阅读说明：本技术 机油泵的控制方法、装置及系统 (Control method, device and system for engine oil pump ) 是由 林敬国 崔永 张俊龙 刘金磊 李雯 宗红霞 王超 于 2020-06-30 设计创作，主要内容包括：本发明实施例提供一种机油泵的控制方法、装置及系统,通过转速传感器获取发动机转速,通过油门控制器获取发动机负荷；所述发动机负荷是在所述发动机转速下的负荷；根据所述发动机转速和所述发动机负荷确定机油泵输出端所需的第一压力值；输出控制信号控制调压阀的状态,通过调压阀的状态控制机油泵输出端的压力为第一压力值,通过控制调压阀的状态调节机油泵的输出压力,减少了发动机功率的浪费,同时也避免了在较高输出压力下零部件磨损较大及寿命低的问题。(The embodiment of the invention provides a control method, a device and a system of an engine oil pump, wherein the engine speed is obtained through a speed sensor, and the engine load is obtained through an accelerator controller; the engine load is a load at the engine speed; determining a first pressure value required by an output end of an oil pump according to the engine speed and the engine load; the state of the pressure regulating valve is controlled by the output control signal, the pressure at the output end of the oil pump is controlled to be a first pressure value by controlling the state of the pressure regulating valve, and the output pressure of the oil pump is regulated by controlling the state of the pressure regulating valve, so that the waste of the power of an engine is reduced, and the problems of large abrasion of parts and short service life under high output pressure are solved.)

1. A control method of an oil pump is applied to an Electronic Control Unit (ECU), and is characterized by comprising the following steps:

the method comprises the steps that the rotating speed of an engine is obtained through a rotating speed sensor, and the load of the engine is obtained through an accelerator controller; the engine load is a load at the engine speed;

determining a first pressure value required by an output end of an oil pump according to the engine speed and the engine load;

and outputting a control signal to control the state of the pressure regulating valve, and controlling the pressure at the output end of the oil pump to be a first pressure value through the state of the pressure regulating valve.

2. The method of claim 1, wherein said obtaining an engine load via a throttle controller comprises:

receiving an accelerator control signal sent by the accelerator controller; the accelerator control signal represents the stepping position of an accelerator pedal by a driver;

and acquiring the load of the engine at the engine rotating speed according to the accelerator control signal.

3. The method of claim 1, wherein the pressure regulating valve comprises an electrically controlled pressure regulating valve or a proportional pressure regulating valve; one end of the pressure regulating valve is connected with the input end of the oil pump body in the oil pump and the oil tank, and the other end of the pressure regulating valve is connected with the output end of the oil pump body.

4. The method of claim 3, wherein outputting a control signal controls a state of a pressure regulating valve, comprising:

when the pressure regulating valve is an electric control pressure regulating valve, the output control signal is a switching value signal, and the switching value signal controls the opening or closing of a plurality of electric control pressure regulating valves;

when the pressure regulating valve is a proportional pressure regulating valve, the output control signal is an analog quantity signal, and the opening of the proportional pressure regulating valve is controlled through the analog quantity signal.

5. The method of claim 1, wherein after the pressure at the output of the oil pump of the controller is the first pressure value, the method further comprises:

acquiring a second pressure value of the output end of the oil pump through a pressure sensor arranged at the output end of the oil pump;

judging whether the second pressure value is consistent with the first pressure value or not;

and if the oil pump fault is inconsistent, generating prompt information of the oil pump fault.

6. The method of claim 5, wherein generating the notification of the oil pump failure further comprises:

and controlling a buzzer alarm to give an alarm to remind a worker to check according to the prompt message of the fault of the oil pump.

7. A control device of an oil pump, characterized by comprising:

the acquisition module is used for acquiring the rotating speed of the engine through a rotating speed sensor and acquiring the load of the engine through an accelerator controller; the engine load is a load at the engine speed;

the determining module is used for determining a first pressure value required by the output end of the oil pump according to the engine speed and the engine load;

and the control module is used for controlling the state of the pressure regulating valve based on the output control signal, and controlling the pressure at the output end of the oil pump to be a first pressure value through the state of the pressure regulating valve.

8. A control system of an engine oil pump is characterized by comprising an ECU, a rotating speed sensor, an accelerator controller and a pressure regulating valve;

the ECU is respectively connected with the accelerator controller, the rotating speed sensor and the pressure regulating valve; the rotating speed sensor is used for detecting the rotating speed of the engine and sending the rotating speed to an ECU (electronic control unit); the throttle controller is used for acquiring a throttle control signal and sending the throttle control signal to the ECU; and the ECU is used for acquiring the engine load at the engine speed according to the received accelerator control signal and controlling the state of the pressure regulating valve according to the engine speed and the engine load.

9. A control apparatus of an oil pump, characterized by comprising: at least one processor and memory;

the memory stores computer-executable instructions;

execution of computer-executable instructions stored by the memory by the at least one processor causes the at least one processor to perform the method of controlling an oil pump of any of claims 1-6.

10. A computer-readable storage medium having computer-executable instructions stored thereon which, when executed by a processor, implement the method of controlling an oil pump of any of claims 1-6.

Technical Field

The embodiment of the invention relates to the technical field of oil pumps, in particular to a method, a device and a system for controlling an oil pump.

Background

The oil pump is an indispensable part in the engine, and has the function of providing power for the oil in the engine, so that the oil is forced to reach various lubrication parts of the engine from the oil pan, and the normal operation of the engine is ensured.

The engine oil pump of the engine consists of an oil pump body and a mechanical safety valve, and when the engine works, the engine oil pump works under the driving of the power gear. When the engine speed is higher, the outlet pressure of the oil pump is increased, and when the outlet pressure of the oil pump exceeds the pressure of the safety valve, the safety valve is opened to remove part of the oil, so that the outlet pressure of the oil pump is maintained at a constant value. In the prior art, the outlet pressure of the oil pump is in direct proportion to the rotating speed of the oil pump, and actually, the outlet pressure actually required by the oil pump is not in direct proportion to the rotating speed of the engine, namely, when the rotating speed of the engine is higher, the outlet pressure required by the oil pump may not need to be very high.

Therefore, in the prior art, the problem that the engine oil pump outputs higher pressure when the engine oil pump does not need higher output pressure, so that consumed power is larger and engine power is wasted exists.

Disclosure of Invention

The embodiment of the invention provides a control method, a device and a system of an oil pump, which are used for adjusting the output pressure of the oil pump, reducing the consumed power and reducing the power waste.

In a first aspect, an embodiment of the present application provides a control method for an oil pump, which is applied to an electronic control unit ECU, and includes:

the method comprises the steps that the rotating speed of an engine is obtained through a rotating speed sensor, and the load of the engine is obtained through an accelerator controller; the engine load is a load at the engine speed;

determining a first pressure value required by an output end of an oil pump according to the engine speed and the engine load;

and outputting a control signal to control the state of the pressure regulating valve, and controlling the pressure at the output end of the oil pump to be a first pressure value through the state of the pressure regulating valve.

Optionally, the obtaining the engine load through the throttle controller includes:

receiving an accelerator control signal sent by the accelerator controller; the accelerator control signal represents the stepping position of an accelerator pedal by a driver;

and acquiring the load of the engine at the engine rotating speed according to the accelerator control signal.

Optionally, the pressure regulating valve comprises an electrically controlled pressure regulating valve or a proportional pressure regulating valve; one end of the pressure regulating valve is connected with the input end of the oil pump body in the oil pump and the oil tank, and the other end of the pressure regulating valve is connected with the output end of the oil pump body.

Optionally, the outputting the control signal controls a state of the pressure regulating valve, including:

when the pressure regulating valve is an electric control pressure regulating valve, the output control signal is a switching value signal, and the switching value signal controls the opening or closing of a plurality of electric control pressure regulating valves;

when the pressure regulating valve is a proportional pressure regulating valve, the output control signal is an analog quantity signal, and the opening of the proportional pressure regulating valve is controlled through the analog quantity signal.

Optionally, after the pressure at the output end of the oil pump is controlled to be the first pressure value, the method further includes:

acquiring a second pressure value of the output end of the oil pump through a pressure sensor arranged at the output end of the oil pump;

judging whether the second pressure value is consistent with the first pressure value or not;

and if the oil pump fault is inconsistent, generating prompt information of the oil pump fault.

Optionally, after the generating of the prompt information of the oil pump fault, the method further includes:

and controlling a buzzer alarm to give an alarm to remind a worker to check according to the prompt message of the fault of the oil pump.

In a second aspect, the present application also provides a control device of an oil pump, including:

the acquisition module is used for acquiring the rotating speed of the engine through a rotating speed sensor and acquiring the load of the engine through an accelerator controller; the engine load is a load at the engine speed;

the determining module is used for determining a first pressure value required by the output end of the oil pump according to the engine speed and the engine load;

and the control module is used for controlling the state of the pressure regulating valve based on the output control signal, and controlling the pressure at the output end of the oil pump to be a first pressure value through the state of the pressure regulating valve.

In a third aspect, the present application further provides a control system of an engine oil pump, comprising an ECU, a rotation speed sensor, a throttle controller and a pressure regulating valve;

the ECU is respectively connected with the accelerator controller, the rotating speed sensor and the pressure regulating valve; the rotating speed sensor is used for detecting the rotating speed of the engine and sending the rotating speed to an ECU (electronic control unit); the throttle controller is used for acquiring a throttle control signal and sending the throttle control signal to the ECU; and the ECU is used for acquiring the engine load at the engine speed according to the received accelerator control signal and controlling the state of the pressure regulating valve according to the engine speed and the engine load.

In a fourth aspect, the present application also provides a control apparatus of an oil pump, including: at least one processor and memory;

the memory stores computer-executable instructions;

the at least one processor executes computer-executable instructions stored by the memory to cause the at least one processor to perform a method of controlling an oil pump as provided in any embodiment of the present application.

In a fifth aspect, the present application further provides a computer-readable storage medium, in which computer-executable instructions are stored, and when executed by a processor, the computer-readable storage medium implements a method for controlling an oil pump according to any embodiment of the present application.

The method comprises the steps of firstly acquiring the rotating speed of an engine through a rotating speed sensor, acquiring the load of the engine under the rotating speed of the engine through an accelerator controller, then determining a first pressure value required by the output end of an oil pump according to the rotating speed of the engine and the load of the engine, finally outputting a control signal to control the state of a pressure regulating valve, and controlling the pressure at the output end of the oil pump to be the first pressure value through the state of the pressure regulating valve. According to the embodiment of the invention, the state of the pressure regulating valve can be dynamically regulated according to the rotating speed and the load of the engine, so that the pressure value of the output end of the engine oil pump is regulated, and the pressure value of the output end of the engine oil pump can be reduced when the engine oil pump does not need high pressure, thereby reducing the consumed power, reducing the power waste, avoiding the problems of large abrasion of parts and low service life under high output pressure, and improving the oil change period of the engine oil.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of a conventional oil pump according to an embodiment of the present invention;

FIG. 2 is a flow chart illustrating a method for controlling an oil pump according to an embodiment of the present invention;

FIG. 3 is a flowchart of a method for controlling an oil pump according to a second embodiment of the present invention;

fig. 4 is a schematic structural diagram of a control device of an oil pump according to a third embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a control system of an oil pump according to a fourth embodiment of the present invention;

fig. 6 is a schematic hardware structure diagram of a control device of an oil pump according to a fifth embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.