KR970062295A - Method for judging normal operation of exhaust gas recirculation control valve - Google Patents

Method for judging normal operation of exhaust gas recirculation control valve Download PDF

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Publication number
KR970062295A
KR970062295A KR1019960004869A KR19960004869A KR970062295A KR 970062295 A KR970062295 A KR 970062295A KR 1019960004869 A KR1019960004869 A KR 1019960004869A KR 19960004869 A KR19960004869 A KR 19960004869A KR 970062295 A KR970062295 A KR 970062295A
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KR
South Korea
Prior art keywords
control valve
normal operation
temperature signal
exhaust gas
egr
Prior art date
Application number
KR1019960004869A
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Korean (ko)
Inventor
김영환
Original Assignee
한승준
기아자동차 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 한승준, 기아자동차 주식회사 filed Critical 한승준
Priority to KR1019960004869A priority Critical patent/KR970062295A/en
Publication of KR970062295A publication Critical patent/KR970062295A/en

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  • Exhaust-Gas Circulating Devices (AREA)

Abstract

본 발명은 배기가스 재순환(EGR : Exhaust Gas Recirculation) 제어 밸브의 정상 작동 판단 방법에 관한 것으로, 특히 EGR 제어 밸브 후단의 가스 온도를 온도 센서를 이용하여 검출하여 이를 기준값과 비교하여 EGR 제어 밸브의 정상 작동 여부를 판단하는 EGR 제어 밸브의 정상 작동 판단 방법에 관한 것이다.The present invention relates to a method of determining normal operation of an exhaust gas recirculation (EGR) control valve. More particularly, the present invention relates to a method of determining normal operation of an exhaust gas recirculation (EGR) And determining whether the EGR control valve is operating.

본 발명에 따른 EGR 제어 밸브의 정상 동작 판단 방법은 차속 신호를 판단하여 감소 운행중인지를 판단하는 단계와, 감속 운행중인 경우 전자식 EGR 제어 밸브를 강제 작동시키는 단계와, 상기 EGR 제어 밸브 후단의 EGR 파이프내의 가스 온도를 온도 센서에 의해 검출하는 단계와, 상기 온도 신호값은 기준값과 비교하여 상기 온도신호값이 기준값과 동일하거나 큰 경우에는 정상인 것으로 판단하고, 그 반대인 경우는 고장인 것으로 판단하여, 상기 판단 결과를 EGR 제어 밸브의 고장 진단 데이터로서 기억시키는 단계로 구성되는 것을 특징으로 한다.A method for determining normal operation of an EGR control valve according to the present invention comprises the steps of: determining a vehicle speed signal to determine whether the vehicle is in a decelerating operation; energizing the electronic EGR control valve when the vehicle is decelerating; The temperature signal value is compared with a reference value, and when the temperature signal value is equal to or larger than the reference value, it is determined that the temperature signal is normal, and in the opposite case, the temperature signal value is determined to be a failure, And storing the result of the determination as the failure diagnostic data of the EGR control valve.

Description

배기가스 재순환 제어 밸브의 정상 작동 판단 방법Method for judging normal operation of exhaust gas recirculation control valve

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제1도는 본 발명에 따른 전자식 EGR 제어 밸브를 구비한 EGR 시스템의 개략 계통도이다.FIG. 1 is a schematic diagram of an EGR system with an electronic EGR control valve according to the present invention.

제2도는 본 발명에 따른 EGR 제어 밸브의 정상 작동 판단 방법을 나타낸 흐름도이다.FIG. 2 is a flowchart showing a normal operation determination method of an EGR control valve according to the present invention.

제3도 (a)는 주행중에 갑속할 경우의 EGR제어 밸브에 대한 제어값을 나타낸 타이밍도, 제 3도(b)는 EGR제어 밸브 후단의 EGR 파이프의 온도변화를 나타낸 그래프.FIG. 3 (a) is a timing chart showing a control value for the EGR control valve when the engine is running, and FIG. 3 (b) is a graph showing the temperature change of the EGR pipe at the rear stage of the EGR control valve.

Claims (1)

차속 신호를 판단하여 감속 운행중인지를 판단하는 단계와, 감속 운행중인 경우 전자식 EGR 제어 밸브를 강제 작동시키는 단계와, 상기 EGR 제어 밸브 후단의 EGR 파이프내의 가스 온도를 온도 센서에 의해 검출하는 단계와, 상기 온도신호값을 기준값과 비교하여 상기 온도신호값이 기준값과 동일하거나 큰 경우에는 정상인것으로 판단하고, 그 반대인 경우는 고장인 것으루 판단하여, 상기 판단 결과를 EGR 제어 밸브의 고장 진단데이터로서 기억시키는 단계로 구성되는 것을 특징으로 하는 EGR 제어 밸브의 정상 작동 판단 방법.Determining a vehicle speed signal to determine whether the vehicle is in decelerating operation; and forcibly operating the electronic EGR control valve when the vehicle is decelerating, detecting a gas temperature in the EGR pipe at a rear end of the EGR control valve by a temperature sensor, If the temperature signal value is equal to or greater than the reference value, it is determined that the temperature signal value is normal. On the other hand, if the temperature signal value is equal to or greater than the reference value, it is determined that the temperature signal value is malfunctioning. And storing the EGR control valve in the normal operating state. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960004869A 1996-02-27 1996-02-27 Method for judging normal operation of exhaust gas recirculation control valve KR970062295A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960004869A KR970062295A (en) 1996-02-27 1996-02-27 Method for judging normal operation of exhaust gas recirculation control valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960004869A KR970062295A (en) 1996-02-27 1996-02-27 Method for judging normal operation of exhaust gas recirculation control valve

Publications (1)

Publication Number Publication Date
KR970062295A true KR970062295A (en) 1997-09-12

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KR1019960004869A KR970062295A (en) 1996-02-27 1996-02-27 Method for judging normal operation of exhaust gas recirculation control valve

Country Status (1)

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KR (1) KR970062295A (en)

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