CN-119532040-B - Variable valve timing control system, control method, control device and equipment thereof

CN119532040BCN 119532040 BCN119532040 BCN 119532040BCN-119532040-B

Abstract

The application relates to a variable valve timing control system, a control method, a control device and control equipment thereof, and relates to the technical field of engine testing. The system comprises an engine electronic control unit, a data conversion module and a motor driving module, wherein the engine electronic control unit is used for receiving a crank shaft position sensor signal of an engine and a cam shaft position sensor signal of the engine, determining the actual valve timing of the cam shaft, generating an engine oil control valve control signal based on the actual valve timing and a preset target valve timing, controlling the engine oil control valve to adjust the actual valve timing to the preset target valve timing, and the data conversion module is connected with the engine electronic control unit and used for receiving the crank shaft position sensor signal, the cam shaft position sensor signal, a motor feedback signal of the engine and the engine oil control valve control signal in real time, generating a motor driving signal and transmitting the motor driving signal to a motor. The system can reduce the testing complexity.

Inventors

GUO YURONG
LIN ZHENG
CHEN ZHE
YANG YUXIN
Shi Ruoman

Assignees

东风本田发动机有限公司

Dates

Publication Date: 20260505
Application Date: 20241126

Claims (10)

1. A variable valve timing control system, characterized by comprising: The engine electronic control unit is used for receiving a crank shaft position sensor signal of an engine and a cam shaft position sensor signal of the engine, determining the actual valve timing of a cam shaft, generating an engine oil control valve control signal based on the actual valve timing and a preset target valve timing, sending the engine oil control valve control signal to an engine oil control valve when the variable valve timing to be controlled is hydraulic, controlling the engine oil control valve to adjust the actual valve timing to the preset target valve timing, and sending the engine oil control valve control signal to a data conversion module when the variable valve timing to be controlled is electric; The data conversion module is connected with the engine electronic control unit and is used for receiving the crank shaft position sensor signal, the cam shaft position sensor signal, the motor feedback signal of the engine and the engine oil control valve control signal in real time under the condition that the variable valve timing to be controlled is electric, generating a motor driving signal and transmitting the motor driving signal to the motor, and the motor driving signal is used for controlling the motor to adjust the rotating speed to a target rotating speed corresponding to the preset target valve timing.
2. The variable valve timing control system according to claim 1, characterized in that the system further comprises: The sensor module is respectively connected with the engine electronic control unit and the data conversion module, and is used for collecting the crank shaft position sensor signal and the cam shaft position sensor signal in real time and respectively transmitting the crank shaft position sensor signal and the cam shaft position sensor signal to the engine electronic control unit and the data conversion module.
3. The variable valve timing control system according to claim 1, characterized in that the system further comprises: the motor is connected with the data conversion module, and is used for sending the motor feedback signal to the data conversion module in real time and responding to the motor driving signal to adjust the rotating speed to the target rotating speed.
4. The variable valve timing control system according to any one of claims 1 to 3, wherein the motor feedback signal includes one or more of a motor speed feedback signal, a motor steering feedback signal, and a condition monitoring feedback signal.
5. The variable valve timing control system according to claim 1, characterized in that the system further comprises: And the engine oil control valve is connected with the engine electronic control unit and is used for responding to the engine oil control valve control signal and adjusting the engine oil flow and the engine oil flow direction to target engine oil flow and target engine oil flow direction corresponding to the preset target valve timing.
6. A variable valve timing control method, characterized by being applied to a data conversion module of the variable valve timing control system according to any one of claims 1 to 5, comprising: Receiving a crank shaft position sensor signal, a cam shaft position sensor signal, a motor feedback signal of an engine and an engine oil control valve control signal sent by an engine electronic control unit corresponding to a hydraulic optional valve timing control system in real time under the condition that the variable valve timing to be controlled is electric; And generating a motor drive signal according to the crankshaft position sensor signal, the camshaft position sensor signal, a motor feedback signal of the engine and the engine oil control valve control signal, and sending the motor drive signal to a motor of the engine.
7. The variable valve timing control method according to claim 6, wherein the motor feedback signal includes one or more of a motor rotation speed feedback signal, a motor steering feedback signal, and a state monitoring feedback signal, the generating a motor drive signal based on the crank position sensor signal, the camshaft position sensor signal, the motor feedback signal of the engine, and the engine oil control valve control signal includes: Determining the working state of the motor according to the state monitoring feedback signal; And under the condition that the working state of the motor is normal, generating a motor driving signal according to the crank shaft position sensor signal, the cam shaft position sensor signal, the motor rotating speed feedback signal, the motor steering feedback signal and the engine oil control valve control signal.
8. The variable valve timing control method according to claim 7, characterized in that said generating a motor drive signal from said crank position sensor signal, said camshaft position sensor signal, said motor rotation speed feedback signal, said motor steering feedback signal, and said engine oil control valve control signal includes: Determining a control strategy according to the engine oil control valve control signal; Determining a target wheel speed of the motor according to the control strategy, the crankshaft position sensor signal, the camshaft position sensor signal, the motor rotation speed feedback signal and the motor steering feedback signal; And generating a motor driving signal according to the control strategy and the target wheel speed, wherein the motor driving signal is used for adjusting the actual wheel speed of the motor to the target wheel speed so as to adjust the actual valve timing to a preset target valve timing forwards, keeps or backwards.
9. A variable valve timing control apparatus, characterized by being applied to a data conversion module of the variable valve timing control system according to any one of claims 1 to 5, comprising: the signal receiving module is used for receiving a crank shaft position sensor signal, a cam shaft position sensor signal, a motor feedback signal of an engine and an engine oil control valve control signal in real time; And the motor driving module is used for generating a motor driving signal according to the crank shaft position sensor signal, the cam shaft position sensor signal, a motor feedback signal of the engine and the engine oil control valve control signal and sending the motor driving signal to a motor of the engine.
10. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any of claims 6 to 8 when the computer program is executed.

Description

Variable valve timing control system, control method, control device and equipment thereof Technical Field The present application relates to the field of engine testing technologies, and in particular, to a variable valve timing control system, a control method, a control device, and an apparatus thereof. Background In the bench test and calibration of the engine, the timing of the engine camshaft is generally changed by a VVT (Variable VALVE TIMING) control technique, so as to control the valve overlap angle. There are two control modes of hydraulic VVT and electric VVT. The hydraulic VVT control technique performs phase adjustment by controlling the flow rate of oil on both sides of a rotor connected to a cam so as to be relatively rotated with respect to a stator connected to a timing sprocket. The electric VVT control technology is a motor-driven VVT system, and the rotation speed of a motor relative to a cam shaft is controlled by the cam shaft, so that a phase difference is generated between a rotor and a stator, and the front adjustment and the back adjustment of the variable valve timing are realized and kept stable. However, the current hydraulic VVT control technology and the electric VVT control technology require placing a dedicated ECU for signal acquisition and control signal output, and when the engine adopts a new mechanism to perform a test, the dedicated ECU needs to be purchased again. Therefore, the current variable valve timing control method has the problem of high test complexity. Disclosure of Invention In view of the above, it is desirable to provide a variable valve timing control system, a control method, a control device, and an apparatus thereof, which can reduce costs. A variable valve timing control system, comprising: The engine electronic control unit is used for receiving a crank shaft position sensor signal of an engine and a cam shaft position sensor signal of the engine, determining the actual valve timing of the cam shaft, and generating an engine oil control valve control signal based on the actual valve timing and a preset target valve timing, wherein the engine oil control valve control signal is used for controlling an engine oil control valve to adjust the actual valve timing to the preset target valve timing; The data conversion module is connected with the engine electronic control unit and used for receiving the crank shaft position sensor signal, the cam shaft position sensor signal, the motor feedback signal of the engine and the engine oil control valve control signal in real time, generating a motor driving signal and transmitting the motor driving signal to the motor, and the motor driving signal is used for controlling the motor to adjust the rotating speed to a target rotating speed corresponding to the preset target valve timing. In one embodiment, the system further comprises: The sensor module is respectively connected with the engine electronic control unit and the data conversion module, and is used for collecting the crank shaft position sensor signal and the cam shaft position sensor signal in real time and respectively transmitting the crank shaft position sensor signal and the cam shaft position sensor signal to the engine electronic control unit and the data conversion module. In one embodiment, the system further comprises: the motor is connected with the data conversion module, and is used for sending the motor feedback signal to the data conversion module in real time and responding to the motor driving signal to adjust the rotating speed to the target rotating speed. In one embodiment, the motor feedback signal includes one or more of a motor speed feedback signal, a motor steering feedback signal, and a condition monitoring feedback signal. In one embodiment, the system further comprises: And the engine oil control valve is connected with the engine electronic control unit and is used for responding to the engine oil control valve control signal and adjusting the engine oil flow and the engine oil flow direction to target engine oil flow and target engine oil flow direction corresponding to the preset target valve timing. A variable valve timing control method applied to a data conversion module of a variable valve timing control system described in the above embodiment includes: receiving a crank shaft position sensor signal, a cam shaft position sensor signal, a motor feedback signal of an engine and an engine oil control valve control signal in real time; And generating a motor drive signal according to the crankshaft position sensor signal, the camshaft position sensor signal, a motor feedback signal of the engine and the engine oil control valve control signal, and sending the motor drive signal to a motor of the engine. In one embodiment, the motor feedback signal includes one or more of a motor speed feedback signal, a motor steering feedback signal, and a condition monitoring feedback signal, the generating a motor drive signal bas