KR100305843B1 - How to diagnose throttle position sensor failure - Google Patents
How to diagnose throttle position sensor failureInfo
- Publication number
- KR100305843B1 KR100305843B1 KR1019950055201A KR19950055201A KR100305843B1 KR 100305843 B1 KR100305843 B1 KR 100305843B1 KR 1019950055201 A KR1019950055201 A KR 1019950055201A KR 19950055201 A KR19950055201 A KR 19950055201A KR 100305843 B1 KR100305843 B1 KR 100305843B1
- Authority
- KR
- South Korea
- Prior art keywords
- tps
- position sensor
- throttle position
- output voltage
- δtps
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
- F02D41/222—Safety or indicating devices for abnormal conditions relating to the failure of sensors or parameter detection devices
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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
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/1035—Details of the valve housing
- F02D9/105—Details of the valve housing having a throttle position sensor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/04—Engine intake system parameters
- F02D2200/0404—Throttle position
Landscapes
- 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)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
이 발명은 스로틀 포지션 센서(TPS, Throttle Position Sensor) 고장 진단 방법에 관한 것이다. 동작에 필요한 전원이 공급되면, 전자 제어 장치(ECU, Electronic Control Unit)는 저속, 중속, 고속 영역의 3가지 포인트에서 스로틀 포지션 센서의 출력 전압을 감지하여 스로틀 밸브 개도(lTPS)를 계산하여 검출한 다음, 스로틀 밸브 개도를 계산하여 일정 출력 범위를 모두 초과하는지를 판단하여 스로틀 포지션 센서가 고장인지를 판단한다.The present invention relates to a throttle position sensor (TPS) fault diagnosis method. When the power required for operation is supplied, the Electronic Control Unit (ECU) senses the output voltage of the throttle position sensor at three points in the low, medium and high speed ranges to calculate and detect the throttle valve opening (l TPS ). Then, the throttle valve opening degree is calculated to determine whether the predetermined output range is exceeded to determine whether the throttle position sensor has failed.
Description
제1도는 본 발명의 실시예에 따른 스로틀 포지션 센서 고장 진단방법을 나타내는 흐름도이다.1 is a flowchart illustrating a throttle position sensor failure diagnosis method according to an embodiment of the present invention.
제2도는 본 발명의 실시예에 따른 스로틀 포지션의 개도에 따른 출력 전압의 변화를 나타낸 그래프이다.2 is a graph illustrating a change in output voltage according to an opening degree of a throttle position according to an exemplary embodiment of the present invention.
이 발명은 스로틀 포지션 센서(TPS, Throttle Position Sensor) 고장 진단방법에 관한 것이다.The present invention relates to a throttle position sensor (TPS) fault diagnosis method.
스로틀 포지션 센서는 스로틀 밸브의 개도를 검출하는 센서로, 스로틀 보디의 스로틀 축과 같이 회전하는 가변 저항기로서 스로틀 밸브의 개도를 검출한다.A throttle position sensor is a sensor which detects the opening degree of a throttle valve, and detects the opening degree of a throttle valve as a variable resistor which rotates like the throttle axis of a throttle body.
스로틀 밸브의 회전에 따라 출력 전압이 변화함으로써 전자 제어 장치(ECU, Electronic Control Unit)는 스로틀 밸브의 개도를 감지한다.As the output voltage changes as the throttle valve rotates, the electronic control unit (ECU) detects the opening of the throttle valve.
이에 따라 전자 제어 장치는 출력 전압과 엔진 회전수등 다른 입력 신호를 합쳐서 엔진 모드를 판정하여 연료 분사량을 제어한다.Accordingly, the electronic control device combines the output voltage and other input signals such as the engine speed to determine the engine mode and controls the fuel injection amount.
이와 같은 스로틀 포지션 센서는 정상적인 점화시기 및 분사 제어를 위해서 매우 중요하다.This throttle position sensor is very important for normal ignition timing and injection control.
종래의 스로틀 포지션 센서의 고장 진단방법은, 스로틀 포지션 센서의 출력 전압이 스로틀 포지션 센서가 정상적으로 작동하는 범위 안에 있는지를 감지하여 스로틀 포지션 센서가 정상적으로 작동되는지를 판단한다.The conventional fault diagnosis method of the throttle position sensor detects whether the output voltage of the throttle position sensor is within a range in which the throttle position sensor is normally operated, and determines whether the throttle position sensor is normally operated.
스로틀 포지션 센서의 출력 전압이 스로틀 포지션 센서가 정상적으로 작동하는 범위의 최소치와 최대치 사이에 있는지만을 감지한다.It only detects whether the output voltage of the throttle position sensor is between the minimum and maximum values of the range in which the throttle position sensor operates normally.
그러나 상기 종래의 기술은 출력 전압이 중간치에서 변하지 않는 경우에 정상적으로 작동하는지를 정확하게 알 수 없는 문제점이 있다.However, the conventional technique has a problem in that it is impossible to know exactly whether the output voltage operates normally when the output voltage does not change from the middle value.
따라서 이 발명의 목적은 상기한 종래의 문제점을 해결하기 위한 것으로서, 스로틀 포지션 센서가 고장인지를 정확하게 판정하는 스로틀 포지션 센서 고장 진단방법을 제공하기 위한 것이다.Accordingly, an object of the present invention is to provide a method for diagnosing a throttle position sensor failure for accurately determining whether or not a throttle position sensor has failed.
상기한 목적을 달성하기 위한 수단으로서 이 발명의 구성은, 저속, 중속. 고속 영역의 3가지 포인트에서 스로틀 포지션 센서의 출력 전압을 검출한 후, 스로틀 밸브 개도를 계산하는 단계와; 상기 저속, 중속, 고속 영역의 3가지 포인트에서의 스로틀 밸브 개도에 대응하는 출력 전압이 정상 작동 출력 범위내에 있는 지를 판단하여 스로틀 포지션 센서가 고장인지를 검출하는 단계와; 상기 저속, 중속, 고속 영역의 3가지 포인트에서의 스로틀 밸브 개도에 대응하는 출력 전압이 정상 작동 출력 범위내에 있지 않다고 판단되면, 제어신호를 출력하는 단계로 이루어진다.As a means for achieving the above object, the configuration of the present invention is low speed, medium speed. Calculating the throttle valve opening degree after detecting the output voltage of the throttle position sensor at three points in the high speed region; Determining whether the throttle position sensor has failed by determining whether the output voltage corresponding to the throttle valve opening degree at the three points of the low speed, medium speed, and high speed range is within a normal operating output range; And if it is determined that the output voltage corresponding to the throttle valve opening degree at the three points of the low speed, the medium speed, and the high speed range is not within the normal operating output range, the control signal is output.
상기한 구성에 의하여, 이 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 이 발명을 용이하게 실시할 수 있는 가장 바람직한 실시예를 첨부된 도면을 참조로 하여 상세히 설명한다.By the above configuration, the most preferred embodiment that can be easily carried out by those skilled in the art with reference to the present invention will be described in detail with reference to the accompanying drawings.
제1도는 본 발명의 실시예에 따른 스로틀 포지션 센서 고장 진단방법을 나타내는 흐름도이고, 제2도는 본 발명의 실시예에 따른 스로틀 포지션의 개도에 따른 출력 전압의 변화를 나타낸 그래프이다.1 is a flowchart illustrating a method for diagnosing a fault in a throttle position sensor according to an exemplary embodiment of the present invention, and FIG. 2 is a graph illustrating a change in output voltage according to an opening degree of a throttle position according to an exemplary embodiment of the present invention.
첨부한 제1도에 도시되어 있는 바와 같이, 이 발명의 실시예에 따른 스로틀 포지션 센서 고장 진단방법은, 저속, 중속, 고속 영역의 3가지 포인트에서 스로틀 포지션 센서의 출력 전압을 감지한 후, 스로틀 밸브 개도를 계산하는 단계(S1)와; 저속, 중속, 고속 영역에서의 스로틀 밸브 개도에 대응하는 출력 전압이 정상 작동 출력 범위내에 있는 지를 판단하여 스로틀 포지션 센서가 고장인지를 검출하는 단계(S2)와; 저속, 중속, 고속 영역의 3가지 포인트에서의 상기 출력 전압이 정상 작동 출력 범위내에 있지 않다고 판단되면, 제어신호를 출력하는 단계(S3)로 이루어진다.As shown in the accompanying FIG. 1, the throttle position sensor fault diagnosis method according to an embodiment of the present invention, after detecting the output voltage of the throttle position sensor at three points of the low speed, medium speed, high speed region, Calculating a valve opening degree (S1); Determining whether the throttle position sensor has failed by determining whether the output voltage corresponding to the throttle valve opening degree in the low speed, medium speed, and high speed range is within a normal operating output range (S2); If it is determined that the output voltage at the three points of the low speed, medium speed, and high speed range is not within the normal operating output range, step S3 is output.
상기한 구성에 의한, 이 발명의 실시예에 따른 스로틀 포지션 센서 고장 진단방법의 작용은 다음과 같다.The operation of the throttle position sensor failure diagnosis method according to the embodiment of the present invention by the above configuration is as follows.
먼저, 동작에 필요한 전원이 공급되면, 전자 제어 장치(ECU, Electronic Control Unit)는 저속. 중속, 고속 영역의 3가지 포인트에서 스로틀 포지션 센서의 출력 전압을 감지하여 스로틀 밸브 개도(1TPS)를 계산하여 검출한다.First, when the power required for operation is supplied, the Electronic Control Unit (ECU) is low speed. The output voltage of the throttle position sensor is sensed at three points in the medium speed and high speed areas to calculate and detect the throttle valve opening amount (1 TPS ).
다음, 스로틀 밸브 개도에 대응하는 출력 전압이 정상 작동 출력 범위내에 있는 지를 판단하여 스로틀 포지션 센서가 고장인지를 검출한다.Next, it is determined whether the output voltage corresponding to the throttle valve opening degree is within the normal operating output range to detect whether the throttle position sensor has failed.
이때, 정상 작동 출력 범위는 제2도에 도시한 바와 같이, 저속, 중속, 고속 영역의 3가지 포인트에서의 스로틀 밸브 개도에 대응하는 출력 전압인 TPS(a) 출력값, TPS(b) 출력값, TPS(c) 출력값이 다음과 같은 기준치 범위를 가지면 되고, 이 기준치에서 벗어나면 스로틀 포지션 센서가 고장난 것으로 판단한다.At this time, the normal operating output range is TPS (a) output value, TPS (b) output value, TPS, which is an output voltage corresponding to the throttle valve opening degree at three points of the low speed, medium speed, and high speed regions, as shown in FIG. (c) The output value may have the following reference value range, and if it is out of this reference value, it is determined that the throttle position sensor has failed.
TPS(a) - ΔTPS < TPS(a) 출력값 < TPS(a) + ΔTPSTPS (a)-ΔTPS <TPS (a) Output <TPS (a) + ΔTPS
TPS(b) - ΔTPS < TPS(b) 출력값 < TPS(b) + ΔTPSTPS (b)-ΔTPS <TPS (b) Output <TPS (b) + ΔTPS
TPS(c) - ΔTPS < TPS(c) 출력값 < TPS(c) + ΔTPSTPS (c)-ΔTPS <TPS (c) Output <TPS (c) + ΔTPS
이 때 ΔTPS는 미리 설정한 허용치이고, TPS(a), TPS(b). TPS(c)는 제2도에 보인 바와 같이, 스로틀 포지션 센서가 정상일 때, 각각의 스로틀 밸브 개도에 대한 정상 출력 전압을 나타낸다.(DELTA) TPS at this time is a preset tolerance value, TPS (a) and TPS (b). TPS (c) represents the normal output voltage for each throttle valve opening when the throttle position sensor is normal, as shown in FIG.
다음, 상기 스로틀 포지션 센서에서 저속, 중속, 고속 영역의 3가지 포인트에서의 스로틀 밸브 개도에 대응하는 출력 전압이 정상 작동 범위내에 있지 않다고 판단되면, 제어신호를 출력한다.Next, in the throttle position sensor, if it is determined that the output voltage corresponding to the throttle valve opening degree at the three points of the low speed, the medium speed, and the high speed range is not within the normal operating range, a control signal is output.
그러므로 본 발명은 이상에서와 같이 스로틀 포지션 센서가 고장인지를 정확하게 판정할 수 있는 장점이 있다.Therefore, the present invention has the advantage of accurately determining whether the throttle position sensor is broken as described above.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950055201A KR100305843B1 (en) | 1995-12-23 | 1995-12-23 | How to diagnose throttle position sensor failure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950055201A KR100305843B1 (en) | 1995-12-23 | 1995-12-23 | How to diagnose throttle position sensor failure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR970044679A KR970044679A (en) | 1997-07-26 |
| KR100305843B1 true KR100305843B1 (en) | 2001-12-17 |
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ID=37530229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019950055201A Expired - Fee Related KR100305843B1 (en) | 1995-12-23 | 1995-12-23 | How to diagnose throttle position sensor failure |
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| Country | Link |
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| KR (1) | KR100305843B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121834A (en) * | 2010-11-30 | 2011-07-13 | 力帆实业(集团)股份有限公司 | Detection method for throttle valve position sensor detection device |
| KR20180015020A (en) * | 2016-08-02 | 2018-02-12 | 현대자동차주식회사 | A method for controlling position of vcm-flap and an apparatus for the same |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030044103A (en) * | 2001-11-28 | 2003-06-09 | 현대자동차주식회사 | Throttle valve position sensor monitoring method |
| KR100594582B1 (en) * | 2004-02-25 | 2006-06-30 | 씨멘스 오토모티브 주식회사 | How to diagnose throttle position sensor failure |
-
1995
- 1995-12-23 KR KR1019950055201A patent/KR100305843B1/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121834A (en) * | 2010-11-30 | 2011-07-13 | 力帆实业(集团)股份有限公司 | Detection method for throttle valve position sensor detection device |
| KR20180015020A (en) * | 2016-08-02 | 2018-02-12 | 현대자동차주식회사 | A method for controlling position of vcm-flap and an apparatus for the same |
| KR101866044B1 (en) | 2016-08-02 | 2018-06-08 | 현대자동차주식회사 | A method for controlling position of vcm-flap and an apparatus for the same |
| US10233878B2 (en) | 2016-08-02 | 2019-03-19 | Hyundai Motor Company | Method and apparatus for controlling quantity of suction air |
Also Published As
| Publication number | Publication date |
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| KR970044679A (en) | 1997-07-26 |
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