KR950019058A - Detection signal compensation method in case of failure of engine coolant temperature sensor - Google Patents

Detection signal compensation method in case of failure of engine coolant temperature sensor Download PDF

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Publication number
KR950019058A
KR950019058A KR1019930027565A KR930027565A KR950019058A KR 950019058 A KR950019058 A KR 950019058A KR 1019930027565 A KR1019930027565 A KR 1019930027565A KR 930027565 A KR930027565 A KR 930027565A KR 950019058 A KR950019058 A KR 950019058A
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KR
South Korea
Prior art keywords
coolant temperature
state
temperature detection
engine coolant
signal
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KR1019930027565A
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Korean (ko)
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KR0149352B1 (en
Inventor
이윤상
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전성원
현대자동차 주식회사
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Priority to KR1019930027565A priority Critical patent/KR0149352B1/en
Publication of KR950019058A publication Critical patent/KR950019058A/en
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Publication of KR0149352B1 publication Critical patent/KR0149352B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/14—Indicating devices; Other safety devices
    • F01P11/16—Indicating devices; Other safety devices concerning coolant temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2025/00—Measuring
    • F01P2025/08—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2037/00—Controlling

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

Abstract

엔진의 냉각수 온도를 감지하여 해당하는 신호를 출력하는 엔진 냉각수온 감지장치에 이상이 발생할 경우에 냉각수온의 감지신호를 고정값까지 해당 기울기만큼 서서히 변화시킬 수 있도록 하기 위한 엔진 냉각수온 감지장치 고장 판정시 감지신호 보상방법을 제공하기 위하여, 엔진 냉각수온 감지부(1)에서 인가되는 신호를 판독하여 이용 가능한 디지탈 상태로 변환시킨 후, 인가되는 신호의 상태가 정상상태인지를 판단하는 단계와; 냉각수온 감지부(1)에서 인가되는 신호의 상태가 비정상상태일 경우에, 냉각수온 감지부(1)의 상태를 고장상태로 판단하여 고장이 발생하기 직전의 감지신호로 냉각수온 감지부(1)의 감지신호를 판단하고 고장 발생횟수를 비교하는 단계와; 고장발생 횟수가 설정횟수 이상일 경우에 엔진 냉각수온 감지부(1)의 상태를 고장상태로 판정하는 단계와; 엔진 냉각수온 감지부(1)의 상태가 고장상태로 판정될 경우에, 전상태에서 판단된 엔진 냉각수온 감지값에서 설정된 기울기만큼 변화시켜 보상값을 산출하고, 산출된 값으로 엔진 냉각수온 감지신호를 보상하여 해당 제어신호를 액츄에이터(3)로 출력하는 단계로 이루어져 있다.Defective determination of engine coolant temperature detection device for changing the coolant temperature detection signal by a corresponding slope to a fixed value when an abnormality occurs in the engine coolant temperature detection device that detects the coolant temperature of the engine and outputs a corresponding signal. In order to provide a time detection signal compensation method, the step of determining whether the state of the applied signal is normal after reading the signal applied from the engine coolant temperature sensing unit 1 and converting it into an available digital state; When the state of the signal applied from the coolant temperature detection unit 1 is in an abnormal state, the coolant temperature detection unit 1 determines the state of the coolant temperature detection unit 1 as a failure state and uses the coolant temperature detection unit 1 as a detection signal immediately before a failure occurs. Judging the detection signal and comparing the number of occurrences of the failure; Determining a state of the engine coolant temperature detecting unit 1 as a failure state when the number of occurrences of the failure is more than a set number of times; When the state of the engine coolant temperature detection unit 1 is determined to be a fault state, the engine coolant temperature detection signal is calculated by changing the slope by the set slope from the engine coolant temperature detection value determined in the previous state, and calculating the engine coolant temperature detection signal using the calculated value. Compensating the control signal and outputs the corresponding control signal to the actuator (3).

Description

엔진 냉각수온 감지장치 고장 판정시 감지신호 보상방법Detection signal compensation method in case of failure of engine coolant temperature sensor

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

제1도는 이 발명의 실시예에 따른 엔진 냉각수온 감지장치 고장 판정시 감지신호 보산장치의 블럭도.1 is a block diagram of a detection signal estimator in determining an engine coolant temperature sensor failure according to an embodiment of the present invention.

제2도는 이 발명의 실시예에 따른 엔진 냉각수온 감지장치 고장 판정시 감지신호 보상방법의 동작 순서도.2 is an operation flowchart of a detection signal compensation method when determining a failure of an engine coolant temperature sensor according to an exemplary embodiment of the present invention.

제3도는 이 발명의 실시예에 따른 엔진 냉각수온 감지장치 고장 판정시 보상신호의 파형도이다.3 is a waveform diagram of a compensation signal when determining a failure of an engine coolant temperature sensor according to an exemplary embodiment of the present invention.

Claims (2)

엔진 냉각수온 감지부(1)에서 인가되는 신호를 판독하여 이용 가능한 디지탈 상태로 변환시킨 후, 인가되는 신호의 상태가 정상상태인지를 판단하는 단계와; 냉각수온 감지부(1)에서 인가되는 신호의 상태가 비정상상태일 경우에, 냉각수온 감지부(1)의 상태를 고장상태로 판단하여 고장이 발생하기 직전의 감지신호로 냉각수온 감지부(1)의 감지신호를 판단하고 고장 발생횟수를 비교하는 단계와; 고장발생 횟수가 설정횟수 이상일 경우에 엔진 냉각수온 감지부(1)의 상태를 고장상태로 판정하는 단계와; 엔진 냉각수온 감지부(1)의 상태가 고장상태로 판정될 경우에, 전상태에서 판단된 엔진 냉각수온 감지값에서 설정된 기울기만큼 변화시켜 보상값을 산출하고, 산출된 값으로 엔진 냉각수온 감지신호를 보상하여 해당 제어신호를 액츄에이터(3)로 출력하는 단계로 이루어져 있는 것을 특징으로 하는 엔진 냉각수온 감지장치 고장 판정시 감지신호 보상방법.Reading a signal applied from the engine coolant temperature detection unit 1 and converting the signal into an available digital state, and then determining whether the state of the applied signal is normal; When the state of the signal applied from the coolant temperature detection unit 1 is in an abnormal state, the coolant temperature detection unit 1 determines the state of the coolant temperature detection unit 1 as a failure state and uses the coolant temperature detection unit 1 as a detection signal immediately before a failure occurs. Judging the detection signal and comparing the number of occurrences of the failure; Determining a state of the engine coolant temperature detecting unit 1 as a failure state when the number of occurrences of the failure is more than a set number of times; When the state of the engine coolant temperature detection unit 1 is determined to be a fault state, the engine coolant temperature detection signal is calculated by changing the slope by the set slope from the engine coolant temperature detection value determined in the previous state, and calculating the engine coolant temperature detection signal using the calculated value. Compensating the detection signal compensation method for determining the engine coolant temperature sensor failure characterized in that it comprises the step of outputting the control signal to the actuator (3). 제1항에 있어서, 엔진 냉각수온 감지부(1)의 상태가 고장상태로 판정될 경우에,The method of claim 1, wherein when the state of the engine coolant temperature detection unit 1 is determined to be a fault state, 로 엔진진 냉각수온 감지값을 보상하는 것을 특징으로 하는 엔진 냉각수온 감지장치 고장 판정시 감지신호 보상방법.And detecting the engine coolant temperature detection value by detecting the engine coolant temperature detection value. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930027565A 1993-12-14 1993-12-14 A sensing recovery method in a defective proving for an engine coolant temperature sensing system KR0149352B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930027565A KR0149352B1 (en) 1993-12-14 1993-12-14 A sensing recovery method in a defective proving for an engine coolant temperature sensing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930027565A KR0149352B1 (en) 1993-12-14 1993-12-14 A sensing recovery method in a defective proving for an engine coolant temperature sensing system

Publications (2)

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KR950019058A true KR950019058A (en) 1995-07-22
KR0149352B1 KR0149352B1 (en) 1998-10-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100260177B1 (en) * 1995-12-30 2000-08-01 정몽규 Water temperature sensor of a car

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100260177B1 (en) * 1995-12-30 2000-08-01 정몽규 Water temperature sensor of a car

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