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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.

Inactive Publication Date: 2010-09-01
哈尔滨安龙迪环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, because a large number of EGR valves are driven by stepping motors, there is no such a control system, so the EGR valves currently used in the market will not be able to provide a reasonable EGR rate after a certain period of time, resulting in engine efficiency and / or Or the reduction of performance, not only affects the economic interests of consumers, but also brings more negative impacts on the environment

Method used

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Examples

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Embodiment Construction

[0013] The following description of preferred embodiments is merely exemplary in nature and is in no way intended to limit the invention, its use or uses. For the sake of clarity, the same reference numbers have been used in the drawings to refer to similar elements. As used herein, the term "module" refers to an application specific integrated circuit (ASIC), circuit, processor (shared, dedicated or grouped) and memory capable of executing one or more software or operating system programs, Combinational logic circuits and / or other suitable components provide the required functionality.

[0014] now refer to figure 1 , an exemplary engine system 1 is described. The engine system 1 includes an engine 2 , an intake manifold 3 and an exhaust manifold 4 . Air passes through the intake passage 5 , flows through the EGR valve 6 and into the intake manifold 3 which distributes the air to the individual cylinders. When the air flows through the intake duct 5, it passes through the...

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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.

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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Application Information

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IPC IPC(8): F02M25/07F02M26/48F02M26/49F02M26/54
CPCY02T10/121Y02T10/12
Inventor 李军于秀敏李明喜
Owner 哈尔滨安龙迪环保科技有限公司
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