KR100302804B1 - Method for controlling shift of automatic transmission - Google Patents

Method for controlling shift of automatic transmission Download PDF

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Publication number
KR100302804B1
KR100302804B1 KR1019970069850A KR19970069850A KR100302804B1 KR 100302804 B1 KR100302804 B1 KR 100302804B1 KR 1019970069850 A KR1019970069850 A KR 1019970069850A KR 19970069850 A KR19970069850 A KR 19970069850A KR 100302804 B1 KR100302804 B1 KR 100302804B1
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South Korea
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outputting
shift
speed
vehicle
sensing unit
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KR1019970069850A
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Korean (ko)
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KR19990050716A (en
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신명신
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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
    • 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
    • F16H61/04—Smoothing ratio shift
    • 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
    • F16H59/14—Inputs being a function of torque or torque demand
    • F16H59/18—Inputs being a function of torque or torque demand dependent on the position of the accelerator pedal
    • F16H2059/183—Rate of change of accelerator position, i.e. pedal or throttle change gradient
    • 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
    • F16H61/04—Smoothing ratio shift
    • F16H2061/0444—Smoothing ratio shift during fast shifting over two gearsteps, e.g. jumping from fourth to second gear
    • 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
    • F16H2306/00—Shifting
    • F16H2306/14—Skipping gear shift

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

Abstract

PURPOSE: A method for controlling shift of an automatic transmission is provided to improve acceleration performance and to improve response of a vehicle. CONSTITUTION: A shift controller of an automatic transmission comprises a vehicle traveling state sensing unit(10) outputting an electric signal according to a travelling state of the vehicle; a throttle valve opening sensing unit(11) outputting a specific signal by detecting opening degree of the throttle valve according to movement of an accelerator pedal; a vehicle speed sensing unit(12) outputting a signal corresponding to traveling speed by detecting RPM(Revolution Per Minute) of an output shaft; a shift stage sensing unit(13) outputting a signal by detecting changed state of the shift stage; a turbine RPM sensing unit(14) detecting a rotational speed of torque shaft of a torque converter connected to an input shaft of a transmission; an engine RPM sensing unit(15) outputting a signal by detecting rotational speed of a crank shaft; and a TCU(Transmission Control Unit)(20) outputting a duty control signal.

Description

자동 변속기의 변속 제어방법Shift control method of automatic transmission

본 발명은 자동 변속기에 관한 것으로써, 더욱 상세하게는 고변속단으로 저속 주행중 급가속시 차량의 주행 응답성을 운전자의 주행의지에 맞게 제어하기 위한 자동 변속기의 변속 제어방법에 관한 것이다.The present invention relates to an automatic transmission, and more particularly, to a shift control method of an automatic transmission for controlling the driving responsiveness of a vehicle at a rapid acceleration during a high speed shift to a driver's willingness to drive.

일반적으로 자동 변속기 차량은 주행 차속과 스로틀 개도량의 변화에 따라 제어수단(Transmission Control Unit: 이하 TCU라 칭함)의 메모리에 저장되어 있는 변속 패턴에 의해 주행 변속단을 결정하게된다.In general, an automatic transmission vehicle determines a driving shift stage by a shift pattern stored in a memory of a transmission control unit (hereinafter referred to as a TCU) according to a change in a driving vehicle speed and a throttle opening amount.

따라서 3속으로 저속 주행(정지전)중인 차량에서 운전자가 급가속을 하고자 가속페달을 밟아 스로틀 개도량을 50% 이상 상승시켰을 때 종래에는 도5에 도시되어 있듯이 메모리에 저장되어 있는 변속 패턴에 의해 변속단은 3속에서 2속까지만 다운 쉬프트 되었다.Therefore, when the driver presses the accelerator pedal to increase the throttle opening amount by 50% or more in a vehicle that is traveling at low speed (before stopping) at 3 speeds, the shift pattern stored in the memory is conventionally stored as shown in FIG. The gearshift was downshifted only from three speeds to two speeds.

그러나 상기한 종래의 기술에서 저속(정지전) 주행중 급가속을 위해 운전자가 가속페달을 조작하여 스로틀 개도량을 50% 이상 상승시키더라도 변속단은 3속에서 2속까지만 다운 쉬프트 됨에 따라 차량의 구동력 부족으로 가속성능이 저하되어 운전자의 급가속의지를 반영하지 못하는 문제점이 있다.However, even if the driver increases the amount of throttle opening by more than 50% by operating the accelerator pedal for the rapid acceleration during the low speed (before stop) driving in the above-described conventional technology, the driving stage of the vehicle is shifted down by only 3 speed to 2 speed. Due to the lack of acceleration performance is a problem that does not reflect the rapid acceleration of the driver.

따라서 본 발명의 목적은 상기한 문제점을 해결하기 위해 안출된 것으로서, 도4에 도시되어 있듯이 변속 제어장치의 변속 제어방법과 변속 패턴을 변경하여 고변속단으로 저속(정지전) 주행중 운전자가 급가속을 위해 가속페달을 조작하여 스로틀 밸브의 개도량을 50%만 상승시켜도 변속단을 1속까지 스킵 다운 쉬프트 변속시킬 수 있는 자동 변속기의 변속 제어방법을 제공하기 위한 것이다.Accordingly, an object of the present invention is to solve the above problems, as shown in Figure 4 by changing the shift control method and the shift pattern of the shift control device to the high speed stage during the low speed (before stop) driving the driver In order to provide a shift control method of an automatic transmission capable of shifting down the shift stage by 1 speed even by increasing the opening amount of the throttle valve by only 50% by operating the accelerator pedal.

도1은 본 발명의 실시예에 따른 자동 변속기의 변속 제어장치 구성 블럭도이고,1 is a block diagram of a shift control apparatus of an automatic transmission according to an embodiment of the present invention;

도2는 본 발명의 실시예에 따른 자동 변속기의 변속 제어방법 동작 순서도이고,2 is a flowchart illustrating a shift control method of an automatic transmission according to an embodiment of the present invention;

도3은 본 발명의 실시예에 따른 자동 변속기의 차속대비 구동력 표시 그래프이고,3 is a graph showing a driving force versus a vehicle speed of an automatic transmission according to an embodiment of the present invention;

도4는 본 발명의 실시예에 따른 자동 변속기의 변속 패턴도이고,4 is a shift pattern diagram of an automatic transmission according to an embodiment of the present invention;

도5는 종래 자동 변속기의 변속 패턴도이다.5 is a shift pattern diagram of a conventional automatic transmission.

상기한 목적을 달성하기 위한 본 발명은,The present invention for achieving the above object,

고변속단으로 저속주행중인 차량에서 운전자의 급가속 의지에 따른 가속페달 조작시 검출되는 차속과 스로틀 밸브 개도량이 가속성능 향상을 위한 변속 패턴 변경조건에 만족하면 메모리에 저장되어 있는 가속 성능을 위한 변속 패턴을 적용하여 변속단을 1속으로 스킵 다운 쉬프트 시키기 위한 듀티 제어신호를 출력하는 단계를 포함하여 이루어지는 것을 특징으로 한다.If the vehicle speed and the throttle valve opening amount detected when the accelerator pedal is operated according to the driver's rapid acceleration will be satisfied with the shift pattern change condition to improve the acceleration performance, the shift pattern for acceleration performance stored in the memory And a step of outputting a duty control signal for skipping down the shift stage by 1 speed.

상기한 목적을 구체적으로 달성하여 실현할 수 있는 본 발명의 실시예를 첨부한 도면을 참조로 상세히 설명한다.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention, which can be achieved and realized in detail by the above objects, will be described in detail with reference to the accompanying drawings.

도1에 도시되어 있듯이 본 발명의 실시예에 따른 자동 변속기의 변속 제어장치 구성은,As shown in Figure 1, the shift control apparatus of the automatic transmission according to the embodiment of the present invention is

차량의 주행상태에 따라 가변되어 출력되는 신호를 감지하여 소정의 전기신호를 출력하는 차량 주행상태 감지수단(10)과;A vehicle driving state detecting means 10 for detecting a signal that is variable and output according to a driving state of the vehicle and outputting a predetermined electric signal;

상기 주행상태 감지수단에서 출력되는 소정의 전기신호를 인가 받아 변속단을 3속으로 저속 주행중인 차량에서 운전자가 급가속을 위해 가속페달 조작을 조작할 때 스로틀 개도량이 설정 기준값이상이면 가속성능 향상을 위한 변속 패턴을 적용하여 변속단을 1속으로 스킵 다운 쉬프트 변속하기 위한 듀티 제어신호를 출력하는 TCU(20)와;Acceleration performance is improved when the throttle opening amount is higher than the set reference value when the driver operates the accelerator pedal operation for rapid acceleration in a vehicle traveling at a low speed at three speeds by receiving a predetermined electric signal output from the driving state detecting means. A TCU 20 for outputting a duty control signal for shifting down the shift stage by 1 speed by applying a shift pattern for shifting to a 1 speed;

상기 TCU(20)에서 출력되는 듀티 제어신호에 따라 유압의 흐름을 제어하여 변속단 3속에서 1속으로 스킵 변속시키는 액츄에이터(30)로 이루어져 있다.The actuator 30 is configured to control the flow of hydraulic pressure according to the duty control signal output from the TCU 20 to skip shift from the third speed to the first speed.

상기에 있어서, 차량 주행상태 감지수단(10)은,In the above, the vehicle driving state detection means 10,

가속 페달의 동작상태에 연동하여 개폐 상태가 가변되는 스로틀 밸브의 개도 정도를 감지하여 소정의 신호를 출력하는 스로틀 밸브 개도 감지부(11)와;A throttle valve opening degree detector 11 for detecting an opening degree of a throttle valve whose opening and closing state is variable in association with an operation state of the accelerator pedal and outputting a predetermined signal;

차량의 출력축 회전수를 감지하여 차량의 주행속도에 상응하는 소정의 신호를 출력하는 차속 감지부(12)와;A vehicle speed detector 12 that detects an output shaft rotational speed of the vehicle and outputs a predetermined signal corresponding to the traveling speed of the vehicle;

스로틀 밸브 개도량과 차속에 따라 변속단이 가변되면, 상기의 변속단의 가변상태를 감지하여 해당하는 신호를 출력하는 변속단 감지부(13)와;A shift stage detecting unit 13 for detecting a variable state of the shift stage and outputting a corresponding signal when the shift stage is changed according to the throttle valve opening amount and the vehicle speed;

변속기의 입력축과 연결되어 있는 토오크 컨버터의 터빈축의 회전 속도를 감지하여 소정의 신호를 출력하는 터빈축 회전수 감지부(14)와;A turbine shaft rotational speed sensing unit 14 for sensing a rotational speed of the turbine shaft of the torque converter connected to the input shaft of the transmission and outputting a predetermined signal;

엔진의 동작 상태에 따라 가변되는 크랭크축의 회전 속도를 검출하여 소정의 신호를 출력하는 엔진 회전수 감지부(15)로 이루어져 있다.The engine rotation speed detection unit 15 detects the rotational speed of the crankshaft which is variable according to the operating state of the engine and outputs a predetermined signal.

상기한 구성에 의해 이루어진 자동 변속기의 변속 제어방법을 도2를 참조하여 설명한다.A shift control method of the automatic transmission made by the above configuration will be described with reference to FIG.

운전자가 목적하고자 하는 곳을 가기 위해 차량을 주행시키던 중 변속단을 3속으로 저속(정지전 차속) 주행중일 때 운전자가 급가속을 위해 가속 페달을 조작하면 TCU(20)는 주행중인 차량의 차속이 설정 기준 차속인 40Kph이하인가를 판단한다(S100,S110,S120).If the driver operates the accelerator at the low speed (pre-stop vehicle speed) while driving the vehicle to go to the desired place, the TCU 20 controls the vehicle speed of the driving vehicle. It is determined whether the set reference vehicle speed is 40 Kph or less (S100, S110, S120).

상기에서 운전자의 가속 페달 조작시의 차속이 설정 기준 차속인 40Kph이하인 경우, TCU(20)는 운전자의 가속 페달 조작에 따른 스로틀 개도량(Th)이 설정 기준값인 50% 이상으로 상승되었는가를 판단한다(S130).When the vehicle speed at the time of the driver's accelerator pedal operation is 40 Kph or less, which is the set reference vehicle speed, the TCU 20 determines whether the throttle opening amount Th according to the driver's accelerator pedal operation is increased to 50% or more, the set reference value. (S130).

상기에서 운전자의 가속 페달 조작에 따른 스로틀 개도량(Th)이 설정 기준값인 50%이상 상승한 것으로 판단되면 TCU(20)는 도4에 도시되어 있듯이 메모리에 저장되어 있는 가속성능 향상에 알맞은 변속 패턴을 적용하여 변속단을 1속으로 스킵 다운 쉬프트 변속하기 위한 제어신호를 구동수단(30)인 액츄에이터에 출력하고 메인 루틴으로 리턴한다(S140,S150).When it is determined that the throttle opening amount Th according to the driver's acceleration pedal operation is increased by 50% or more, which is a set reference value, the TCU 20 generates a shift pattern suitable for improving acceleration performance stored in the memory as shown in FIG. 4. The control signal for skipping shift shifting by shifting the shift stage by 1 speed is output to the actuator, which is the driving means 30, and returned to the main routine (S140 and S150).

따라서 구동수단(30)인 액츄에이터는 상기 TCU(20)에서 출력되는 듀티 제어신호에 의해 듀티 제어되어 3속압을 해제시키고, 오일펌프에서 공급되는 1속압을 라인압으로 출력한다.Therefore, the actuator, which is the driving means 30, is duty controlled by the duty control signal output from the TCU 20 to release the third speed pressure, and outputs the first speed pressure supplied from the oil pump as the line pressure.

하지만 상기(S120)에서 운전자가 가속페달을 조작할 때의 차속이 설정 기준 차속인 40Kph보다 크거나 같고, 또는 스로틀 개도량이 설정 기준값인 50% 이하일 때에는 메모리에 저장되어 있는 평시 변속 패턴을 적용하여 소정의 변속단으로 변속을 수행하기 위한 변속 제어 듀티를 구동 수단(30)인 액츄에이터에 출력하고 메인 루틴으로 리턴한다(S111).However, when the vehicle speed when the driver operates the accelerator pedal in S120 is greater than or equal to 40 Kph, which is the set reference vehicle speed, or when the throttle opening amount is 50% or less, the predetermined shift value stored in the memory is applied. The shift control duty for shifting to the shift stage of the output unit is output to the actuator which is the driving means 30 and returned to the main routine (S111).

상기한 실시예는 가장 바람직한 실시예를 설명한 것으로써, 이에 한정되는 것은 아니며, 상기 실시예로부터 용이하게 설명할 수 있는 것도 본 발명에 포함된다.The above embodiments are described as the most preferred embodiments, and the present invention is not limited thereto, and the embodiments can be easily described from the above embodiments.

이상에서와 같이 본 발명의 실시예서 3속 저속 주행중 운전자의 급가속의지에 따른 가속 페달 조작에 따라 주행차속과 스로틀 개도량이 가속성능 향상을 위한 변속 패턴 적용 조건에 맞으면 메모리에 저장되어 있는 가속성능 향상을 위한 변속 패턴을 적용하여 변속단을 3속에서 1속으로 스킵 다운 쉬프트시켜 도3과 같이 큰 구동력을 확보하여 차량의 응답성을 향상시키고 운전자의 급가속의지를 만족시키기 위한 자동 변속기의 변속 제어방법을 제공하기 위한 것이다.As described above, when the driving speed and the throttle opening amount meet the shift pattern application condition for improving the acceleration performance according to the acceleration pedal operation according to the driver's sudden acceleration in the 3-speed low speed driving, the acceleration performance stored in the memory is improved. By shifting the shift stage from 3 speeds to 1 speed by applying the shifting pattern, the shift control of the automatic transmission for improving the responsiveness of the vehicle and satisfying the driver's willingness to accelerate It is to provide a method.

Claims (1)

3속으로 저속 운전 중 운전다가 급가속 의지에 따라 가속페달이 조작되었나를 판단하는 단계와;Determining whether the accelerator pedal is operated according to the willingness to accelerate while driving at low speed at 3 speeds; 가속페달을 조작한 경우 차속이 설정기준(40m/h))이하인가를 판단하는 단계;Determining whether the vehicle speed is less than or equal to the setting reference (40 m / h) when the accelerator pedal is operated; 차속이 설정기준 이상인 경우 메모리에 저장되어 있는 정상 주행 변속 패턴을 적용하여 변속단을 소정의 변속단으로 변속 제어하기 위한 듀티 제어신호를 출력하는 단계;Outputting a duty control signal for shifting a shift stage to a predetermined shift stage by applying a normal driving shift pattern stored in a memory when the vehicle speed is greater than or equal to a set reference; 차속이 설정기준 이하인 경우 가속페달 조작에 따른 스로틀 개도량이 설정기준갑(50%) 이상인가를 판단하는 단계;Determining whether the throttle opening amount according to the accelerator pedal operation is greater than or equal to the reference value set (50%) when the vehicle speed is lower than the reference value; 스로틀 개도량이 설정 기준값 이상인 경우 메모리에 저장되어 있는 가속 성능 향상용 변속 패턴을 적용하는 단계;Applying a shift pattern for improving acceleration performance stored in a memory when the throttle opening amount is equal to or greater than a set reference value; 변속 패턴 적용에 따라 변속단을 3속에서 1속으로 스깁 다운 쉬프트 변속하기 위한 제어신호를 출력하는 단계;Outputting a control signal for shifting the shift stage from three speeds to one speed according to the shift pattern application; 를 포함하는 자동변속기의 변속 제어방법.Shift control method of an automatic transmission comprising a.
KR1019970069850A 1997-12-17 1997-12-17 Method for controlling shift of automatic transmission KR100302804B1 (en)

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KR100354032B1 (en) * 2000-08-21 2002-09-27 현대자동차주식회사 Shift controlling method for automatic transmission of vehicle
KR100373026B1 (en) * 2000-10-17 2003-02-25 현대자동차주식회사 Transmission control system and method thereof
KR100488708B1 (en) * 2002-10-15 2005-05-11 현대자동차주식회사 Method of controlling shift at low speed and on a downhill road for an antomatic transmission in vehicles
KR102093114B1 (en) * 2018-10-29 2020-03-25 현대 파워텍 주식회사 Apparatus for controlling shift of automatic transmission and method thereof

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