Engine torque control method and device, automobile, control equipment and medium

An engine torque and control method technology, applied in engine control, mechanical equipment, machine/engine, etc., can solve problems such as mismatch of torque increase, engine torque and transmission system speed ratio error, etc., to reduce engine torque demand, The effect of reducing the impulse on the speed and improving the fuel consumption

Pending Publication Date: 2022-07-08
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides an engine torque control method, device, vehicle, control equipment and medium to solve the problem of the difference between the engine torque response time and the transmission hydraulic pressure response time under different working conditions, as well as the engine torque and transmission system speed ratio. There is an error, if the actual speed ratio signal (transmission system speed ratio) sent by the transmission controller is used as the calculation factor of the engine demand torque, it will cause the problem that the increase in the actual torque of the engine does not match the increase in torque demanded by the transmission

Method used

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  • Engine torque control method and device, automobile, control equipment and medium
  • Engine torque control method and device, automobile, control equipment and medium
  • Engine torque control method and device, automobile, control equipment and medium

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Embodiment Construction

[0059] An embodiment of the present invention provides a method for calculating the required torque of an automobile engine, such as figure 1 shown, including the following 5 main steps:

[0060] S1: Judgment of the enabling condition of the shift control function.

[0061] The transmission controller sends the actual gear signal, the actual gear valid signal, the target gear signal, the target gear valid signal, the shift process flag signal, and the shift process flag valid signal to the engine controller, and the body controller sends the vehicle speed signal, The vehicle speed valid signal is sent to the engine controller. If the engine controller determines that the actual gear position valid signal, the target gear position valid signal, the gear shift process flag valid signal and the vehicle speed valid signal are all valid, the engine controller will set the shift control function enable flag position, and the shift control function Enable; if any of the above valid...

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PUM

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Abstract

The invention provides an engine torque control method which comprises the following steps: when a gear shifting control function enabling mark position is determined, determining a required torque of a wheel end of an engine; based on a preset virtual speed ratio, calculating a result whether an enabling flag bit is set or not and a result whether an actual gear signal of the transmission is effective or not, and determining a terminal speed ratio; and determining the engine demand torque based on the determined ratio of the engine wheel end demand torque to the terminal speed ratio.

Description

technical field [0001] The invention relates to the field of engine control, in particular to an engine torque control method, a device, an automobile, a control device and a medium. Background technique [0002] In order to improve the drivability of the whole vehicle, the corresponding throttle torque map can be made through different gears, and the throttle torque map corresponds to the torque at the engine end (CN109630286A-Method for improving the drivability of the whole vehicle). As driving comfort requirements further increase, the throttle torque map can be mapped to wheel-end torque. The engine controller looks up the table to obtain the wheel-end torque according to the real-time vehicle speed and the position of the accelerator pedal, and then divides the wheel-end torque by the transmission speed ratio to obtain the engine demand torque. [0003] The transmission system speed ratio is usually issued by the transmission controller, and can also be obtained by th...

Claims

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Application Information

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IPC IPC(8): F02D41/02F02D29/02
CPCF02D41/023F02D29/02F02D2200/1002F02D2200/50
Inventor 杨方子
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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