KR100264561B1 - Automatic transmission control method - Google Patents

Automatic transmission control method Download PDF

Info

Publication number
KR100264561B1
KR100264561B1 KR1019950048380A KR19950048380A KR100264561B1 KR 100264561 B1 KR100264561 B1 KR 100264561B1 KR 1019950048380 A KR1019950048380 A KR 1019950048380A KR 19950048380 A KR19950048380 A KR 19950048380A KR 100264561 B1 KR100264561 B1 KR 100264561B1
Authority
KR
South Korea
Prior art keywords
automatic transmission
engine
shift
speed
control method
Prior art date
Application number
KR1019950048380A
Other languages
Korean (ko)
Other versions
KR970046626A (en
Inventor
김성욱
Original Assignee
정몽규
현대자동차주식회사
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 정몽규, 현대자동차주식회사 filed Critical 정몽규
Priority to KR1019950048380A priority Critical patent/KR100264561B1/en
Publication of KR970046626A publication Critical patent/KR970046626A/en
Application granted granted Critical
Publication of KR100264561B1 publication Critical patent/KR100264561B1/en

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
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
    • F16H63/50—Signals to an engine or motor
    • 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
    • F16H59/36—Inputs being a function of speed
    • F16H59/46—Inputs being a function of speed dependent on a comparison between speeds
    • 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
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
    • F16H63/50—Signals to an engine or motor
    • F16H63/502—Signals to an engine or motor for smoothing gear shifts
    • 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
    • F16H59/36—Inputs being a function of speed
    • F16H2059/366—Engine or motor speed
    • 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
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
    • F16H63/50—Signals to an engine or motor
    • F16H2063/506—Signals to an engine or motor for engine torque resume after shift transition, e.g. a resume adapted to the driving style

Landscapes

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

Abstract

PURPOSE: A control method for a shifting operation of an automatic transmission is provided to prevent an engine from being damaged by adjusting the shift range of the automatic transmission when the automatic transmission abnormally changes speed regardless of the driving speed of the engine. CONSTITUTION: To control a shifting operation of an automatic transmission, a control system checks if a gearshift lever is in second speed and decides if the automatic transmission changes the gearshift lever to an upper range or a lower range. In case of the upper range, when an engine an rpm(revolutions per minute) is more than an rpm for the upper range, the gearshift lever is changed to a third shift range. In case of the lower range, when the engine rpm is more than an rpm for the lower range, the gearshift lever is changed to the third shift range.

Description

자동변속기의 변속 제어방법Shift control method of automatic transmission

제1도는 종래의 변속 제어 방법을 보인 신호 흐름도.1 is a signal flow diagram showing a conventional shift control method.

제2도는 본 발명의 변속 제어 방법에 대한 제어 블럭도.2 is a control block diagram of a shift control method of the present invention.

제3도는 본 발명의 변속 제어 방법을 보인 신호 흐름도.3 is a signal flow diagram illustrating a shift control method of the present invention.

본 발명은 자동변속기를 구비하고 있는 차량에 있어서, 엔진의 구동 속도에 관계없이 자동변속기가 비정상적으로 변속되어 있을 경우에 자동변속기의 변속을 조절하여 엔진이 손상되지 않도록 하는 자동변속기의 변속 제어 방법에 관한 것이다.The present invention relates to a shift control method of an automatic transmission in a vehicle having an automatic transmission, in which the engine is not damaged by adjusting the shift of the automatic transmission when the automatic transmission is abnormally shifted regardless of the driving speed of the engine. It is about.

차량용 엔진이 발생하는 토르크는 회전속도에 관계없이 거의 일정하게 유지되나, 출력은 회전속도에 따라 크게 변화되는 특성이 있다.Torque generated by the vehicle engine is maintained almost constant regardless of the rotational speed, but the output is characterized by large changes in accordance with the rotational speed.

그러나 차량이 주행할 경우에 필요로 하는 구동력은 화물의 양, 도로의 상황 및 주행속도 등에 따라 크게 변화된다.However, the driving force required when the vehicle travels varies greatly depending on the amount of cargo, road conditions, and driving speed.

그러므로 엔진과 구동 바퀴의 사이에는 엔진에서 발생된 토르크를 변화시키는 변속기가 필요하다.Therefore, a transmission is required between the engine and the drive wheel to change the torque generated by the engine.

변속기로서는 운전자가 조작하는 수동변속기와, 차량의 주행속도에 따라 자동으로 변속되는 자동변속기가 있다.The transmission includes a manual transmission operated by a driver and an automatic transmission automatically shifted according to the traveling speed of the vehicle.

수동변속기는 변속할 경우에 운전자가 클러치 페달을 밟아 엔진과 구동 바퀴간의 동력 전달을 차단시킨 상태에서 운전자가 변속용 레버를 조작하여 변속해야 되는 것으로서 운전자에게 많은 번거로움을 주고, 피로를 증가시키게 된다.In manual transmission, when the driver depresses the transmission of power between the engine and the driving wheel by stepping on the clutch pedal, the driver has to shift by operating the shifting lever, which causes much trouble for the driver and increases fatigue. .

그리고 자동변속기는 운전자가 차량을 운전하면서 별도로 기어를 변속할 필요가 없어 차량의 운전이 매우 간편하고, 운전자의 피로가 경감되며, 또한 엔진과 동력 전달 장치의 사이에 기계적인 연결이 없어 각 부위에 가해지는 충격이 적으므로 그 사용이 점차 증가되고 있는 실정이다.In addition, the automatic transmission does not need to shift gears while the driver is driving the vehicle, which makes the operation of the vehicle very easy, reduces fatigue of the driver, and there is no mechanical connection between the engine and the power transmission device. Since the impact is small, the use is gradually increasing.

이러한 자동변속기를 구비하고 있는 차량에 있어서, 엔진의 구동 속도에 관계없이 자동변속기가 하단 즉, 2단으로 변속되어 있을 경우에 엔진에 많은 무리를 주어 손상된다.In a vehicle provided with such an automatic transmission, when the automatic transmission is shifted to the lower end, i.e., the second stage, regardless of the driving speed of the engine, the engine is heavily damaged and damaged.

그러므로 자동변속기를 구비하고 있는 차량은 현재 2단으로 변속되어 있는 상태에서 엔진의 구동 속도가 미리 설정된 속도 이상일 경우에 강제로 3단으로 변속하여 엔진을 보호하고 있다.Therefore, a vehicle equipped with an automatic transmission is forcibly shifted to three speeds to protect the engine when the driving speed of the engine is more than a preset speed while the vehicle is currently shifted to two speeds.

이러한 종래의 기술을 제1도의 도면을 참조하여 설명한다.This conventional technique will be described with reference to the drawings of FIG.

제1도는 종래의 변속 제어 방법을 보인 신호 흐름도이다. 이에 도시된 바와 같이, 자동변속기가 현재 2속으로 변속된 상태에서 엔진의 회전수(NE)가 미리 설정된 엔진의 회전수 8000 이상인지를 판단하여 8000 이하일 경우에는 현재의 변속 상태를 계속 유지하고, 상기 변속된 상태에서 엔진의 회전수(NE)가 8000 보다 높을 경우에는 강제로 3속으로 변속하게 하였다.1 is a signal flow diagram illustrating a conventional shift control method. As shown in the drawing, in the state where the automatic transmission is currently shifted to the second speed, it is determined whether the engine speed NE is greater than or equal to the preset engine speed 8000, and if the engine speed is 8000 or less, the current shift state is continuously maintained. When the engine speed NE is higher than 8000 in the shifted state, the engine is forcibly shifted to three speeds.

그러나 상기한 종래의 기술은 현재의 변속이 하단으로 변속 또는 상단으로 변속하는지를 판단하지 않고, 단지 엔진의 회전수에 따라서만 변속을 조절하는 것으로서 자동변속기를 상단으로 변속할 경우에는 엔진을 보호할 수 있으나, 하단으로 변속할 경우에는 엔진의 회전수가 너무 높은 상태에서 변속을 수행하여 엔진에 무리를 주고, 이로 인하여 엔진이 손상되어 차량의 사용 수명을 단축시키게 되는 등의 문제점이 있었다.However, the above-described conventional technique does not determine whether the current shift is shifted to the lower or the upper shift, and adjusts the shift only according to the engine speed, thereby protecting the engine when shifting the automatic transmission to the upper level. However, when shifting to the lower end, the engine is subjected to the shift in a state in which the engine speed is too high, which causes the engine to be impaired, thereby causing damage to the engine and shortening the service life of the vehicle.

따라서 본 발명의 목적은 자동변속기의 상단 변속은 물론 하단 변속을 할 경우에도 엔진에 무리를 주지 않도록 변속을 조절하는 자동변속기의 변속 제어 방법을 제공하는데 있다.Accordingly, an object of the present invention is to provide a shift control method of an automatic transmission in which a shift is not applied to the engine even when a lower shift is performed as well as an upper shift of the automatic transmission.

이러한 목적을 달성하기 위한 본 발명은 자동변속기의 상단 변속 및 하단 변속에 따른 회전수를 미리 설정하여 두고, 자동변속기가 현재 상단 변속 및 하단 변속을 할 경우에 엔진의 회전속도를 검출하여 상단 변속 및 하단 변속에 따라 미리 설정하여 둔 회전속도 이상인지를 판단하여 이상일 경우에 3속으로 변속하는 것을 특징으로 한다.In order to achieve the above object, the present invention sets the rotation speed according to the top shift and the bottom shift of the automatic transmission in advance, and detects the rotational speed of the engine when the automatic transmission is currently shifting the upper and lower shifts. It is characterized in that the shift to three speeds in the case of abnormality by determining whether or not the rotation speed set in advance according to the lower shift.

이하, 첨부된 제2도 및 제3도의 도면을 참조하여 본 발명의 자동변속기의 변속 제어 방법을 상세히 설명한다.Hereinafter, a shift control method of an automatic transmission of the present invention will be described in detail with reference to the accompanying drawings of FIGS. 2 and 3.

제2도는 본 발명의 변속 제어 방법이 적용되는 하드웨어를 보인 회로도이다.2 is a circuit diagram showing hardware to which the shift control method of the present invention is applied.

이에 도시된 바와 같이, 자동변속기를 변속 및 엔진(4)의 구동을 제어하는 전자 제어 유니트(1)와, 상기 전자 제어 유니트(1)의 제어에 따라 자동변속기의 변속을 조절하는 변속부(2)와, 상기 전자 제어 유니트(1)의 제어에 따라 엔진(4)을 구동시키는 엔진 구동부(3)로 구성하였다.As shown therein, the electronic control unit 1 controls the transmission of the automatic transmission and the driving of the engine 4, and the transmission unit 2 that controls the shift of the automatic transmission according to the control of the electronic control unit 1. ) And an engine driver 3 for driving the engine 4 under the control of the electronic control unit 1.

이러한 구성의 하드웨어에 적용되는 본 발명의 제어 방법은 제3도에 도시된 바와 같이, 현재 자동변속기의 변속을 판단하여 2속일 경우에 상단 변속 또는 하단 변속인지를 판단한다.In the control method of the present invention applied to the hardware having such a configuration, as shown in FIG. 3, the shift of the current automatic transmission is determined to determine whether it is the top shift or the bottom shift in the case of the second speed.

이때, 상단 변속일 경우에 엔진의 회전수(NE)가 미리 설정된 엔진의 회전수 8000 이상인지를 판단하여 상기 변속 상태에서 엔진의 회전수가 8000 이하일 경우에는 현재의 변속 상태를 계속 유지하고, 상기 변속 상태에서 엔진 회전수가 8000 보다 높을 경우에는 자동변속기를 3속으로 변속한다.At this time, it is determined whether the engine speed NE is greater than or equal to the preset engine speed 8000 in the case of the top shift, and when the engine speed is 8000 or less in the shift state, the current shift state is continuously maintained. If the engine speed is higher than 8000, the automatic transmission is shifted to three speeds.

그리고 하단 변속일 경우에는 엔진의 회전수(NE)가 미리 설정된 엔진의 회전수 6200 이상인지를 판단하여 상기 엔진의 회전수가 미리 설정된 엔진의 회전수 6200 이하일 경우에는 현재의 변속 상태를 계속 유지하고, 6200 보다 높을 경우에 자동변속기를 3속으로 변속한다.In the case of the lower speed change, it is determined whether the engine speed NE is greater than or equal to the preset engine speed 6200. If the engine speed is less than or equal to the preset speed 6200, the current shift state is maintained. If it is higher than 6200, the automatic transmission is shifted to three speeds.

이상에서와 같이 본 발명은 자동변속기의 상단 변속 및 하단 변속에 따라 엔진의 회전수가 미리 설정된 회전수 보다 높을 경우에 자동으로 3속으로 변속함으로써 상단 변속은 물론 하단 변속을 할 경우에 엔진의 높은 회전수에 따른 변속을 수행하여 엔진에 무리를 주지 않게 된다.As described above, according to the present invention, when the engine speed is higher than the preset speed according to the top shift and the bottom shift of the automatic transmission, the engine shifts to three speeds automatically so that the engine rotates in the upper shift as well as the lower shift. By shifting according to the number, the engine is not overwhelmed.

Claims (3)

자동변속기가 현재 2속인지를 판단하는 제1과정과, 상기 제1과정에서 2속일 경우에 상단 변속 또는 하단 변속인지를 판단하는 제2과정과, 상기 제2과정에서 상단 변속인 상태에서 엔진의 회전수가 상단 변속에 따른 회전수 이상일 경우에 3속으로 변속하는 제3과정과, 상기 제2과정에서 하단 변속인 상태에서 엔진의 회전수가 하단 변속에 따른 회전수 이상일 경우에 3속으로 변속하는 제4과정으로 제어됨을 특징으로 하는 자동변속기의 변속 제어 방법.A first process of determining whether the automatic transmission is currently second speed, a second process of determining whether the top speed or the bottom speed is shifted when the second speed is the second speed, and the second speed of the engine in the second speed A third step of shifting to three speeds when the rotation speed is equal to or higher than the speed according to the upper shift; and a third shifting to three speeds when the rotation speed of the engine is higher than the rotation speed according to the lower shift in the second shift; A shift control method of an automatic transmission, characterized in that the control in four processes. 제1항에 있어서, 제3과정은 상단 변속에 따른 엔진의 회전수가 8000 이상인 것을 특징으로 하는 자동변속기의 변속 제어 방법.The shift control method of an automatic transmission according to claim 1, wherein the third process has an engine speed of 8000 or more according to an upper shift. 제1항에 있어서, 제4과정은 상단 변속에 따른 엔진의 회전수가 6200 이상인 것을 특징으로 하는 자동변속기의 변속 제어 방법.The shift control method of an automatic transmission according to claim 1, wherein the fourth process has an engine speed of 6200 or more according to an upper shift.
KR1019950048380A 1995-12-11 1995-12-11 Automatic transmission control method KR100264561B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950048380A KR100264561B1 (en) 1995-12-11 1995-12-11 Automatic transmission control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950048380A KR100264561B1 (en) 1995-12-11 1995-12-11 Automatic transmission control method

Publications (2)

Publication Number Publication Date
KR970046626A KR970046626A (en) 1997-07-26
KR100264561B1 true KR100264561B1 (en) 2000-10-02

Family

ID=19439054

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950048380A KR100264561B1 (en) 1995-12-11 1995-12-11 Automatic transmission control method

Country Status (1)

Country Link
KR (1) KR100264561B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101805965B1 (en) * 2011-03-22 2017-12-06 아우디 아게 Method and apparatus for influencing an automatic transmission
KR20210016985A (en) * 2019-08-06 2021-02-17 현대자동차주식회사 Shift control apparatus for vehicle and method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101805965B1 (en) * 2011-03-22 2017-12-06 아우디 아게 Method and apparatus for influencing an automatic transmission
KR20210016985A (en) * 2019-08-06 2021-02-17 현대자동차주식회사 Shift control apparatus for vehicle and method thereof
KR102261292B1 (en) * 2019-08-06 2021-06-04 현대자동차 주식회사 Shift control apparatus for vehicle and method thereof

Also Published As

Publication number Publication date
KR970046626A (en) 1997-07-26

Similar Documents

Publication Publication Date Title
US5216938A (en) Control apparatus with fail-safe faculty
KR100373026B1 (en) Transmission control system and method thereof
KR20030022078A (en) shift control system for automatic transmission
KR100264561B1 (en) Automatic transmission control method
US5152388A (en) Method and apparatus for controlling a clutch for vehicles
KR20020083508A (en) vehicle traction control system
JPH0974607A (en) Torque assist device of cvt vehicle
KR100401604B1 (en) Device and method for controlling engine brake of automatic transmission
JP3089904B2 (en) Drive control device for electric vehicle
KR100384163B1 (en) Method for controling a return of transmission of 4→2→4 level
JP2006504047A (en) How to start upshifting during kickdown
KR100279453B1 (en) Hydraulic control method of automatic transmission
KR100398172B1 (en) Kickdown switch control device of automatic transmission
KR100198497B1 (en) Exchange warning device and its control method of automatic transmission
KR100280629B1 (en) How to prevent the car from starting off
KR100410756B1 (en) METHOD FOR 3Th HOLDING CONTROL OF AUTOMATIC TRANSMISSION IN VEHICLE
KR19980060039A (en) Shift control device at high temperature and its method
KR100384005B1 (en) Method for power on 2 →3 up shift controlling of automatic transmission in vehicle
KR100405669B1 (en) Shift control device and method of automatic transmission
KR19990040799A (en) Automatic low gear shift when driving downhill
JP3427734B2 (en) Transmission control device for continuously variable transmission
KR100264596B1 (en) Shift control method for automatic transmisson
KR100345127B1 (en) Method for engine idle speed controlling of automatic transmission of vehicle
KR960007062B1 (en) Automatic transmission
KR20030044097A (en) Apparatus for engine torque reduction controlling in automatic transmission and method thereof

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
LAPS Lapse due to unpaid annual fee