KR100302788B1 - Ignition diagnosis method for vehicle - Google Patents

Ignition diagnosis method for vehicle Download PDF

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Publication number
KR100302788B1
KR100302788B1 KR1019970066162A KR19970066162A KR100302788B1 KR 100302788 B1 KR100302788 B1 KR 100302788B1 KR 1019970066162 A KR1019970066162 A KR 1019970066162A KR 19970066162 A KR19970066162 A KR 19970066162A KR 100302788 B1 KR100302788 B1 KR 100302788B1
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South Korea
Prior art keywords
knock signal
ignition
misfire
knock
diagnosis method
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KR1019970066162A
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Korean (ko)
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KR19990047658A (en
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장정모
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이계안
현대자동차주식회사
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P17/00—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines
    • F02P17/02—Checking or adjusting ignition timing
    • 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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1497—With detection of the mechanical response of the engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P5/00—Advancing or retarding ignition; Control therefor
    • F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
    • F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
    • F02P5/15—Digital data processing
    • F02P5/152—Digital data processing dependent on pinking
    • 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
    • G01M15/11—Testing internal-combustion engines by detecting misfire

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

PURPOSE: An ignition diagnosis method is provided to directly monitor an explosion in a combustion chamber by receiving the state of a real explosion from a knock sensor, using an output voltage of a knock signal and detecting misfire, without using the calculation of the variation of angular acceleration. CONSTITUTION: An ignition diagnosis method is composed of a first step reading operation data(S100); a second step determining whether ignition number map data set by an engine rpm are equal to ignition number determined by a knock signal(S200); a third step determining whether a critical voltage of the knock signal set by the engine rpm and a load is lower than a voltage of a real knock signal(S300); and a fourth step outputting misfire state if the second step and the third step are not satisfied.

Description

자동차의 점화 진단 방법How to diagnose the ignition of the car

본 발명은 내연기관의 엔진 점화 계통에 관한 것으로서, 실화상태를 정확하게 검출하여 배기 가스 규제에 대응하도록 하기 위한 자동차의 점화 진단 방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine ignition system of an internal combustion engine, and more particularly, to an ignition diagnosis method of a vehicle for accurately detecting a misfire state and responding to exhaust gas regulation.

배기 가스 규제가 엄격해지면서 이에 대응하기 위하여 유해 물질 배출의 원인이 되는 점화 불량 즉 실화가 발생하지 않도록 하기 위하여 실화 검출 장치를 개발하는 노력이 활발하게 진행되고 있다.In order to cope with stricter exhaust gas regulations, efforts have been actively made to develop a misfire detection device in order to prevent ignition failures, ie misfires, that cause harmful substances to be released.

따라서 엔진의 실화가 발생하는 조건을 시험하여 실화가 덜 발생하도록 하는 제어가 수행되게 하는 노력이 이루어지고 있다.Therefore, efforts have been made to test the conditions under which misfires occur in the engine so that control is performed so that misfires occur less.

그런데 이러한 수많은 노력에도 불구하고 실화를 검출하는 방법은 아직 그 기술 수준이 미흡하여 외국에서 사용하는 방법을 국내에 그대로 적용하고 있다.However, despite such a lot of efforts, the method of detecting a true story still lacks the technical level, and the method used in foreign countries has been applied in Korea as it is.

특히 크랭크 각 센서(미도시)로부터 출력되는 신호의 각가속도값을 이용하여 각가속도 변화량이 임계값 이상으로 출력되면 실화로 판단하는 방법을 이용한다.In particular, when the angular acceleration variation is output above the threshold value by using the angular acceleration value of the signal output from the crank angle sensor (not shown), a method of determining misfire is used.

그런데 종래와 같이 크랭크 각 센서의 각가속도를 이용하여 실화를 판단하게 되면 기어 변속 및 급가감속 그리고 도로 상황에 따라 실화가 아닌데도 크랭크 각 센서의 각가속도가 변화량이 급격하여 임계값을 초과하는 경우가 발생할 수 있어 실화 검출이 부정확한 경우가 발생한다는 문제점이 발생한다.However, when judging misfire by using the angular acceleration of the crank angle sensor as in the prior art, there may be a case where the angular acceleration of the crank angle sensor changes rapidly and exceeds the threshold value even if the misfire is not true due to gear shift, rapid deceleration and road conditions. The problem arises that the misfire detection occurs incorrectly.

본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로서, 크랭크각 센서의 각가속도 변화량 계산 방식을 이용하지 않고 실제 엔진의 폭발 상황을 노크 센서로부터 인가받아 노크 신호 출력 전압을 이용하여 실화를 검출하도록 하므로써 직접 연소실 폭발 상황을 근본적으로 모니터링 하는데 그 목적이 있다.The present invention has been made to solve the above problems, and by using the knock signal output voltage to detect the misfire by receiving the actual explosion state of the engine from the knock sensor without using the angular acceleration change calculation method of the crank angle sensor. The purpose is to fundamentally monitor direct combustion chamber explosions.

상기한 목적을 달성하기 위하여 본 발명은The present invention to achieve the above object

운행 정보를 판독하는 1단계와;Reading step information;

엔진 회전수에 따라 설정된 점화 횟수 맵 데이터와 노크 신호 판별에 의한 점화 횟수가 동일한지를 비교 판단하는 2단계와;Comparing and determining whether the ignition number map data set according to the engine speed is equal to the ignition number by knock signal determination;

엔진 회전수 및 부하에 따라 설정된 노크 신호의 임계 전압이 실제 발생하는 노크 신호 전압보다 작은지를 비교 판단하는 3단계와;Comparing and determining whether the threshold voltage of the knock signal set according to the engine speed and the load is smaller than the knock signal voltage actually generated;

2단계와 3단계에서 해당 범위에 포함되지 않으면 실화상태로 출력하는 4단계로 이루어지는 것을 특징으로 한다.If it is not included in the corresponding range in the second and third stages, characterized in that the four stages to output in a misfire state.

도 1은 본 발명의 실시예에 따른 실화 검출 장치에 관한 블록도이고,1 is a block diagram of a misfire detection apparatus according to an embodiment of the present invention;

도 2는 본 발명을 실현하기 위한 실화 검출 방법에 관한 순서도이다.2 is a flowchart of a misfire detection method for realizing the present invention.

이하, 첨부된 도면을 참조로 하여 본 발명의 가장 바람직한 실시예를 상세히 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail the most preferred embodiment of the present invention.

본 발명의 구성을 도 1을 참고로 하여 설명하면 다음과 같다.Referring to the configuration of the present invention with reference to Figure 1 as follows.

엔진의 회전 상태를 검출하는 엔진 회전수 센서(11)와, 엔진의 연소실에서 이상 연소 및 이에 동반하여 발생하는 진동 상태를 검출하는 노크 센서(12)와, 엔진 회전의 부하가 되는 에어콘과 같은 기타 장치(13)와, 상기 센서(11~13)의 신호를 인가받아 엔진에 가장 적합한 제어를 수행하는 엔진 제어부(20)와, 상기 엔진 제어부(20)의 출력신호에 따라 실화에 대한 내용을 나타내는 디스플레이(30)로 이루어진다.Engine speed sensor 11 for detecting the rotational state of the engine, Knock sensor 12 for detecting the abnormal state of combustion and accompanying vibrations in the combustion chamber of the engine, and other air conditioners such as air conditioning to load the engine rotation Apparatus 13, an engine control unit 20 for receiving the signals of the sensors 11 to 13 to perform the most suitable control for the engine, and the contents of the misfire according to the output signal of the engine control unit 20 Display 30.

상기와 같이 이루어지는 본 발명의 동작을 도 2를 참고로 하여 설명하면 다음과 같다.Referring to Figure 2 the operation of the present invention made as described above is as follows.

먼저 엔진 제어부(20)는 각 센서(11~13)로부터 운행되는 차량의 정보를 판독하여(S100), 엔진 회전수에 따라 설정된 폭발 횟수 맵 데이터가 노크 센서(12)로부터 인가되는 노크 신호 판별에 의한 실제 폭발 횟수와 동일한지를 비교 판단한다(S200).First, the engine control unit 20 reads information of a vehicle running from each sensor 11 to 13 (S100), and determines the knock signal to which the explosion number map data set according to the engine speed is applied from the knock sensor 12. Compare and determine whether the same as the actual number of explosions (S200).

이때, 맵 데이터는 여러 시험과정을 거쳐 엔진 회전수에 따른 점화 즉 폭발 횟수가 설정되어 도시하지 않은 엔진 제어부의 롬에 미리 저장되며, 엔진 회전수 및 부하에 따라 설정된 노크 신호의 임계전압 맵 데이터 또한 여러 시험과정을 통해 얻어지는 데이터로서 엔진 제어부의 롬에 미리 저장된다.At this time, the map data is pre-stored in the ROM of the engine control unit (not shown) according to the number of ignitions or explosions according to the engine speed through various test processes, and also the threshold voltage map data of the knock signal set according to the engine speed and the load. Data obtained through various test procedures is pre-stored in the ROM of the engine control unit.

상기 S200에서 맵 데이터상의 폭발 횟수가 실제 폭발 횟수와 동일하지 않은 것으로 판단되면 실화로 판정하여 실화 발생으로 처리한다(S410).If it is determined in S200 that the number of explosions on the map data is not the same as the actual number of explosions, it is determined as a misfire and is treated as a misfire occurrence (S410).

따라서 디스플레이(30)에 실화 발생으로 모니터링 된다.Therefore, the display 30 is monitored as a misfire occurrence.

그러나 S200 맵 데이터상의 폭발 횟수가 실제 폭발 횟수와 동일한 것으로 판단되면 엔진 회전수 및 부하에 따라 설정된 노크 신호 임계 전압이 실제 노크 신호전압보다 큰 지를 비교 판단한다(S300).However, when it is determined that the number of explosions on the S200 map data is the same as the actual number of explosions, it is determined whether the knock signal threshold voltage set according to the engine speed and the load is greater than the actual knock signal voltage (S300).

S300에서 노크 신호 임계 전압값이 실제 노크 신호 전압보다 큰 것으로 판단되면 점화가 정상적으로 이루어지지 않은 것이므로 실화 발생으로 처리한다(S410).If it is determined in S300 that the knock signal threshold voltage value is greater than the actual knock signal voltage, the ignition is not performed normally, and thus, it is treated as a misfire occurrence (S410).

따라서 디스플레이(30)에 실화가 발생한 것으로 모니터링 된다.Therefore, it is monitored that misfire has occurred in the display 30.

그러나 S300에서 노크 신호 임계 전압값이 실제 노크 신호 전압보다 작은 것으로 판단되면 점화가 정상적으로 이루어진 것이므로 정상 연소로 처리한다(S420).However, if it is determined in S300 that the knock signal threshold voltage value is smaller than the actual knock signal voltage, the ignition is normally performed, and thus the process is processed as normal combustion (S420).

따라서 디스플레이(30)에 실화가 발생하지 않은 것으로 모니터링 된다.Therefore, it is monitored that misfire has not occurred in the display 30.

노크 센서로부터 출력되는 신호에 따라 실제 연소실 내부의 폭발 여부를 판단하므로 실화 상태가 정확하게 검출되어 따라서 엄격한 배기 가스 규제에 대응력을 갖출 수 있게 된다.Since the actual output of the combustion chamber is judged according to the signal output from the knock sensor, the misfire state can be accurately detected, and thus, it is possible to respond to strict exhaust gas regulations.

Claims (1)

운행 정보를 판독하는 1단계와;Reading step information; 엔진 회전수에 따라 설정된 점화 횟수 맵 데이터와 노크 신호 판별에 의한 점화 횟수가 동일한지를 비교 판단하는 2단계와;Comparing and determining whether the ignition number map data set according to the engine speed is equal to the ignition number by knock signal determination; 엔진 회전수 및 부하에 따라 설정된 노크 신호의 임계 전압이 실제 발생하는 노크 신호 전압보다 작은지를 비교 판단하는 3단계와;Comparing and determining whether the threshold voltage of the knock signal set according to the engine speed and the load is smaller than the knock signal voltage actually generated; 2단계와 3단계에서 해당 범위에 포함되지 않으면 실화상태로 출력하는 4단계로 이루어지는 자동차의 점화 진단 방법.An ignition diagnosis method for a vehicle comprising four steps of outputting in a misfire state if it is not included in the corresponding range in steps 2 and 3.
KR1019970066162A 1997-12-05 1997-12-05 Ignition diagnosis method for vehicle KR100302788B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012064039A2 (en) 2010-11-11 2012-05-18 Ryu Seng-Gyu Taekwondo uniform

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100412820B1 (en) * 2001-04-26 2003-12-31 현대자동차주식회사 Method for misfire detection of engine in vehicle
CN116341123B (en) * 2023-05-30 2023-08-11 麦格纳动力总成(江西)有限公司 Method and system for optimizing knocking noise of automobile gearbox

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012064039A2 (en) 2010-11-11 2012-05-18 Ryu Seng-Gyu Taekwondo uniform
EP2638813A2 (en) * 2010-11-11 2013-09-18 Ryu, Seng-gyu Taekwondo uniform
EP2638813A4 (en) * 2010-11-11 2015-01-21 Seng-Gyu Ryu Taekwondo uniform

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