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Anti-shock Control Method for Gasoline Engine Power Transmission System

A technology of power transmission system and control method, applied in the direction of automatic control, automatic control, engine control, etc., can solve the problems of torsional vibration, increase of torsional amplitude and resonance of power system, and achieve the effect of avoiding torsional vibration and resonance.

Active Publication Date: 2021-10-29
DONGFENG MOTOR CORP HUBEI
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

When the vehicle is running, the transmission system will form an impact force due to the sudden change of the output torque of the flywheel end, which may cause torsional vibration in the power system, or even resonance phenomenon. When the power system resonates, it will amplify the excitation and twist The amplitude of the vibration increases, resulting in fatigue damage to the components of the transmission system, affecting the reliability and life of the vehicle

Method used

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  • Anti-shock Control Method for Gasoline Engine Power Transmission System
  • Anti-shock Control Method for Gasoline Engine Power Transmission System
  • Anti-shock Control Method for Gasoline Engine Power Transmission System

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Embodiment Construction

[0064] The present invention will be further described in detail below in conjunction with the accompanying drawings to facilitate a clearer understanding of the present invention, but they do not limit the present invention.

[0065] Such as figure 1 As shown, a gasoline engine power transmission system anti-shock control method,

[0066] First determine the conditions for the activation of the anti-shock control, and activate the anti-shock control when the following six conditions are met at the same time. This is mainly to eliminate the instability of the transmission system that may be caused by the combustion of the engine itself, or this working condition will not affect the impact on the transmission system, so as to avoid misadjustment of the torque vibration of the transmission system.

[0067] 1) No external longitudinal torque request, such as ABS, EPB, ESC, ESP, ESC, APA, ADAS;

[0068] 2) The engine is running and exceeds the set time;

[0069] 3) The water te...

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Abstract

The invention discloses a gasoline engine power transmission system anti-shock control method, which is characterized in that it comprises the following steps: 1) obtaining the actual engine speed and the target engine speed to obtain the engine speed difference; 3) Obtain the initial value of the anti-shock torque according to the filtered value of the anti-shock torque; 4) Compare the initial value of the anti-shock torque with the threshold value of the anti-shock torque to determine the fire path compensation torque , Air path compensation torque and oil supply status. The invention determines the compensation torque of the fire path, the compensation torque of the gas path and the fuel supply state according to different gears and operating parameters, and compensates the output torque of the fire path and the gas path of the engine, avoiding torsional vibration and resonance in the power system and transmission system.

Description

technical field [0001] The invention relates to the technical field of power system control, in particular to an anti-shock control method for a gasoline engine power transmission system. Background technique [0002] The engine generates power after combustion, and the power is transmitted to the driving wheels through the transmission system, and these parts of the transmission system with inertia and elasticity form a torque vibration system. When the vehicle is running, the transmission system will form an impact force due to the sudden change of the output torque of the flywheel end, which may cause torsional vibration in the power system, or even resonance phenomenon. When the power system resonates, it will amplify the excitation and twist The amplitude of the vibration increases, resulting in fatigue damage to the components of the transmission system, which affects the reliability and life of the vehicle. Contents of the invention [0003] The purpose of the pres...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D37/02F02D41/00F02D41/12F02P5/15
CPCF02D37/02F02D41/0002F02D41/0097F02D41/123F02D2200/101F02D2250/18F02P5/1502
Inventor 秦龙刘磊陈龙翟刚
Owner DONGFENG MOTOR CORP HUBEI
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