KR20020053103A - A diagnosis method of the variable force solenoid valve - Google Patents

A diagnosis method of the variable force solenoid valve Download PDF

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KR20020053103A
KR20020053103A KR1020000081868A KR20000081868A KR20020053103A KR 20020053103 A KR20020053103 A KR 20020053103A KR 1020000081868 A KR1020000081868 A KR 1020000081868A KR 20000081868 A KR20000081868 A KR 20000081868A KR 20020053103 A KR20020053103 A KR 20020053103A
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South Korea
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counter value
solenoid valve
disconnection
voltage level
variable force
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KR1020000081868A
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Korean (ko)
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KR100405692B1 (en
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권형근
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이계안
현대자동차주식회사
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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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S251/00—Valves and valve actuation

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

PURPOSE: A fault diagnosis method is provided to diagnose faults of solenoid valve of motor vehicle transmission by using the change of state of frequency characteristics. CONSTITUTION: A fault diagnosis method comprises a step(S21) of detecting a voltage level of a feedback signal output terminal of a variable force solenoid valve; a step(S22) of judging whether the detected voltage level is at "on" state; a step(S23,S24) of increasing a short counter value by one, making a disconnection counter value zero, and judging the short counter value, if the detected voltage level is at "on" state; a step(S25) of generating a short fault code if the short counter value is greater than a first reference value; a step(S26,S27) of increasing the disconnection counter value by one, making the short counter value zero, and judging the disconnection counter value, if the detected voltage level is at "off" state; and a step(S28) of generating a disconnection fault code if the disconnection counter value is greater than a second reference value.

Description

가변력 솔레노이드 밸브의 고장 진단방법{A DIAGNOSIS METHOD OF THE VARIABLE FORCE SOLENOID VALVE}A DIAGNOSIS METHOD OF THE VARIABLE FORCE SOLENOID VALVE

이 발명은 자동차에 관한 것으로서, 특히, 자동차의 자동변속기 또는 무단 변속기 등에 사용되는 솔레노이드 밸브의 고장 진단방법에 관한 것이다.The present invention relates to a motor vehicle, and more particularly, to a method for diagnosing a failure of a solenoid valve used in an automatic transmission or a continuously variable transmission of an automobile.

일반적으로, 자동변속기 또는 무단 변속기에 사용되는 솔레노이드 밸브의 주요 형태로는 온/오프 타입, PWM(pulse width modulation)타입 및 가변력 타입(VFS: variable force solenoid valve) 등이 있다.In general, the main types of solenoid valves used in automatic transmission or continuously variable transmission include on / off type, pulse width modulation (PWM) type and variable force solenoid valve (VFS).

통상적으로 온/오프 타입 및 PWM 타입의 솔레노이드 밸브는 현재의 출력상태를 변속제어유닛이 일정시간 감지하여 고장유무를 판단한다.Typically, the solenoid valve of the on / off type and the PWM type detects the current output state by the shift control unit for a predetermined time and determines whether there is a failure.

변속제어유닛에서 온 신호를 출력할 때 피드백된 신호가 오프로 일정시간 유지되면, 단선으로 판단한다.If the feedback signal is kept off for a certain time when outputting the on signal from the shift control unit, it is determined as disconnected.

또한, 변속제어유닛에서 오프 신호를 출력할 때 피드백된 신호가 온으로 일정시간 유지되면, 쇼트 상태로 판단한다.In addition, if the feedback signal is kept on for a predetermined time when the shift control unit outputs the off signal, it is determined as a short state.

이러한 판단 상태에 따라 변속제어유닛은 판단 상태에 해당하는 고장코드를 발생하여 고장 상태를 알리게 된다.According to this determination state, the shift control unit generates a failure code corresponding to the determination state to inform the failure state.

그러나, 가변력 타입의 솔레노이드 밸브는 변속제어유닛의 출력 듀티에 비례하는 전류의 양으로 솔레노이드 밸브를 구동하는 방식이므로 변속제어유닛의 출력상태와 동일한 피드백 신호를 감지할 수 없어 고장을 진단할 방법이 없는 단점이 있다.However, since the solenoid valve of the variable force type drives the solenoid valve with an amount of current proportional to the output duty of the shift control unit, it is impossible to detect a feedback signal that is identical to the output state of the shift control unit, thereby diagnosing a failure. There are no drawbacks.

본 발명이 이루고자 하는 기술적 과제는 종래의 단점을 해결하고자 하는 것으로, 온/오프가 반복적으로 출력되는 주파수 특성 상태의 변화 여부에 따라 고장을 진단하는 가변력 솔레노이드 밸브의 고장 진단방법을 제공하는 것이다.The technical problem to be achieved by the present invention is to solve the disadvantages of the prior art, to provide a failure diagnosis method of a variable force solenoid valve for diagnosing the failure according to the change in the frequency characteristic state is repeatedly output on / off.

도1은 이 발명의 실시예에 따른 가변력 솔레노이드 밸브의 고장 진단장치의 블록 구성도이다.1 is a block diagram of a failure diagnosis apparatus for a variable force solenoid valve according to an exemplary embodiment of the present invention.

도2는 이 발명의 실시예에 따른 가변력 솔레노이드 밸브의 고장 진단방법의 동작 흐름도이다.2 is an operation flowchart of a failure diagnosis method of a variable force solenoid valve according to an exemplary embodiment of the present invention.

도3은 이 발명의 실시예에 따른 가변력 솔레노이드 밸브의 고장 진단장치의 각부 파형도이다.3 is a waveform diagram of each part of a failure diagnosis apparatus for a variable force solenoid valve according to an exemplary embodiment of the present invention.

이러한 과제를 해결하기 위한 본 발명의 특징에 따른 가변력 솔레노이드 밸브의 고장 진단방법은,The fault diagnosis method of the variable force solenoid valve according to the characteristics of the present invention for solving this problem,

가변력 솔레노이드 밸브의 피드백 신호 출력단자의 전압 레벨을 검출하는 단계;Detecting a voltage level of a feedback signal output terminal of the variable force solenoid valve;

검출된 전압 레벨이 온 상태인지 판단하는 단계;Determining whether the detected voltage level is on;

검출된 전압 레벨이 온 상태이면, 쇼트 카운터값을 하나 증가시키고, 단선 카운터값은 제로로 하고, 쇼트 카운터값을 판단하는 단계;If the detected voltage level is on, increasing the short counter value by one, making the disconnection counter value zero, and determining the short counter value;

쇼트 카운터값이 제1 기준값 이상이면, 쇼트 고장코드를 발생하는 단계;Generating a short fault code if the short counter value is greater than or equal to the first reference value;

검출된 전압 레벨이 오프 상태이면, 단선 카운터값을 하나 증가시키고, 쇼트 카운터값은 제로로 하고, 단선 카운터값을 판단하는 단계;If the detected voltage level is off, increasing the disconnection counter value by one, setting the short counter value to zero, and determining the disconnection counter value;

단선 카운터값이 제2 기준값 이상이면, 단선 고장코드를 발생하는 단계를 포함한다.If the disconnection counter value is greater than or equal to the second reference value, generating the disconnection fault code.

그러면, 통상의 지식을 지닌자가 본 발명을 실시할 수 있도록 첨부된 도면을 참조로 하여 본 발명의 실시예를 상세히 설명하기로 한다.Then, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can practice the present invention.

도1은 이 발명의 실시예에 따른 가변력 솔레노이드 밸브의 고장 진단장치의 구성도이다.1 is a configuration diagram of a failure diagnosis apparatus for a variable force solenoid valve according to an exemplary embodiment of the present invention.

도1에 도시된 바와 같이, 이 발명의 실시예에 따른 가변력 솔레노이드 밸브의 고장 진단장치는,As shown in Figure 1, the failure diagnosis apparatus of the variable force solenoid valve according to an embodiment of the present invention,

가변력 솔레노이드 밸브를 구동하기 위한 제어신호를 출력하며, 상기 가변력 솔레노이드 밸브의 고장 상태를 판단하는 변속제어유닛;A shift control unit outputting a control signal for driving the variable force solenoid valve and determining a failure state of the variable force solenoid valve;

상기 변속제어유닛의 제어신호를 전류신호로 변환하여 가변력 솔레노이드 밸브로 출력하고, 현재의 상태를 에스티 단자(ST) 및 낸드 게이트(40)를 통해 변속제어유닛으로 피드백하는 가변력 솔레노이드 밸브 구동회로를 포함한다.The variable force solenoid valve driving circuit converts the control signal of the shift control unit into a current signal and outputs it to the variable force solenoid valve, and feeds the current state back to the shift control unit through the Estee terminal ST and the NAND gate 40. It includes.

그러면, 이러한 구성을 가진 이 발명의 실시예에 따른 가변력 솔레노이드 밸브의 고장 진단장치 및 진단방법에 관하여 첨부된 도면을 참조로 하여 상세히 설명하면 다음과 같다.Then, with reference to the accompanying drawings with respect to the failure diagnosis device and diagnostic method of the variable-pressure solenoid valve according to an embodiment of the present invention having such a configuration as follows.

도2는 이 발명의 실시예에 따른 가변력 솔레노이드 밸브의 고장 진단방법의 동작 흐름도이다.2 is an operation flowchart of a failure diagnosis method of a variable force solenoid valve according to an exemplary embodiment of the present invention.

도3은 이 발명의 실시예에 따른 가변력 솔레노이드 밸브의 고장 진단장치의 각부 파형도이다.3 is a waveform diagram of each part of a failure diagnosis apparatus for a variable force solenoid valve according to an exemplary embodiment of the present invention.

먼저, 사용자에 의해 전원이 인가되면, 이 발명의 실시예에 따른 가변력 솔레노이드 밸브의 고장 진단장치의 동작이 시작된다.First, when the power is applied by the user, the operation of the failure diagnosis apparatus of the variable force solenoid valve according to the embodiment of the present invention is started.

동작이 시작되면, 변속제어유닛(10)은 가변력 솔레노이드 밸브(30)를 제어하기 위한 펄스폭 변조신호를 출력한다. 이때, 변속제어유닛(10)의 출력신호는 도3에 도시되어 있으며, 펄스폭 변조 신호이다.When the operation starts, the shift control unit 10 outputs a pulse width modulation signal for controlling the variable force solenoid valve 30. At this time, the output signal of the shift control unit 10 is shown in Fig. 3, which is a pulse width modulation signal.

그러면, 가변력 솔레노이드 밸브 구동회로(20)는 입력된 신호를 전류량 신호로 변환하여 출력한다.Then, the variable force solenoid valve driving circuit 20 converts the input signal into a current amount signal and outputs it.

그러면, 가변력 솔레노이드 밸브(30)가 전류량 신호에 대응하여 동작하게 된다.Then, the variable force solenoid valve 30 is operated in response to the current amount signal.

한편, 가변력 솔레노이드 밸브 구동회로(20)는 가변력 솔레노이드 밸브(30)에 출력하는 신호를 피드백하여 에스티 단자(ST)로 출력하는데, 이 피드백 신호는 가변력 솔레노이드 밸브(30)가 고장나지 않았을 때는 도3의 가변력 솔레노이드 밸브 구동회로(20)의 출력신호와 같게 된다.On the other hand, the variable force solenoid valve driving circuit 20 feeds back a signal output to the variable force solenoid valve 30 to the Estee terminal (ST), this feedback signal is a variable force solenoid valve 30 is not broken Is equal to the output signal of the variable force solenoid valve drive circuit 20 of FIG.

이후, 전저제어유닛(10)은 에스티 단자를 통해 출력되는 신호를 낸드게이트(40)를 통해 입력받아 가변력 솔레노이드 밸브(30)의 고장유무를 판단하게 된다.Thereafter, the electric power control unit 10 receives a signal output through the Estee terminal through the NAND gate 40 to determine whether or not the variable force solenoid valve 30 is broken.

먼저, 변속제어유닛(10)은 가변력 솔레노이드 밸브(30)의 피드백 신호에서 전압 레벨을 체크한다(S21).First, the shift control unit 10 checks the voltage level in the feedback signal of the variable force solenoid valve 30 (S21).

다음, 변속제어유닛(10)은 검출된 전압 레벨이 온 상태인지를 판단한다(S22).Next, the shift control unit 10 determines whether the detected voltage level is on (S22).

검출된 전압 레벨이 온 상태이면, 변속제어유닛(10)은 내부의 쇼트 카운터값을 하나 증가시키고, 단선 카운터값은 제로로 한후(S23), 쇼트 카운터값을 판단한다(S24).If the detected voltage level is on, the shift control unit 10 increases the internal short counter value by one, and the disconnection counter value is zero (S23), and then the short counter value is determined (S24).

쇼트 카운터값이 500 이상이면, 변속제어유닛(10)은 쇼트 고장코드를 발생하고(S25), 500이하이면, 다시 처음(S21)으로 리턴한다.If the short counter value is 500 or more, the shift control unit 10 generates a short failure code (S25), and if it is 500 or less, it returns to the beginning (S21).

한편, 검출된 전압 레벨이 오프 상태이면, 변속제어유닛(10)은 단선 카운터값을 하나 증가시키고, 쇼트 카운터값은 제로로 한후(S26), 단선 카운터값을 판단한다(S27).On the other hand, if the detected voltage level is in the off state, the shift control unit 10 increases the disconnection counter value by one and sets the short counter value to zero (S26), and then determines the disconnection counter value (S27).

단선 카운터값이 500 이상이면, 변속제어유닛(10)은 단선 고장코드를 발생하고(S28), 500이하이면, 다시 처음(S21)으로 리턴한다.If the disconnection counter value is 500 or more, the shift control unit 10 generates a disconnection fault code (S28), and if it is 500 or less, it returns to the beginning (S21).

상기한 과정(S21~S28)은 10msec 단위로 반복이 되며, 500회는 5초가 된다.The process (S21 ~ S28) is repeated in 10msec units, 500 times is 5 seconds.

따라서, 약 5초간 단선이나 쇼트 상태가 지속되면, 변속제어유닛(10)이 오류 코드를 발생하게 된다.Therefore, if the disconnection or the short state continues for about 5 seconds, the shift control unit 10 generates an error code.

이러한 고장 상태를 판단하는 시간은 차종이나 여러 조건에 따라 적절히 선택하며, 그에 따라 카운터값만 조정해주면 된다.The time for determining such a failure state is appropriately selected according to the vehicle type or various conditions, and only the counter value needs to be adjusted accordingly.

이상에서와 같이, 이 발명의 실시예에서, 온/오프가 반복적으로 출력되는 주파수 특성 상태의 변화를 이용하여 고장을 진단함으로써 이에 즉각 대응할 수 있도록 하는 가변력 솔레노이드 밸브의 고장 진단방법을 제공할 수 있다.As described above, in the embodiment of the present invention, it is possible to provide a method for diagnosing a failure of a variable force solenoid valve so as to immediately respond to the failure by diagnosing a failure by using a change in the frequency characteristic state in which on / off is repeatedly output. have.

Claims (2)

가변력 솔레노이드 밸브의 피드백 신호 출력단자의 전압 레벨을 검출하는 단계;Detecting a voltage level of a feedback signal output terminal of the variable force solenoid valve; 검출된 전압 레벨이 온 상태인지 판단하는 단계;Determining whether the detected voltage level is on; 검출된 전압 레벨이 온 상태이면, 쇼트 카운터값을 하나 증가시키고, 단선 카운터값은 제로로 하고, 쇼트 카운터값을 판단하는 단계;If the detected voltage level is on, increasing the short counter value by one, making the disconnection counter value zero, and determining the short counter value; 쇼트 카운터값이 제1 기준값 이상이면, 쇼트 고장코드를 발생하는 단계;Generating a short fault code if the short counter value is greater than or equal to the first reference value; 검출된 전압 레벨이 오프 상태이면, 단선 카운터값을 하나 증가시키고, 쇼트 카운터값은 제로로 하고, 단선 카운터값을 판단하는 단계;If the detected voltage level is off, increasing the disconnection counter value by one, setting the short counter value to zero, and determining the disconnection counter value; 단선 카운터값이 제2 기준값 이상이면, 단선 고장코드를 발생하는 단계를 포함하는 가변력 솔레노이드 밸브의 고장 진단방법.If the disconnection counter value is greater than or equal to the second reference value, generating a disconnection fault code. 제1항에 있어서,The method of claim 1, 검출된 전압 레벨이 온 상태인지 판단하는 것은 10msec 단위로 이루어지며, 상기 제1, 제2 기준값은 500인 것을 특징으로 하는 가변력 솔레노이드 밸브의 고장 진단방법.The determining of whether the detected voltage level is in an on state is performed in units of 10 msec, and the first and second reference values are 500.
KR10-2000-0081868A 2000-12-26 2000-12-26 A diagnosis method of the variable force solenoid valve KR100405692B1 (en)

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CN107884659A (en) * 2016-09-30 2018-04-06 纳博特斯克有限公司 Broken thread detector
KR20180036546A (en) * 2016-09-30 2018-04-09 나부테스코 가부시키가이샤 Disconnection detection apparatus
KR20180125080A (en) * 2017-05-11 2018-11-22 콘티넨탈 오토모티브 시스템 주식회사 Solenoid stuck diagnosis apparatus for transmission in vehicle and method thereof
CN113029556A (en) * 2021-05-27 2021-06-25 盛瑞传动股份有限公司 Acquisition method of frozen frame data, electronic equipment and storage medium thereof
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