CN112282889A - Control system and control method for reducing cold start resistance - Google Patents
Control system and control method for reducing cold start resistance Download PDFInfo
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- CN112282889A CN112282889A CN202011036170.7A CN202011036170A CN112282889A CN 112282889 A CN112282889 A CN 112282889A CN 202011036170 A CN202011036170 A CN 202011036170A CN 112282889 A CN112282889 A CN 112282889A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/16—Controlling lubricant pressure or quantity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/02—Pressure lubrication using lubricating pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/18—Indicating or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/18—Indicating or safety devices
- F01M1/20—Indicating or safety devices concerning lubricant pressure
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- General Engineering & Computer Science (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The control system for reducing the cold start resistance comprises a main oil duct, an oil pump and an oil pan, wherein the oil pump enables oil in the oil pan to reach the main oil duct, and the control system also comprises a pressure relief valve control module, a pressure relief valve driving module and an electric control pressure relief valve; specifically, the method comprises the following steps: the pressure relief valve control module is used for generating a control instruction of the electric control pressure relief valve according to the engine oil temperature and the engine oil pressure; the pressure relief valve driving module is used for driving the electronic control pressure relief valve to open or close and/or adjusting the opening angle of the electronic control pressure relief valve according to the control instruction of the electronic control pressure relief valve; and the electric control pressure relief valve is used for communicating the main oil duct and the oil pan and controlling the engine oil of the main oil duct to flow back to the oil pan. According to the invention, the electronic control pressure relief valve is added, and the pressure limiting valve is controlled to be opened or closed according to the starting state, the starting time, the engine oil pressure or the engine oil temperature, so that low-temperature engine oil is controlled to enter between all parts of the engine, and the friction resistance of cold starting is further reduced.
Description
Technical Field
The application belongs to the technical field of engines, and particularly relates to a control system and a control method for reducing cold start resistance.
Background
Oil pumps are used in engine lubrication and cooling systems to increase the pressure of the oil and help the oil pass from the sump to other lubricated components. At present, valves of an oil pump of a traditional automobile engine comprise a pressure limiting valve, a safety valve and the like, wherein the oil pressure limiting valve is used for limiting oil pressure and preventing the oil pump from being damaged due to overhigh oil pressure.
In the process of cold starting of the engine, as the engine oil reaches the main oil gallery from the oil pan, the oil pressure of the main oil gallery is gradually increased, and then the friction pairs among various parts of the engine, such as a cam bearing, a crank bearing, a push rod and various supports, are filled with the engine oil.
Disclosure of Invention
The invention provides a control system and a control method for reducing cold start resistance, and aims to solve the problems that in the cold start process of an engine in the prior art, friction resistance among various parts is increased due to low-temperature engine oil, and cold start is difficult.
According to a first aspect of the embodiments of the present application, there is provided a control system for reducing cold start resistance, comprising a main oil gallery, an oil pump, an oil pan, a pressure relief valve control module, a pressure relief valve driving module, and an electrically controlled pressure relief valve, wherein the oil pump enables oil in the oil pan to reach the main oil gallery; specifically, the method comprises the following steps:
the pressure relief valve control module is used for generating a control instruction of the electric control pressure relief valve according to the engine oil temperature and the engine oil pressure;
the pressure relief valve driving module is used for driving the electronic control pressure relief valve to open or close and/or adjusting the opening angle of the electronic control pressure relief valve according to the control instruction of the electronic control pressure relief valve;
and the electric control pressure relief valve is used for communicating the main oil duct and the oil pan and controlling the engine oil of the main oil duct to flow back to the oil pan.
In some embodiments of the present application, the pressure relief valve control module is configured to generate an electronically controlled pressure relief valve control command according to the engine oil temperature and the engine oil pressure, and specifically includes:
when the engine oil temperature is less than the temperature threshold; and the number of the first and second electrodes,
and when the engine oil pressure is greater than the pressure threshold, generating an opening instruction or an opening angle increasing instruction of the electronic control pressure release valve.
In some embodiments of the present application, the pressure relief valve control module is configured to generate an electronically controlled pressure relief valve control command according to the engine oil temperature and the engine oil pressure, and specifically includes:
and when the opening time of the electronic control pressure relief valve reaches the opening time threshold of the pressure relief valve, generating a closing instruction or an opening angle reduction instruction of the electronic control pressure relief valve.
In some embodiments of the present application, the control system to reduce cold start resistance further comprises:
the temperature detector is used for detecting the temperature of the engine oil and sending the temperature to the pressure relief valve control module;
and the pressure sensor is used for detecting the engine oil pressure of the main oil gallery and sending the engine oil pressure to the pressure relief valve control module.
In some embodiments of the present application, the control system to reduce cold start resistance further comprises:
and the timer is used for measuring the opening time of the electronic control pressure release valve.
According to a second aspect of the embodiments of the present application, there is provided a control method for reducing cold start resistance, specifically including:
generating a control instruction of the electronic control pressure relief valve according to the engine oil temperature and the engine oil pressure;
driving the electronic control pressure relief valve to open or close and/or adjusting the opening angle of the electronic control pressure relief valve according to the control instruction of the electronic control pressure relief valve;
the electronic control pressure relief valve is used for communicating the main oil gallery and the oil pan and controlling engine oil in the main oil gallery to flow back to the oil pan.
In some embodiments of the present application, an electronically controlled relief valve control command is generated according to the oil temperature and the oil pressure, and specifically includes:
when the engine oil temperature is less than the temperature threshold; and the number of the first and second electrodes,
and when the engine oil pressure is greater than the pressure threshold, generating an opening instruction or an opening angle increasing instruction of the electronic control pressure release valve.
In some embodiments of the present application, an electronically controlled relief valve control command is generated according to the oil temperature and the oil pressure, and specifically includes:
and when the opening time of the electronic control pressure relief valve reaches the opening time threshold of the pressure relief valve, generating a closing instruction or an opening angle reduction instruction of the electronic control pressure relief valve.
In some embodiments of the present application, the relief valve opening time threshold is pre-calibrated based on the oil temperature and the oil pressure.
In some embodiments of the present application, before generating the control command for the electronically controlled relief valve according to the oil temperature and the oil pressure, the method further includes:
an engine start control command is received.
By adopting the control system and the control method for reducing the cold starting resistance, the control system for reducing the cold starting resistance comprises a main oil duct, an oil pump and an oil pan, wherein the oil pump enables oil in the oil pan to reach the main oil duct, and the control system also comprises a pressure relief valve control module, a pressure relief valve driving module and an electric control pressure relief valve; specifically, the method comprises the following steps: the pressure relief valve control module is used for generating a control instruction of the electric control pressure relief valve according to the engine oil temperature and the engine oil pressure; the pressure relief valve driving module is used for driving the electronic control pressure relief valve to open or close and/or adjusting the opening angle of the electronic control pressure relief valve according to the control instruction of the electronic control pressure relief valve; and the electric control pressure relief valve is used for communicating the main oil duct and the oil pan and controlling the engine oil of the main oil duct to flow back to the oil pan. According to the invention, the electronic control pressure relief valve is added, and the pressure limiting valve is controlled to be opened or closed according to the starting state, the starting time, the engine oil pressure or the engine oil temperature, so that low-temperature engine oil is controlled to enter between all parts of the engine, and the friction resistance of cold starting is further reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic diagram illustrating a control system for reducing cold start resistance according to an embodiment of the present application;
FIG. 2 illustrates a schematic diagram of a control system for reducing cold start resistance in accordance with another embodiment of the present application;
FIG. 3 illustrates a control logic diagram for a control system for reducing cold start resistance in accordance with an embodiment of the present application;
FIG. 4 is a flow chart illustrating steps of a control method for reducing cold start resistance according to an embodiment of the present application.
Detailed Description
In the process of implementing the present application, the inventor finds that in the process of cold starting of the engine, as the engine oil reaches the main oil gallery from the oil pan, the oil pressure of the main oil gallery is gradually increased, so that the friction pairs among various parts of the engine, such as the cam bearing, the crank bearing, the push rod and various supports, are filled with the engine oil, but due to the low-temperature characteristic of the engine oil, as the temperature of the engine oil is reduced, the friction resistance among the friction pairs is increased, so that the resistance during cold starting is increased, the final starting is difficult, and the success rate of the cold starting is greatly influenced.
In order to solve the above problems, an embodiment of the present application provides a control system and a control method for reducing cold start resistance, where the control system for reducing cold start resistance includes a main oil gallery, an oil pump, and an oil pan, where the oil pump makes oil in the oil pan reach the main oil gallery, and further includes a pressure relief valve control module, a pressure relief valve driving module, and an electrically controlled pressure relief valve; specifically, the method comprises the following steps: the pressure relief valve control module is used for generating a control instruction of the electric control pressure relief valve according to the engine oil temperature and the engine oil pressure; the pressure relief valve driving module is used for driving the electronic control pressure relief valve to open or close and/or adjusting the opening angle of the electronic control pressure relief valve according to the control instruction of the electronic control pressure relief valve; and the electric control pressure relief valve is used for communicating the main oil duct and the oil pan and controlling the engine oil of the main oil duct to flow back to the oil pan. According to the invention, the electronic control pressure relief valve is added, and the pressure limiting valve is controlled to be opened or closed according to the starting state, the starting time, the engine oil pressure or the engine oil temperature, so that low-temperature engine oil is controlled to enter between all parts of the engine, and the friction resistance of cold starting is further reduced.
In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
Example 1
A schematic diagram of a control system for reducing cold start resistance according to an embodiment of the present application is shown in fig. 1.
As shown in fig. 1, the engine start control system generally includes a main oil gallery 40, an oil pump 50, and an oil pan 60, wherein the oil pump 50 makes oil in the oil pan 60 reach the main oil gallery 40, and when the oil in the main oil gallery 40 reaches a certain pressure, the oil in the main oil gallery 40 fills up various parts of the engine, such as a cam bearing, a crank bearing, a push rod, and various brackets, so that the friction pair is filled with the oil, and finally, the cold start of the engine is realized.
The control system for reducing the cold start resistance of the embodiment further comprises a pressure relief valve control module 10, a pressure relief valve driving module 20 and an electronic control pressure relief valve 30; specifically, the method comprises the following steps:
the pressure relief valve control module 10 is used for generating an electric control pressure relief valve control instruction according to the engine oil temperature and the engine oil pressure;
the pressure relief valve driving module 20 is used for driving the electronic control pressure relief valve to open or close and/or adjusting the opening angle of the electronic control pressure relief valve 30 according to the control instruction of the electronic control pressure relief valve;
and the electronic control pressure relief valve 30 is used for communicating the main oil gallery 40 and the oil pan 60 and controlling the oil in the main oil gallery 40 to flow back to the oil pan 60.
In some embodiments of the present application, the control system to reduce cold start resistance further comprises:
the temperature detector is used for detecting the temperature of the engine oil and sending the temperature to the pressure relief valve control module 10;
and the number of the first and second groups,
and the pressure sensor is used for detecting the engine oil pressure of the main oil gallery and sending the engine oil pressure to the pressure relief valve control module 10.
Specifically, the temperature sensor detects the oil temperature of the main oil gallery 40; the pressure sensor detects the oil pressure of the main gallery 40.
In some embodiments of the present application, the pressure relief valve control module 10 is configured to generate an electronically controlled pressure relief valve control instruction according to the engine oil temperature and the engine oil pressure, and specifically includes:
when the engine oil temperature is less than the temperature threshold; and the number of the first and second electrodes,
and when the engine oil pressure is greater than the pressure threshold, generating an opening instruction or an opening angle increasing instruction of the electronic control pressure release valve.
In this example, the temperature threshold was set at 20 ℃ below zero and the pressure threshold was set at 120 kp. When the engine oil temperature is detected to be lower than minus 20 ℃, and the engine oil pressure of the main oil gallery 40 is higher than 120kp, the pressure relief valve control module 10 generates an opening instruction of the electronic control pressure relief valve, and the pressure relief valve driving module 20 drives the electronic control pressure relief valve 30 to open according to the opening instruction of the electronic control pressure relief valve. Furthermore, the engine oil in the main oil gallery 40 flows back to the oil pan 60 through the communication branch where the electrically controlled pressure relief valve 30 is located, the oil pressure in the main oil gallery 40 is reduced, the engine oil flowing from the main oil gallery 40 to various parts of the engine, such as a cam bearing, a crank bearing, a push rod and various supports, is reduced, the friction resistance between friction pairs caused by the low-temperature engine oil is reduced, the friction resistance of cold start is further reduced, and the success rate of cold start of the engine is improved.
In some embodiments of the present application, the pressure relief valve control module 10 is configured to generate an electronically controlled pressure relief valve control instruction according to the engine oil temperature and the engine oil pressure, and further specifically includes:
and when the opening time of the electronic control pressure relief valve 30 reaches the threshold value of the opening time of the pressure relief valve, generating a closing instruction or an opening angle reduction instruction of the electronic control pressure relief valve.
The opening time threshold of the pressure release valve is calibrated in advance according to the engine oil temperature and the engine oil pressure.
For example: when the temperature of engine oil is 30 ℃ below zero and the pressure threshold is 100kp, calibrating the opening time threshold of the pressure release valve in advance to be 15 seconds;
when the temperature of engine oil is minus 25 ℃ and the pressure threshold is 100kp, calibrating the opening time threshold of the pressure relief valve in advance to be 10 seconds;
when the temperature of engine oil is 20 ℃ below zero and the pressure threshold is 100kp, calibrating the opening time threshold of the pressure release valve in advance to be 5 seconds;
when the temperature of engine oil is 10 ℃ below zero and the pressure threshold is 100kp, the opening time threshold of the pressure release valve is calibrated in advance to be 0 second.
Specifically, the control system for reducing the cold starting resistance further comprises a timer or a time delay device, and the timer or the time delay device is used for measuring the opening time of the electronic control pressure release valve.
For example, when the oil temperature is minus 30 ℃ and the pressure threshold is 100kp, the electronically controlled pressure release valve 30 is opened when reaching the opening condition, the timer and the time delay unit count the time, and when the opening time of the electronically controlled pressure release valve 30 reaches 15 seconds, the pressure release valve control module 10 generates a closing instruction of the electronically controlled pressure release valve 30.
The lower the engine oil temperature is, the longer the time allowed for opening the pressure limiting valve is, and when the starting is finished or the time exceeds the time allowed for opening, the pressure limiting valve is closed, so that the lubrication between the friction pairs is ensured, and the engine is prevented from being damaged. When the engine oil is high, the pressure limiting valve can not be opened, because the engine oil is high in temperature and small in friction resistance, the pressure limiting valve does not need to be opened.
FIG. 2 illustrates a schematic diagram of a control system for reducing cold start resistance, according to another embodiment of the present application.
In order to facilitate a better understanding of the position and the principle of action of the electronically controlled pressure relief valve 30 compared to the control system of fig. 1 for reducing the cold start resistance, fig. 2 shows in more detail other peripheral mechanical components of the control system, the oil pan flow to the main oil gallery branch including an oil pump, an oil filter and an oil cooler, and correspondingly, mechanical valves such as a flow divider, a pressure differential valve and a pressure limiting valve. The mechanical parts in the middle of the oil pan for the engine oil of the main oil duct flow comprise a cylinder cover, a rocker arm support, a rocker arm base branch, a tappet push rod branch, a branch consisting of a camshaft bearing, a crank shaft bearing, a connecting rod shaft bearing, an auxiliary oil duct, a high-pressure oil pump and a nozzle, and in addition, the mechanical parts comprise a supercharger, an air compressor, a middle gear bearing and the like, and the mechanical parts are not described one by one.
A control logic diagram for a control system that reduces cold start resistance according to an embodiment of the present application is shown in fig. 3.
As shown in fig. 3, first, the Oil temperature (Oil _ tsswmp) is compared with a temperature threshold, i.e., a pressure limiting valve Oil temperature opening limit (Oil _ tdevallmin _ C); comparing the Oil pressure (Oil _ pSwmp) with a pressure threshold, i.e., a pressure limiting valve pressure opening limit (Oil _ pDeValMin _ C); when the temperature of the engine oil is smaller than the temperature threshold value, and simultaneously when the pressure of the engine oil is larger than the pressure threshold value, the output is 1;
secondly, calculating and calibrating a pressure relief valve opening time threshold value through an Oil _ tidefal _ MAP (Oil _ tidefal _ MAP) according to the Oil pressure (Oil _ pSwmp) and the Oil temperature (Oil _ tSwmp), and outputting 1 when the opening time threshold value of the pressure relief valve is not exceeded through negation logic within the range of the opening time threshold value of the pressure relief valve;
when a start command (Strt _ st) is received, the output is 1;
finally, when the simultaneous output is detected to be 1, the pressure relief valve control module 10 controls the output of the opening state (Oil _ stDeVal) of the pressure limiting valve to be 1, that is, the electrically controlled pressure relief valve 30 is opened.
The control system for reducing the cold start resistance comprises a main oil duct, an oil pump and an oil pan, wherein the oil pump enables oil in the oil pan to reach the main oil duct, and the control system further comprises a pressure relief valve control module, a pressure relief valve driving module and an electric control pressure relief valve; specifically, the method comprises the following steps: the pressure relief valve control module is used for generating a control instruction of the electric control pressure relief valve according to the engine oil temperature and the engine oil pressure; the pressure relief valve driving module is used for driving the electronic control pressure relief valve to open or close and/or adjusting the opening angle of the electronic control pressure relief valve according to the control instruction of the electronic control pressure relief valve; and the electric control pressure relief valve is used for communicating the main oil duct and the oil pan and controlling the engine oil of the main oil duct to flow back to the oil pan. According to the embodiment of the application, the electronic control pressure relief valve is additionally arranged, and the pressure limiting valve is controlled to be opened or closed according to the starting state, the starting time, the engine oil pressure or the engine oil temperature, so that low-temperature engine oil is controlled to enter parts of the engine, and the friction resistance of cold starting is further reduced.
Example 2
For details not disclosed in the control method for reducing cold start resistance of the present embodiment, please refer to implementation contents of the control system for reducing cold start resistance in other embodiments.
FIG. 4 is a flow chart illustrating steps of a control method for reducing cold start resistance according to an embodiment of the present application.
As shown in fig. 4, the control method for reducing cold start resistance of the present embodiment specifically includes:
and S101, generating a control instruction of the electric control pressure relief valve according to the engine oil temperature and the engine oil pressure.
Specifically, according to machine oil temperature and machine oil pressure, generate automatically controlled relief valve control command, include:
when the engine oil temperature is less than the temperature threshold; and the number of the first and second electrodes,
and when the engine oil pressure is greater than the pressure threshold, generating an opening instruction or an opening angle increasing instruction of the electronic control pressure release valve.
Specifically, according to machine oil temperature and machine oil pressure, generate automatically controlled relief valve control command, still include:
and when the opening time of the electronic control pressure relief valve reaches the opening time threshold of the pressure relief valve, generating a closing instruction or an opening angle reduction instruction of the electronic control pressure relief valve.
In some embodiments of the present application, the relief valve opening time threshold is pre-calibrated based on the oil temperature and the oil pressure.
In some embodiments of the present application, before generating the control command for the electronically controlled relief valve according to the oil temperature and the oil pressure, the method further includes: an engine start control command is received.
S102, driving the electronic control pressure relief valve to open or close and/or adjusting the opening angle of the electronic control pressure relief valve according to the control instruction of the electronic control pressure relief valve;
the electronic control pressure relief valve is used for communicating the main oil gallery and the oil pan and controlling engine oil in the main oil gallery to flow back to the oil pan.
The engine starting control system generally comprises a main oil duct, an oil pump and an oil sump, wherein the oil pump enables oil in the oil sump to reach the main oil duct, and when the oil in the main oil duct reaches a certain pressure, the oil in the main oil duct fills all parts of the engine, such as a cam bearing, a crank bearing, a push rod and all supports, so that the friction pair is filled with the oil, and finally, the cold start of the engine is realized.
In this example, the temperature threshold was set at 20 ℃ below zero and the pressure threshold was set at 120 kp. And when the engine oil temperature is detected to be lower than minus 20 ℃, and the engine oil pressure of the main oil duct 40 is higher than 120kp, generating an opening instruction of the electronic control pressure release valve, and driving the electronic control pressure release valve to open according to the opening instruction of the electronic control pressure release valve. Furthermore, the engine oil in the main oil duct flows back to the oil pan through the communication branch where the electrically controlled pressure relief valve is located, the pressure of the engine oil in the main oil duct is reduced, the engine oil flowing from the main oil duct to various parts of the engine, such as a cam bearing, a crank bearing, a push rod and the engine oil among various supports, is reduced, the friction resistance between friction pairs caused by the low-temperature engine oil is reduced, the friction resistance of cold starting is further reduced, and the success rate of cold starting of the engine is improved.
According to the control method for reducing the cold start resistance, firstly, a control instruction of the electronic control pressure release valve is generated according to the engine oil temperature and the engine oil pressure; secondly, driving the electronic control pressure relief valve to open or close and/or adjusting the opening angle of the electronic control pressure relief valve according to the control instruction of the electronic control pressure relief valve; the electronic control pressure relief valve is used for communicating the main oil gallery and the oil pan and controlling engine oil in the main oil gallery to flow back to the oil pan. According to the embodiment of the application, the electronic control pressure relief valve is additionally arranged, and the pressure limiting valve is controlled to be opened or closed according to the starting state, the starting time, the engine oil pressure or the engine oil temperature, so that low-temperature engine oil is controlled to enter parts of the engine, and the friction resistance of cold starting is further reduced.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. A control system for reducing cold starting resistance comprises a main oil duct, an oil pump and an oil pan, wherein the oil pump enables the oil in the oil pan to reach the main oil duct; specifically, the method comprises the following steps:
the pressure relief valve control module is used for generating a control instruction of the electric control pressure relief valve according to the engine oil temperature and the engine oil pressure;
the pressure relief valve driving module is used for driving the electronic control pressure relief valve to open or close and/or adjusting the opening angle of the electronic control pressure relief valve according to the control instruction of the electronic control pressure relief valve;
and the electric control pressure relief valve is used for communicating the main oil duct and the oil pan and controlling the engine oil in the main oil duct to flow back to the oil pan.
2. The control system for reducing the cold start resistance according to claim 1, wherein the pressure relief valve control module is configured to generate a control command for the electronically controlled pressure relief valve according to the engine oil temperature and the engine oil pressure, and specifically comprises:
when the engine oil temperature is less than the temperature threshold; and the number of the first and second electrodes,
and when the engine oil pressure is greater than the pressure threshold, generating an opening instruction or an opening angle increasing instruction of the electronic control pressure release valve.
3. The control system for reducing the cold start resistance according to claim 1 or 2, wherein the pressure relief valve control module is configured to generate an electronically controlled pressure relief valve control command according to the engine oil temperature and the engine oil pressure, and specifically comprises:
and when the opening time of the electronic control pressure relief valve reaches the opening time threshold of the pressure relief valve, generating a closing instruction or an opening angle reduction instruction of the electronic control pressure relief valve.
4. The control system for reducing cold start resistance of claim 1, further comprising:
the temperature detector is used for detecting the temperature of the engine oil and sending the temperature to the pressure relief valve control module;
and the pressure sensor is used for detecting the engine oil pressure of the main oil gallery and sending the engine oil pressure to the pressure relief valve control module.
5. The control system for reducing cold start resistance of claim 1, further comprising:
and the timer is used for measuring the opening time of the electronic control pressure release valve.
6. A control method for reducing cold start resistance is characterized by specifically comprising the following steps:
generating a control instruction of the electronic control pressure relief valve according to the engine oil temperature and the engine oil pressure;
driving the electronic control pressure relief valve to open or close and/or adjusting the opening angle of the electronic control pressure relief valve according to the control instruction of the electronic control pressure relief valve;
the electronic control pressure relief valve is used for communicating the main oil gallery and the oil pan and controlling engine oil in the main oil gallery to flow back to the oil pan.
7. The control method for reducing the cold start resistance according to claim 6, wherein the generating of the control command of the electrically controlled relief valve according to the oil temperature and the oil pressure specifically comprises:
when the engine oil temperature is less than the temperature threshold; and the number of the first and second electrodes,
and when the engine oil pressure is greater than the pressure threshold, generating an opening instruction or an opening angle increasing instruction of the electronic control pressure release valve.
8. The control method for reducing the cold start resistance according to claim 6 or 7, wherein the generating of the control command of the electrically controlled relief valve according to the oil temperature and the oil pressure specifically comprises:
and when the opening time of the electronic control pressure relief valve reaches the opening time threshold of the pressure relief valve, generating a closing instruction or an opening angle reduction instruction of the electronic control pressure relief valve.
9. The control method for reducing cold start resistance according to claim 8, wherein the relief valve opening time threshold is pre-calibrated based on the oil temperature and the oil pressure.
10. The control method for reducing cold start resistance according to claim 6, wherein before generating the control command for the electronically controlled relief valve according to the oil temperature and the oil pressure, the method further comprises:
an engine start control command is received.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (1)
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| CN113047975A (en) * | 2021-03-23 | 2021-06-29 | 无锡威孚高科技集团股份有限公司 | Control method of electric control pressure relief valve in diesel engine fuel system |
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