Control method and device for torque of engine

An engine torque and engine controller technology, applied in the field of engine torque control methods and devices, can solve problems such as low engine torque control accuracy, and achieve the effects of reducing gaps and improving control accuracy

Active Publication Date: 2019-02-19
WEICHAI POWER CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in practical applications, compared with the motor, the actual output torque of the engine differs greatly from the allocated required torque, resulting in low engine torque control accuracy

Method used

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  • Control method and device for torque of engine
  • Control method and device for torque of engine
  • Control method and device for torque of engine

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Embodiment Construction

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0047] An embodiment of the present invention provides an engine torque control method, which is applied to a hybrid controller of a single-shaft parallel hybrid system, and the flow chart of the method is as follows figure 2 shown, including the following steps:

[0048] S10, when the single-shaft parallel hybrid power system is in the drive mode, determine the required torque of the engine.

[0049] In the process of executing step S10, the hybrid controll...

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Abstract

The invention provides a control method and device for torque of an engine. The method is applied to a hybrid power controller of a single-shaft parallel-type hybrid power system. The method comprisesthe steps of determining demand torque of the engine on the condition that the single-shaft parallel-type hybrid power system is in a driving mode; obtaining the current rotation speed of the engine,and determining target correction torque corresponding to the current rotation speed according to predetermined correction torque of the engine under different rotation speeds; correcting the demandtorque according to the target correction torque, and sending the corrected demand torque to an engine controller, so that the engine controller controls the engine to output torque according to the corrected demand torque. Through correction, the difference between the actual output torque of the engine and the distributed demand torque can be reduced, and the precision of controlling the torqueof the engine is improved.

Description

technical field [0001] The present invention relates to the technical field of hybrid power, more specifically, to an engine torque control method and device. Background technique [0002] figure 1 A schematic diagram of the structure of a single-shaft parallel hybrid system is shown. The single-shaft parallel hybrid system includes an engine 1, a clutch 2, a motor 3, a battery 4 and a gearbox 5, and the engine 1 and the motor 3 are coaxially connected. [0003] At this stage, the single-shaft parallel hybrid system determines the total required torque by the hybrid controller combined with the vehicle operating conditions, and distributes the respective required torques to the engine and the motor according to the working status of the motor controller, engine controller and battery controller . [0004] However, in practical applications, compared with the motor, the actual output torque of the engine differs greatly from the allocated required torque, resulting in low e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/10B60W10/06B60W10/08
CPCB60W10/06B60W10/08B60W20/10B60W2510/0638B60W2510/081B60W2710/0666Y02T10/62
Inventor 孙晓鹏任宪丰王震华刘中秀卢朋珍
Owner WEICHAI POWER CO LTD
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