CN119145961B - Driving protection method and related device for air inlet hydraulic cylinder - Google Patents
Driving protection method and related device for air inlet hydraulic cylinder Download PDFInfo
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- CN119145961B CN119145961B CN202411596071.2A CN202411596071A CN119145961B CN 119145961 B CN119145961 B CN 119145961B CN 202411596071 A CN202411596071 A CN 202411596071A CN 119145961 B CN119145961 B CN 119145961B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/02—Servomotor systems with programme control derived from a store or timing device; Control devices therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/16—Other safety measures for, or other control of, pumps
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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
- F02D23/00—Controlling engines characterised by their being supercharged
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6306—Electronic controllers using input signals representing a pressure
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- 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
- Y02T10/12—Improving ICE efficiencies
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- General Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The application discloses a driving protection method and a related device of an air inlet hydraulic cylinder, which relate to the field of engine control, and adjusting the diameter of the air inlet hydraulic cylinder push rod according to the air inlet negative pressure limit value of the air inlet connecting pipe so as to meet the material bending strength limit value of the air inlet hydraulic cylinder push rod, and arranging a negative pressure sensor in the air inlet connecting pipe. When the engine supercharger is started, controlling the exhaust hydraulic cylinder to be opened, acquiring a calibration interval time length of the intake hydraulic cylinder after the exhaust hydraulic cylinder is opened, wherein the calibration interval time length is calibrated by an intake negative pressure limit value before the diameter of an air intake hydraulic cylinder push rod is adjusted, continuously acquiring intake negative pressure values of an intake connecting pipe under different interval time lengths by taking the calibration interval time length as a maximum value through a negative pressure sensor, comparing the intake negative pressure values with the intake negative pressure limit value to determine an optimal interval time length, wherein the intake negative pressure value under the optimal interval time length is smaller than the intake negative pressure limit value, and the engine performance of the intake hydraulic cylinder is optimal when the intake hydraulic cylinder is opened according to the optimal interval time length. So as to avoid bending deformation of the push rod of the air inlet hydraulic cylinder.
Description
Technical Field
The application relates to the technical field of engine control, in particular to a driving protection method and a related device for an air inlet hydraulic cylinder.
Background
Currently, sequential supercharging technology is often applied to large marine engines, and some models utilize hydraulic systems to control normal switching of an exhaust hydraulic cylinder and an intake hydraulic cylinder.
However, when the engine supercharger is used for three-in-four operation (namely, the first three superchargers are normally operated, and the fourth supercharger is cut in operation), as the control is poor, the air inlet hydraulic cylinder is later than the opening interval period of the air outlet hydraulic cylinder, the negative pressure of the air inlet connecting pipe is gradually increased along with the increase of the time period, the acting force generated by the negative pressure can transmit the force generated by the negative pressure to the air inlet hydraulic cylinder push rod through the structures such as the air inlet butterfly valve, the driving shaft and the like, so that the air inlet hydraulic cylinder push rod bears the lateral force, the bending deformation occurs, the fourth supercharger cannot cut in, and the reliability problem of the engine is further affected.
Disclosure of Invention
In view of the above problems, the present application provides a driving protection method for an intake hydraulic cylinder and a related device, so as to achieve the purpose of avoiding bending deformation of a push rod of the intake hydraulic cylinder and successful cutting-in of a fourth supercharger. The specific scheme is as follows:
The first aspect of the application provides a driving protection method of an air inlet hydraulic cylinder, wherein the driving structure of the air inlet hydraulic cylinder comprises an air inlet hydraulic cylinder push rod and an air inlet connecting pipe, the diameter of the air inlet hydraulic cylinder push rod is adjusted according to an air inlet negative pressure limit value of the air inlet connecting pipe so as to meet the material bending strength limit value of the air inlet hydraulic cylinder push rod, and a negative pressure sensor is arranged in the air inlet connecting pipe, and the driving protection method of the air inlet hydraulic cylinder comprises the following steps:
under the condition that the engine supercharger is determined to start three to four, controlling an exhaust hydraulic cylinder to be opened;
Acquiring a calibration interval time length of the air inlet hydraulic cylinder after the exhaust hydraulic cylinder is opened, wherein the calibration interval time length is calibrated by the air inlet negative pressure limit value before the diameter of the air inlet hydraulic cylinder push rod is adjusted;
And continuously collecting air inlet negative pressure values of the air inlet connecting pipe under different interval durations by using the negative pressure sensor with the calibration interval duration as a maximum value, comparing the air inlet negative pressure values with the air inlet negative pressure limit value to determine an optimal interval duration, wherein the air inlet negative pressure value under the optimal interval duration is smaller than the air inlet negative pressure limit value, and the engine performance of the air inlet hydraulic cylinder is optimal when the air inlet hydraulic cylinder is opened according to the optimal interval duration.
In one possible implementation, the continuously collecting, by the negative pressure sensor, the intake negative pressure value of the intake adapter under different interval durations with the calibration interval duration as a maximum value, and determining the optimal interval duration by comparing the intake negative pressure value with the intake negative pressure limit value includes:
Acquiring a unit time interval;
determining the interval duration of the current acquisition according to the unit time interval, wherein the interval duration of the current acquisition is smaller than the calibration interval duration;
When the interval duration of the current acquisition is reached, acquiring an intake negative pressure value of the current acquisition through the negative pressure sensor, and comparing the intake negative pressure value of the current acquisition with the intake negative pressure limit value;
If the air intake negative pressure value acquired at the time is smaller than the air intake negative pressure limit value, recording the current oil consumption value, and returning to execute the step of determining the interval duration acquired at the time according to the unit time interval;
and if the acquired air intake negative pressure value is greater than or equal to the air intake negative pressure limit value, ending the acquisition, comparing the recorded oil consumption values, and taking the interval duration corresponding to the minimum oil consumption value as the optimal interval duration.
In one possible implementation, the continuously collecting, by the negative pressure sensor, the intake negative pressure value of the intake adapter under different interval durations with the calibration interval duration as a maximum value, and comparing the intake negative pressure value with the intake negative pressure limit value to determine an optimal interval duration, and further includes:
outputting first alarm information and controlling the opening of the air inlet hydraulic cylinder;
And executing the step of comparing the recorded oil consumption values under the condition that the engine increaser is determined to finish three-four cutting.
In one possible implementation, the continuously collecting, by the negative pressure sensor, the intake negative pressure value of the intake adapter under different interval durations with the calibration interval duration as a maximum value, and comparing the intake negative pressure value with the intake negative pressure limit value to determine an optimal interval duration, and further includes:
And outputting second alarm information and executing parking protection operation under the condition that the engine adder is not completed by three-four.
In one possible implementation, the intake cylinder rod has a diameter of 16mm.
The second aspect of the application provides a driving protection device of an air inlet hydraulic cylinder, the driving structure of the air inlet hydraulic cylinder comprises an air inlet hydraulic cylinder push rod and an air inlet connecting pipe, the diameter of the air inlet hydraulic cylinder push rod is adjusted according to an air inlet negative pressure limit value of the air inlet connecting pipe so as to meet the material bending strength limit value of the air inlet hydraulic cylinder push rod, and a negative pressure sensor is arranged in the air inlet connecting pipe, the driving protection device of the air inlet hydraulic cylinder comprises:
The exhaust hydraulic cylinder opening module is used for controlling the exhaust hydraulic cylinder to be opened under the condition that the engine supercharger is determined to start three-four;
The calibration interval acquisition module is used for acquiring the calibration interval duration of the air inlet hydraulic cylinder which is later than the opening of the exhaust hydraulic cylinder, wherein the calibration interval duration is calibrated by the air inlet negative pressure limit value before the diameter of the air inlet hydraulic cylinder push rod is adjusted;
The optimal interval determining module is used for continuously collecting the air inlet negative pressure values of the air inlet connecting pipe under different interval durations by using the negative pressure sensor with the calibrated interval duration as the maximum value, comparing the air inlet negative pressure values with the air inlet negative pressure limit value to determine the optimal interval duration, wherein the air inlet negative pressure value under the optimal interval duration is smaller than the air inlet negative pressure limit value, and the engine performance of the air inlet hydraulic cylinder is optimal when the air inlet hydraulic cylinder is opened according to the optimal interval duration.
In one possible implementation, the optimal interval determining module is specifically configured to:
The method comprises the steps of obtaining a unit time interval, determining the interval duration of the current acquisition according to the unit time interval, obtaining an air intake negative pressure value of the current acquisition through the negative pressure sensor when the interval duration of the current acquisition is reached, comparing the air intake negative pressure value of the current acquisition with the air intake negative pressure limit value, recording the current oil consumption value if the air intake negative pressure value of the current acquisition is smaller than the air intake negative pressure limit value, and returning to execute the step of determining the interval duration of the current acquisition according to the unit time interval, ending the acquisition if the air intake negative pressure value of the current acquisition is larger than or equal to the air intake negative pressure limit value, and comparing the recorded oil consumption value, wherein the interval duration corresponding to the minimum oil consumption value is used as the optimal interval duration.
A third aspect of the application provides a computer program product comprising computer readable instructions which, when run on an electronic device, cause the electronic device to implement the method of protecting actuation of an intake hydraulic cylinder of the first aspect or any implementation of the first aspect.
A fourth aspect of the application provides an electronic device comprising at least one processor and a memory coupled to the processor, wherein:
The memory is used for storing a computer program;
The processor is configured to execute the computer program to enable the electronic device to implement the method for protecting driving of an intake hydraulic cylinder according to the first aspect or any implementation manner of the first aspect.
A fifth aspect of the present application provides a computer storage medium carrying one or more computer programs which, when executed by an electronic device, enable the electronic device to implement the method of protecting actuation of an intake hydraulic cylinder of the first aspect or any implementation manner of the first aspect.
By means of the technical scheme, the driving protection method and the related device for the air inlet hydraulic cylinder are provided, the diameter of the push rod of the air inlet hydraulic cylinder is adjusted according to the air inlet negative pressure limit value of the air inlet connecting pipe so as to meet the material bending strength limit value of the push rod, and a negative pressure sensor is arranged in the air inlet connecting pipe. Under the condition that the engine supercharger is started up three to four, controlling the exhaust hydraulic cylinder to be opened, obtaining the calibration interval time length of the intake hydraulic cylinder after the exhaust hydraulic cylinder is opened, wherein the calibration interval time length is calibrated by an intake negative pressure limit value before the diameter of an intake hydraulic cylinder push rod is adjusted, continuously collecting the intake negative pressure values of the intake connecting pipe under different interval time lengths by using the negative pressure sensor with the calibration interval time length as a maximum value, comparing the intake negative pressure values with the intake negative pressure limit value to determine the optimal interval time length, wherein the intake negative pressure value under the optimal interval time length is smaller than the intake negative pressure limit value, and the engine performance of the intake hydraulic cylinder is optimal when the intake hydraulic cylinder is opened according to the optimal interval time length. According to the application, on one hand, the diameter of the air inlet hydraulic cylinder push rod is adjusted to ensure that the air inlet hydraulic cylinder push rod meets the bending strength of materials, and on the other hand, the opening interval time of the air inlet hydraulic cylinder is optimized to ensure that the air inlet negative pressure is not overrun and the engine performance is optimal, so that the possibility of bending deformation of the hydraulic cylinder push rod is avoided. The application can effectively solve the problem that the push rod of the air inlet hydraulic cylinder is bent and deformed, and ensure that the fourth supercharger is successfully cut in, thereby improving the reliability of the engine and ensuring the normal and stable operation of the engine.
Drawings
The above and other features, advantages, and aspects of embodiments of the present disclosure will become more apparent by reference to the following detailed description when taken in conjunction with the accompanying drawings. The same or similar reference numbers will be used throughout the drawings to refer to the same or like elements. It should be understood that the figures are schematic and that elements and components are not necessarily drawn to scale.
FIG. 1 is a schematic diagram of a driving configuration of an intake cylinder;
FIG. 2 is a schematic partial cross-sectional view of the drive structure of the intake cylinder shown in FIG. 1;
Fig. 3 is a schematic flow chart of a driving protection method for an intake hydraulic cylinder according to an embodiment of the present application;
Fig. 4 is a schematic partial flow chart of a driving protection method for an intake hydraulic cylinder according to an embodiment of the present application;
Fig. 5 is a schematic structural diagram of a driving protection device for an intake hydraulic cylinder according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
Embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. The terminology used in the description of the embodiments of the application herein is for the purpose of describing particular embodiments of the application only and is not intended to be limiting of the application.
Embodiments of the present application are described below with reference to the accompanying drawings. As one of ordinary skill in the art can know, with the development of technology and the appearance of new scenes, the technical scheme provided by the embodiment of the application is also applicable to similar technical problems.
The terms "first," "second," and the like in the description of the application and in the above-described figures, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances and are merely illustrative of the manner in which embodiments of the application have been described in connection with the description of the objects having the same attributes. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of elements is not necessarily limited to those elements, but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
For ease of understanding, the following related concepts related to the present application are described:
The hydraulic cylinder driving refers to a driving mode that hydraulic energy is utilized to convert the pressure energy of liquid into mechanical energy so as to drive a piston or a plunger of the hydraulic cylinder to perform linear reciprocating motion.
Referring to fig. 1, fig. 1 is a schematic structural view of a driving structure of an intake hydraulic cylinder. Referring to fig. 2, fig. 2 is a schematic partial cross-sectional view of a driving structure of the intake cylinder shown in fig. 1. As shown in fig. 1, the driving structure of the air intake hydraulic cylinder comprises a driving shaft 1, a swing rod 2, a connecting rod 3, an adjusting joint 4, an air intake hydraulic cylinder push rod 5 and an air intake hydraulic cylinder 6, and as shown in fig. 2, the driving structure of the air intake hydraulic cylinder further comprises an air intake butterfly valve 7 and an air intake connecting pipe 8.
When the engine supercharger is used for three-four times, the calibration data show that the opening interval time of the air inlet hydraulic cylinder is 3.5s later than that of the air outlet hydraulic cylinder, the air inlet negative pressure is-6 Kpa, and the push rod 5 of the air inlet hydraulic cylinder is bent and deformed. Analysis of the above problems shows that the reason why the air intake cylinder push rod 5 is bent is that the air intake connecting pipe 8 is internally provided with a large negative pressure due to the overlong opening interval time of the air intake cylinder and the air exhaust cylinder, the negative pressure generates a large reverse driving force for the air intake butterfly valve 7, and the engine oil in the air intake cylinder is not released in the moment of generating the driving force, so that the air intake cylinder push rod 5 bears an excessive bending moment, and the air intake cylinder push rod 5 is bent and deformed under the action of lateral force. The following theoretical derivation is made on the cause of bending deformation of the intake cylinder push rod 5:
When the negative pressure of the intake air is-6 KPa, it can be obtained by data calculation that the lateral force of the negative pressure moment to the intake air cylinder push rod 5 at this time is 200.7N, generally, the extension length of the intake air cylinder push rod 5 is 0.15M, and the bending moment applied to the intake air cylinder push rod 5 by the negative pressure moment is m=200.7×0.15=30.1 Nm. Assuming that the diameter of the section of the intake cylinder rod 5 is d, the circular bending resistance section coefficient of the intake cylinder rod 5 is w=pi×d 3/32. At present, when the diameter of the intake cylinder push rod 5 is 12mm and d=12 mm, the bending strength σmax=m/w=30.1/(pi×d 3/32) =177.5 MPa, the material used for the intake cylinder push rod 5 is 45 steel, and the corresponding material bending strength limit value is 100MPa. Obviously, under the condition of the intake negative pressure of-6 Kpa, the bending strength generated by the intake negative pressure is enough to cause the intake hydraulic cylinder push rod 5 with the diameter of 12mm to bend and deform.
The problem that the push rod of the air inlet hydraulic cylinder is bent and deformed when the engine supercharger performs three-cutting-four-time operation is solved. In the embodiment of the application, the diameter of the air inlet hydraulic cylinder push rod 5 is adjusted according to the air inlet negative pressure limit value of the air inlet connecting pipe 8 so as to meet the material bending strength limit value of the air inlet hydraulic cylinder push rod 5. Continuing with the description of the calibration data, the negative pressure limit value of the air inlet connecting pipe 8 is-6 Kpa, the bending strength limit value of the material of the air inlet hydraulic cylinder push rod 5 is 100MPa, and if the diameter of the air inlet hydraulic cylinder push rod 5 after adjustment is X, the requirement that sigma max is less than or equal to 100MPa, namely 30.1/(pi multiplied by d 3/32) is less than or equal to 100MPa is met, so that the value range of the diameter meeting the bending strength limit value of the material can be solved.
In practical application, considering the influence of the excessive diameter of the air intake hydraulic cylinder push rod 5 on the whole driving structure, in order to ensure that the air intake hydraulic cylinder push rod 5 does not bend and deform under the condition of air intake negative pressure-6 Kpa, according to the design principle and stress analysis of the driving structure of the air intake hydraulic cylinder, the diameter of the air intake hydraulic cylinder push rod 5 is preferably changed from phi 12mm to phi 16mm, so when d=16 mm, the bending strength sigma max=m/w=30.1/(pi×d 3/32) =74.9 mpa <100mpa, that is, the bending strength generated by the air intake negative pressure cannot bend and deform the air intake hydraulic cylinder push rod 5 with the diameter of 16mm under the condition of air intake negative pressure-6 Kpa.
On the basis, in order to further ensure the reliability of the push rod 5 of the air inlet hydraulic cylinder, a negative pressure sensor is arranged in the air inlet connecting pipe 8 in the embodiment of the application so as to realize the driving protection of the air inlet hydraulic cylinder. Referring to fig. 3, fig. 3 is a schematic flow chart of a driving protection method for an intake hydraulic cylinder according to an embodiment of the present application. As shown in fig. 3, the driving protection method for an intake hydraulic cylinder according to the embodiment of the present application may include steps S10 to S30, and the steps are described in detail below.
And S10, controlling the exhaust hydraulic cylinder to be opened under the condition that the engine supercharger is determined to start three to four.
Specifically, the engine supercharger is subjected to three-four switching only when the engine load is increased, so in the embodiment of the application, the process of the engine supercharger in three-four switching can be monitored through the engine speed or the engine power, the monitoring of the engine speed is taken as an example for illustration, and when the engine speed is greater than the corresponding speed threshold, the engine supercharger can be determined to be started in three-four switching. On the premise, the exhaust hydraulic cylinder is further controlled to be opened, and the exhaust butterfly valve is specifically controlled to be opened.
S20, acquiring a calibration interval time length of the air inlet hydraulic cylinder after the air outlet hydraulic cylinder is opened, wherein the calibration interval time length is calibrated by an air inlet negative pressure limit value before the diameter of the air inlet hydraulic cylinder push rod is adjusted.
Specifically, in the embodiment of the application, the length of the calibration interval when the air inlet hydraulic cylinder is opened is longer than that when the air outlet hydraulic cylinder is opened, and the air inlet hydraulic cylinder is calibrated by an air inlet negative pressure limit value before the diameter of the air inlet hydraulic cylinder push rod is adjusted. Continuing to explain with the above calibration data, the interval duration of the display of the calibration data may be 3.5s as the calibration interval duration, and the intake negative pressure is-6 Kpa as the intake negative pressure limit value.
S30, continuously collecting air inlet negative pressure values of the air inlet connecting pipes under different interval durations by using the negative pressure sensor with the calibrated interval duration as the maximum value, comparing the air inlet negative pressure values with the air inlet negative pressure limit value to determine the optimal interval duration, wherein the air inlet negative pressure value under the optimal interval duration is smaller than the air inlet negative pressure limit value, and the engine performance of the air inlet hydraulic cylinder is optimal when the air inlet hydraulic cylinder is opened according to the optimal interval duration.
Specifically, in the embodiment of the present application, for convenience of understanding, the interval duration of the current moment from the opening moment of the exhaust hydraulic cylinder is counted by starting the timer after the opening of the exhaust hydraulic cylinder is controlled by using the calibration interval duration of 3.5S, and before reaching 3.5S, the intake negative pressure value of the intake adapter tube 8 under a plurality of different interval durations can be continuously collected by the negative pressure sensor.
It is assumed that, as time increases, before the interval duration reaches the calibration interval duration 3.5S, an intake negative pressure value (Ti < 3.5S) under the interval duration Ti is acquired by the negative pressure sensor, after the intake negative pressure value of the negative pressure sensor under the interval duration Ti is acquired, the intake negative pressure value can be compared with an intake negative pressure limit value-6 Kpa, if the intake negative pressure value is greater than or equal to the intake negative pressure limit value-6 Kpa, the acquisition of the intake negative pressure value is ended, otherwise, if the intake negative pressure value is less than the intake negative pressure limit value-6 Kpa, the intake negative pressure value and an engine performance parameter are recorded, and the next interval duration is continued.
For a plurality of interval durations in which intake negative pressure values are recorded, by comparing respective engine performance parameters, an interval duration in which engine performance is optimal may be selected as an optimal interval duration. At this optimum interval period, the intake negative pressure value of the intake nipple 8 is smaller than the intake negative pressure limit value-6 Kpa, and the engine performance is optimum.
In one possible implementation, the intake negative pressure values of different interval durations may be acquired by setting a unit time interval, and the optimal interval duration may be determined accordingly. Referring to fig. 4, fig. 4 is a schematic partial flow chart of a driving protection method for an intake hydraulic cylinder according to an embodiment of the present application. As shown in fig. 4, in the driving protection method for an intake hydraulic cylinder provided in the embodiment of the present application, in step S30, "taking the calibrated interval duration as the maximum value, continuously collecting the intake negative pressure values of the intake adapter under different interval durations by the negative pressure sensor, and determining the optimal interval duration by comparing with the intake negative pressure limit value", steps S301 to S305 may be included, and detailed descriptions of these steps are respectively described below.
S301, acquiring a unit time interval.
Specifically, in the embodiment of the present application, the unit time interval, that is, the time interval between two consecutive collection intake negative pressure values (that is, the time interval between two consecutive interval durations) may be a fixed value, or may be gradually reduced according to the time, so as to implement fine-grained driving protection.
S302, determining the interval duration of the current acquisition according to the unit time interval, wherein the interval duration of the current acquisition is smaller than the calibration interval duration.
Specifically, in the embodiment of the application, the interval duration of the current acquisition is determined according to the interval duration of the last acquisition and the unit time interval, that is, the interval duration of the current acquisition is equal to the sum of the interval duration of the last acquisition and the unit time interval. The interval duration of the current acquisition is required to be smaller than the calibration interval duration, and if the interval duration of the current acquisition is longer than or equal to the calibration interval duration, the acquisition is ended.
S303, when the interval duration of the current collection is reached, acquiring an intake negative pressure value of the current collection through a negative pressure sensor, and comparing the intake negative pressure value of the current collection with an intake negative pressure limit value.
Specifically, in the embodiment of the application, when the current time reaches the interval duration of the current acquisition, the intake negative pressure value of the current acquisition is acquired through the negative pressure sensor and is compared with the intake negative pressure limit value.
S304, if the acquired negative pressure value of the air intake is smaller than the negative pressure limit value of the air intake, recording the current oil consumption value, and returning to the step S302.
Specifically, in the embodiment of the present application, the fuel consumption parameter of the vehicle is used as the embodiment of the engine performance parameter, if the intake negative pressure value acquired at this time is smaller than the intake negative pressure limit value, the current fuel consumption value is recorded, and the step S302 is executed in a return manner, so as to enter the next acquisition.
S305, if the intake negative pressure value acquired at this time is greater than or equal to the intake negative pressure limit value, ending the acquisition, comparing the recorded oil consumption values, and taking the interval duration corresponding to the minimum oil consumption value as the optimal interval duration.
Specifically, in the embodiment of the application, if the intake negative pressure value acquired at this time is greater than or equal to the intake negative pressure limit value, the acquisition is ended, the recorded multiple oil consumption values are compared, and the interval duration corresponding to the minimum oil consumption value is taken as the optimal interval duration.
On the basis, in order to verify that the theoretical calculated value of the stress analysis of the driving structure is consistent with the air inlet negative pressure limit value calibrated by an actual test, the driving protection method for the air inlet hydraulic cylinder provided by the embodiment of the application, wherein in the step S30, the air inlet negative pressure value of the air inlet connecting pipe under different interval durations is continuously collected by a negative pressure sensor by taking the calibrated interval duration as the maximum value, and the optimal interval duration is determined by comparing the air inlet negative pressure value with the air inlet negative pressure limit value, can comprise the following steps:
and under the condition that the engine increaser is determined to finish three-four cutting, executing the step S305 of comparing the recorded oil consumption values.
In the embodiment of the application, after the acquisition is finished, the first alarm information can be output to the engine controller so as to enable the engine controller to alarm and control the opening of the air inlet hydraulic cylinder, and particularly control the opening of the air inlet butterfly valve 7.
Further, it is determined whether the engine controller completes three-four. Specifically, whether the engine supercharger completes three-four cutting can be judged through the engine speed or the engine power, the engine speed is continuously monitored for illustration, if the engine speed reaches the rated speed, the engine controller can be determined to complete three-four cutting, otherwise, the engine controller is determined to complete three-four cutting.
After the engine controller is determined to finish three-four, comparing the recorded oil consumption values, and taking the interval duration corresponding to the minimum oil consumption value as the optimal interval duration.
Further, in the case where it is determined that the engine controller does not complete three-four, the second warning information is output, and the parking protection operation is performed. Specifically, the second warning information is output to the engine controller to alert the engine controller and perform the parking protection operation.
Through the description, the driving protection method for the air inlet hydraulic cylinder can effectively solve the problem that the push rod of the air inlet hydraulic cylinder is bent and deformed, so that the push rod of the air inlet hydraulic cylinder cannot be bent when the engine supercharger performs three-cutting-four operation, the normal cut-in operation of the fourth supercharger is ensured, the reliability of an engine is improved, and the normal and stable operation of the engine is ensured.
The driving protection method of the air inlet hydraulic cylinder provided by the embodiment of the application is described above, and a device for executing the driving protection method of the air inlet hydraulic cylinder is described below.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a driving protection device for an intake hydraulic cylinder according to an embodiment of the present application. As shown in fig. 5, the driving protection device for an air intake hydraulic cylinder provided by the embodiment of the application, the driving structure for an air intake hydraulic cylinder comprises an air intake hydraulic cylinder push rod and an air intake connecting pipe, the diameter of the air intake hydraulic cylinder push rod is adjusted according to the air intake negative pressure limit value of the air intake connecting pipe so as to meet the material bending strength limit value of the air intake hydraulic cylinder push rod, and a negative pressure sensor is arranged in the air intake connecting pipe, wherein the driving protection device for the air intake hydraulic cylinder comprises:
An exhaust hydraulic cylinder opening module 10 for controlling the exhaust hydraulic cylinder to be opened in the case that it is determined that the engine supercharger starts three-four;
The calibration interval acquisition module 20 is used for acquiring the calibration interval duration of the intake hydraulic cylinder after the exhaust hydraulic cylinder is opened, wherein the calibration interval duration is calibrated by an intake negative pressure limit value before the diameter of the push rod of the intake hydraulic cylinder is adjusted;
The optimal interval determining module 30 is configured to continuously collect, by using the negative pressure sensor, intake negative pressure values of the intake adapter under different interval durations with the calibrated interval duration as a maximum value, determine an optimal interval duration by comparing the intake negative pressure values with the intake negative pressure limit value, where the intake negative pressure values under the optimal interval duration are smaller than the intake negative pressure limit value, and the engine performance of the intake hydraulic cylinder is optimal when the intake hydraulic cylinder is opened according to the optimal interval duration.
In one possible implementation, the optimal interval determination module 30 is specifically configured to:
The method comprises the steps of obtaining a unit time interval, determining the interval duration of the current acquisition according to the unit time interval, wherein the interval duration of the current acquisition is smaller than a calibration interval duration, obtaining an air intake negative pressure value of the current acquisition through a negative pressure sensor when the interval duration of the current acquisition is reached, comparing the air intake negative pressure value of the current acquisition with an air intake negative pressure limit value, recording the current oil consumption value if the air intake negative pressure value of the current acquisition is smaller than the air intake negative pressure limit value, returning to execute the step of determining the interval duration of the current acquisition according to the unit time interval, ending the acquisition if the air intake negative pressure value of the current acquisition is larger than or equal to the air intake negative pressure limit value, comparing the recorded oil consumption value, and taking the interval duration corresponding to the minimum oil consumption value as the optimal interval duration.
In one possible implementation, the optimal interval determination module 30 is further configured to:
And under the condition that the engine increaser is determined to finish three-four cutting, comparing the recorded oil consumption values.
In one possible implementation, the optimal interval determination module 30 is further configured to:
in the case where it is determined that the engine adder does not complete three-four, the second warning information is output, and the parking protection operation is performed.
In one possible implementation, the diameter of the intake cylinder rod is 16mm.
It should be noted that, the refinement function of each module in the embodiment of the present application may refer to the corresponding disclosure portion of the driving protection method embodiment of the intake hydraulic cylinder, and will not be described herein.
The embodiment of the application also provides electronic equipment. Referring to fig. 6, fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application. The electronic device in the embodiment of the present application may include, but is not limited to, a fixed terminal such as a mobile phone, a notebook computer, a PDA (personal digital assistant), a PAD (tablet computer), a desktop computer, and the like. The electronic device shown in fig. 6 is only an example and should not be construed as limiting the functionality and scope of use of the embodiments of the application.
As shown in fig. 6, the electronic device may include a processing means (e.g., a central processing unit, a graphics processor, etc.) 601, which may perform various appropriate actions and processes according to a program stored in a Read Only Memory (ROM) 602 or a program loaded from a storage means 608 into a Random Access Memory (RAM) 603. In the state where the electronic device is powered on, various programs and data necessary for the operation of the electronic device are also stored in the RAM 603. The processing device 601, the ROM 602, and the RAM 603 are connected to each other through a bus 604. An input/output (I/O) interface 605 is also connected to bus 604.
In general, devices may be connected to I/O interface 605 including input devices 606, including for example, touch screens, touch pads, keyboards, mice, cameras, microphones, accelerometers, gyroscopes, etc., output devices 607, including for example, liquid Crystal Displays (LCDs), speakers, vibrators, etc., storage devices 608, including for example, memory cards, hard disks, etc., and communication devices 609. The communication means 609 may allow the electronic device to communicate with other devices wirelessly or by wire to exchange data. While fig. 6 shows an electronic device having various means, it is to be understood that not all of the illustrated means are required to be implemented or provided. More or fewer devices may be implemented or provided instead.
The embodiment of the application also provides a computer program product, which comprises computer readable instructions, and when the computer readable instructions run on the electronic equipment, the electronic equipment is enabled to realize any driving protection method of the air inlet hydraulic cylinder.
The embodiment of the application also provides a computer readable storage medium, which carries one or more computer programs, and when the one or more computer programs are executed by the electronic equipment, the electronic equipment can realize the driving protection method of any air inlet hydraulic cylinder provided by the embodiment of the application.
It should be further noted that the above-described apparatus embodiments are merely illustrative, and that the units described as separate units may or may not be physically separate, and that units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, in the drawings of the embodiment of the device provided by the application, the connection relation between the modules represents that the modules have communication connection, and can be specifically implemented as one or more communication buses or signal lines.
From the above description of the embodiments, it will be apparent to those skilled in the art that the present application may be implemented by means of software plus necessary general purpose hardware, or of course by means of special purpose hardware including application specific integrated circuits, special purpose CPUs, special purpose memories, special purpose components, etc. Generally, functions performed by computer programs can be easily implemented by corresponding hardware, and specific hardware structures for implementing the same functions can be varied, such as analog circuits, digital circuits, or dedicated circuits. But a software program implementation is a preferred embodiment for many more of the cases of the present application. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a readable storage medium, such as a floppy disk, a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk or an optical disk of a computer, etc., comprising several instructions for causing a computer device (which may be a personal computer, a training device, a network device, etc.) to perform the method according to the embodiments of the present application.
In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product.
The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, training device, or data center to another website, computer, training device, or data center via a wired (e.g., coaxial cable, optical fiber, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be stored by a computer or a data storage device such as a training device, a data center, or the like that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid state disk (Solid STATE DISK, SSD)), etc.
Claims (8)
1. The driving protection method for the air inlet hydraulic cylinder is characterized in that the driving structure of the air inlet hydraulic cylinder comprises an air inlet hydraulic cylinder push rod and an air inlet connecting pipe, the diameter of the air inlet hydraulic cylinder push rod is adjusted according to an air inlet negative pressure limit value of the air inlet connecting pipe so as to meet the material bending strength limit value of the air inlet hydraulic cylinder push rod, and a negative pressure sensor is arranged in the air inlet connecting pipe, and the driving protection method for the air inlet hydraulic cylinder comprises the following steps:
under the condition that the engine supercharger is determined to start three to four, controlling an exhaust hydraulic cylinder to be opened;
Acquiring a calibration interval time length of the air inlet hydraulic cylinder after the exhaust hydraulic cylinder is opened, wherein the calibration interval time length is calibrated by the air inlet negative pressure limit value before the diameter of the air inlet hydraulic cylinder push rod is adjusted;
Continuously collecting air inlet negative pressure values of the air inlet connecting pipe under different interval durations by using the negative pressure sensor with the calibration interval duration as a maximum value, comparing the air inlet negative pressure values with the air inlet negative pressure limit value to determine an optimal interval duration, wherein the air inlet negative pressure value under the optimal interval duration is smaller than the air inlet negative pressure limit value, and the engine performance of the air inlet hydraulic cylinder is optimal when the air inlet hydraulic cylinder is opened according to the optimal interval duration;
The step of continuously collecting the intake negative pressure values of the intake connecting pipe under different interval durations by using the negative pressure sensor with the calibrated interval duration as the maximum value, and comparing the intake negative pressure values with the intake negative pressure limit value to determine the optimal interval duration comprises the following steps:
Acquiring a unit time interval;
determining the interval duration of the current acquisition according to the unit time interval, wherein the interval duration of the current acquisition is smaller than the calibration interval duration;
When the interval duration of the current acquisition is reached, acquiring an intake negative pressure value of the current acquisition through the negative pressure sensor, and comparing the intake negative pressure value of the current acquisition with the intake negative pressure limit value;
If the air intake negative pressure value acquired at the time is smaller than the air intake negative pressure limit value, recording the current oil consumption value, and returning to execute the step of determining the interval duration acquired at the time according to the unit time interval;
and if the acquired air intake negative pressure value is greater than or equal to the air intake negative pressure limit value, ending the acquisition, comparing the recorded oil consumption values, and taking the interval duration corresponding to the minimum oil consumption value as the optimal interval duration.
2. The method according to claim 1, wherein the continuously collecting, by the negative pressure sensor, intake negative pressure values of the intake nipple at different interval durations with the calibration interval duration as a maximum value, and determining an optimal interval duration by comparing the intake negative pressure values with the intake negative pressure limit value, further comprises:
after the acquisition is finished, outputting first alarm information and controlling the opening of the air inlet hydraulic cylinder;
And executing the step of comparing the recorded oil consumption values under the condition that the engine increaser is determined to finish three-four cutting.
3. The method according to claim 2, wherein the continuously collecting, by the negative pressure sensor, intake negative pressure values of the intake nipple at different interval durations with the calibration interval duration as a maximum value, and determining an optimal interval duration by comparing the intake negative pressure values with the intake negative pressure limit value, further comprises:
And outputting second alarm information and executing parking protection operation under the condition that the engine adder is not completed by three-four.
4. The drive protection method of an intake cylinder according to claim 1, wherein the diameter of the intake cylinder rod is 16mm.
5. The driving protection device for the air inlet hydraulic cylinder is characterized in that the driving structure of the air inlet hydraulic cylinder comprises an air inlet hydraulic cylinder push rod and an air inlet connecting pipe, the diameter of the air inlet hydraulic cylinder push rod is adjusted according to an air inlet negative pressure limit value of the air inlet connecting pipe so as to meet the material bending strength limit value of the air inlet hydraulic cylinder push rod, and a negative pressure sensor is arranged in the air inlet connecting pipe, and the driving protection device for the air inlet hydraulic cylinder comprises:
The exhaust hydraulic cylinder opening module is used for controlling the exhaust hydraulic cylinder to be opened under the condition that the engine supercharger is determined to start three-four;
The calibration interval acquisition module is used for acquiring the calibration interval duration of the air inlet hydraulic cylinder which is later than the opening of the exhaust hydraulic cylinder, wherein the calibration interval duration is calibrated by the air inlet negative pressure limit value before the diameter of the air inlet hydraulic cylinder push rod is adjusted;
The optimal interval determining module is used for continuously collecting air inlet negative pressure values of the air inlet connecting pipe under different interval durations by taking the calibrated interval duration as a maximum value through the negative pressure sensor, comparing the air inlet negative pressure values with the air inlet negative pressure limit value to determine optimal interval duration, wherein the air inlet negative pressure value under the optimal interval duration is smaller than the air inlet negative pressure limit value, and the engine performance of the air inlet hydraulic cylinder is optimal when the air inlet hydraulic cylinder is opened according to the optimal interval duration;
The optimal interval determining module is specifically configured to:
The method comprises the steps of obtaining a unit time interval, determining the interval duration of the current acquisition according to the unit time interval, obtaining an air intake negative pressure value of the current acquisition through the negative pressure sensor when the interval duration of the current acquisition is reached, comparing the air intake negative pressure value of the current acquisition with the air intake negative pressure limit value, recording the current oil consumption value if the air intake negative pressure value of the current acquisition is smaller than the air intake negative pressure limit value, and returning to execute the step of determining the interval duration of the current acquisition according to the unit time interval, ending the acquisition if the air intake negative pressure value of the current acquisition is larger than or equal to the air intake negative pressure limit value, and comparing the recorded oil consumption value, wherein the interval duration corresponding to the minimum oil consumption value is used as the optimal interval duration.
6. A computer program product comprising computer readable instructions which, when run on an electronic device, cause the electronic device to implement a method of protecting actuation of an intake hydraulic cylinder as claimed in any one of claims 1 to 4.
7. An electronic device comprising at least one processor and a memory coupled to the processor, wherein:
The memory is used for storing a computer program;
The processor is configured to execute the computer program to enable the electronic apparatus to implement the drive protection method of an intake hydraulic cylinder according to any one of claims 1 to 4.
8. A computer storage medium carrying one or more computer programs which, when executed by an electronic device, enable the electronic device to implement the method of protecting actuation of an intake hydraulic cylinder according to any one of claims 1 to 4.
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| JP3937791B2 (en) * | 2001-10-15 | 2007-06-27 | 日産自動車株式会社 | Control device for multi-cylinder diesel engine |
| CN114278429B (en) * | 2021-12-30 | 2023-08-18 | 潍柴动力股份有限公司 | Sequential supercharging system control method and device, sequential supercharging system and storage medium |
| CN116335814B (en) * | 2023-03-30 | 2025-06-24 | 潍柴动力股份有限公司 | Control method, control device, storage medium and vehicle for sequential supercharging system |
| CN118653909A (en) * | 2024-06-13 | 2024-09-17 | 潍柴动力股份有限公司 | Control method, device and storage medium electronic device of sequential boosting system |
| CN118582306B (en) * | 2024-08-07 | 2024-12-03 | 潍柴动力股份有限公司 | Engine control method, device, equipment, storage medium and product |
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| CN109667660A (en) * | 2018-12-27 | 2019-04-23 | 潍柴动力股份有限公司 | A kind of sequential pressurizing device and sequential pressurizing method |
| CN109882283A (en) * | 2019-03-27 | 2019-06-14 | 潍柴动力股份有限公司 | A method and device for controlling a sequential supercharging system |
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