KR970048048A - Inspection method of exhaust gas recirculation device - Google Patents

Inspection method of exhaust gas recirculation device Download PDF

Info

Publication number
KR970048048A
KR970048048A KR1019950049605A KR19950049605A KR970048048A KR 970048048 A KR970048048 A KR 970048048A KR 1019950049605 A KR1019950049605 A KR 1019950049605A KR 19950049605 A KR19950049605 A KR 19950049605A KR 970048048 A KR970048048 A KR 970048048A
Authority
KR
South Korea
Prior art keywords
egr
determined
load
turned
exhaust gas
Prior art date
Application number
KR1019950049605A
Other languages
Korean (ko)
Other versions
KR0168815B1 (en
Inventor
정훈
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.)
Filing date
Publication date
Application filed by 한승준, 기아자동차 주식회사 filed Critical 한승준
Priority to KR1019950049605A priority Critical patent/KR0168815B1/en
Publication of KR970048048A publication Critical patent/KR970048048A/en
Application granted granted Critical
Publication of KR0168815B1 publication Critical patent/KR0168815B1/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00—Testing of engines
    • G01M15/04—Testing internal-combustion engines
    • G01M15/10—Testing internal-combustion engines by monitoring exhaust gases or combustion flame
    • G01M15/102—Testing internal-combustion engines by monitoring exhaust gases or combustion flame by monitoring exhaust gases
    • G01M15/106—Testing internal-combustion engines by monitoring exhaust gases or combustion flame by monitoring exhaust gases using pressure sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/0047—Controlling exhaust gas recirculation [EGR]
    • F02D41/0077—Control of the EGR valve or actuator, e.g. duty cycle, closed loop control of position

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

본 발명은 자동차 배기 가스 재순환 장치(EXHAUST GAS RECIRCULATI0N; 이하 EGR이라 한다.)에 관한 것으로, 특히, EGR의 동작상태를 검사하는 검사기능의 수행여부를 지속적으로 검출하는 검사기능수행여부 판단단계(100)와; 상기 검사기능수행여부 판단단계(100)를 수행한 결과, 검사기능을 수행하라는 소정의 제어신호가 인가됨에 따라 자동차가 정상주행을 하고 있는지의 여부를 지속적으로 검출하는 정상주행여부 판단단계(200)와; 상기 정상주행여부 판단단계(200)를 수행한 결과, 자동차가 정상주행을 하고 있는 것으로 판단됨에 따라, 에어콘(AIR CONDITIONER), 파워 스티어링(POWER STEERING), 송풍기(BLOWER), 냉장고 등의 부하의 작동에 변화가 있는지의 여부를 지속적으로 검출하는 부하변동여부 판단단계(300)와; 상기 부하변동여부 판단단계(300)를 수행한 결과, 부하의 작동에 변화가 없는 것으로 판단됨에 따라, 변환밸브(3)를 작동시켜 대기측 통로를 차단한 후, EGR 밸브(2)를 온/오프시켜 EGR 밸브의 하류압력을 측정함으로써 EGR의 정상동작여부를 판단하여, 정상적으로 동작하지 않을 경우에는 소정의 방법을 통해 이를 나타내는 검사기능 수행단계(400)를 포함하여 구성됨을 특징으로 하는 배기가스 재순환 장치의 검사방법이다.The present invention relates to a vehicle exhaust gas recirculation apparatus (EXHAUST GAS RECIRCULATI0N; hereinafter referred to as EGR), in particular, the inspection function performing determination step for continuously detecting whether or not to perform the inspection function for checking the operating state of the EGR (100) )Wow; As a result of performing the check function performing determination step 100, as a result of applying a predetermined control signal to perform the check function, whether the vehicle is normally driving or not is determined whether the normal driving or not. Wow; As a result of performing the normal driving determination step 200, as the vehicle is determined to be driving normally, the operation of loads such as an air conditioner, a power steering, a blower, a refrigerator, and the like is performed. Determining whether or not the load variation is continuously detected whether there is a change in the load (300); As a result of performing the load change determination step 300, it is determined that there is no change in the operation of the load, the operation valve 3 is blocked to block the air passage, and then the EGR valve 2 is turned on / off. It is judged whether the normal operation of the EGR by measuring the downstream pressure of the EGR valve by turning off, if it does not operate normally, the exhaust gas recirculation characterized in that it comprises a test function performing step 400 indicating this through a predetermined method It is an inspection method of apparatus.

Description

배기가스 재순환 장치의 검사방법Inspection method of exhaust gas recirculation device

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

제1도는 본 발명 배기 가스 재순환 장치의 검사방법의 실행을 위한 시스템구성도.1 is a system configuration for the execution of the inspection method of the exhaust gas recirculation apparatus of the present invention.

제2도는 EGR 밸브를 온시켰을 시의 기류흐름을 나타낸 개략도.2 is a schematic diagram showing the air flow when the EGR valve is turned on.

제3도는 EGR 밸브를 오프시켰을 시의 기류흐름을 나타낸 개략도.3 is a schematic diagram showing the air flow when the EGR valve is turned off.

제4도는 본 발명 배기 가스 재순환 장치의 검사방법을 나타낸 제어흐름도.4 is a control flowchart showing a method for inspecting the exhaust gas recirculation apparatus of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

100 : 검사기능수행여부 판단단계 200 : 정상주행여부 판단단계100: determining whether or not to perform the inspection function 200: determining whether or not normal driving

300 : 부하변동여부 판단단계 400 : 검사기능 수행단계300: determining whether the load variation 400: performing the test function

410 : 대기측통로 차단단계 420 : 평균차압값 검출단계410: air passage blocking step 420: detecting the average differential pressure value

430 : 동작상태 판정단계430: operation state determination step

Claims (3)

EGR의 동작상태를 검사하는 검사기능의 수행여부를 지속적으로 검출하는 검사기능수행여부 판단단계와; 상기 검사기능수행여부 판단단계를 수행한 결과, 검사기능을 수행하라는 소정의 제어신호가 인가됨에 따라 자동차가 정상주행을 하고 있는지의 여부를 지속적으로 검출하는 정상주행여부 판단단계와; 상기 정상주행여부 판단단계를 수행한 결과, 자동차가 정상주행을 하고 있는 것으로 판단됨에 따라, 에어콘, 파워 스티어링, 송풍기, 냉장고 등의 부하의 작동에 변화가 있는지의 여부를 지속적으로 검출하는 부하변동여부 판단단계와; 상기 부하변동여부 판단단계를 수행한 결과, 부하의 작동에 변화가 없는 것으로 판단됨에 따라, 변환밸브를 작동시켜 대기측 통로를 차단한 후, EGR 밸브를 온/오프시켜 EGR 밸브의 하류압력을 측정함으로써 EGR의 정상동작여부를 판단하여, 정상적으로 동작하지 않을 경우에는 소정의 방법을 통해 이를 나타내는 검사기능 수행단계를 포함하여 구성됨을 특징으로 하는 "배기 가스 재순환 장치의 검사방법".Determining whether or not to perform an inspection function continuously detecting whether an inspection function for checking an operation state of the EGR is performed; Determining whether or not the vehicle is normally driven according to a predetermined control signal for performing the inspection function as a result of performing the inspection function execution determination step; As a result of performing the normal driving determination step, as the vehicle is determined to be driving normally, the load variation is continuously detected whether there is a change in the operation of the load of the air conditioner, power steering, blower, refrigerator, etc. A judging step; As a result of performing the step of determining whether the load fluctuates, it is determined that there is no change in the operation of the load, and after switching the atmospheric passage by operating the conversion valve, the EGR valve is turned on / off to measure the downstream pressure of the EGR valve. By determining whether or not the normal operation of the EGR, if the normal operation does not include a test function indicating the step of performing this through a predetermined method characterized in that the "inspection method of the exhaust gas recirculation apparatus". 제1항에 있어서, 상기 정상주행여부 판단단계의 정상주행여부 판단은, 하기의 조건을 모두 충족시킬 때 정상주행중이라고 판단하게 됨을 특징으로 하는 "배기 가스 재순환 장치의 검사방법".The method of claim 1, wherein the determination of whether to drive normally in the driving decision step includes determining that the vehicle is driving normally when all of the following conditions are met. 2500 RPM ≤ 엔진회전수 ≤ 3000 RPM2500 RPM ≤ engine speed ≤ 3000 RPM 0.14 < 스로틀밸브 열림각 < 0. 640.14 <Throttle valve opening angle <0. 64 0.15 < 충진효율 < 0.550.15 <Filling Efficiency <0.55 83km/h < 주행속도 < 103km/h83 km / h <Travel speed <103 km / h 엔진회전수의 증가분 < 42 RPMIncrease in engine speed <42 RPM 스로틀밸브 열림각의 증가분 < 0.0976Increment of Throttle Valve Opening Angle <0.0976 흡기온도 > 10℃Intake air temperature> 10 ℃ 제1항에 있어서, 상기 검사기능 수행단계는, 변환밸브를 작동시켜 대기측 통로를 차단하는 대기측 통로 차단단계와; 상기 대기측 통로 차단단계를 수행한 후, EGR 밸브를 온 시켜 EGR 밸브 온 시의 압력을 측정한 후, 상기 EGR 밸브를 오프시켜 EGR 밸브 오프 시의 압력을 소정의 횟수만큼 검출하여 그 차압의 평균값을 검출하는 평균차압 값 검출단계와; 상기 평균차압값 검출단계에서 검출한 차압 값의 평균이 소정의 범위 이내인가를 판단하여, 소정의 범위 이내일 경우에는 정상동작이라 판단하며, 그렇지 않을 경우에는 고장이라 판단하여, 고장 램프를 온 시켜 고장상태를 나타내는 동작상태 판정단계를 포함하여 구성됨을 특징으로 하는 "배기가스 재순환 장치의 검사방법".The method of claim 1, wherein the performing of the inspection function comprises: an atmospheric passage blocking step of blocking the atmospheric passage by operating a conversion valve; After performing the standby passage blocking step, the EGR valve is turned on to measure the pressure when the EGR valve is turned on, and then the EGR valve is turned off to detect the pressure when the EGR valve is turned off a predetermined number of times, and then the average value of the differential pressure. Detecting an average differential pressure value; It is determined whether the average of the differential pressure values detected in the average differential pressure value detection step is within a predetermined range, and when it is within the predetermined range, it is determined that the operation is normal, otherwise it is determined that a failure is caused, and the fault lamp is turned on. &Quot; Inspection method for exhaust gas recirculation device ", characterized by comprising an operation state determining step indicating a fault state. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950049605A 1995-12-14 1995-12-14 Testing method of exhaust gas recirculation apparatus KR0168815B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950049605A KR0168815B1 (en) 1995-12-14 1995-12-14 Testing method of exhaust gas recirculation apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950049605A KR0168815B1 (en) 1995-12-14 1995-12-14 Testing method of exhaust gas recirculation apparatus

Publications (2)

Publication Number Publication Date
KR970048048A true KR970048048A (en) 1997-07-29
KR0168815B1 KR0168815B1 (en) 1999-05-15

Family

ID=19439903

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950049605A KR0168815B1 (en) 1995-12-14 1995-12-14 Testing method of exhaust gas recirculation apparatus

Country Status (1)

Country Link
KR (1) KR0168815B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100401641B1 (en) * 2001-08-11 2003-10-17 현대자동차주식회사 Monitoring controlling method of exhaust gas recirculation system
KR100405679B1 (en) * 2000-12-19 2003-11-15 현대자동차주식회사 Apparatus and method for diagnosing operational state of exhaust gas recirculation system for a vehicle

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103025592B (en) * 2010-06-30 2016-08-03 普拉德研究及开发股份有限公司 For oil field equipment prediction and the system of health control, method and apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100405679B1 (en) * 2000-12-19 2003-11-15 현대자동차주식회사 Apparatus and method for diagnosing operational state of exhaust gas recirculation system for a vehicle
KR100401641B1 (en) * 2001-08-11 2003-10-17 현대자동차주식회사 Monitoring controlling method of exhaust gas recirculation system

Also Published As

Publication number Publication date
KR0168815B1 (en) 1999-05-15

Similar Documents

Publication Publication Date Title
KR100410753B1 (en) Method for misfire detection of engine in vehicle
US6631611B2 (en) Methodology of robust initialization of catalyst for consistent oxygen storage capacity measurement
US20020120386A1 (en) Method and apparatus for determining oxygen storage capacity time of a catalytic converter
KR920020199A (en) Tank ventilator, inspection method and device
JPH06273371A (en) Method for determining functionality of exhaust gas oxygen sensor
KR960025892A (en) Automotive electronic control device and its failure detection method
KR20020072558A (en) Method for detecting malfunctioning in a sensor
KR970048048A (en) Inspection method of exhaust gas recirculation device
JP3511639B2 (en) Exhaust gas recirculation control device
JP2724000B2 (en) Failure diagnosis device for EGR device
KR100302788B1 (en) Ignition diagnosis method for vehicle
KR0179547B1 (en) Diagnosing method of air flow sensor in internal cambustion engine
KR100250321B1 (en) Apparatus and method of leak inspection for evaporative system
KR100238393B1 (en) Self-diagnostic method of egr system
KR960023678A (en) Fault diagnosis device and method of variable intake system
KR100412711B1 (en) Method of checking rear o2 sensor for vehicles
KR970044918A (en) Oxygen sensor diagnosis device and method of automobile
KR100219207B1 (en) Failure diagnosis method of pressure sensor at intake system
KR960018163A (en) Apparatus and method for determining exhaust gas recirculation performance by measuring temperature
KR940015161A (en) Fault detection device and method of exhaust gas recirculation device
KR100435767B1 (en) a fail detecting method for cold start emission reduction device of car
JPH09209810A (en) Failure detector for intake air control valve mechanism of engine
JPH07222813A (en) Fire extinguishing system for vehicle
JPH0515564Y2 (en)
KR0158142B1 (en) Determining device and method of the deterioration of enzyme apparatus and oxygen quantity detecting apparatus using artificial signal

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20050929

Year of fee payment: 8

LAPS Lapse due to unpaid annual fee