A Soft Seating Control Method for Electronically Controlled Throttle Valve

A control method and throttle valve technology, applied in electrical control, engine control, fuel injection control, etc., can solve problems affecting the service life of actuators, impact deformation of components, etc., and achieve the effect of avoiding mechanical impact and protecting mechanical structures
CN109854396BActive Publication Date: 2022-03-25FAW JIEFANG AUTOMOTIVE CO
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
FAW JIEFANG AUTOMOTIVE CO
Publication Date
2022-03-25

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Abstract

The invention discloses a soft seat control method for an electronically controlled throttle valve, which belongs to the field of automotive electronic control. It is aimed at the drive control of the existing hardware H bridge. The operating condition is close to the transition from fully closed to fully open. If there is no soft seat control at this time, the throttle valve actuator will cause impact deformation of related components due to excessive impulse, which will seriously affect the service life of the actuator. In the present invention, by judging the restricting mode of the throttle valve setting position, reasonably selecting the duty cycle threshold value, performing restrictive processing on the rough throttle valve setting position original signal, and using the restrictive setting position as the throttle valve position control The ultimate goal is to effectively avoid the mechanical impact of the throttle valve and other problems, and achieve the purpose of protecting the mechanical structure of the throttle valve.
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Description

technical field

[0001] The invention belongs to the field of automobile electronic control. Background technique

[0002] As the diesel engine emission standard moves towards the National VI stage, while the steady-state emissions are greatly reduced, the new emission regulations have also made more stringent requirements for the emission of dynamic conditions. It is necessary to maintain a suitable exhaust temperature without exception, otherwise it will seriously affect the efficiency of after-treatment. As the key actuator to control the air-fuel ratio and improve the exhaust temperature, the electronically controlled throttle valve has been widely used here.

[0003] In order to control the cost of the actuator, the widely used throttle valve is driven by a brushed or brushless motor, and the drive control is performed by means of a hardware H-bridge. In the process of driving, it is inevitable that the throttle valve will transition from close to fully closed to fully...

Claims

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