KR940015234A - Fault detection device and detection method of fuel injector - Google Patents

Fault detection device and detection method of fuel injector Download PDF

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Publication number
KR940015234A
KR940015234A KR1019920026753A KR920026753A KR940015234A KR 940015234 A KR940015234 A KR 940015234A KR 1019920026753 A KR1019920026753 A KR 1019920026753A KR 920026753 A KR920026753 A KR 920026753A KR 940015234 A KR940015234 A KR 940015234A
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KR
South Korea
Prior art keywords
signal
fuel injector
timer
detection
injector
Prior art date
Application number
KR1019920026753A
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Korean (ko)
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KR0145686B1 (en
Inventor
정연광
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전성원
현대자동차 주식회사
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Priority to KR1019920026753A priority Critical patent/KR0145686B1/en
Publication of KR940015234A publication Critical patent/KR940015234A/en
Application granted granted Critical
Publication of KR0145686B1 publication Critical patent/KR0145686B1/en

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    • 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
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

연료분사기와 분사 구동부간에 연결되어 분사기 오프시 신호검출을 위한 저항과 캐패시터에 의한 신호검출부와, 검출신호로 인해 구동되는 트랜지스터, 구동출력 신호를 자유 업카운팅하는 타이머를 거쳐 중앙처리장치(CPU)에 입력시키도록 구성하고, 상기 분사 구동부는 CPU로부터 제1타이머를 거쳐 제어신호가 입력되도록 구성시켜, 제어신호와 검출신호간 차이를 타이머의 계수값 차이로 계산하여 분사기 고장여부를 검출하도록 한 것을 특징으로 하는 염료 분사기의 고장검출장치에 관한 것.Connected between the fuel injector and the injection drive unit, the CPU detects the signal when the injector is turned off, the signal detection unit by the capacitor, the transistor driven by the detection signal, and the timer freely counts the drive output signal. And the injection driving unit is configured to input a control signal from the CPU via the first timer, and calculates a difference between the control signal and the detection signal as a difference in the count value of the timer to detect whether the injector has failed. The apparatus for fault detection of dye injectors.

Description

연료분사기의 고장검출장치 및 검출방법Fault detection device and detection method of fuel injector

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

제3도는 본 발명의 연료분사기 고장 검출을 구비한 연료분사 시스템 회로도, 제4도는 제3도의 파형도, 제5도는 본 발명의 고장검출 방법을 보인 흐름도이다.FIG. 3 is a circuit diagram of a fuel injection system with fuel injector failure detection according to the present invention, FIG. 4 is a waveform diagram of FIG. 3, and FIG. 5 is a flowchart showing a failure detection method according to the present invention.

Claims (3)

연료분사기와 분사 구동부간에 연결되어 분사기 오프시 신호검출을 위한 저항과 캐패시터에 의한 신호검출부와, 검출신호로 인해 구동되는 트랜지스터, 구동출력 신호를 자유 업카운팅하는 타이머를 거쳐 중앙처리장치(CPU)에 입력시키도록 구성하고, 상기 분사 구동부는 CPU로부터 제1타이머를 거쳐 제어신호가 입력되도록 구성시켜, 제어신호와 검출신호간 차이를 타이머의 계수값 차이로 계산하여 분사기 고장여부를 검출하도록 한 것을 특징으로 하는 연료 분사기의 고장검출장치.Connected between the fuel injector and the injection drive unit, the CPU detects the signal when the injector is turned off, the signal detection unit by the capacitor, the transistor driven by the detection signal, and the timer freely counts the drive output signal. And the injection driving unit is configured to input a control signal from the CPU via the first timer, and calculates a difference between the control signal and the detection signal as a difference in the count value of the timer to detect whether the injector has failed. Fault detection device of the fuel injector. 중앙처리장치는 해당 연료분사기 구동을 위한 제어신호를 구동부에 보내고 이때의 타이머값을 일시저장하는 단계;검출신호 없을 때 연료분사기 고장으로 판단하고 검출신호 입력시 그 싯점에서의 타이머값을 제어신호 발생시 타이머값과 비교하는 단계;상기 타이머값 차이가 계산된 구동시간 보다 클 때 연료분사기 고장으로 판정하고 그렇지 않으면 정상으로 판정하는 단계로 이루어짐을 특징으로 하는 연료 분사기의 고장검출 방법.The central processing unit sends a control signal for driving the corresponding fuel injector to the driving unit and temporarily stores the timer value at this time; when there is no detection signal, it is determined that the fuel injector has failed and when the control signal is generated, the timer value at the point of time when the detection signal is input Comparing with a timer value; determining that the fuel injector failure when the difference between the timer value is greater than the calculated driving time, otherwise it is determined to be normal. 제2항에 있어서, 상기 검출신호는 구동부와 연료분사기간에 설치된 고장검출부의 출력신호로서 구동신호가 오프될 때 흐르는 캐패시터 전류에 의해 구동된 트랜지스터의 출력에 의한 것임을 특징으로 하는 연료 분사기의 고장검출방법.3. The fault detection of the fuel injector according to claim 2, wherein the detection signal is an output signal of a fault detector provided in the driver and the fuel injection period, and is caused by an output of a transistor driven by a capacitor current flowing when the drive signal is turned off. Way. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920026753A 1992-12-30 1992-12-30 Failure detecting device and method of fuel injector KR0145686B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920026753A KR0145686B1 (en) 1992-12-30 1992-12-30 Failure detecting device and method of fuel injector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920026753A KR0145686B1 (en) 1992-12-30 1992-12-30 Failure detecting device and method of fuel injector

Publications (2)

Publication Number Publication Date
KR940015234A true KR940015234A (en) 1994-07-20
KR0145686B1 KR0145686B1 (en) 1998-08-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920026753A KR0145686B1 (en) 1992-12-30 1992-12-30 Failure detecting device and method of fuel injector

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KR0145686B1 (en) 1998-08-17

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