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Method and device for controlling output torque of vehicle engine

A technology of engine output and control method, which is applied in the direction of transmission control, mechanical equipment, components with teeth, etc., can solve problems such as speeding, engine stalling, driving safety issues, etc., and achieve the effect of improving driving safety and avoiding stalling

Pending Publication Date: 2022-04-01
WEICHAI POWER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During the driving process of the vehicle, when the gear is switched, if the output torque of the engine is greater than the transferable torque of the clutch, it will cause the engine to stall in a short time, or even run away, causing traffic safety problems

Method used

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  • Method and device for controlling output torque of vehicle engine
  • Method and device for controlling output torque of vehicle engine
  • Method and device for controlling output torque of vehicle engine

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Embodiment Construction

[0022] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0023] In the vehicle power transmission, the output torque of the engine is transmitted to the wheel end through the clutch to meet the driving needs of the vehicle. The torque transmission capacity of the clutch is expressed by the transmittable torque, which is related to the degree of engagement of the clutch, that is to say, when the clutch is disengaged and en...

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Abstract

The embodiment of the invention discloses a control method and device for the output torque of a vehicle engine, and in the vehicle driving process, the target output torque of the vehicle engine is a torque value which needs to be output by the engine and is determined based on the current total power demand of the vehicle; by detecting the engagement position of the clutch, a transmittable torque indicative of the torque transmitting capability of the clutch may be determined. When the clutch is in the target change process, a first target torque is determined based on the target change process of the clutch and the transmittable torque of the clutch; and in the target change process, if the target output torque of the engine is larger than the first target torque, the target output torque of the engine is adjusted to be the first target torque. Therefore, in the process that the clutch is in the target change, the controller of the engine can control the actual output torque of the engine according to the first target torque, so that stall and even galloping of the engine in the process are avoided, and the driving safety of the vehicle is improved.

Description

technical field [0001] The present application relates to the technical field of vehicle control, in particular to a method and device for controlling output torque of a vehicle engine. Background technique [0002] In the power transmission of the vehicle, the output torque of the vehicle engine is transmitted to the wheel ends through clutches and other transmission devices to meet the driving needs of the vehicle. Among them, when the clutch is completely separated, the transmission torque between the main and driven discs of the clutch is zero, and the power transmission of the vehicle is disconnected; when the clutch is fully engaged, the transmission torque between the main and driven discs of the clutch is the largest, and the power transmission of the vehicle is the largest. It can be understood that the transferable torque of the clutch depends on the engagement degree of the clutch. [0003] During the driving process of the vehicle, when the gear is switched, if ...

Claims

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Application Information

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IPC IPC(8): F16H59/14F16H59/24
Inventor 桂经良贾艳艳毕继明
Owner WEICHAI POWER CO LTD
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