Lubricating system, oil pump control method, controller and vehicle
阅读说明：本技术 润滑系统、机油泵控制方法、控制器和车辆 (Lubricating system, oil pump control method, controller and vehicle ) 是由 刘海滨 张俊龙 么丽丽 王洪忠 于 2020-06-29 设计创作，主要内容包括：本申请提供一种润滑系统、机油泵控制方法、控制器和车辆。此润滑系统,应用于发动机,包括：主油道、机油泵、节流阀、控制器、压力传感器；所述机油泵包括第一供油主体和第二供油主体；所述第一供油主体和所述第二供油主体分别通过所述主油道向所述发动机输送机油；所述节流阀设置于所述第二供油主体的进油管道上,用于控制所述第二供油主体的进油量；所述压力传感器用于采集所述主油道内的机油压力信号；所述控制器分别与所述节流阀和所述压力传感器相连,用于获取所述压力传感器采集到的机油压力信号,并根据所述机油压力信号控制所述节流阀的开闭,以控制所述第二供油主体开始或停止向所述发动机输送机油。(The application provides a lubricating system, an oil pump control method, a controller and a vehicle. The lubricating system is applied to an engine and comprises: the system comprises a main oil duct, an oil pump, a throttle valve, a controller and a pressure sensor; the oil pump comprises a first oil supply main body and a second oil supply main body; the first oil supply main body and the second oil supply main body respectively convey engine oil to the engine through the main oil gallery; the throttle valve is arranged on an oil inlet pipeline of the second oil supply main body and used for controlling the oil inlet amount of the second oil supply main body; the pressure sensor is used for collecting an engine oil pressure signal in the main oil gallery; the controller is respectively connected with the throttle valve and the pressure sensor and is used for acquiring an engine oil pressure signal acquired by the pressure sensor and controlling the throttle valve to be opened or closed according to the engine oil pressure signal so as to control the second oil supply main body to start or stop engine oil delivery to the engine.)
1. A lubrication system for an engine, the system comprising: the system comprises a main oil duct, an oil pump, a throttle valve, a controller and a pressure sensor;
the oil pump comprises a first oil supply main body and a second oil supply main body; the first oil supply main body and the second oil supply main body respectively convey engine oil to the engine through the main oil gallery;
the throttle valve is arranged on an oil inlet pipeline of the second oil supply main body and used for controlling the oil inlet amount of the second oil supply main body;
the pressure sensor is used for collecting an engine oil pressure signal in the main oil gallery;
the controller is respectively connected with the throttle valve and the pressure sensor and is used for acquiring an engine oil pressure signal acquired by the pressure sensor and controlling the throttle valve to be opened or closed according to the engine oil pressure signal so as to control the second oil supply main body to start or stop engine oil delivery to the engine.
2. The system of claim 1, further comprising: a valve; the valve is arranged on an oil outlet pipeline of the second oil supply main body;
the controller is also connected with the valve and used for controlling the opening and closing of the valve according to the opening and closing of the throttle valve so as to control the flowing direction of the engine oil of the second oil supply main body.
3. The system of claim 1, further comprising: a one-way valve;
the check valve is arranged on the oil outlet pipeline of the second oil supply main body and used for controlling the flowing direction of the engine oil of the second oil supply main body.
4. The system of any of claims 1-3, wherein the oil pump further comprises: a drive shaft;
the first oil supply body and the second oil supply body are provided on the drive shaft.
5. An oil pump control method, characterized by being applied to the lubrication system according to any one of claims 1 to 4, the method comprising:
acquiring an engine oil pressure signal in a main oil duct;
and controlling the opening and closing of the throttle valve according to the oil pressure signal so as to control the second oil supply main body to start or stop oil supply to the engine.
6. The method of claim 5, wherein said controlling opening and closing of a throttle valve based on said oil pressure signal comprises:
if the engine oil pressure signal is smaller than a preset value, controlling the throttle valve to open;
and if the engine oil pressure signal is greater than or equal to a preset value, controlling the throttle valve to be closed.
7. A controller, comprising:
the acquisition module is used for acquiring an engine oil pressure signal in the main oil gallery;
and the control module is used for controlling the opening and closing of the throttle valve according to the engine oil pressure signal so as to control the second oil supply main body to start or stop engine oil delivery to the engine.
8. A controller, comprising: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executing the computer-executable instructions stored by the memory causes the at least one processor to perform the method of claim 5 or 6.
9. A computer-readable storage medium having computer-executable instructions stored thereon which, when executed by a processor, implement the method of claim 5 or 6.
10. A vehicle, characterized by comprising: the lubrication system of any one of claims 1 to 4.
Technical Field
The application relates to the technical field of engines, in particular to a lubricating system, an oil pump control method, a controller and a vehicle.
Background
The engine is the core component of the vehicle. Because of the large amount of friction loss generated during the operation of the engine, the engine is generally provided with a lubricating system.
Disclosure of Invention
The application provides a lubricating system, an oil pump control method, a controller and a vehicle, and provides another mode for controlling the oil pressure of a main oil duct, so that the problem of energy waste caused by oil return of the oil pump is solved.
In a first aspect, the present application provides a lubrication system for use with an engine, the system comprising: the system comprises a main oil duct, an oil pump, a throttle valve, a controller and a pressure sensor; the oil pump comprises a first oil supply main body and a second oil supply main body; the first oil supply main body and the second oil supply main body respectively convey engine oil to the engine through the main oil gallery; the throttle valve is arranged on an oil inlet pipeline of the second oil supply main body and used for controlling the oil inlet amount of the second oil supply main body; the pressure sensor is used for collecting an engine oil pressure signal in the main oil gallery; the controller is respectively connected with the throttle valve and the pressure sensor and is used for acquiring an engine oil pressure signal acquired by the pressure sensor and controlling the throttle valve to be opened or closed according to the engine oil pressure signal so as to control the second oil supply main body to start or stop engine oil delivery to the engine.
In one possible design, the lubrication system further includes: a valve; the valve is arranged on an oil outlet pipeline of the second oil supply main body; the controller is also connected with the valve and used for controlling the opening and closing of the valve according to the opening and closing of the throttle valve so as to control the flowing direction of the engine oil of the second oil supply main body.
In one possible design, the lubrication system further includes: a one-way valve; the check valve is arranged on the oil outlet pipeline of the second oil supply main body and used for controlling the flowing direction of the engine oil of the second oil supply main body.
In one possible design, the oil pump further includes: a drive shaft; the first oil supply body and the second oil supply body are provided on the drive shaft.
In a second aspect, the present application provides an oil pump control method applied to the lubrication system according to the first aspect, the method including: acquiring an engine oil pressure signal in a main oil duct; and controlling the opening and closing of the throttle valve according to the oil pressure signal so as to control the second oil supply main body to start or stop oil supply to the engine.
In one possible design, the controlling the opening and closing of the throttle valve according to the oil pressure signal includes: if the engine oil pressure signal is smaller than a preset value, controlling the throttle valve to open; and if the engine oil pressure signal is greater than or equal to a preset value, controlling the throttle valve to be closed.
In a third aspect, the present application provides a controller comprising: the acquisition module is used for acquiring an engine oil pressure signal in the main oil gallery; and the control module is used for controlling the opening and closing of the throttle valve according to the engine oil pressure signal so as to control the second oil supply main body to start or stop engine oil delivery to the engine.
In one possible design, the control module is specifically configured to: when the engine oil pressure signal is smaller than a preset value, controlling the throttle valve to open; and when the engine oil pressure signal is greater than or equal to a preset value, controlling the throttle valve to be closed.
In a fourth aspect, the present application provides a controller comprising: at least one processor and memory; the memory stores computer-executable instructions; the at least one processor executing the computer-executable instructions stored by the memory causes the at least one processor to perform the method of the second aspect.
In a fifth aspect, the present application provides a computer-readable storage medium having stored thereon computer-executable instructions that, when executed by a processor, implement the method of the second aspect.
In a sixth aspect, the present application provides a program product comprising a computer program stored in a readable storage medium, the computer program being readable from the readable storage medium by a processor of a controller, the processor executing the computer program to cause the controller to carry out the method according to the second aspect.
In a seventh aspect, the present application provides a vehicle comprising: the lubrication system according to the first aspect.
The application provides a lubricating system, an oil pump control method, a controller and a vehicle. This lubricating system, apply to the engine, the said system includes: the system comprises a main oil duct, an oil pump, a throttle valve, a controller and a pressure sensor; the oil pump comprises a first oil supply main body and a second oil supply main body; the first oil supply main body and the second oil supply main body respectively convey engine oil to the engine through the main oil gallery; the throttle valve is arranged on an oil inlet pipeline of the second oil supply main body and used for controlling the oil inlet amount of the second oil supply main body; the pressure sensor is used for collecting an engine oil pressure signal in the main oil gallery; the controller is respectively connected with the throttle valve and the pressure sensor and is used for acquiring an engine oil pressure signal acquired by the pressure sensor and controlling the throttle valve to be opened or closed according to the engine oil pressure signal so as to control the second oil supply main body to start or stop engine oil delivery to the engine. The controller can control the opening and closing of the throttle valve according to the engine oil pressure signal so as to adjust whether the second oil supply main body conveys engine oil to the engine or not, and therefore the engine oil pressure in the main oil gallery is stabilized in a mode of dynamically controlling the oil quantity. The problem of energy waste caused by an oil return mode of the oil pump is avoided.
Drawings
In order to more clearly illustrate the technical solutions in the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
FIG. 1 is a graphical illustration of engine speed versus oil pressure provided herein;
FIG. 2 is a schematic diagram of a lubrication system according to the present application;
FIG. 3 is a schematic diagram of a lubrication system according to an embodiment of the present application;
FIG. 4 is a flow chart of a method of controlling an oil pump according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a controller according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a controller according to an embodiment of the present application;
FIG. 7 is a schematic structural diagram of an engine provided in an embodiment of the present application;
FIG. 8 is a schematic structural diagram of a vehicle according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of a vehicle according to an embodiment of the present application.
Detailed Description
To make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be clearly and completely described below with reference to the drawings in the present application, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Existing lubrication systems typically include an oil pump that delivers oil from an oil sump located at the bottom of the engine up through an oil conduit to various components in the engine for lubrication. The lubricated oil flows back to the oil pan again, thus forming a circulation.
The engine speed is different under different working conditions. Because the power of the oil pump is derived from the crankshaft of the engine, the oil pressure is also affected by the engine speed. An increase in engine speed may cause an increase in oil pressure in the engine oil line. In order to regulate the oil pressure in the oil line, a pressure limiting valve is also provided in the lubricating system. When the pressure of the engine oil is increased to a certain value, the pressure limiting valve can be automatically opened, and the engine oil flowing out of the oil outlet of the engine oil pump flows back to the oil pan through the pressure limiting valve, so that the effect of reducing the pressure of the main oil duct is achieved.
FIG. 1 is a graphical representation of engine speed versus oil pressure for one type of engine provided herein. As shown in fig. 1, several stages typically occur during engine startup until maximum speed is reached. After ignition, the engine reaches an idle point n0 first, and the corresponding oil pressure is P0. With acceleration, the engine speed will reach the maximum torque speed point n1, where the corresponding oil pressure is P1. P1 is the maximum oil pressure point needed by the engine lubrication, therefore, when the pressure value is exceeded, the pressure limiting valve will be pushed open by the oil pressure, and the oil will start to flow back. And meanwhile, the oil pressure is kept in a stable interval. Continuing to accelerate, the oil pressure will also increase to P2 when the engine speed reaches n 2.
From the above analysis, it can be determined that the area marked by the shaded portion in fig. 1 can represent the portion where the oil flows back. And the part of engine oil backflow is a part of useless work done by the engine oil pump, so that energy waste is caused.
Based on the above, the application provides a lubricating system, an oil pump control method, a controller and a vehicle. Provides a new way of adjusting the oil pressure to avoid energy waste.
Fig. 2 is a schematic diagram of an architecture of a lubrication system provided in the present application. As shown in fig. 2, the system provided in this embodiment includes an
Fig. 3 is a schematic structural diagram of a lubrication system according to an embodiment of the present application. As shown in fig. 3, the lubrication system is applied to an engine, and includes: a
The
The
The
The
The application provides a lubricating system, is applied to the engine, includes: the system comprises a main oil duct, an oil pump, a throttle valve, a controller and a pressure sensor; the oil pump comprises a first oil supply main body and a second oil supply main body; the first oil supply main body and the second oil supply main body respectively convey engine oil to the engine through a main oil duct; the throttle valve is arranged on an oil inlet pipeline of the second oil supply main body and used for controlling the oil inlet amount of the second oil supply main body; the pressure sensor is used for collecting engine oil pressure signals in the main oil gallery; the controller is respectively connected with the throttle valve and the pressure sensor and used for acquiring the engine oil pressure signal acquired by the pressure sensor and controlling the throttle valve to open or close according to the engine oil pressure signal so as to control the second oil supply main body to start or stop delivering the engine oil to the engine. The controller can control the opening and closing of the throttle valve according to the engine oil pressure signal so as to adjust whether the second oil supply main body conveys engine oil to the engine or not, and therefore the engine oil pressure in the main oil gallery is stabilized in a mode of dynamically controlling the oil quantity. The problem of energy waste caused by an oil return mode of the oil pump is avoided.
The "oil pump" in the present application is a generic term for an oil pumping mechanism of an engine lubrication system, and does not limit the number of pump bodies included therein. The pump body refers to a rotor type oil pump and/or a gear type oil pump.
The first oil supply main body and the second oil supply main body can also comprise a plurality of pump bodies, limitation is not made in the application, and the adjustment can be carried out according to the flow rate of the pump bodies and the actual condition of the engine in the specific implementation process.
Aiming at the oil supply main body, the prefixes of 'first' and 'second' are adopted in the application, and the working modes of the oil supply main body are only distinguished. The working mode of the first oil supply main body is normally open, namely, the first oil supply main body starts to supply oil from the start of the engine until the engine is shut down. The working mode of the second oil supply main body is controllable, namely controlled by the opening and closing state of a throttle valve arranged on an oil inlet pipeline of the second oil supply main body.
It will be appreciated that the throttle valve does not directly control the second oil supply body, but indirectly affects the operating state of the second oil supply body by restricting the flow of oil.
Specifically, when the throttle valve is opened, the oil path where the second oil supply main body is located is smooth, and the oil pump in the oil pan can be normally started and conveyed upwards. When the throttle valve is closed, the oil inlet pipeline of the second oil supply main body is sealed, and the second oil supply main body can not convey the engine oil in the oil pan upwards. In this case, the second oil supply body does not function to transport the oil. Thus, a change in what is referred to as an operating mode is considered controllable.
As for the condition that the controller controls the throttle valve to open or close, the magnitude of the oil pressure signal may be mentioned, but the specific value thereof may vary according to the type of the engine and is not limited in this application.
In conjunction with the above description with respect to fig. 1, it may be determined that the condition for the controller to control the throttle closure is that the oil pressure signal reaches P1, which is a pressure value corresponding to the engine torque capacity point n 1. Based on this, the person skilled in the art can determine the value of point P1 of the target engine by some technical means before implementing the solution of the present application.
The capacity of the pump bodies of the first oil feed body and the second oil feed body may be selected according to actual requirements of the engine.
Preferably, the maximum flow rate of the first oil supply main body is a flow rate corresponding to the engine maximum torque and rotation speed point n 1; the maximum flow rate of the second oil supply main body is the oil return flow rate after the engine maximum torque rotation speed point n 1.
In some embodiments, the controller may be an Electronic Control Unit (ECU), i.e., a vehicle controller.
In other embodiments, the controller may be a separate control device.
In some embodiments, the pressure sensor may be an oil pressure sensor, i.e., a sensor disposed on the main oil gallery for detecting the oil pressure in the main oil gallery.
In the course of the inventors' realisation of the solution of the present application, it was found that in some embodiments, the oil in the conduit will flow back into the cavity of the pump body of the second oil supply body, under the influence of gravity, after the throttle valve has been closed. Thus, the pump body is still subjected to the resistance of the engine oil to work, resulting in partial consumption of energy. This problem can be solved by further restricting the backflow of the oil.
In some embodiments, a valve may be added to the lubrication system described above. The valve is arranged on an oil outlet pipeline of the second oil supply main body; the controller is also connected with the valve and is used for controlling the opening and closing of the valve according to the opening and closing of the throttle valve so as to control the oil flowing direction of the second oil supply main body.
The controller can control the valve to close while controlling the throttle valve to close, so as to block the oil backflow.
In other embodiments, a
The way of arranging the one-way valve will be simpler. The backflow of the engine oil can be directly blocked by the working property of the check valve, and other control modes are not required to be arranged.
In some embodiments, the oil pump may further include: a
The first oil supply body and the second oil supply body are arranged on the
In fig. 3, 38 is an oil pan, solid lines indicate oil delivery passages, and arrows indicate oil flow.
The lubricating system further includes other devices and structures such as a cooler and a filter, which together complete all functions of the lubricating system, and are not described in detail herein.
Fig. 4 is a flowchart of an oil pump control method according to an embodiment of the present disclosure. The execution subject of the method can be an ECU, and the method comprises the following steps:
s401, obtaining an engine oil pressure signal in the main oil gallery.
As described above, the oil pressure signal may be collected by an oil pressure sensor. The ECU can acquire the signals acquired by the engine oil pressure sensor.
And S402, controlling the opening and closing of the throttle valve according to the oil pressure signal so as to control the second oil supply main body to start or stop oil supply to the engine.
In some embodiments, controlling the opening and closing of the throttle valve based on the oil pressure signal includes: if the engine oil pressure signal is smaller than a preset value, controlling the throttle valve to open; and if the engine oil pressure signal is greater than or equal to the preset value, controlling the throttle valve to be closed.
The specific implementation process of the method can refer to the above embodiments, and the implementation manner and the technical effect are similar, which are not described herein again.
Fig. 5 is a schematic structural diagram of a controller according to an embodiment of the present application. As shown in fig. 5, the controller 500 of the present embodiment includes: an
The obtaining
The
In some embodiments, the
For the specific implementation process of the controller in this embodiment, reference may be made to the above embodiments, and the implementation manner and the technical effect are similar, which are not described herein again.
Fig. 6 is a schematic structural diagram of a controller according to an embodiment of the present application. As shown in fig. 6, the controller 600 of the present embodiment includes: a
The
The at least one
In some embodiments, the at least one
For the specific implementation process of the controller in this embodiment, reference may be made to the above embodiments, and the implementation manner and the technical effect are similar, which are not described herein again.
Fig. 7 is a schematic structural diagram of an engine according to an embodiment of the present application, and as shown in fig. 7, an engine 700 according to the present embodiment includes: the lubrication system 701. The lubrication system 701 may employ the structure of the corresponding embodiment of fig. 3.
The scheme of the application can be improved and realized based on the current engine structure, and is easy to realize. The engine that this application provided can be applicable to ordinary family car, also can be applicable to the abominable commercial car of operational environment.
Fig. 8 is a schematic structural diagram of a vehicle according to an embodiment of the present application, and as shown in fig. 8, a vehicle 800 according to the embodiment includes: a lubrication system 801. The lubrication system 801 may adopt the structure of the corresponding embodiment of fig. 3.
Fig. 9 is a schematic structural diagram of a vehicle according to an embodiment of the present application, and as shown in fig. 9, a vehicle 900 according to the embodiment includes: an
The present application further provides a computer-readable storage medium, in which computer-executable instructions are stored, and when a processor executes the computer-executable instructions, the method in the above embodiment is implemented.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules is only one logical division, and other divisions may be realized in practice, for example, a plurality of modules may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.
The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to implement the solution of the present embodiment.
In addition, functional modules in the embodiments of the present invention may be integrated into one processing unit, or each module may exist alone physically, or two or more modules are integrated into one unit. The unit formed by the modules can be realized in a hardware form, and can also be realized in a form of hardware and a software functional unit.
The integrated module implemented in the form of a software functional module may be stored in a computer-readable storage medium. The software functional module is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a processor to execute some steps of the methods described in the embodiments of the present application.
It should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present invention may be embodied directly in a hardware processor, or in a combination of the hardware and software modules within the processor.
The memory may comprise a high-speed RAM memory, and may further comprise a non-volatile storage NVM, such as at least one disk memory, and may also be a usb disk, a removable hard disk, a read-only memory, a magnetic or optical disk, etc.
The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (Extended Industry Standard Architecture) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.
The storage medium may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the storage medium may reside as discrete components in an electronic device or host device.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
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