Self-adaptive EGR valve control system

An EGR valve and valve control technology, which can be used in charging systems, adding non-fuel substances to fuel, internal combustion piston engines, etc.
CN101818705AInactive Publication Date: 2010-09-01哈尔滨安龙迪环保科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
哈尔滨安龙迪环保科技有限公司
Publication Date
2010-09-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a self-adaptive EGR valve control system, and relates to an exhaust gas recirculation (EGR) valve control system, which comprises a DC driving motor, a position feedback module, a diagnostic module and an adjustment control module. The DC driving motor is controlled by the position feedback module to realize positive and reverse rotation and positioning so as to control the lift of the EGR valve to adjust the size of the EGR rate. The position feedback module monitors the lift of the EGR valve so as to accurately adjust the size of the EGR rate. The diagnostic module is used for determining whether the EGR valve can work normally so as to serve as the basis for the adjustment control and the premise for the self-adaptability. The adjustment control module integrates the control software and the control strategy of the control system so as to diagnose the system error and adjust the size of the EGR rate.
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Description

technical field

[0001] The present invention relates to exhaust gas recirculation (EGR) systems for internal combustion engines, and more particularly, to an EGR system for accommodating the effects of valve body wear, particulate soot accumulation, and without causing failure of the control algorithm Control systems and methods. Background technique

[0002] Internal combustion engines combust a gaseous fuel mixture within each cylinder to drive pistons to reciprocate. The pistons rotatably drive the crankshaft to provide drive torque to the drive train. Exhaust gases from the combustion process exit the engine through the exhaust manifold and are treated by the exhaust system.

[0003] Engine systems often include an exhaust gas recirculation or exhaust gas recirculation (EGR) system to reduce engine emissions. The EGR system recirculates exhaust gases back into the individual cylinders to hopefully limit the amount of oxygen used for combustion. Limiting the amount of...

Claims

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