig. 1 is the flow chart of engine progress control method shown according to an exemplary embodiment；
Fig. 2 is the flow chart of engine progress control method shown according to an exemplary embodiment；
Fig. 3 is the flow chart of the step S13 of engine progress control method shown according to an exemplary embodiment；
Fig. 4 is the flow chart of the step S31 of engine progress control method shown according to an exemplary embodiment；
Fig. 5 is the flow chart of the step S13 of engine progress control method shown according to an exemplary embodiment；
Fig. 6 is the flow chart of the step S13 of engine progress control method shown according to an exemplary embodiment；
Fig. 7 is the flow chart of the step S13 of engine progress control method shown according to an exemplary embodiment；
Fig. 8 is the block diagram of engine operating control device shown according to an exemplary embodiment；
Fig. 9 is the schematic diagram of crankshaft sensor and camshaft-signal sensor shown according to an exemplary embodiment；
Figure 10 is the schematic diagram of the signal fluted disc of camshaft shown according to an exemplary embodiment；
Figure 11 is the relational graph of tractor crankshaft signal shown according to an exemplary embodiment Yu cam shaft detection signal.
Specific embodiment
Various exemplary embodiments, feature and the aspect of the disclosure are described in detail below with reference to attached drawing.It is identical in attached drawing
Appended drawing reference indicate element functionally identical or similar.Although the various aspects of embodiment are shown in the attached drawings, remove
It non-specifically points out, it is not necessary to attached drawing drawn to scale.
Dedicated word " exemplary " means " being used as example, embodiment or illustrative " herein.Here as " exemplary "
Illustrated any embodiment should not necessarily be construed as preferred or advantageous over other embodiments.
In addition, giving numerous details in specific embodiment below to better illustrate the disclosure.
It will be appreciated by those skilled in the art that without certain details, the disclosure equally be can be implemented.In some instances, for
Method, means, element and circuit well known to those skilled in the art are not described in detail, in order to highlight the purport of the disclosure.
Fig. 1 is the flow chart of engine progress control method shown according to an exemplary embodiment.As shown in Figure 1, institute
State method can include:
In step s 11, in tractor crankshaft signal and/or normal cam shaft detection signal, the operation of engine is determined
Mode.
In step s 12, according to the operational mode of the engine, injection timing corresponding with the operational mode is determined
Strategy.
In step s 13, according to the injection timing strategy, the injection timing of the engine is determined.
Wherein, the tractor crankshaft signal is to be detected by signal fluted disc of the crankshaft sensor to engine crankshaft and obtained
It arrives, the cam shaft detection signal is to be detected to be obtained by signal fluted disc of the camshaft-signal sensor to engine cam
's.
In accordance with an embodiment of the present disclosure, the fortune of engine can be determined according to tractor crankshaft signal and cam shaft detection signal
Row mode, and injection timing strategy is determined according to operational mode, injection timing strategy can be determined according to the operating condition of engine,
Run engine stabilizer.
In one possible implementation, the crankshaft of engine may include the signal fluted disc of crankshaft, the signal teeth of crankshaft
Disk may include multiple crank teeths and multiple crankshaft tooth sockets, wherein the multiple crankshaft tooth socket includes the first tooth socket and multiple second
Tooth socket, the corresponding central angle of each crank teeth and the corresponding central angle of the second tooth socket of each crankshaft are equal, and the first tooth socket is corresponding
Central angle is greater than the corresponding central angle of the second tooth socket.
Referring to Fig. 9, the signal fluted disc of crankshaft may include 60 crank teeths and 60 crankshaft tooth sockets, wherein crankshaft tooth socket can
Including 59 the second tooth sockets and 1 the first tooth socket.In this example, the signal fluted disc of crankshaft may also comprise 45 crank teeths and 45
Crankshaft tooth socket, wherein crankshaft tooth socket may include 44 the second tooth sockets and 1 the first tooth socket.The corresponding central angle of first tooth socket is big
In the corresponding central angle of the second tooth socket.
Referring to Fig. 9 or Figure 10, the camshaft of engine may include the signal fluted disc of camshaft, and the signal fluted disc of camshaft can
Including multiple cam tooths and multiple cam tooth sockets, multiple cam tooths and the corresponding central angle of multiple cam tooth sockets are different.
In one possible implementation, ferromagnetic material can be used in the signal fluted disc of camshaft and the signal fluted disc of crankshaft
It is made, magnetoelectric sensor or Hall sensor can be used in crankshaft sensor and camshaft-signal sensor.
In one possible implementation, during the signal fluted disc of camshaft is rotated with camshaft, camshaft
Cam tooth and cam tooth socket can be detected in sensor, and generates cam shaft detection signal.In this example, it is examined in camshaft-signal sensor
When measuring cam tooth, high level signal can produce, when camshaft-signal sensor detects cam tooth socket, can produce low level letter
Number.When the boundary between the cam tooth and cam tooth socket that camshaft-signal sensor detects the signal fluted disc of camshaft, camshaft
Detection signal jumps.
In one possible implementation, during the signal fluted disc of crankshaft is rotated with crankshaft, crankshaft sensor
Crank teeth and crankshaft tooth socket can be detected, and generate tractor crankshaft signal.In this example, crank teeth is detected in crankshaft sensor
When, it can produce high level signal, when crankshaft sensor detects crankshaft tooth socket, can produce low level signal.When crankshaft senses
When device detects the boundary between the crank teeth and crankshaft tooth socket of the signal fluted disc of crankshaft, tractor crankshaft signal is jumped.
In one possible implementation, in step s 11, can be according to tractor crankshaft signal and Cam Detection signal
The no normal operational mode to determine engine.In this example, the operational mode of engine may include fast attack mode, first
Limping mode and the second limping mode.
Fig. 2 is the flow chart of engine progress control method shown according to an exemplary embodiment.As shown in Fig. 2, step
Rapid S11 can include:
In the step s 21, in the tractor crankshaft signal and the normal cam shaft detection signal, start described
The operational mode of machine is determined as fast attack mode.
In step S22, in the tractor crankshaft abnormal signal and the normal cam shaft detection signal, by the hair
The operational mode of motivation is determined as the first limping mode.
In step S23, in the tractor crankshaft signal when the normal and described cam shaft detection abnormal signal, by the hair
The operational mode of motivation is determined as the second limping mode.
In one possible implementation, in the step s 21, in the tractor crankshaft signal and the cam shaft detection
When signal is normal, i.e., when camshaft-signal sensor and crankshaft sensor work normally, the operational mode of engine is quickly to open
Dynamic model formula.Injection advance angle can be accurately determined according to parameters such as camshaft phase, crank phase and speeds of crankshaft, and according to spray
Advance angle oil determines injection timing, enables the engine to quick start.
In one possible implementation, in step S22, in the tractor crankshaft abnormal signal and the camshaft
When detection signal is normal, i.e., camshaft-signal sensor works normally, and when crankshaft sensor occurs abnormal, the operational mode of engine is
First limping mode.Speed of crankshaft can be estimated according to cam shaft detection signal, and according to the speed of crankshaft and camshaft of estimation
Phase determines injection timing.
In one possible implementation, in step S23, the normal and described camshaft in the tractor crankshaft signal
When detecting abnormal signal, i.e., crankshaft sensor works normally, and when camshaft-signal sensor occurs abnormal, the operational mode of engine is
Second limping mode.Camshaft phase can be estimated according to tractor crankshaft signal, and according to the camshaft phase and crankshaft of estimation
Revolving speed determines injection timing.
In one possible implementation, above-mentioned Three models can switch mutually.When engine is in shutdown status,
Engine, the crankshaft rotation of the starter dragging engine of vehicle, when speed of crankshaft (that is, engine speed) is greater than spy can be started
When determining revolving speed, such as when speed of crankshaft is greater than 150 revs/min, can determine whether are tractor crankshaft signal and cam shaft detection signal
Normally, that is, judge whether crankshaft sensor and camshaft-signal sensor are normal.If tractor crankshaft signal and cam shaft detection signal
It is all normal, determine the operational mode of engine for fast attack mode.If only cam shaft detection signal is normal, judgement is started
The operational mode of machine is the first limping mode.If only tractor crankshaft signal is normal, judge the operational mode of engine for
Two limping modes.
In one possible implementation, if when the operational mode of engine is the first limping mode, crankshaft inspection
It surveys signal and restores normal, then engine enters fast attack mode.If being the first limping mode in the operational mode of engine
When, there is exception in cam shaft detection signal, then engine enters shutdown status.If being second lame in the operational mode of engine
When row mode, cam shaft detection signal restores normal, then engine enters fast attack mode.If in the operation mould of engine
When formula is the second limping mode, there is exception in tractor crankshaft signal, then engine enters shutdown status.If in engine start
When, tractor crankshaft signal and cam shaft detection signal are abnormal, then engine enters shutdown status.If in the fortune of engine
When row mode is fast attack mode, there is exception simultaneously in camshaft phase signals and speed of crankshaft signal, and engine, which enters, to stop
Machine state.If there is exception in cam shaft detection signal, then engine when the operational mode of engine is fast attack mode
Into the second limping mode.If there is exception in tractor crankshaft signal when the operational mode of engine is fast attack mode,
Then engine enters the first limping mode.
In one possible implementation, in step s 12, above-mentioned every kind of operational mode, can correspond to a kind of oil spout
Timing strategy can be used for determining injection timing, to enable the engine to stable operation.
In one possible implementation, in step s 13, after determining the operational mode of engine, it is available with
The corresponding injection timing strategy of operational mode, determines the injection timing of engine.
In accordance with an embodiment of the present disclosure, fast attack mode, the first limping mode and the second limping mode be can be realized
Automatically switch, in cam shaft detection signal or tractor crankshaft abnormal signal, the first limping mode or second can be automatically switched to
Limping mode enables the engine to the stable operation under the first limping mode or the second limping mode, so that vehicle can
Continue to travel in the case where cam shaft detection signal or tractor crankshaft abnormal signal, realization limp-home (such as near going to
Maintenance website).
Fig. 3 is the flow chart of the step S13 of engine progress control method shown according to an exemplary embodiment.Such as figure
Shown in 3, step S13 can include:
In step S31, when the operational mode of the engine is fast attack mode, according to the cam shaft detection
Relationship between signal, the tractor crankshaft signal and camshaft phase and crank phase, determines crank phase and camshaft
Phase.
In step s 32, according to the tractor crankshaft signal, speed of crankshaft is determined.
In step S33, determine that oil spout mentions according to the crank phase, the camshaft phase and the speed of crankshaft
Anterior angle.
In step S34, the injection timing of the engine is determined according to the injection advance angle.
It in one possible implementation, can be according to cam shaft detection signal, the tractor crankshaft in step S31
Relationship between signal and camshaft phase and crank phase, determines crank phase and camshaft phase.
Fig. 4 is the flow chart of the step S31 of engine progress control method shown according to an exemplary embodiment.Such as figure
Shown in 4, step S31 specifically includes the following steps:
In step S311, camshaft-signal sensor is determined at the first moment that the cam shaft detection signal jumps
The cam tooth or cam tooth socket of the signal fluted disc of the camshaft detected, and the transition times of start recording tractor crankshaft signal,
Wherein, described when the boundary between the cam tooth and cam tooth socket that camshaft-signal sensor detects the signal fluted disc of camshaft
Cam shaft detection signal jumps, when between the crank teeth and crankshaft tooth socket that crankshaft sensor detects the signal fluted disc of crankshaft
Boundary when, the tractor crankshaft signal jumps.
In step S312, detected according to the transition times of tractor crankshaft signal and the camshaft-signal sensor convex
The cam tooth or cam tooth socket of the signal fluted disc of wheel shaft, determine crank phase.
In step S313, according to the relationship between the crank phase and camshaft phase and crank phase, determine
Camshaft phase.
In one possible implementation, in step S311, recordable cam shaft detection signal jump the
When one moment, the currently detected cam tooth of camshaft-signal sensor or cam tooth socket.The camshaft that camshaft-signal sensor detects
The position of signal fluted disc and the phase of camshaft between relationship be determining.Due to each cam tooth and cam of camshaft
The angle of the corresponding central angle of tooth socket is different, when determining the currently detected cam tooth of camshaft-signal sensor or cam tooth socket,
It can determine the cam tooth or the corresponding central angle of cam tooth socket, may further determine that the range of camshaft phase is the convex of current detection
Phase range corresponding to the gear teeth or the corresponding central angle of cam tooth socket.
In this example, between the cam tooth of camshaft signal fluted disc and the corresponding central angle of cam tooth socket and camshaft phase
Corresponding relationship be known.The duration of each cam tooth and cam tooth socket that detect can be counted when camshaft rotates
When, and cam tooth and cam tooth socket are numbered according to timing result.For example, carrying out timing using counter, work as detection
When to boundary between a cam tooth socket and a cam tooth, cam shaft detection signal is jumped, and recording counter
Data, when signal jumps again, that is, when detecting the cam tooth and boundary between next cam tooth socket, again
The data of recording counter, according to the data of above-mentioned two counter, it may be determined that under current rotating speed, camshaft-signal sensor detection
The cam tooth is compiled to the duration of the cam tooth, and using the duration and cam tooth or cam tooth socket corresponding central angle
Number.After camshaft rotates a circle, all cam tooths and cam tooth socket complete number process.Continue the mistake of rotation in camshaft
Cheng Zhong can determine that currently detected cam or cam tooth socket are corresponding according to the number of currently detected cam or cam tooth socket
Central angle, can be between the position according to the signal fluted disc for the camshaft that the phase and camshaft-signal sensor of camshaft detect
Relationship, obtain the range of the corresponding camshaft phase of the central angle.
In one possible implementation, in step S312, the signal fluted disc for the crankshaft that crankshaft sensor detects
Position and crank phase between relationship be known.Meanwhile referring to Fig.1 1, the pass between crank phase and camshaft phase
System is also known.At the first moment, it can record the transition times of tractor crankshaft signal, to determine the phase of crankshaft.
In this example, the first moment jumped in cam shaft detection signal, the jump of start recording tractor crankshaft signal
Become number.Tractor crankshaft signal jumps every time, can correspond to crank phase and change certain angle.According to the signal of camshaft
The cam tooth of fluted disc and the number of cam tooth socket, it may be determined that the phase of camshaft at the first moment, and pass through crank phase
Relationship between angle changing and crank phase and camshaft phase, it may be determined that the phase of crankshaft at the first moment.It can root
It, can according to the phase of crankshaft at the first moment and the angle of the corresponding crank phase variation of the transition times of tractor crankshaft signal
Determine the phase of current crankshaft.
In step S313, it can be determined convex according to the relationship between crank phase and camshaft phase and crank phase
Wheel shaft phase.
In this example, referring to Fig.1 1, it can also be according to the angle changing and camshaft phase of crank phase after the first moment
Relationship between position and crank phase determines the angle changing of camshaft phase, and according to the phase of camshaft when the first moment with
And determine the angle changing of camshaft phase, determine the current phase of camshaft, and according between camshaft phase and crank phase
Relationship determine the phase of crankshaft.
In one possible implementation, in step s 32, speed of crankshaft can be determined according to tractor crankshaft signal.?
It is recordable at the time of detect the first tooth socket twice in example, and determine between at the time of detect the first tooth socket twice when
Between section, pass through the period, it may be determined that the revolving speed of crankshaft.
It in one possible implementation, can be according to crank phase, camshaft phase and crankshaft in step S33
Revolving speed determines injection advance angle, when injection advance angle is fuel injector commencement of fuel injection, the crank angle of plunger distance top dead centre.It can
Injection advance angle is determined by crank phase, camshaft phase and speed of crankshaft according to this field the relevant technologies.
In one possible implementation, in step S34, injection advance can be passed through according to this field the relevant technologies
Angle determines the injection timing of engine.
In accordance with an embodiment of the present disclosure, the error of the camshaft phase determined by crank phase is smaller, also, in cam
Shaft detection signal can determine camshaft phase when jumping, and at most wait one cam tooth of signal teeth disc spins of camshaft
Or the corresponding central angle the time it takes of cam tooth socket can determine camshaft phase, can shorten the starter dragging time, subtract
The dragging sense of light engine, realizes the quick start of engine.
Fig. 5 is the flow chart of the step S13 of engine progress control method shown according to an exemplary embodiment.Such as figure
Shown in 5, step S13 can include:
In step s 51, when the operational mode of the engine is the first limping mode, the cam shaft detection is recorded
At the time of signal jumps every time, wherein when camshaft-signal sensor detects the cam tooth of the signal fluted disc of camshaft and convex
When taking turns the boundary between tooth socket, the cam shaft detection signal is jumped.
In step S52, at the time of jump every time according to the cam shaft detection signal, speed of crankshaft is determined.
In step S53, according to the camshaft phase and the speed of crankshaft determined by cam shaft detection signal, determine
The injection timing of the engine.
In one possible implementation, in step s 51, tractor crankshaft abnormal signal and cam shaft detection signal is just
Often, i.e., there is abnormality in crankshaft sensor, can not obtain tractor crankshaft signal or tractor crankshaft distorted signals, can not directly lead to
Tractor crankshaft signal is crossed to determine speed of crankshaft, then speed of crankshaft is estimated by cam shaft detection signal.
In one possible implementation, it can record cam shaft detection signal at the time of jump every time, i.e. cam
At the time of axle sensor detects the boundary between the cam tooth and cam tooth socket of the signal fluted disc of camshaft.In this example, exist
During engine rotates first lap into camshaft after the first limping mode, using counter records cam shaft detection signal
At the time of jump every time, and it is numbered using cam tooth and cam tooth socket of the moment to the signal fluted disc of camshaft,
Each cam tooth or cam tooth socket can correspond to a central angle.During camshaft continues rotation, when detection signal hair
When raw jump, the position of the signal fluted disc for the camshaft that camshaft-signal sensor detects, and root can be determined according to the number
Camshaft phase is determined according to the relationship between the signal fluted disc position of camshaft and camshaft phase.
In one possible implementation, in step S52, at the time of being jumped twice according to cam shaft detection signal
Between the cam tooth that detects of period and the period and the corresponding central angle of cam tooth socket determine turning for camshaft
Speed.The revolving speed of crankshaft is 2 times of camshaft speed.Therefore, the revolving speed of crankshaft can be determined according to the revolving speed of camshaft.
It in one possible implementation,, can at the time of cam shaft detection signal jumps in step S53
According to the number, the phase of the moment camshaft is determined, and the injection timing of engine is determined according to the revolving speed of crankshaft.
In this example, it in tractor crankshaft abnormal signal, due to that can not determine speed of crankshaft, can not determine accurately
Injection timing, engine act in the first lap of camshaft rotation without oil spout after entering the first limping mode.Convex
During wheel shaft rotates, when camshaft-signal sensor detects the boundary between cam tooth and cam tooth socket, cam shaft detection
Side jump occurs for signal, and triggerable counter starts counting.Can appropriate gated counter clock cycle.Whenever cam shaft detection
Signal occur jump just the numerical value of counter is stored, can tracer signal jump at the time of.Due to the signal of camshaft
The each cam tooth and the corresponding central angle of cam tooth socket of fluted disc are different, engine cam signal fluted disc turn around with
Afterwards, it can determine that camshaft-signal sensor detects the sequence of each cam tooth and cam tooth socket according to the data of counter records,
And the cam tooth and cam tooth socket of the signal fluted disc of camshaft are numbered.
After the number for completing cam tooth and cam tooth socket, can be detected by camshaft-signal sensor jump twice when
The cam tooth or the corresponding central angle of cam tooth socket detected in period and the period between quarter, determines to start
The revolving speed of machine cam, and determine the revolving speed of engine crankshaft.When camshaft signal jumps, the camshaft that may further determine that is believed
The number of number fluted disc determines the position of the signal fluted disc of camshaft, and can determine camshaft according to the position of camshaft signal fluted disc
Phase.According to the phase of camshaft and calculated speed of crankshaft, the oil spout of relative good accuracy can be being provided for engine just
When.
In accordance with an embodiment of the present disclosure, camshaft speed is determined according to cam tooth and the corresponding central angle of cam tooth socket,
To calculate speed of crankshaft, abnormal crankshaft can be replaced using the speed of crankshaft of calculating in tractor crankshaft abnormal signal
Signal is detected, injection timing can be relatively accurately determined in tractor crankshaft abnormal signal.
Fig. 6 is the flow chart of the step S13 of engine progress control method shown according to an exemplary embodiment.Such as figure
Shown in 6, step S13 can include:
It is the by speed of crankshaft control when the operational mode of the engine is the first limping mode in step S61
One revolving speed；
In step S62, according to the camshaft phase and first revolving speed determined by the detection signal of camshaft, really
The injection timing of the fixed engine.
In one possible implementation, in step S61, if abnormality occurs in crankshaft sensor, can pass through
Electronic speed limiter of engine etc. by speed of crankshaft control be the first revolving speed, in this example, the first revolving speed can be 1200 turns/
Minute or the known speeds such as 1500 revs/min.
It in one possible implementation,, can at the time of cam shaft detection signal jumps in step S62
According to the number, the phase of the moment camshaft is determined, and engine is determined according to the phase and first revolving speed
Injection timing.
In this example, it if the operational mode of engine is the first limping mode, can be filled by the electronic speed limit of engine
Setting makes work under the first revolving speed, such as 1200 revs/min or 1500 revs/min.It can be jumped in cam shaft detection signal
When change, the position of the signal fluted disc of camshaft is determined by cam tooth or the number of cam tooth socket, and pass through camshaft signal
Relationship between the position and camshaft phase of fluted disc, determines the phase of camshaft.It, can when engine speed is the first revolving speed
Injection advance angle is determined according to camshaft phase and first revolving speed, and the injection timing of relative good accuracy is provided.
In accordance with an embodiment of the present disclosure, it can be replaced in tractor crankshaft abnormal signal using specific speed of crankshaft
Abnormal tractor crankshaft signal can relatively accurately determine injection timing in tractor crankshaft abnormal signal.
Fig. 7 is the flow chart of the step S13 of engine progress control method shown according to an exemplary embodiment.Such as figure
Shown in 7, step S13 can include:
In step S71, when the operational mode of the engine is the second limping mode, believed according to the tractor crankshaft
Number, determine circle time of the crankshaft in engine operating cycle, wherein the circle time includes the first circle time and the second circle time.
In step S72, when crankshaft sensor detects the first tooth socket of signal fluted disc of crankshaft, according to the circle time
And the relationship between camshaft phase and crank phase, determine camshaft phase.
In step S73, according to the speed of crankshaft and the camshaft phase determined by tractor crankshaft signal, institute is determined
State the injection timing of engine.
In one possible implementation, in step S71, cam shaft detection abnormal signal and tractor crankshaft signal is just
Often, i.e., there is abnormality in camshaft-signal sensor, can not obtain cam shaft detection signal or cam shaft detection distorted signals, can not
Camshaft phase is directly determined by cam shaft detection signal, then camshaft phase is estimated by tractor crankshaft signal.
In one possible implementation, recordable crankshaft sensor detects the crankshaft signal jump after the first tooth socket
Number, and determine according to the phase of the number and crankshaft corresponding with the first tooth socket the current phase of crankshaft.But every
In the duty cycle of a engine, crankshaft rotation takes two turns, and therefore, the phase of crankshaft repeats in two circle times, and two
The same crank phase in circle time can correspond to different camshaft phases.Therefore, serviceable condition register determines crankshaft
Circle time in engine operating cycle.
In this example, the signal fluted disc of crankshaft includes first tooth socket, and the corresponding central angle of the first tooth socket is greater than other
The corresponding central angle of tooth socket.Crankshaft sensor can be detected to the level signal occurred when the first tooth socket as foundation, to deposit
Device carries out set or resets operation.For example, detecting the first tooth for the first time in crankshaft sensor in the duty cycle of engine
When slot, set operation is carried out to register, for example, 1 can be set the data in register, that is, when the data in register are 1,
The circle time for indicating crankshaft is the first lap in engine operating cycle.When crankshaft sensor detects the first tooth socket for the second time,
Reset operation is carried out to register, for example, 0 can be set the data in register, that is, when the data in register are 0, indicate bent
The circle time of axis is the second circle in engine operating cycle.
In one possible implementation, in step S72, crankshaft sensor detects the of the signal fluted disc of crankshaft
When one tooth socket, it may be determined that the phase of crankshaft.According to the phase of crankshaft, the circle time of crankshaft and camshaft phase and crank phase it
Between relationship, it may be determined that camshaft phase.For example, when the circle time of crankshaft is the 1st circle, when the phase of crankshaft is 30 °, corresponding cam
Axis phase is 15 °.When the circle time of crankshaft is the 2nd circle, when the phase of crankshaft is 30 °, corresponding camshaft phase is 195 °.
It in one possible implementation, can be according to the speed of crankshaft determined by tractor crankshaft signal in step S73
And the phase of the camshaft of above method determination, to determine the injection timing of engine.
In this example, when cam shaft detection abnormal signal, can be determined by tractor crankshaft signal crankshaft revolving speed and
The phase of camshaft.Under the conditions of engine normally starts synchronous regime, it is recorded in and is started by the reset and set of register
The circle time of crankshaft in one duty cycle of machine, the i.e. current circle time of crankshaft are first lap or in engine operating cycle
Two circles.Tractor crankshaft signal when detecting the first tooth socket using crankshaft sensor is as foundation, to judge the circle time of crankshaft.In song
When axle sensor detects the first tooth socket for the first time, set operation is carried out to register, for example, the data in register can be set
1, when crankshaft sensor detects the first tooth socket for the second time, reset operation is carried out to register, for example, can will be in register
Data set 0.
In this example, the data in register can be read directly, to determine the circle time of crankshaft.And it is examined in crankshaft sensor
When measuring the first tooth socket of signal fluted disc of crankshaft, the phase of crankshaft is determined.By the phase of crankshaft and the circle time of crankshaft come
It determines the phase of camshaft, and determines the injection timing of engine according to the revolving speed of the phase of camshaft and crankshaft.Showing
In example, if detecting that the revolving speed of engine is greater than 400 revs/min, engine enters the second limping mode, and according to above-mentioned
Method determines the circle time of crankshaft.If engine speed is less than or equal to 400 revs/min, determined by the method for examination spray
The crankshaft circle time of engine.For example, it may be assumed that the circle time of crankshaft is first lap, the phase of camshaft is determined according to the phase of crankshaft
Position, and determine according to the revolving speed of the phase of camshaft and crankshaft the injection timing of engine, it is carried out using the injection timing
Operated fuel injection judges that examination is sprayed into function if cylinder normal operation, otherwise judgement examination spray failure, and can determine the circle time of crankshaft
For the second circle.
In this example, when cam shaft detection abnormal signal, user can be prompted to check the related components of camshaft, or mention
Show that user repairs vehicle.For example, user can be prompted to go to neighbouring maintenance station when engine is in the second limping mode
It repairs, and determines the injection timing of engine using the above method, travel vehicle stabilization to maintenance station.
In accordance with an embodiment of the present disclosure, it can be determined in cam shaft detection abnormal signal using tractor crankshaft signal
The phase of camshaft can relatively accurately determine injection timing in cam shaft detection abnormal signal.
Engine progress control method according to an embodiment of the present disclosure is believed according to tractor crankshaft signal and cam shaft detection
The operational mode for number determining engine, and determines injection timing strategy according to operational mode, can according to the operating condition of engine come
It determines injection timing strategy, runs engine stabilizer.The crankshaft rotation waited in engine starting process can be reduced simultaneously
Angle reduces the dragging time of starter, reduces consumption of the starter to accumulator electric-quantity in start-up course.
Fig. 8 is the block diagram of engine operating control device shown according to an exemplary embodiment.As shown in figure 8, described
Device includes:
Crankshaft sensor 81, for detecting the signal fluted disc of crankshaft, to obtain tractor crankshaft signal.
Camshaft-signal sensor 82, for detecting the signal fluted disc of camshaft, to obtain cam shaft detection signal.
Control assembly 83, for executing the above method.
In one possible implementation, engine operating control device may also include power supply, for transporting for engine
Row control device provides electric power.Control assembly 83 may include signal processing module, for tractor crankshaft signal and cam repacking
Signal is surveyed to be filtered, amplify and the processing such as analog-to-digital conversion.
In one possible implementation, control assembly 83 may include control unit, and described control unit can be micro-
The device of any energy processing routine instruction such as control unit (MCU), CPU, MPU, FPGA, control unit can pass through specialized hardware electricity
Road is realized, executable logical order can also be combined to realize by general procedure component, to execute above-mentioned control method.In example
In, described control unit can be 32 with eTPU (high-performance processor) module as embeded processor.
In one possible implementation, control assembly 83 may include communication unit, the communication unit can be used for by
Determining injection timing is transmitted to Vehicle Electronic Control Unit (ECU), makes ECU according to the injection timing to control fuel injector
And/or the components such as spark plug, oil spout and ignition operation are carried out to engine.In this example, if engine is petrol engine,
Then ECU can control fuel injector and spark plug according to the injection timing.If engine is diesel engine, since diesel oil is sent out
Motivation is lighted a fire without spark plug, then ECU can control fuel injector according to the injection timing.
Fig. 9 is the schematic diagram of crankshaft sensor and camshaft-signal sensor shown according to an exemplary embodiment.Such as Fig. 9 institute
Show, camshaft-signal sensor 82 is used to detect the signal fluted disc of camshaft, to obtain cam shaft detection signal.In this example, it is examining
When measuring cam tooth, high level signal can get, when detecting cam tooth socket, can get low level signal.Crankshaft sensor
81 for detecting the signal fluted disc of crankshaft, to obtain tractor crankshaft signal.In this example, it when detecting crank teeth, can get
High level signal can get low level signal when detecting crankshaft tooth socket.
In one possible implementation, the signal fluted disc of crankshaft may include 60 crank teeths and 60 crankshaft tooth sockets,
Wherein, crankshaft tooth socket may include 59 the second tooth sockets and 1 the first tooth socket.The corresponding central angle of first tooth socket is greater than the second tooth socket
Corresponding central angle.In this example, the second tooth socket and the corresponding central angle of crank teeth are 3 °, and the corresponding central angle of the first tooth socket is
15°。
In one possible implementation, the signal fluted disc of camshaft may include multiple cam tooths and multiple cam tooths
Slot, multiple cam tooths and the corresponding central angle of multiple cam tooth sockets are different.
Figure 10 is the schematic diagram of the signal fluted disc of camshaft shown according to an exemplary embodiment.As shown in Figure 10, convex
The camshaft phase signals that wheel shaft signal fluted disc generates can meet the requirement that injection timing is determined in the first limping mode, camshaft
The cam tooth of signal fluted disc and the number of cylinders and cylinder of the corresponding central angle of cam tooth socket and engine pass is distributed with.Due to more
A cam tooth and the corresponding central angle of multiple cam tooth sockets are different, can detect that signal is jumped by camshaft-signal sensor 82
And the number of camshaft or cam tooth socket determines the position of signal fluted disc that camshaft-signal sensor 82 detects, so that it is determined that
The phase of camshaft.
In one possible implementation, the cam tooth of the signal fluted disc of camshaft and the angle of cam tooth socket are not bent
The signal teeth disk crank teeth of axis or the integral multiple of crankshaft tooth socket, therefore, the jump of cam shaft detection signal and tractor crankshaft signal
Jump will not occur simultaneously.If the cam tooth of the signal fluted disc of camshaft and the angle of cam tooth socket are the signal teeths of crankshaft
The integral multiple of disk crank teeth or crankshaft tooth socket, can be by adjusting the opposite peace of the signal fluted disc of the signal fluted disc and camshaft of crankshaft
Holding position changes the corresponding relationship between camshaft phase and crank phase, jump and song to avoid cam shaft detection signal
The jump of shaft detection signal occurs simultaneously.
In one possible implementation, the signal fluted disc cam tooth of camshaft and the angle of cam tooth socket difference compared with
It is small, can be when camshaft-signal sensor detect any camshaft location, distance detects the waiting time of signal jump next time
It is shorter.Each cam tooth of the signal fluted disc of camshaft and the differential seat angle of the corresponding central angle of cam tooth socket can be crankshaft signal
The integral multiple of the sum of the central angle of the crank teeth of fluted disc and crankshaft tooth socket.
In one possible implementation, in this example, the corresponding central angle of cam tooth of the signal fluted disc of camshaft
Respectively 25 °, 55.5 °, 50 ° and 33 degree, the corresponding central angle of cam tooth socket are respectively 29.5 °, 65.5 °, 59 ° and 42.5 degree.
The radius of the part of the cam tooth of the signal fluted disc of camshaft is 36mm, and the radius of cam tooth slot part is 30mm, cam tooth and
The radius of cam tooth socket differs 6mm, and camshaft-signal sensor 82 is enabled to generate sound when detecting cam tooth or cam tooth socket
The high level signal or low level signal answered.According to above-mentioned angle, camshaft, which at most rotates 65.5 °, can judge camshaft phase
Position.
In this example, engine can be the in-line four cylinder diesel engine with high pressure common rail fuel injection system.It is bent
Every 180 ° of the rotation of axis, engine does a function.It is the first cylinder, third cylinder, the 4th cylinder and the in the ignition order of cylinder
In the four cylinder engine of two cylinders, the first cylinder is to do work between 0 ° -180 ° in crank phase, and the second cylinder is in crank phase
To do work between 540 ° -720 °, third cylinder is to do work between 180 ° -360 ° in crank phase, and the 4th cylinder is in crankshaft phase
Position is to do work between 360 ° -540 °.It is the first cylinder, the second cylinder, the 4th cylinder and third cylinder in the ignition order of cylinder
Four cylinder engine in, the first cylinder crank phase be 0 ° -180 ° between do work, the second cylinder is being in crank phase
It does work between 180 ° -360 °, third cylinder is to do work between 540 ° -720 ° in crank phase, and the 4th cylinder is in crank phase
To do work between 360 ° -540 °.It, can by the signal fluted disc of camshaft to determine camshaft phase in the first limping mode
Phase near 0 ° or 720 °, 180 °, 360 ° and 540 ° of identification etc., such as the boundary of cam tooth and cam tooth socket is arranged upper
It states near phase, the cylinder of acting can be determined when judging camshaft phase, to determine the injection timing of the cylinder.
In this example, the cam tooth that central angle is 59 ° is arranged in the phase of camshaft when the first cylinder can be started to acting
The near border for the cam tooth that slot and central angle are 55.5 °, the phase setting that the second cylinder can be started to camshaft when acting exist
The near border for the cam tooth that the cam tooth socket and central angle that central angle is 42.5 ° are 50 °, when third cylinder can be started to acting
The near border for the cam tooth that the cam tooth socket that central angle is 65.5 ° and central angle are 55.5 ° is arranged in the phase of camshaft, can
It is 25 ° that cam tooth socket that central angle is 29.5 ° and central angle, which is arranged in, in the phase of camshaft when 4th cylinder is started acting
The near border of cam tooth.Injection advance angle can be quickly determined after determining the phase of camshaft, be ready to carry out oil spout movement.
In one possible implementation, when the operational mode of engine is fast attack mode, crankshaft can be passed through
Level and the signal jump etc. for detecting signal and cam shaft detection signal, identifies in the smallest crankshaft rotating range and sets out
The phase of motivation crankshaft, to determine injection timing.In this example, fixed phase can be set to crank phase, to determine camshaft
Current phase and crankshaft phase.
Figure 11 is the relational graph of tractor crankshaft signal shown according to an exemplary embodiment Yu cam shaft detection signal.Such as
Shown in Figure 11, the feature of cam shaft detection signal and tractor crankshaft signal includes high level, low level, rising edge and decline
Edge.As shown in figure 9, angle X is 116 °, angle Y is 150 °, and angle U is 32 °, and angle V is 75 °, by aforementioned four angle,
It can determine the relationship between the signal fluted disc of camshaft and the setting angle of the signal fluted disc of crankshaft.
According to the setting angle of the signal fluted disc of the signal fluted disc and crankshaft of the combination of above-mentioned signal characteristic and camshaft
Between relationship, it may be determined that the fixed phase of 8 crank phases.Respectively A:365 ° of fixed phase, B:671 ° of fixed phase, ginseng
Examine C:62 ° of phase, D:431 ° of fixed phase, E:280 ° of fixed phase, G:180 ° of F:490 ° of fixed phase and fixed phase and
H:540 ° of fixed phase.Wherein, fixed phase A is the rising by the rising edge and tractor crankshaft signal of cam shaft detection signal
Along what is determined.Fixed phase B is determined by the rising edge of cam shaft detection signal and the failing edge of tractor crankshaft signal.Ginseng
Examining phase C is determined by the failing edge of cam shaft detection signal and the rising edge of tractor crankshaft signal.Fixed phase D is logical
What the failing edge of the failing edge and tractor crankshaft signal of crossing camshaft detection signal determined.Fixed phase E is by cam repacking
What the high level of the failing edge and tractor crankshaft signal of surveying signal determined.Fixed phase F is by the upper of cam shaft detection signal
What the high level of liter edge and tractor crankshaft signal determined.Fixed phase G is the rising edge and crankshaft by cam shaft detection signal
What the low level of detection signal determined.Fixed phase H is the failing edge and tractor crankshaft signal by cam shaft detection signal
What low level determined.In addition, the phase of crankshaft is 0 ° or 360 °, 0 ° or 360 ° when crankshaft sensor detects the first tooth socket
It is used as fixed phase.When detecting above-mentioned fixed phase, crank phase and camshaft phase can be quickly determined, and quickly
It determines injection advance angle, is ready to carry out oil spout movement.
The presently disclosed embodiments is described above, above description is exemplary, and non-exclusive, and
It is not limited to disclosed each embodiment.Without departing from the scope and spirit of illustrated each embodiment, for this skill
Many modifications and changes are obvious for the those of ordinary skill in art field.The selection of term used herein, purport
In the principle, practical application or improvement to the technology in market for best explaining each embodiment, or make the art
Other those of ordinary skill can understand each embodiment disclosed herein.
Claims (8)
1. a kind of engine progress control method, which is characterized in that the described method includes:
In tractor crankshaft signal and/or normal cam shaft detection signal, the operational mode of engine is determined；
According to the operational mode of the engine, injection timing strategy corresponding with the operational mode is determined；
According to the injection timing strategy, the injection timing of the engine is determined,
Wherein, the tractor crankshaft signal is to be detected to be obtained by signal fluted disc of the crankshaft sensor to engine crankshaft
, the cam shaft detection signal is to be detected to be obtained by signal fluted disc of the camshaft-signal sensor to engine cam
's；
Wherein, in tractor crankshaft signal and/or normal cam shaft detection signal, the operational mode of engine is determined, comprising:
When the tractor crankshaft signal and the normal cam shaft detection signal, the operational mode of the engine is determined as quickly
Start-up mode；
It is in the tractor crankshaft abnormal signal and the normal cam shaft detection signal, the operational mode of the engine is true
It is set to the first limping mode；
It is in the tractor crankshaft signal when the normal and described cam shaft detection abnormal signal, the operational mode of the engine is true
It is set to the second limping mode；
According to the injection timing strategy, the injection timing of the engine is determined, comprising: when the operational mode of the engine
When for the second limping mode, according to the tractor crankshaft signal, circle time of the crankshaft in engine operating cycle is determined, wherein
The circle time includes the first circle time and the second circle time；
When crankshaft sensor detects the first tooth socket of signal fluted disc of crankshaft, according to the circle time, crank phase and convex
Relationship between wheel shaft phase and crank phase, determines camshaft phase；
According to the speed of crankshaft and the camshaft phase determined by tractor crankshaft signal, the oil spout of the engine is being determined just
When.
2. the method according to claim 1, wherein determining the engine according to the injection timing strategy
Injection timing, comprising:
When the operational mode of the engine is fast attack mode, examined according to the cam shaft detection signal, the crankshaft
The relationship between signal and camshaft phase and crank phase is surveyed, determines crank phase and camshaft phase；
According to the tractor crankshaft signal, speed of crankshaft is determined；
Injection advance angle is determined according to the crank phase, the camshaft phase and the speed of crankshaft；
The injection timing of the engine is determined according to the injection advance angle.
3. according to the method described in claim 2, it is characterized in that, when the operational mode of the engine is fast attack mode
When, according to the relationship between the cam shaft detection signal, the tractor crankshaft signal and camshaft phase and crank phase,
Determine crank phase and camshaft phase, comprising:
At the first moment that the cam shaft detection signal jumps, the camshaft that camshaft-signal sensor detects is determined
The cam tooth or cam tooth socket of signal fluted disc, and the transition times of start recording tractor crankshaft signal, wherein when camshaft senses
When device detects the boundary between the cam tooth and cam tooth socket of the signal fluted disc of camshaft, the cam shaft detection signal occurs
Jump, when the boundary between the crank teeth and crankshaft tooth socket that crankshaft sensor detects the signal fluted disc of crankshaft, the crankshaft
Detection signal jumps；
The signal fluted disc of the camshaft detected according to the transition times of tractor crankshaft signal and the camshaft-signal sensor
Cam tooth or cam tooth socket, determine crank phase；
According to the relationship between the crank phase and camshaft phase and crank phase, camshaft phase is determined.
4. according to the method described in claim 3, it is characterized in that, determining the engine according to the injection timing strategy
Injection timing, comprising:
When the operational mode of the engine is the first limping mode, records the cam shaft detection signal and jump every time
At the time of, wherein the boundary between the cam tooth and cam tooth socket that camshaft-signal sensor detects the signal fluted disc of camshaft
When, the cam shaft detection signal jumps；
At the time of jump every time according to the cam shaft detection signal, speed of crankshaft is determined；
According to the camshaft phase and the speed of crankshaft determined by cam shaft detection signal, the oil spout of the engine is determined
Timing.
5. the method according to claim 1, wherein determining the engine according to the injection timing strategy
Injection timing, comprising:
It is the first revolving speed by speed of crankshaft control when the operational mode of the engine is the first limping mode；
According to the camshaft phase and first revolving speed determined by the detection signal of camshaft, the spray of the engine is determined
Oily timing.
6. according to the method described in claim 3, it is characterized in that, multiple cam tooths of the signal fluted disc of the camshaft and more
The corresponding central angle of a cam tooth socket is different.
7. according to the method described in claim 3, it is characterized in that, the signal fluted disc of the crankshaft includes multiple crank teeths and more
A crankshaft tooth socket, wherein the multiple crankshaft tooth socket includes the first tooth socket and multiple second tooth sockets,
The corresponding central angle of each crank teeth and the corresponding central angle of the second tooth socket of each crankshaft are equal, the corresponding circle of the first tooth socket
Heart angle is greater than the corresponding central angle of the second tooth socket.
8. a kind of engine operating control device, which is characterized in that described device includes: crankshaft sensor, camshaft-signal sensor
And control assembly；
The crankshaft sensor is used to detect the signal fluted disc of crankshaft, to obtain tractor crankshaft signal；
The camshaft-signal sensor is used to detect the signal fluted disc of camshaft, to obtain cam shaft detection signal；
The control assembly requires method described in 1-7 any one for perform claim.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109238731B (en) * | 2018-11-07 | 2023-12-01 | 河南柴油机重工有限责任公司 | An online timing detection device for internal combustion engine gas distribution and fuel injection |
| CN112703410B (en) * | 2018-11-15 | 2023-03-21 | 潍柴动力股份有限公司 | Phase diagnosis method and device |
| CN110455541B (en) * | 2019-08-08 | 2020-07-21 | 北京理工大学 | Common signal simulation device and method for engine |
| CN110778434B (en) * | 2019-09-25 | 2020-09-29 | 潍柴动力股份有限公司 | Method and device for determining fuel injection angle in single camshaft mode of diesel engine |
| CN110966109A (en) * | 2019-11-04 | 2020-04-07 | 东风柳州汽车有限公司 | Control method for preventing vehicle flameout caused by signal loss of crankshaft position sensor |
| CN113050408A (en) * | 2021-03-09 | 2021-06-29 | 广西玉柴机器股份有限公司 | Marine diesel engine redundancy control system |
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