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Fault controlling method for continuous variable valve lift mechanism of engine

A valve lift, engine technology, applied in engine control, electrical control, combustion engine and other directions, can solve the problems of complex continuously variable valve mechanism, affecting the normal operation of the engine, etc.

Active Publication Date: 2012-05-23
SAIC MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It can be understood that due to the complexity of these continuously variable valve mechanisms, if there is a failure (such as a lock failure of the valve lift position adjustment mechanism), it will seriously affect the normal operation of the engine.

Method used

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  • Fault controlling method for continuous variable valve lift mechanism of engine
  • Fault controlling method for continuous variable valve lift mechanism of engine
  • Fault controlling method for continuous variable valve lift mechanism of engine

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Embodiment Construction

[0017] Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The same reference numerals are used to designate the same technical features in the figures. The following descriptions are illustrative and exemplary only. In addition, although the specific implementations of the present invention are described herein, it should be understood that some equivalent or similar variations and modifications of these specific implementations will also fall within the protection scope of the present invention.

[0018] image 3 A flow chart of continuous valve lift mechanism failure control is shown. The engine continuous valve variable lift mechanism of the failure control method of the engine continuous valve variable lift mechanism includes a valve lift position adjustment mechanism and a rotation angle sensor for judging the current actual valve lift.

[0019] It should be understood that the aforementioned val...

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Abstract

The invention provides a fault controlling method for continuous variable valve lift. Aiming at the possible fault states of a motor driven valve lift position adjusting mechanism and a corner sensor, the invention provides the feasible controlling method which can reduce the cost of a system and greatly improve the reliability of the system.

Description

technical field [0001] Generally speaking, the present invention relates to the field of engine continuous valve variable lift mechanism; specifically, the present invention relates to a fault control method of engine continuous valve variable lift mechanism. Background technique [0002] As we all know, under the part-load condition of the engine, the specific fuel consumption of the engine (that is, the fuel consumption per unit power output) increases as the load decreases. The gasoline engine needs to use the throttle valve to throttle the intake after the load is reduced, reducing the intake pressure and flow, resulting in engine pumping loss. If the continuous valve variable lift mechanism is used to control the engine valve lift to change with the change of demand conditions, and directly control the air volume entering the engine cylinder, the pumping loss can be reduced, the overall fuel consumption of the engine can be reduced, and the torque of the engine can be i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/22F02D9/08
CPCY02T10/40
Inventor 章健勇吕世亮张华
Owner SAIC MOTOR