KR100376712B1 - Method for controlling 4→3 shift before sudden stop of an automatic transmission for a vehicle - Google Patents
Method for controlling 4→3 shift before sudden stop of an automatic transmission for a vehicle Download PDFInfo
- Publication number
- KR100376712B1 KR100376712B1 KR10-2000-0087036A KR20000087036A KR100376712B1 KR 100376712 B1 KR100376712 B1 KR 100376712B1 KR 20000087036 A KR20000087036 A KR 20000087036A KR 100376712 B1 KR100376712 B1 KR 100376712B1
- Authority
- KR
- South Korea
- Prior art keywords
- shift
- vehicle speed
- vehicle
- automatic transmission
- time
- Prior art date
Links
Classifications
-
- 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
- F16H59/20—Kickdown
-
- 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
- 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
- F16H2059/6815—Post shift value of gearing, i.e. calculated or estimated parameters after shift is completed, e.g. estimated output torque after shift is performed
-
- 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
- F16H61/02—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 characterised by the signals used
- F16H61/0202—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 characterised by the signals used the signals being electric
- F16H61/0204—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 characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
- F16H61/0213—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 characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal characterised by the method for generating shift signals
- F16H2061/0244—Adapting the automatic ratio to direct driver requests, e.g. manual shift signals or kick down
-
- 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
- F16H61/16—Inhibiting or initiating shift during unfavourable conditions, e.g. preventing forward reverse shift at high vehicle speed, preventing engine over speed
- F16H2061/163—Holding the gear for delaying gear shifts under unfavorable conditions, e.g. during cornering
-
- 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
- F16H2312/00—Driving activities
- F16H2312/16—Coming to a halt
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
본 발명의 자동차용 자동변속기의 급정지전 4→3 쉬프트 제어방법은, 자동변속기가 장착된 차량에서 급정지 조건이 성립하는 경우, 변속 제어수단은 정지전 4→3 변속 개시점에서 현재 차속을 검출하는 단계와; 설정된 쉬프트 패턴상의 정지전 4→3 선에 의한 차속이 상기 변속 개시 시점에서 검출된 차속을 초과하는 경우, 상기 변속 제어수단은 상기 설정된 쉬프트 패턴상의 정지전 4→3 선에 의한 차속과 상기 변속 개시 시점에서 검출된 차속 및 해방측 유압 해제시간의 기본치에 따라 해방측 유압 해제시간을 설정하여 정지전 4→3 변속 제어를 수행하는 단계를 포함하여 이루어져, 5단 자동변속기에서 급정지 4→3 쉬프트시 변속 개시점의 차속에 따라 해방측 유압 해제시간을 가변시켜 결합측 제어 지연을 개선함으로써 급정지전 4→3 쉬프트시 변속 충격을 저감시킬 수 있다.In the sudden stop 4 to 3 shift control method of the automatic transmission for a vehicle of the present invention, when the sudden stop condition is satisfied in a vehicle equipped with an automatic transmission, the shift control means detects the current vehicle speed at the starting point of the shift of 4 to 3 before stop. Steps; If the vehicle speed by the line 4 → 3 before stop on the set shift pattern exceeds the vehicle speed detected at the start of the shift, the shift control means starts the vehicle speed by the line 4 → 3 before stop on the set shift pattern and the shift start. Setting the release side hydraulic release time according to the base value of the vehicle speed and release side hydraulic release time detected at the point of time, and performing the step 4 → 3 shift control before stop, and the sudden stop 4 → 3 shift in the five-speed automatic transmission. By changing the release side hydraulic release time according to the vehicle speed at the time shift start point and improving the coupling side control delay, the shift shock at the time of sudden stop 4 → 3 shift can be reduced.
Description
본 발명은 자동차용 자동변속기의 급정지전 4→3 쉬프트 제어방법에 관한 것으로, 보다 상세하게는 5단 자동변속기에서 5→4 후 4→3 다운 쉬프트시 발생되는동기 이탈에 의한 변속 충격을 저감시키기 위한 자동차용 자동변속기의 급정지전 4→3 쉬프트 제어방법에 관한 것이다.The present invention relates to a 4 to 3 shift control method for sudden stop of an automatic transmission for a vehicle. More particularly, the present invention relates to reducing a shift shock due to synchronous deviation generated during a 4 to 3 downshift after 5 to 4 in a five-speed automatic transmission. The present invention relates to a 4 → 3 shift control method for sudden stop of an automatic transmission for a vehicle.
일반적으로 자동변속기는 자동차의 주행속도에 따라 설정되어 있는 변속 범위안에서 유체의 흐름을 제어하여 자동으로 해당하는 목표 변속단의 마찰요소가 동작될 수 있도록 구성되어 있다.In general, the automatic transmission is configured to control the flow of the fluid within the shift range set according to the driving speed of the vehicle so that the friction element of the corresponding target shift stage can be automatically operated.
그러므로 엔진(engine)의 출력 동력에 따라 토크 컨버터(torque converter)를 동작시켜 유체의 회전력을 제어하고, 자동차의 동작 상태에 따른 해당 마찰요소가 동작 될 수 있도록 변속 제어 장치에서 인가되는 제어 신호에 따라 해당 밸브로 유체가 작용하여 변속 동작이 이루어질 수 있도록 한다.Therefore, the torque converter is operated according to the output power of the engine to control the rotational force of the fluid, and according to the control signal applied from the shift control device so that the corresponding friction element according to the operating state of the vehicle can be operated. Fluid acts on the valve to allow shifting.
따라서 상기와 같이 자동차의 주행 상태에 따라 설정되어 있는 각 마찰요소의 체결/해제 동작을 제어하며, 해당 변속단으로의 변속 동작을 실행할 경우, 마찰요소를 작동시키기 위한 압력의 크기를 변속 상태로 따라 보정하기 위한 피드백 제어 동작을 실행한다.Accordingly, as described above, the fastening / release operation of each friction element set according to the driving state of the vehicle is controlled, and when the shift operation to the shift stage is performed, the magnitude of the pressure for operating the friction element is changed according to the shift state. The feedback control operation for correction is performed.
상기 피드백 제어 동작을 위해 변속 상태에 따라 압력 컨트롤 솔레노이드 밸브의 동작 상태를 가변시키기 위한 압력 제어 신호의 듀티율을 보정할 수 있도록 설계되어 있다.It is designed to correct the duty ratio of the pressure control signal for varying the operating state of the pressure control solenoid valve according to the shift state for the feedback control operation.
도1에는 이러한 자동변속기의 변속 제어 시스템이 도시되어 있다.1 shows a shift control system of such an automatic transmission.
도1에 따르면, 변속 제어 시스템은, 차량의 주행 조건에 관한 각종 정보를 검출하기 위한 감지수단(10)과, 상기 감지수단(10)에 의해 검출되는 정보를 바탕으로 주행 조건을 감지하여 상기 주행 조건에 따라 자동변속기의 변속 패턴을 설정하기 위한 변속 제어수단(20)과, 상기 변속 제어수단(20)의 변속 패턴에 의해 제어되어 자동변속기의 각 변속단을 구동시키기 위하여 다수의 유압 솔레노이드 밸브를 구비하는 구동수단(30)을 포함한다.According to FIG. 1, the shift control system detects a driving condition based on detection means 10 for detecting various types of information on a driving condition of a vehicle, and information detected by the detection means 10 to drive the vehicle. A plurality of hydraulic solenoid valves are controlled by a shift control means 20 for setting a shift pattern of the automatic transmission according to a condition and a shift pattern of the shift control means 20 to drive each shift stage of the automatic transmission. It includes a drive means 30 provided.
상기 변속 제어수단(20)은 일반적으로 TCU(Transmission Control Unit)로 구현하고, 상기 구동수단(30)은 상기 TCU에 의해 제어되는 솔레노이드 밸브들이 다수 구비된 밸브바디로 구현될 수 있다.The shift control means 20 is generally implemented as a transmission control unit (TCU), the drive means 30 may be implemented as a valve body provided with a plurality of solenoid valves controlled by the TCU.
상기에서 감지수단(10)은 운전자의 가속페달 조작에 연동하는 스로틀 밸브의 개도량을 감지하기 위한 스로틀 밸브 개도량 감지부(11)와, 차량의 이동 속도를 검출하기 위한 차속 감지부(12)와, 변속단의 변속 위치를 검출하기 위한 변속단 감지부(13)와, 토크 컨버터의 터빈 회전수를 검출하기 위한 터빈 회전수 감지부(14)와, 엔진 회전수를 감지하기 위한 엔진 회전수 감지부(15)를 포함한다.The sensing means 10 includes a throttle valve opening amount detecting unit 11 for detecting an opening amount of a throttle valve linked to an accelerator pedal operation of a driver, and a vehicle speed detecting unit 12 for detecting a moving speed of the vehicle. And a shift stage sensing unit 13 for detecting a shift position of the shift stage, a turbine rotation speed sensing unit 14 for detecting turbine rotation speed of the torque converter, and an engine rotation speed for sensing engine speed The sensing unit 15 is included.
이러한 자동변속기에서 차량이 급정지하는 경우, 일반적으로 5→4 변속 제어가 완료되기 전에 이미 4→3 변속 개시점을 경과하게 된다. 그래서 매우 낮은 차속에서 변속 제어를 수행하게 되는데, 해방측 유압은 아직 라인압으로 증가되지 않은 상태에 해당한다.In the case where the vehicle suddenly stops in such an automatic transmission, it is generally past the 4 → 3 shift start point before the 5 → 4 shift control is completed. Therefore, shift control is performed at a very low vehicle speed, and the release hydraulic pressure is not yet increased to line pressure.
그런데 종래의 변속 제어 방식에서는 해방측 유압이 라인압 상태로 고려된 일반적인 정지전 4→3 변속 제어를 수행하도록 되어 있다.By the way, in the conventional shift control method, the general hydraulic shift control of the shift 4 → 3 before the release side hydraulic pressure is considered as the line pressure state is performed.
따라서 결합측 제어가 늦어지게 되어 정상적인 동기 제어가 이루어지지 않게 되고, 변속 제어 종료 후 변속 충격이 발생되는 문제점이 있다.Therefore, there is a problem that the coupling control is delayed, so that normal synchronous control is not performed, and shift shock occurs after the shift control ends.
본 발명은 상기와 같은 종래의 문제점을 해소하기 위해 창출된 것으로, 본 발명의 목적은 5단 자동변속기에서 5→4 후 4→3 다운 쉬프트시 발생되는 동기 이탈에 의한 변속 충격을 저감시킨 자동차용 자동변속기의 급정지전 4→3 쉬프트 제어방법을 제공하는 데 있다.The present invention was created in order to solve the above-mentioned conventional problems, and an object of the present invention is to reduce the impact of the shift caused by the synchronous deviation generated during 4 → 3 downshift after 5 → 4 in a five-speed automatic transmission. The present invention provides a method of controlling a 4 to 3 shift in a sudden stop of an automatic transmission.
도1은 일반적인 자동변속기 변속 제어 시스템의 구성도이고,1 is a block diagram of a general automatic transmission control system,
도2는 본 발명의 실시예에 의한 자동차용 자동변속기의 급정지전 4→3 쉬프트 제어방법의 순서도이며,2 is a flowchart of a method for controlling sudden shift 4 → 3 of a sudden stop of an automatic transmission for a vehicle according to an exemplary embodiment of the present invention.
도3은 본 발명에 따른 급정지전 4→3 쉬프트 제어시의 듀티선도이다.Fig. 3 is a duty diagram at the time of sudden stop 4 to 3 shift control according to the present invention.
* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings
10 : 감지수단 11 : 스로틀 밸브 개도량 감지부10: detection means 11: throttle valve opening amount detection unit
12 : 차속 감지부 13 : 변속단 감지부12: vehicle speed detection unit 13: shift stage detection unit
14 : 터빈 회전수 감지부 15 : 엔진 회전수 감지부14 turbine speed detection unit 15 engine speed detection unit
20 : 제어수단 30 : 구동수단20: control means 30: drive means
상기 목적을 달성하기 위한 본 발명의 자동차용 자동변속기의 급정지전 4→3 쉬프트 제어방법은, 자동변속기가 장착된 차량에서 4→3 쉬프트시 설정된 급정지 조건이 성립되는 경우, 변속 제어수단은 정지전 4→3 변속 개시점에서 현재 차속을 검출하는 단계와; 설정된 쉬프트 패턴상의 정지전 4→3 선에 의한 차속이 상기 변속 개시 시점에서 검출된 차속을 초과하는 경우, 상기 변속 제어수단은 상기 설정된 쉬프트 패턴상의 정지전 4→3 선에 의한 차속과 상기 변속 개시 시점에서 검출된 차속 및 해방측 유압 해제시간의 기본치에 따라 해방측 유압 해제시간을 설정하여 정지전 4→3 변속 제어를 수행하는 단계를 포함하는 것을 그 특징으로 한다.In the instantaneous stop 4 → 3 shift control method of the automatic transmission for automobiles of the present invention for achieving the above object, when the sudden stop condition set at the time of 4 → 3 shift is established in a vehicle equipped with an automatic transmission, the shift control means Detecting a current vehicle speed at a 4 → 3 shift start point; If the vehicle speed by the line 4 → 3 before stop on the set shift pattern exceeds the vehicle speed detected at the start of the shift, the shift control means starts the vehicle speed by the line 4 → 3 before stop on the set shift pattern and the shift start. And setting the release side hydraulic release time in accordance with the basic values of the vehicle speed and the release side hydraulic release time detected at the time point to perform 4 → 3 shift control before stop.
이하, 첨부도면을 참조하여 본 발명에 따른 바람직한 실시예를 설명한다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.
도2는 본 발명의 실시예에 의한 자동차용 자동변속기의 급정지전 4→3 쉬프트 제어방법의 순서도이고, 도3은 본 발명에 따른 급정지전 4→3 쉬프트 제어시의 듀티선도이다.FIG. 2 is a flow chart of a sudden stop 4 → 3 shift control method for an automatic transmission for a vehicle according to an exemplary embodiment of the present invention, and FIG. 3 is a duty diagram during sudden stop 4 → 3 shift control according to the present invention.
본 발명의 변속 제어수단(20, 도1 참조)은 바람직하게는 TCU로 구현한다.The shift control means 20 (see Fig. 1) of the present invention is preferably implemented by TCU.
도2에 따르면, 자동변속기가 장착된 차량에서 변속 제어수단(20)은 감지수단(10, 도1 참조)에 의해 감지되어 인가되는 감지신호를 통해 4→3 쉬프트가발생되는지 여부를 판단한다(ST21).According to FIG. 2, in a vehicle equipped with an automatic transmission, the shift control means 20 determines whether a 4 → 3 shift is generated through a sensing signal detected and applied by the sensing means 10 (see FIG. 1) ( ST21).
그래서 4→3 쉬프트에 해당함을 확인하게 되면, 변속 제어수단(20)은 차속의 시간에 따른 변화율(dNo/dt)을 검출하여 설정된 임계 변화율 보다 작은지 여부를 판단한다(ST22).Therefore, when it is confirmed that the shift is in the 4 → 3 shift, the shift control means 20 detects a change rate dNo / dt according to the time of the vehicle speed and determines whether it is smaller than the set threshold change rate (ST22).
바람직하게는 임계 변화율은 -16rev/s^2로 설정한다.Preferably, the threshold rate of change is set to −16 rev / s ^ 2.
단계 ST22는 급정지 조건이 성립되는지 여부를 판단하기 위한 것이다. 즉, 차속의 시간에 따른 변화율을 검출하여 설정된 임계 변화율 보다 작은 경우에 변속 제어수단(20)은 급정지에 해당하는 것으로 판단할 수 있다.Step ST22 is for determining whether a sudden stop condition is established. That is, when the rate of change over time of the vehicle speed is smaller than the set threshold rate of change, the shift control means 20 may determine that it corresponds to a sudden stop.
이처럼 단계 ST22에서 급정지 조건의 성립이 확인되면, 변속 제어수단(20)은 4→3 변속 제어를 개시하고 변속 개시 시점에서의 차속(No)을 검출한다(ST23).When the sudden stop condition is confirmed as described above in step ST22, the shift control means 20 starts the shift control from 4 to 3 and detects the vehicle speed No at the shift start time (ST23).
단계 ST23에서 차속(No)이 검출되면, 변속 제어수단(20)은 설정된 쉬프트 패턴상의 정지전 4→3 선에 의한 차속(No1)이 상기 변속 개시 시점에서 검출된 차속(No)을 초과하는지 여부를 판단한다(ST24).When the vehicle speed No is detected in step ST23, the shift control means 20 determines whether or not the vehicle speed No1 caused by 4 to 3 lines before stop on the set shift pattern exceeds the vehicle speed No detected at the start of the shift. Determine (ST24).
단계 ST24에서 설정된 쉬프트 패턴상의 정지전 4→3 선에 의한 차속(No1)이 상기 변속 개시 시점에서 검출된 차속(No)을 초과하는 경우, 변속 제어수단(20)은 해방측 유압 해제시간을 쉬프트 패턴상의 정지전 4→3 선에 의한 차속(No1)과 상기 변속 개시 시점에서 검출된 차속(No) 및 상기 변속 개시 시점에서 검출된 차속 및 해방측 유압 해제시간의 기본치에 따라 해방측 유압 해제시간을 계산한다.When the vehicle speed No1 by the 4 to 3 lines before stop on the shift pattern set in step ST24 exceeds the vehicle speed No detected at the shift start time, the shift control means 20 shifts the release side hydraulic release time. Release side hydraulic release according to the vehicle speed No1 by the 4 to 3 line before stopping on the pattern, the vehicle speed No detected at the start of the shift and the basic value of the vehicle speed and release side hydraulic release time detected at the shift start time Calculate the time
상기 해방측 유압 해제시간은, 상기 쉬프트 패턴상의 정지전 4→3 선에 의해 지정되는 차속을 No1이라 하고 상기 변속 개시 시점에서 검출된 차속을 No라 하면,(To1=To-(No1-No)*C)와 같이 계산된다.The release side hydraulic pressure release time is a vehicle speed specified by the line 4 → 3 before stopping on the shift pattern is No1, and the vehicle speed detected at the shift start time is No. (To1 = To- (No1-No) Calculated as * C).
이때 To는 설정된 해방측 유압 해제시간 기준치이고, To1은 상기 연산으로 설정되는 해방측 유압 해제시간이다. 한편, C는 임의로 지정할 수 있는 시간 환산 계수이다(ST25).At this time, To is the set release side hydraulic release time reference value, To1 is the release side hydraulic release time set by the above calculation. C is a time conversion coefficient that can be arbitrarily designated (ST25).
이처럼 해방측 유압 해제시간이 설정되면, 변속 제어수단(20)은 상기 해방측 유압 해제시간에 따라 해방측 유압이 해제되도록 하고, 이어서 통상의 정지전 4→3 쉬프트 제어를 수행한다(ST26).When the release side hydraulic pressure release time is set as described above, the shift control means 20 causes the release side hydraulic pressure to be released according to the release side hydraulic pressure release time, and then performs the shift control 4 → 3 before normal stop (ST26).
이상 설명한 변속 제어수단(20)에 의해 수행되는 변속 제어에 따른 듀티선도가 도3에 도시되어 있다.3 is a duty diagram according to the shift control performed by the shift control means 20 described above.
도3에 따르면, 종래에는 해방측 유압이 라인압 상태인 것으로 판단하여 일반적인 정지전 4→3 쉬프트 제어를 수행하기 때문에 해방측 유압 해제시간이 변화되지 않음에 비해, 본 발명은 쉬프트 패턴상의 정지전 4→3 선에 의한 차속과 상기 변속 개시 시점에서 검출된 차속을 이용하여 해방측 유압 해제시간을 설정함으로써, 해방측 유압 해제시간을 가변시키게 되는 것이다.According to Fig. 3, since the release side hydraulic pressure is conventionally determined to be in the line pressure state, and thus the general release control is performed before the stop operation, the release side hydraulic release time is not changed. The release side hydraulic pressure release time is varied by setting the release side hydraulic release time using the vehicle speed by the 4 → 3 line and the vehicle speed detected at the start of the shift.
이상 설명한 본 발명의 자동차용 자동변속기의 급정지전 4→3 쉬프트 제어방법에 따르면, 5단 자동변속기 등에서 급정지 4→3 쉬프트시 변속 개시점의 차속에 따라 해방측 유압 해제시간을 가변시켜 결합측 제어 지연을 개선함으로써, 급정지전 4→3 쉬프트시 변속 충격을 저감시킬 수 있는 효과가 있다.According to the quick stop 4 to 3 shift control method of the automatic transmission for automobiles of the present invention described above, the coupling side control is performed by varying the release side hydraulic release time according to the vehicle speed of the shift start point during the sudden stop 4 to 3 shift in a five-speed automatic transmission. By improving the delay, it is possible to reduce the shift shock at the time of the 4 to 3 shift before the sudden stop.
이상에서 본 발명의 바람직한 실시예를 설명하였으나, 본 발명은 다양한 변화와 변경 및 균등물을 사용할 수 있다. 본 발명은 상기 실시예를 적절히 변형하여 동일하게 응용할 수 있음이 명확하다. 따라서 상기 기재 내용은 하기 특허청구범위를 한정하는 것이 아니다.Although the preferred embodiment of the present invention has been described above, the present invention may use various changes, modifications, and equivalents. It is clear that the present invention can be applied in the same manner by appropriately modifying the above embodiments. Therefore, the above description does not limit the scope of the following claims.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2000-0087036A KR100376712B1 (en) | 2000-12-30 | 2000-12-30 | Method for controlling 4→3 shift before sudden stop of an automatic transmission for a vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2000-0087036A KR100376712B1 (en) | 2000-12-30 | 2000-12-30 | Method for controlling 4→3 shift before sudden stop of an automatic transmission for a vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20020058904A KR20020058904A (en) | 2002-07-12 |
| KR100376712B1 true KR100376712B1 (en) | 2003-03-17 |
Family
ID=27689969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR10-2000-0087036A KR100376712B1 (en) | 2000-12-30 | 2000-12-30 | Method for controlling 4→3 shift before sudden stop of an automatic transmission for a vehicle |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR100376712B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101683841B1 (en) * | 2015-09-24 | 2016-12-20 | 현대 파워텍 주식회사 | Shift control apparatus for transmission of vehicle and method thereof |
-
2000
- 2000-12-30 KR KR10-2000-0087036A patent/KR100376712B1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101683841B1 (en) * | 2015-09-24 | 2016-12-20 | 현대 파워텍 주식회사 | Shift control apparatus for transmission of vehicle and method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20020058904A (en) | 2002-07-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6740005B2 (en) | Shift control apparatus of automatic transmission of motor vehicle | |
| US6085140A (en) | Shift control method and system for an automatic transmission | |
| KR100357584B1 (en) | Method for improvement a kick down response of a five shift automatic transmission | |
| KR100527498B1 (en) | The first stage pressure learn system of when up shift on automatic transmission and method thereof | |
| KR100376712B1 (en) | Method for controlling 4→3 shift before sudden stop of an automatic transmission for a vehicle | |
| US6510371B1 (en) | Shift control method for automatic transmission | |
| JP4215186B2 (en) | Shift control method for automatic transmission for vehicle | |
| KR100561030B1 (en) | Method for adaptation of pressure of an overlapping upshifting | |
| JPH11321386A (en) | Shift control device for automatic transmission and kick down estimation method for automatic transmission | |
| KR20030006050A (en) | Method controlling shift at an up-shift for an automatic transmission in vehicles | |
| KR100331645B1 (en) | Method for controlling a run up of automatic transmission | |
| KR100551303B1 (en) | Pressure controlling system of automatic transmission on vehicle and method thereof | |
| KR0168310B1 (en) | Shift control method of a/t | |
| KR100376711B1 (en) | Method for controlling up shift pattern learning of transmission for a vehicle | |
| KR19980049798A (en) | Shift control method of automatic transmission before stop | |
| KR19990050716A (en) | Shift control method of automatic transmission | |
| KR101262064B1 (en) | Control Method for Engine RPM at Down-Shift before Stop | |
| US7134983B2 (en) | Shift control method of automatic transmission for vehicles | |
| KR100284827B1 (en) | How to Increase Shift Response of Automatic Transmission Vehicles | |
| KR100200114B1 (en) | The hydraulic controller and the method for kickdown | |
| JP2003049936A (en) | Method and system for controlling learning of vehicular automatic transmission | |
| KR100551272B1 (en) | Method for controlling shift automatic transmission of vehicle | |
| KR100206011B1 (en) | Transmission controller | |
| KR100380097B1 (en) | Shift controlling method for automatic transmission of vehicle | |
| KR100206006B1 (en) | Transmission controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant | ||
| FPAY | Annual fee payment |
Payment date: 20070302 Year of fee payment: 5 |
|
| LAPS | Lapse due to unpaid annual fee |