KR100572010B1 - rationality check method of oil temperature sensor - Google Patents

rationality check method of oil temperature sensor Download PDF

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KR100572010B1
KR100572010B1 KR1020060011583A KR20060011583A KR100572010B1 KR 100572010 B1 KR100572010 B1 KR 100572010B1 KR 1020060011583 A KR1020060011583 A KR 1020060011583A KR 20060011583 A KR20060011583 A KR 20060011583A KR 100572010 B1 KR100572010 B1 KR 100572010B1
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South Korea
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oil temperature
jumper
fault
temperature sensor
jumper fault
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KR1020060011583A
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Korean (ko)
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KR20060026916A (en
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최영선
조성택
윤윤상
김형규
심장선
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주식회사 케피코
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/68—Inputs being a function of gearing status
    • F16H59/72—Inputs being a function of gearing status dependent on oil characteristics, e.g. temperature, viscosity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/4008—Control of circuit pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
    • F16H2061/1208—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures with diagnostic check cycles; Monitoring of failures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
    • F16H2061/1256—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures characterised by the parts or units where malfunctioning was assumed or detected
    • F16H2061/126—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures characterised by the parts or units where malfunctioning was assumed or detected the failing part is the controller
    • F16H2061/1264—Hydraulic parts of the controller, e.g. a sticking valve or clogged channel

Abstract

본 발명은 자동변속기의 유온센서 점퍼결함 검출방법에 관한 것으로, 특히 차량용 변속기오일온도의 타당성을 검출하여 유온센서 점퍼결함에 의한 변속기의 다른 고장 판단에 대한 정확성을 기하고, 각 운전영역에 따른 오일온도를 추정하여 센서 고장시 대체오일온도를 계산하여 변속충격을 저감시킬 수 있도록 한 것을 목적으로 한다.The present invention relates to a method for detecting a jumper fault of an oil temperature sensor of an automatic transmission, and in particular, by detecting the validity of the transmission oil temperature for a vehicle, determining the accuracy of the determination of another failure of the transmission by the fault of the oil temperature sensor jumper, and the oil according to each operation region. The purpose of this study is to estimate the temperature and to calculate the replacement oil temperature in the event of a sensor failure to reduce shift shock.

그 구성으로는 자동변속기가 유압제어장치에 있어서, 변속기의 특정시간동안 비정상적인 오일온도의 과도한 증감을 검출하여 유온센서의 점퍼결함 여부를 판단하는 유온센서결함여부판단수단으로 구성되어, 상기한 유온센서결함여부판단수단에 의해 유온센서의 점퍼결함 여부를 검출하여 유온센서의 동작에 이상이 발생하였을 경우, 유온센서 이상 진단신호를 정확하게 처리함으로써 오제어를 방지하여 변속클러치의 제어가 운전자의 운행감 저하를 발생하지 않도록 하는 효과가 있다.In the configuration, the automatic transmission is composed of an oil temperature sensor defect determining means for determining whether a jumper of the oil temperature sensor is detected by detecting an excessive increase or decrease of an abnormal oil temperature during a specific time of the transmission in the hydraulic control device. If abnormality occurs in the operation of the oil temperature sensor by detecting whether the jumper of the oil temperature sensor is detected by the fault determination means, by accurately processing the oil temperature sensor error diagnosis signal, the control of the shift clutch reduces the driver's feeling of operation. There is an effect that does not occur.

유온센서, 자동변속기 Oil temperature sensor, automatic transmission

Description

자동변속기의 유온센서 점퍼결함 검출방법{rationality check method of oil temperature sensor}Rationality check method of oil temperature sensor

도 1은 본 발명에 따른 자동변속기의 유온센서 점퍼결함 검출방법 개략적인 구성을 나타낸 블록도이고,1 is a block diagram showing a schematic configuration of a method for detecting a jumper fault of an oil temperature sensor of an automatic transmission according to the present invention;

도 2는 본 발명에 따른 자동변속기의 유온센서 점퍼결함 검출방법에 있어 변속기의 비정상적인 오일온도의 과도한 증감을 검출하여 유온센서의 점퍼결함 여부를 판단하는 유온센서결함여부판단수단을 나타낸 흐름도이다.Figure 2 is a flow chart showing the oil temperature sensor fault determination means for determining the jumper fault of the oil temperature sensor by detecting excessive increase or decrease of the abnormal oil temperature of the transmission in the oil temperature sensor jumper fault detection method of the automatic transmission according to the present invention.

<도면의 주요부분에 대한 설명> <Description of main parts of drawing>

10: 엔진회전수검출부 20: 변속기입력축회전수검출부10: engine speed detection unit 20: transmission input shaft speed detection unit

30: 유온검출부 40: 변속단검출부30: oil temperature detection unit 40: shift stage detection unit

50: 변속제어기(TCU; Transmission Control Unit)50: Transmission Control Unit (TCU)

60: 차속검출부 70:변속클러치60: vehicle speed detection unit 70: shift clutch

본 발명은 자동변속기의 유온센서 점퍼결함 검출방법에 관한 것으로, 더욱 상세하게는 차량용 변속기오일온도의 타당성을 검출하여 센서결함에 의한 변속기의 다른 고장 판단에 대한 정확성을 기하고, 각 운전영역에 따른 오일온도를 추정하여 센서 고장시 대체오일온도를 계산하여 변속충격을 저감시킬 수 있도록 한 것이다.The present invention relates to a method for detecting a jumper fault of an oil temperature sensor of an automatic transmission, and more particularly, to detect the validity of a transmission oil temperature for a vehicle to determine accuracy of another failure determination of a transmission due to a sensor defect, and according to each operation region. By estimating oil temperature, it is possible to reduce shift shock by calculating alternative oil temperature in case of sensor failure.

차량에는 다양한 센서가 엔진 및/또는 차량의 제어하는 엔진 작동 상태를 검출하여 엔진 개시직후 또는 엔진 유동체 압력이 급속하게 변동하는 여타의 과도(transient)상태 도중에 고장경보(false alarms)를 내도록 되어 있다.The vehicle is configured with various sensors to detect engine and / or engine operating conditions of the vehicle and to generate false alarms immediately after engine start or during other transient states in which the engine fluid pressure changes rapidly.

그리고 특정 엔진 또는 차량 작동 상태에 따라 다르지만, 특히 자동변속기가 장착된 차량은 오일온도 및 점도 변화특성에 영향을 받게 되므로 변속제어를 위한 오일을 유온센서로 측정하여 상기 결과에 근거로 변속유압제어에 사용하고 있다.Although it depends on the specific engine or vehicle operating condition, especially the vehicle equipped with automatic transmission is affected by the oil temperature and viscosity change characteristics, the oil for shift control is measured by the oil temperature sensor, I use it.

따라서 변속기에는 변속제어기(TCU; Transmission Control Unit)를 통해 변속기의 모든 동작 제어할 수 있도록 밸브바디(valve body)에 유로를 제어하는 솔레노이드밸브(solenoid valve)와 함께 유온센서가 구비되어 상기 유온센서가 자동변속기의 오일온도를 측정하여 솔레노이드에 가해지는 제어신호를 조정함으로써 오일의 온도 변화에 따른 유압 보정으로 원하는 변속감을 얻도록 되어 있다.Therefore, the transmission is equipped with a solenoid valve for controlling the flow path in the valve body to control all the operations of the transmission through a transmission control unit (TCU; the oil temperature sensor is provided with the oil temperature sensor By measuring the oil temperature of the automatic transmission and adjusting the control signal applied to the solenoid, it is possible to obtain a desired shift feeling by hydraulic correction according to the oil temperature change.

하지만 종래에는 변속기의 오일온도를 검출하는 유온센서의 결함판단이 전기적인 고장에만 국한되고 있어 상기 유온센서의 결함에 의한 오동작에도 운전자가 쉽게 대처할 수 없게 된다.However, in the related art, the fault determination of the oil temperature sensor detecting the oil temperature of the transmission is limited only to an electrical failure, so that the driver cannot easily cope with a malfunction caused by the defect of the oil temperature sensor.

또한 밸브내의 오일온도에 대한 타당성을 검출하는 기능이 없으므로, 상기 센서결함으로 인한 틀린 정보가 각종 자동 변속기의 고장을 판단하는 주변 조건으로 사용되면 다른 고장까지 오검출하는 문제로 지적되고 있다.In addition, since there is no function of detecting the validity of the oil temperature in the valve, it is pointed out that the wrong information due to the sensor defect is misdetected even when other information is used as an ambient condition for determining the failure of various automatic transmissions.

본 발명은 자동변속기가 유압제어장치에 있어서, 유온센서의 동작에 이상이 발생하였을 경우, 그 상황에 따라 유온센서의 이상 진단신호를 정확하게 처리함으로써 오제어를 방지하여 변속클러치의 제어가 운전자의 운행감 저하를 발생하지 않도록 하는 자동변속기 유온센서 점퍼결함검출방법을 제공함에 그 목적이 있다.According to the present invention, when an error occurs in the operation of the oil temperature sensor in the hydraulic control device in the hydraulic control device, the error diagnosis signal of the oil temperature sensor is correctly processed according to the situation to prevent erroneous control so that the control of the shift clutch is operated by the driver. An object of the present invention is to provide a method for detecting a jumper fault in an automatic transmission oil temperature sensor that prevents deterioration.

상기한 목적에 따라 본 발명에서는 차량 엔진회전수를 감지하여 그에 따른 전기신호를 출력하는 엔진회전수검출부(10)와, 구동회전수를 감지하여 그에 따른 전기신호를 출력하는 변속기입력축회전수검출부(20)와, 변속기 오일의 온도를 감지하여 그에 따른 전기신호를 출력하는 유온검출부(30)와, 상기 엔진회전수검출부(10)와 변속기입력축회전수검출부(20)로 부터 출력되는 신호를 입력받아 엔진의 상태를 판단하고, 상기 유온검출부(30)로 부터 출력되는 신호를 입력받아 유온센서의 상태를 판단하여 그에 따라 해당하는 변속클러치 제어신호를 생성하여 출력하는 TCU(50)와 상기 TCU(50)로부터 출력되는 신호에 따라 동작하여 해당하는 만큼의 유압을 통해 작동되어지는 변속클러치(70)가 구비되는 것에 있어서, 변속기의 특정시간동안 비정상적인 오일온도의 과도한 증감을 검출하여 유온센서의 점퍼결함 여부를 판단하는 유온센서결함여부판단수단으로 구성되고, 상기한 유온센서 결함여부판단에 의해 유온센서의 점퍼결함 여부를 검출하는 방법을 제공함에 그 특징이 있다.According to the above object, in the present invention, the engine speed detection unit 10 detects the vehicle engine speed and outputs the electric signal according to the above, and the transmission input shaft speed detection unit 20 detects the drive speed and outputs the electric signal accordingly. ), An oil temperature detector 30 for detecting a temperature of a transmission oil and outputting an electric signal according to the engine oil, and a signal output from the engine speed detector 10 and the transmission input shaft speed detector 20. TCU 50 and the TCU 50 to determine the state of the, and receives the signal output from the oil temperature detection unit 30 to determine the state of the oil temperature sensor to generate and output the corresponding shift clutch control signal accordingly. In the transmission clutch 70 is operated in accordance with the signal output from the hydraulic pressure corresponding to the operation, the abnormal oil on for a specific time of the transmission It is composed of an oil temperature sensor defect determination means for determining the jumper defect of the oil temperature sensor by detecting excessive increase or decrease of the oil temperature sensor, and provides a method for detecting a jumper defect of the oil temperature sensor by the oil temperature sensor defect determination. have.

이하, 첨부된 도면을 참고로 하여 본 발명을 바람직한 실시 예를 보다 구체적으로 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

첨부도면 도 1은 본 발명의 자동변속기의 유온센서 점퍼결함 검출방법 개략 적인 구성을 나타낸 블록도로서, 차량 엔진회전수를 감지하여 그에 따른 전기신호를 출력하는 엔진회전수검출부(10)와, 구동회전수를 감지하여 그에 따른 전기신호를 출력하는 변속기입력축회전수검출부(20)와, 변속기 오일의 온도를 감지하여 그에 따른 전기신호를 출력하는 유온검출부(30)와, 상기 엔진회전수검출부(10)와 변속기입력축회전수검출부(20)로부터 출력되는 신호를 입력받아 엔진의 상태를 판단하고, 상기 유온검출부(30)로 부터 출력되는 신호를 입력받아 유온센서의 상태를 판단하여 그에 따라 해당하는 변속클러치 제어신호를 생성하여 출력하는 TCU(50)와 상기 TCU(50)로부터 출력되는 신호에 따라 동작하여 해당하는 만큼의 유압을 통해 작동되어지는 변속클러치(70)로 구성되어 유온센서의 동작에 이상이 발생하였을 경우, 그 상황에 따라 유온센서 이상 진단신호를 정확하게 처리함으로써 오제어를 방지하여 변속클러치의 제어가 운전자의 운행감 저하를 발생하지 않도록 하였다.1 is a block diagram showing a schematic configuration of an oil temperature sensor jumper fault detection method of an automatic transmission according to the present invention. The engine speed detection unit 10 detects a vehicle engine speed and outputs an electric signal according to the present invention. Transmission input shaft rotation speed detection unit 20 for detecting the total number and outputting the electrical signal according to the above, Oil temperature detection unit 30 for detecting the temperature of the transmission oil and outputs the electrical signal according to the engine speed detection unit 10 And judge the state of the engine by receiving the signal output from the transmission input shaft rotation speed detection unit 20, and determine the state of the oil temperature sensor by receiving the signal output from the oil temperature detection unit 30 and accordingly corresponding shift clutch The shift clutch operated by the hydraulic pressure corresponding to the TCU 50 generating and outputting the control signal and the signal output from the TCU 50, 70), if an abnormality occurs in the operation of the oil temperature sensor, according to the situation, by accurately processing the oil temperature sensor abnormality diagnosis signal to prevent erroneous control so that the control of the shift clutch does not cause the driver's feeling of driving to fall.

상기 엔진회전수검출부(10)는 자동차 엔진회전수를 감지하여 그에 따른 전기신호를 출력하고, 변속기입력축회전수검출부(20)는 변속기 입력축 구동회전수를 감지하여 그에 따른 전기신호를 출력한다.The engine speed detection unit 10 detects the vehicle engine speed and outputs an electric signal according thereto, and the transmission input shaft speed detection unit 20 detects a transmission input shaft drive rotation speed and outputs the electric signal accordingly.

그리고, 유온검출부(30)는 자동변속기 오일온도를 감지하여 그에 따른 전기신호를 출력하고, TCU(50)는 상기 엔진회전수검출부(10)와 변속기입력축회전수검출부(20)로부터 출력되는 신호를 입력받아 엔진의 상태를 판단하고, 상기 유온검출부(30)로부터 출력되는 신호를 입력받아 유온센서의 상태를 판단하여 그에 따라 해당하는 변속클러치 제어신호를 생성하여 출력한다.In addition, the oil temperature detection unit 30 detects an automatic transmission oil temperature and outputs an electric signal according thereto, and the TCU 50 outputs a signal output from the engine speed detection unit 10 and the transmission input shaft revolution detection unit 20. It receives the input to determine the state of the engine, receives the signal output from the oil temperature detection unit 30 to determine the state of the oil temperature sensor to generate and output the corresponding shift clutch control signal accordingly.

변속클러치(70)는 상기 TCU(50)로부터 출력되는 신호에 따라 동작하여 해당 하는 만큼의 유압에 따라 작동된다.The shift clutch 70 operates according to the signal output from the TCU 50 to operate according to the corresponding hydraulic pressure.

상기 TCU(50)에는 변속기의 변속상태를 감지하는 변속단검출부(40)와 차속을 검출하는 차속검출부(60)의 신호를 함께 입력받도록 되어 있다.The TCU 50 is configured to receive a signal from a shift stage detecting unit 40 for detecting a shift state of a transmission and a vehicle speed detecting unit 60 for detecting a vehicle speed.

본 발명에서는 센서신호의 과도한 증감을 검출하여 이상 오일온도 및 각 운전영역에 따른 오일온도를 추정하여 센서결함판단 및 센서결함시 대체온도로 사용한다.In the present invention, by detecting the excessive increase and decrease of the sensor signal to estimate the abnormal oil temperature and the oil temperature according to each operating region is used as a sensor fault determination and a replacement temperature when the sensor fault.

그리고, 도 2는 본 발명이 적용된 변속기의 단위시간당 순간적인 온도변화에 따른 비정상적인 오일온도의 과도한 증감을 검출하여 유온센서의 점퍼 결함여부를 판단하는 흐름도(ATF Jump monitering flow chart)이다.And, Figure 2 is a flow chart (ATF Jump monitering flow chart) to determine whether the jumper defects of the oil temperature sensor by detecting excessive increase or decrease of the abnormal oil temperature according to the instantaneous temperature change per unit time of the transmission to which the present invention is applied.

*도시된 바와 같이 변속기의 단위시간당 순간적인 온도변화에 따른 유온센서점퍼 결함 판단수단을 이용한 자동변속기의 유온센서 점퍼결함 검출방법은, 유온센서결함검출 기능중 점퍼결함검출기능을 해제/가능 여부 표시(suw_UwCgtPlausi_On)(bit 0 = 1)하는 단계(S10)와, 상기 단계(S10)에서 점퍼결함검출기능(bit 0 = 0)해제를 선택하면 종료단계로 이동하고 점퍼결함검출기능(bit 0 = 1)가능을 선택하면 시동완료 여부를 확인하기 위해 이동하는 단계(S20)와. 상기 단계(S20)에서 시동 미완료 되었다면 시동완료 여부를 확인하는 단계로 돌아가고 시동 완료되었다면 차량전원과 차량전원임계전압(10V)을 비교하기 위해 이동하는 단계(S30)와, 상기 단계(S30)에서 차량전원이 차량전원임계전압 보다 작으면 차량전원과 차량전원임계전압을 비교하는 단계로 이동하고, 차량전원이 차량전원임계전압보다 크면 일정시간당 오일온도변화량을 비교검토하기위해 현재오일온도를 점퍼결함오일온도초기치로 입력받는 단계(S40)로 구성된다.* As shown, the oil temperature sensor jumper fault detection method of the automatic transmission using the oil temperature sensor jumper fault determination means according to the instantaneous temperature change per unit time of the transmission, indicating whether or not the jumper fault detection function of the oil temperature sensor fault detection function (suw_UwCgtPlausi_On) (bit 0 = 1) and if the jumper fault detection function (bit 0 = 0) is selected to be canceled in step S10, the process moves to the end step and the jumper fault detection function (bit 0 = 1) If you select Yes and move to check whether the startup is complete (S20) and. If the startup is not completed in step S20, return to the step of checking whether the startup is completed, and if the startup is completed, moving to compare the vehicle power and the vehicle power threshold voltage 10V (S30) and the vehicle in step S30. If the power supply is less than the vehicle power threshold voltage, go to the step of comparing the vehicle power supply and the vehicle power threshold voltage.If the vehicle power supply is greater than the vehicle power threshold voltage, the current oil temperature is jumpered to compare and compare the oil temperature change over a certain time. It is configured to receive the temperature initial value (S40).

또한, 점프모니터링 타이머와 점퍼결함판단시간을 비교 검출하는 단계(S50)와, 점프모니터링 타이머가 점퍼결함판단시간보다 작으면 온도변화율 검출방식을 통한 유온센서결함 판단용 점퍼결함최고온도계측치(Cgt_UwCgtJmp_Peak)로 이동하여 그때의 변속기오일온도을 입력받아 점프모니터링 타이머와 점퍼결함판단시간 비교 단계로 되돌아가고, 점프모니터링 타이머가 점퍼결함판단시간보다 큰경우에는 점퍼결함최고온도계측치에서 점퍼결함오일온도초기치를 뺀값에 대하여 점퍼결함판단임계오일온도변화량을 비교하는 단계(S60)와,In addition, comparing and detecting the jump monitoring timer and the jumper fault determination time (S50), and if the jump monitoring timer is less than the jumper fault determination time, the jumper fault maximum temperature measurement value (Cgt_UwCgtJmp_Peak) for judging the oil temperature sensor fault by the temperature change rate detection method. Move to the jump monitoring timer and jumper fault determination time comparison step.If the jump monitoring timer is larger than the jumper fault determination time, the jumper fault temperature measurement value is subtracted from the jumper fault oil temperature initial value. Comparing the jumper defect determination critical oil temperature change with respect to (S60),

상기 단계에서 점퍼결함최고온도계측치와 점퍼결함오일온도초기치의 차가 점퍼결함판단임계오일온도변화량 보다 작으면 차량전원과 차량전원임계전압(10V)을 비교하는 단계로 돌아가고, 점퍼결함최고온도계측치와 점퍼결함오일온도초기치의 차가 점퍼결함판단임계오일온도변화량보다 클 경우에는 점퍼결함확인 타이머 증가로 이동하는 단계(S70)와,If the difference between the jumper fault maximum temperature measurement value and the jumper fault oil temperature initial value is smaller than the jumper fault determination critical oil temperature change in the above step, the process returns to the step of comparing the vehicle power and the vehicle power threshold voltage (10V), and the jumper fault maximum temperature measurement value and the jumper. If the difference between the initial value of the faulty oil temperature is greater than the jumper fault determination critical oil temperature change step (S70),

점퍼결함최고온도계측치와 점퍼결함오일온도초기치의 차를 점퍼결함판단임계오일온도변화량 (10℃)을 비교하는 단계(S80)와, 상기 단계에서 점퍼결함최고온도계측치와 점퍼결함오일온도초기치의 차가 점퍼결함판단임계오일온도변화량 보다 작으면 차량전원과 차량전원임계전압(10V)을 비교하는 단계로 돌아가고, 점퍼결함최고온도계측치와 점퍼결함오일온도초기치의 차가 점퍼결함판단임계오일온도변화량보다 크면 점퍼결합확인타이머와 점퍼결함확인시간을 비교하는 단계(S90)와,Comparing the difference between the jumper defect maximum temperature measurement value and the jumper defect oil temperature initial value (10 ° C.) of the jumper defect determination threshold temperature (S80), and the difference between the jumper defect maximum temperature measurement value and the jumper defect oil temperature initial value If the jumper fault determination threshold oil temperature change is less than the return to the step of comparing the vehicle power and the vehicle power threshold voltage (10V), and the difference between the jumper fault determination temperature and the jumper fault determination oil temperature initial value is greater than the jumper fault determination threshold oil temperature change jumper Comparing the coupling check timer and the jumper fault check time (S90),

점퍼결함확인타이머가 온도변화율 검출방식을 통한 유온센서결함 판단용 결 함확인시간(3sec) 보다 작으면 점퍼결함확인 타이머 증가단계로 돌아가고, 점퍼결함확인타이머가 온도변화율 검출방식을 통한 유온센서결함 판단용 결함확인시간보다 크면 점퍼결함을 판단하는 단계(S100)로 이동한 후 종료하도록 구성된다.If the jumper fault check timer is less than 3sec for the oil temperature sensor fault determination using the temperature change rate detection method, the jumper fault check timer returns to the step of increasing, and the jumper fault check timer determines the oil temperature sensor fault through the temperature change rate detection method. If it is greater than the defect check time is configured to go to step (S100) to determine the jumper defects is configured to end.

이상에서와 같이 본 발명은 변속클러치 제어시 고려하는 오일온도를 나타내는 유온변수(Oil_temp)를 확인하고, 그 값이 설정상태이면, 시동이 꺼진 후에도 정보를 기억시키고, 상기 유온변수의 값은 변속클러치 작동영역 진입시의 유온 설정상태 및 해제상태로 기억하여 극심한 온도환경 변화가 예상되는 한랭지에서 변속클러치 제어에 오동작이 발생하는 것을 방지할 수 있다.As described above, the present invention checks the oil temperature variable (Oil_temp) indicating the oil temperature to be considered in shift clutch control, and if the value is set, the information is stored even after the start is turned off, and the value of the oil temperature variable is the shift clutch The oil temperature setting state and release state at the time of entering the operating area can be stored to prevent malfunctions in the shift clutch control in cold regions where extreme temperature environment changes are expected.

따라서, 한랭지에서 자동변속기의 유압을 제어하는 것에 있어서 유온센서의 점퍼결함 등의 이유로 인해 동작에 이상이 발생하였을 경우, 그 상황에 따라 유온센서 이상 진단신호를 정확하게 처리함으로써 오제어를 방지하여 변속클러치의 제어가 운전자의 운행감 저하를 발생하지 않도록 하는 등의 효과가 있게 된다.Therefore, in case of abnormality in operation due to the jumper fault of the oil temperature sensor in controlling the hydraulic pressure of the automatic transmission in the cold region, the shift clutch is prevented by accurately processing the oil temperature sensor error diagnosis signal according to the situation. This control is effective in preventing the driver's driving feeling from being lowered.

Claims (1)

자동변속기의 유압제어장치 유온센서 결함 검출방법에 있어서,In the hydraulic control device oil temperature sensor defect detection method of the automatic transmission, 유온센서결함검출 기능중 점퍼결함검출기능을 해제/가능 여부 표시(bit 0 = 1)하는 단계(S10)와,Step (S10) of indicating whether the jumper fault detection function of the oil temperature sensor fault detection function is released / enabled (bit 0 = 1), 상기 단계(S10)에서 점퍼결함검출기능(bit 0 = 0)해제를 선택하면 종료단계로 이동하고 점퍼결함검출기능(bit 0 = 1)을 선택하면 시동완료 여부를 확인하기 위해 이동하는 단계(S20)와.In step S10, if the jumper fault detection function (bit 0 = 0) is selected and the jumper is stopped, the jumper fault detection function (bit 0 = 1) is selected. )Wow. 상기 단계(S20)에서 시동 미완료 되었다면 시동완료 여부를 확인하는 단계로 돌아가고 시동 완료되었다면 차량전원과 차량전원임계전압(10V)을 비교하기 위해 이동하는 단계(S30)와, In step S20, if the startup is not completed, returning to the step of checking whether the startup is completed, and if the startup is completed, moving to compare the vehicle power and the vehicle power threshold voltage (10V) (S30), 상기 단계(S30)에서 차량전원이 차량전원임계전압 보다 작으면 차량전원과 차량전원임계전압을 비교하는 단계로 이동하고, 차량전원이 차량전원임계전압보다 크면 일정시간당 오일온도변화량을 비교검토 하기 위해 현재오일온도를 점퍼결함오일온도초기치로 입력받는 단계(S40)와,If the vehicle power is less than the vehicle power threshold voltage in the step (S30), go to the step of comparing the vehicle power and the vehicle power threshold voltage, and if the vehicle power is greater than the vehicle power threshold voltage to compare the oil temperature change per predetermined time Receiving the current oil temperature as a jumper-defective oil temperature initial value (S40); 점프모니터링 타이머와 점퍼결함판단시간을 비교 검출하는 단계(S50)와,Comparing and detecting a jump monitoring timer and a jumper fault determination time (S50); 점프모니터링 타이머가 점퍼결함판단시간보다 작으면 온도변화율 검출방식을 통한 유온센서결함 판단용 점퍼결함최고온도계측치로 이동하여 그때의 변속기오일온도을 입력받아 점프모니터링 타이머와 점퍼결함판단시간 비교 단계로 되돌아가고, 점프모니터링 타이머가 점퍼결함판단시간보다 큰 경우에는 점퍼결함최고온도 계측치에서 점퍼결함오일온도초기치를 뺀 값에 대하여 점퍼결함판단임계오일온도변화량을 비교하는 단계(S60)와,If the jump monitoring timer is shorter than the jumper fault determination time, it moves to the jumper fault maximum temperature measurement value for oil temperature sensor fault determination using the temperature change rate detection method, and receives the transmission oil temperature at that time, and returns to the comparison step of the jump monitoring timer and jumper fault determination time. If the jump monitoring timer is greater than the jumper fault determination time, comparing the jumper fault determination critical oil temperature change with a value obtained by subtracting the jumper fault oil temperature initial value from the jumper fault maximum temperature measurement value (S60); 상기 단계에서 점퍼결함최고온도계측치와 점퍼결함오일온도초기치의 차가 점퍼결함판단임계오일온도변화량 보다 작으면 차량전원과 차량전원임계전압(10V)을 비교하는 단계로 돌아가고, 점퍼결함최고온도계측치와 점퍼결함오일온도초기치의 차가 점퍼결함판단임계오일온도변화량보다 크면 점퍼결함확인 타이머를 증가시키는 단계(S70)와,If the difference between the jumper fault maximum temperature measurement value and the jumper fault oil temperature initial value is smaller than the jumper fault determination critical oil temperature change in the above step, the process returns to the step of comparing the vehicle power and the vehicle power threshold voltage (10V), and the jumper fault maximum temperature measurement value and the jumper. If the difference between the initial value of the faulty oil temperature is greater than the jumper fault determination threshold oil temperature change, increasing the jumper fault check timer (S70); 점퍼결함최고온도계측치와 점퍼결함오일온도초기치의 차를 점퍼결함판단임계오일온도변화량 (10℃)을 비교하는 단계(S80)와,Comparing the difference between the jumper fault maximum temperature measurement value and the jumper fault oil temperature initial value (10 ° C.) of the jumper fault determination critical oil temperature (S80), 상기 단계에서 점퍼결함최고온도계측치와 점퍼결함오일온도초기치의 차가 점퍼결함판단임계오일온도변화량 보다 작으면 차량전원과 차량전원임계전압(10V)을 비교하는 단계로 돌아가고, 점퍼결함최고온도계측치와 점퍼결함오일온도초기치의 차가 점퍼결함판단임계오일온도변화량보다 크면 점퍼결합확인타이머와 점퍼결함확인시간을 비교하는 단계(S90)와,If the difference between the jumper fault maximum temperature measurement value and the jumper fault oil temperature initial value is smaller than the jumper fault determination critical oil temperature change in the above step, the process returns to the step of comparing the vehicle power and the vehicle power threshold voltage (10V), and the jumper fault maximum temperature measurement value and the jumper. If the difference between the initial value of the faulty oil temperature is greater than the jumper fault determination threshold oil temperature change, comparing the jumper coupling check timer and the jumper fault checking time (S90); 점퍼결함확인타이머가 온도변화율 검출방식을 통한 유온센서결함 판단용 결함확인시간(3sec) 보다 작으면 점퍼결함확인 타이머 증가단계로 돌아가고, 점퍼결함확인타이머가 온도변화율 검출방식을 통한 유온센서결함 판단용 결함확인시간보다 크면 점퍼결함를 판단하는 단계(S100)로 이동한 후 종료하도록 구성된 단위시간당 순간적인 온도변화에 따른 유온센서 점퍼결함 판단단계를 이용한 자동변속기의 유온센서 점퍼결함 검출방법.If the jumper fault check timer is less than the fault check time (3sec) for determining the oil temperature sensor fault using the temperature change rate detection method, the jumper fault check timer returns to the step of increasing the jumper fault check timer and the jumper fault check timer is used to determine the oil temperature sensor fault through the temperature change rate detection method. The oil temperature sensor jumper fault detection method of the automatic transmission using the oil temperature sensor jumper fault determination step according to the instantaneous temperature change per unit time configured to move to the step (S100) to determine the jumper fault if the fault check time is greater than.
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