KR970044693A - Oxygen sensor failure diagnosis device and method - Google Patents

Oxygen sensor failure diagnosis device and method Download PDF

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Publication number
KR970044693A
KR970044693A KR1019950058633A KR19950058633A KR970044693A KR 970044693 A KR970044693 A KR 970044693A KR 1019950058633 A KR1019950058633 A KR 1019950058633A KR 19950058633 A KR19950058633 A KR 19950058633A KR 970044693 A KR970044693 A KR 970044693A
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KR
South Korea
Prior art keywords
oxygen sensor
reference value
signal
engine speed
failure diagnosis
Prior art date
Application number
KR1019950058633A
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Korean (ko)
Inventor
정병용
Original Assignee
전성원
현대자동차 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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Application filed by 전성원, 현대자동차 주식회사 filed Critical 전성원
Priority to KR1019950058633A priority Critical patent/KR970044693A/en
Publication of KR970044693A publication Critical patent/KR970044693A/en

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Abstract

본 발명은 산소 센서 고장 진단 장치 및 그 방법에 관한 것으로서, 수온, 엔진 회전수(RPM), 엔진 부하(load)등의 공기-연료비(A/F) 피드백(feedback)조건에서 산소 센서 신호가 일정 지연 시간동안 변화없이 고정되어 있을 때, 산소 센서의 고장을 판정하는 장치 및 그 방법이다.The present invention relates to an oxygen sensor failure diagnosis apparatus and a method thereof, wherein the oxygen sensor signal is constant under air-fuel ratio (A / F) feedback conditions such as water temperature, engine speed (RPM), and engine load. An apparatus and method for determining a failure of an oxygen sensor when fixed without change for a delay time.

Description

산소센서 고장진단 장치 및 그 방법Oxygen sensor failure diagnosis device and method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제2도는 본 발명에 의한 산소 센서 고장 진단 방법의 동작 순서도이다.2 is an operation flowchart of the oxygen sensor failure diagnosis method according to the present invention.

Claims (2)

배기 가스 중의 산소농도를 감지하는 산소 센서, 상기 산소 센서로부터 신호를 받아 산소 센서의 활성화시 상기 산소 센서의 고장 여부를 진단하는 ECU, 상기 ECU로부터 신호를 받아 산소 센서 고장처리를 하는 액튜에이터를 포함하는 산소 센서 고장 진단 장치Oxygen sensor for detecting the oxygen concentration in the exhaust gas, ECU for receiving a signal from the oxygen sensor for diagnosing the failure of the oxygen sensor when the activation of the oxygen sensor, Actuator for receiving the signal from the ECU to perform oxygen sensor failure processing Oxygen sensor fault diagnosis device 산소 센서가 활성화되어 신호가 ECU에 전달되는 단계, 상기 산소 센서가 파워 서플라이 혹은 그라운드에 단선되었는지 여부를 판별하는 단계, 상기 산소 센서가 파워 서플라이 혹은 그라운드에 단선되지 않았을 경우 진행하는 수온이 기준 값보다 큰지를 판별하는 단계, 수온이 기준 값보다 클 때, 엔진 회전수가 기준 값보다 큰지를 판별하는 단계, 엔진 회전수가 기준 값보다 큰 경우, 엔진 부하가 기준 값보다 큰지를 판별하는 단계, 엔진 회전수가 기준 값보다 큰 경우, 일정 지연 시간 동안 산소 센서 신호가 기준 범위 안에 있는지를 판별하는 단계, 상시 산소 센서 신호가 기준 범위 안에 있는 경우, 산소 센서 고장을 결정하는 단계, 고장을 기억하고 처리하는 단계, 공기-연료비 조절을 중단하는 단계를 포함하는 산소 센서 고장 진단 방법When the oxygen sensor is activated and the signal is transmitted to the ECU, determining whether the oxygen sensor is disconnected from the power supply or the ground, and if the oxygen sensor is not disconnected from the power supply or the ground, the temperature of the water proceeds more than the reference value. Determining whether the engine speed is greater than the reference value, when the water temperature is greater than the reference value, if the engine speed is greater than the reference value, determining whether the engine load is greater than the reference value, engine speed Determining if the oxygen sensor signal is within the reference range if greater than the reference value, determining if the oxygen sensor signal is within the reference range if the oxygen sensor signal is within the reference range, remembering and handling the fault, Oxygen sensor failure diagnosis method comprising the step of stopping the air-fuel ratio adjustment
KR1019950058633A 1995-12-27 1995-12-27 Oxygen sensor failure diagnosis device and method KR970044693A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950058633A KR970044693A (en) 1995-12-27 1995-12-27 Oxygen sensor failure diagnosis device and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950058633A KR970044693A (en) 1995-12-27 1995-12-27 Oxygen sensor failure diagnosis device and method

Publications (1)

Publication Number Publication Date
KR970044693A true KR970044693A (en) 1997-07-26

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KR1019950058633A KR970044693A (en) 1995-12-27 1995-12-27 Oxygen sensor failure diagnosis device and method

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KR (1) KR970044693A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100412694B1 (en) * 2001-10-09 2003-12-31 현대자동차주식회사 Method of checking mis-combination of o2 sensor
KR100828797B1 (en) * 2006-12-08 2008-05-09 현대자동차주식회사 Checking method for disorder of lambda sensor built in diesel vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100412694B1 (en) * 2001-10-09 2003-12-31 현대자동차주식회사 Method of checking mis-combination of o2 sensor
KR100828797B1 (en) * 2006-12-08 2008-05-09 현대자동차주식회사 Checking method for disorder of lambda sensor built in diesel vehicle

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