KR970003536B1 - Transmission - Google Patents

Transmission Download PDF

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Publication number
KR970003536B1
KR970003536B1 KR1019940032405A KR19940032405A KR970003536B1 KR 970003536 B1 KR970003536 B1 KR 970003536B1 KR 1019940032405 A KR1019940032405 A KR 1019940032405A KR 19940032405 A KR19940032405 A KR 19940032405A KR 970003536 B1 KR970003536 B1 KR 970003536B1
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KR
South Korea
Prior art keywords
range
automatic transmission
lever
supply line
controller
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KR1019940032405A
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Korean (ko)
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KR960021709A (en
Inventor
김현진
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기아자동차 주식회사
한승준
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Priority to KR1019940032405A priority Critical patent/KR970003536B1/en
Publication of KR960021709A publication Critical patent/KR960021709A/en
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Publication of KR970003536B1 publication Critical patent/KR970003536B1/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H61/00Control 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
    • F16H61/16Inhibiting or initiating shift during unfavourable conditions, e.g. preventing forward reverse shift at high vehicle speed, preventing engine over speed
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H61/00Control 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
    • F16H61/16Inhibiting or initiating shift during unfavourable conditions, e.g. preventing forward reverse shift at high vehicle speed, preventing engine over speed
    • F16H2061/165Preventing reverse gear shifts if vehicle speed is too high for safe shifting

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

Abstract

A quick-reverse turn prevention device of automatic transmission having a solenoid valve(10) connected to working oil suppling line(L1) and a controller(9); a controller connected to a speed sensor and a brake switch; and a working oil suppling line(L1) shuted by appling current to said solenoid valve(10) in case that acceleration is less than -10 F is disclosed. Thereby, it is possible to prevent quick-reverse turn due to inertia force generated in a engine and the transmission in a sudden stop, to prevent the damage of the transmission and to prevent to turn-off the engine.

Description

자동변속기의 후진레인지 급전환방지장치Reverse range sudden change prevention device of automatic transmission

본 발명은 자동변속기의 변속레인지에 관한 것으로, 차량의 고속주행시에 급정거로 인해 주행레인지가 후진레인지로 뜻하지 않게 전환되는 것을 방지하도록 하는 자동변속기의 후진레인지 급전환방지기구에 관한 것이다.The present invention relates to a shift range of an automatic transmission, and more particularly, to a reverse range sudden change prevention mechanism of an automatic transmission, which prevents the driving range from being accidentally switched to the reverse range due to a sudden stop at a high speed driving of a vehicle.

종래 후륜구동방식의 자동변속기(2)는 도 2에 도시된 것과 같이, 엔진(1)과 연결된 자동변속기(2)의 메뉴엘레바(3)에 선택레바(4)가 회동 가능하게 연결되고, 상기 선택레바(4)는 선택로드(5)가 전후로 이동될 수 있게 연결되면서 이 선택로드(5)에는 변속레바(6)가 힌지(7)를 통해 연결된 구조로 되어 있다.In the conventional rear wheel drive automatic transmission (2), as shown in Figure 2, the select lever (4) is rotatably connected to the menu lever (3) of the automatic transmission (2) connected to the engine (1), The selection lever 4 has a structure in which the selection rod 5 is connected to move back and forth while the shift lever 6 is connected to the selection rod 5 through the hinge 7.

이러한 종래 후륜구동방식의 자동변속기(2)는 운전자가 변속레바(6)를 조작하여 변속레인지를 선택하게 되면, 선택로드(5)가 전후로 이동되어 선택레바(4)를 매개로 자동변속기(2)의 메뉴얼레바(3)를 이동시키는 것에 의해 메뉴얼레바(3)와 연결된 밸브바디의 메뉴얼레바가 이동되어 운전자에 의해 선택된 레인지로 전환되게 된다.In the conventional rear wheel drive type automatic transmission 2, when the driver operates the shift lever 6 to select a shift range, the selection rod 5 is moved back and forth, and the automatic transmission 2 is selected via the selection lever 4. By moving the manual lever 3 of), the manual lever of the valve body connected to the manual lever 3 is moved to switch to the range selected by the driver.

상기한 구조로 된 종래 후륜구동방식의 자동변속기는 D레인지로 고속주행시 급정거를 하게 되면, 차량에 설치된 엔진과 자동변속기가 운동상태를 유지하려는 성질에 의해 엔진(1) 및 자동변속기(2)가 차량의 전면 방향으로 이동되게 되는 것에 의해 변속레바(6)나 선택로드(5) 및 선택레바(4)가 고정된 상태에서 자동변속기(2) 자체가 상대이동되면 결국에는 메뉴얼레바(3)가 상대이동된 것과 마찬가지로 되어, 고속주행레인지가 원하지 않게 갑자기 후진레인지(R레인지)로 전환되는 일이 발생하게 된다.The conventional rear wheel drive automatic transmission having the above-described structure has a sudden stop when driving at high speed in the D range, so that the engine 1 and the automatic transmission 2 are driven by the nature of the engine and the automatic transmission installed in the vehicle to maintain the movement state. If the automatic transmission 2 itself moves relative to the shift lever 6, the selection rod 5, and the selection lever 4 by being moved toward the front of the vehicle, the manual lever 3 will eventually be moved. In the same manner as the relative movement, the high-speed driving range undesirably switches to the reverse range (R range).

상기와 같이 주행레인지에서 갑자기 후진레인지로 레인지전환되면 자동변속기의 여러 부품들이 심하게 손상될 뿐 아니라 엔진의 시동이 꺼지게 되는 현상이 일어날 염려가 있었다.As described above, when the range is suddenly switched from the driving range to the reverse range, various parts of the automatic transmission may be severely damaged as well as the engine may be turned off.

이에 본 발명은 상기한 종래 자동변속기의 변속메카니즘에서 발생되는 결점을 해소하기 위해 발명된 것으로, 차량이 고속주행시에 급정거로 인해 발생되는 운동관성력에 의해 자동변속기 등이 이동되어 뜻하지 않은 레인지 변환이 이루어질때에 변속레인지를 순간적으로 N레인지(중립)로 전환되게 함으로서, 자동변속기의 여러 부품들의 손상을 효과적으로 방지할 수 있고 차량이 완전히 정지하여 전진방향으로 이동된 변속기가 원래의 위치로 복귀하여 재출발시에는 급정거 이전에 주행레인지로 주행할 수 있도록 된 자동변속기의 후진레인지 급전환방지장치를 제공함에 그 목적이 있다.Accordingly, the present invention is invented to solve the defects generated in the shift mechanism of the conventional automatic transmission, and the automatic transmission is moved by an inertial force generated by a sudden stop when the vehicle is driving at a high speed, thereby causing an unexpected range conversion. By shifting the shift range to the N range (neutral) instantaneously, it is possible to effectively prevent damage to the various parts of the automatic transmission, and when the vehicle is completely stopped and the transmission shifted to the forward direction returns to its original position, it restarts. It is an object of the present invention to provide a reverse range sudden change prevention device of an automatic transmission that is capable of traveling in a driving range before a sudden stop.

도 1은 본 발명에 따른 메뉴얼밸브에 솔레노이드밸브가 장착된 유압회로도.1 is a hydraulic circuit diagram equipped with a solenoid valve in a manual valve according to the present invention.

도 2는 종래 기술에 대한 자동변속기의 개략도.2 is a schematic diagram of an automatic transmission in the prior art;

*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

1 : 엔진 2 : 자동변속기1: engine 2: automatic transmission

3 : 메뉴얼레바 4 : 선택레바3: Manual lever 4: Selection lever

5 : 선택로드 6 : 변속레바5: select rod 6: shift lever

7 : 힌지 8 : 메뉴얼밸브7: hinge 8: manual valve

9 : 콘트롤러 10 : 솔레노이드밸브9: Controller 10: Solenoid Valve

상기한 바의 목적을 달성하기 위한 본 발명은, 자동변속기의 변속레바가 선택로드와 선택레바를 매개로 메뉴얼레바를 이동시키는 메뉴얼레바와 연결되고, 상기 메뉴얼레바의 밸브바디에는 R레인지 작동압유배출구와 D레인지 또는 다른 레인지 작동압유배출구가 각각 형성되며, 상기 배출구 사이에는 작동유압 공급라인이 연결된 자동변속기에 있어서, 상기 작동압유 공급라인에 콘트롤러와 연결된 솔레노이드밸브가 장착되고, 상기 콘트롤러는 차속감지센서와 연결되어, 감지된 차속의 가속도가 일정치(-10m/sec2) 이하일때에 상기 솔레노이드밸브에 전류를 인가시켜 작동압유 공급라인을 차단시켜 자동변속기의 유압회로계가 N레인지로 자동전환되는 구조로 되어 있다.The present invention for achieving the above object, the transmission lever of the automatic transmission is connected to the manual lever for moving the manual lever via the selection rod and the selection lever, the valve body of the manual lever R range operating pressure oil drainage An outlet and a D-range or other range hydraulic pressure oil outlet are respectively formed, and between the outlets is an automatic transmission connected with a hydraulic pressure supply line, and a solenoid valve connected to a controller is mounted on the hydraulic pressure supply line, and the controller is connected to a vehicle speed. Connected to the sensing sensor, when the detected acceleration of the vehicle is below a certain value (-10m / sec 2 ), current is applied to the solenoid valve to cut off the operating pressure oil supply line so that the hydraulic circuit system of the automatic transmission automatically switches to the N range. It becomes the structure that becomes.

이하 본 발명을 첨부된 예시도면을 참조로 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 메뉴얼밸브(8)의 유압회로도를 도시한 것인 바, 메뉴얼레바(3)가 연결된 밸브바디(8a)에 R레인지(후진레인지)의 작동압유배출구(8b)와 D레인지(주행레인지)의 작동압유배출구(8c)가 각각 형성되면서 이 배출구(8b,8c) 사이에 압유공급라인(L1)이 형성되어, 상기 메뉴얼레바(3)의 이동에 따라 밸브바디(8a)가 상응되게 이동되며, 운전자가 선택한 레인지에 따라 작동압유가 밸브바디(8a)를 통해 공급되게 되어 있다.1 shows a hydraulic circuit diagram of a manual valve 8 according to the present invention, the operating pressure oil outlet 8b of the R range (reverse range) and the valve body 8a to which the manual lever 3 is connected. The operating pressure oil outlet 8c of the D range (driving range) is formed, respectively, and a pressure oil supply line L1 is formed between the outlet ports 8b and 8c, and the valve body (3) is moved according to the movement of the manual lever 3. 8a) is moved correspondingly, and the operating pressure oil is supplied through the valve body 8a according to the range selected by the driver.

그리고 상기 압유공급라인(L1)으로 작동압유가 공급되지 않게 되면 자동변속기의 유압회로계는 자동적으로 N레인지(중립레인지)로 전환되게 되는데, 본 발명은 여기에 착상해서 발명된 것이다.And when the operating pressure oil is not supplied to the pressure oil supply line (L1), the hydraulic circuit system of the automatic transmission is automatically switched to the N range (neutral range), the invention is conceived invented here.

즉 도 1에 도시된 바와 같이, 상기 압유공급라인(L1)에 콘트롤러(9)와 연결된 솔레노이드밸브(10)가 장착되어, 이 솔레노이드밸브(10)의 솔레노이드에 전류가 인가되면 공급라인의 유로를 차단하게 되어 자동변속기의 유압회로계를 자동적으로 N레인지로 전환시켜 주게 된다.That is, as shown in Figure 1, the pressure oil supply line (L1) is equipped with a solenoid valve 10 connected to the controller 9, when the current is applied to the solenoid of the solenoid valve 10, the flow path of the supply line It shuts off and automatically changes the hydraulic circuit system of the automatic transmission to the N range.

여기서 상기 콘트롤러(9)는 차속을 측정하는 센서(도시되지 않음)와 연결되어, 설정된 샘플링시간마다 차량의 가속도를 연산하게 되는데, 만일에 차량이 고속으로 주행하다가 급정거로 인해 가속도가 일정치(본 실시예에서는 -10m/sec2)이하가 되면 상기 솔레노이드밸브(10)에 전류를 인가하여 상기 공급라인(L1)의 유로를 차단시켜줌으로써, 차량의 주행레인지가 N레인지로 전환되게 되어 차량을 운행중 엔진(1)이나 자동변속기(2)에 발생되는 운동관성으로 인해 후진레인지로 전환을 방지하게 된다.Here, the controller 9 is connected to a sensor (not shown) for measuring the vehicle speed, and calculates the acceleration of the vehicle at a set sampling time. If the vehicle is traveling at a high speed, the acceleration is constant due to the sudden stop. In the embodiment, when -10m / sec 2 ) or less, the current is applied to the solenoid valve 10 to cut off the flow path of the supply line L1, so that the driving range of the vehicle is switched to the N range and the vehicle is running. The inertia generated in the engine 1 or the automatic transmission 2 prevents the switching to the reverse range.

또한 콘트롤러(9)에서는 브레이크 작동여부를 검출하여 운전자가 재출발을 하기 위해 브레이크페달에서 발을 떼거나 솔레노이드 작동후 일정시간(3초가 바람직하나 차량의 특성에 따라 콘트롤러에서 변경가능함)이 경과되면 인가된 전류를 차단하여 급정거 이전의 주행레인지로 복귀되도록 하여 재출발을 가능하게 한다.In addition, the controller 9 detects whether the brake is actuated and releases the brake pedal for the driver to restart, or after a predetermined time (3 seconds is preferred but can be changed by the controller depending on the characteristics of the vehicle) after the solenoid is activated. The current is cut off and the vehicle is returned to the driving range before the sudden stop so that restarting is possible.

이상 설명한 바와 같이 본 발명에 따른 자동변속기의 후진레인지의 후진레인지 급전환 방지장치에 의하면, 차량의 고속 주행시 급정거로 인해 차량에 설치된 엔진과 자동변속기에 발생되는 운동관성력에 의해 주행레인지가 급작그럽게 후진레인지로 전환되는 것을 방지하여 자동변속기의 손상을 효과적으로 방지하고 엔진의 시동이 꺼지게 되는 것도 방지하는 효과가 있다.As described above, according to the reverse range reverse switching device of the reverse range of the automatic transmission according to the present invention, the driving range is suddenly reduced by the inertial force generated by the engine and the automatic transmission installed in the vehicle due to the sudden stop at high speed of the vehicle. By preventing the switch to the reverse range, it is effective to prevent damage to the automatic transmission and to prevent the engine from starting off.

Claims (1)

자동변속기(2)의 변속레바(6)가 선택로드(5)와 선택레바(4)를 매개로 메뉴얼밸브(8)를 이동시키는 메뉴얼레바(3)와 연결되고, 상기 메뉴얼밸브(8)의 밸브바디(8a)에는 R레인지 작동유압배출구(8b)와 D레인지 작동유압배출구(8c)가 각각 형성되며, 상기 배출구(8b,8c) 사이에는 작동압유공급라인(L1)이 연결된 자동변속기에 있어서, 상기 작동유압공급라인(L1)에 콘트롤러(9)와 연결된 솔레노이드밸브(10)가 설치되고상기 콘트롤러(9)는 차속 감지센서와 브레이크 스위치가 연결되어, 감지된 차 속의 가속도가 일정치(-10m/sec2)이하일때 상기 솔레노이드밸브(10)에 전류를 인가시켜 작동압유공급라인(L1)을 차단시켜, 자동변속기의 압유회로계가 N레인지로 자동전환되도록 하고 재출발시에는 급정거 이전의 주행레인지로 복귀되어 주행할 수 있도록 된 것을 특징으로 하는 자동변속기의 후진레인지 급전환방지장치.The shift lever 6 of the automatic transmission 2 is connected to the manual lever 3 for moving the manual valve 8 via the selection rod 5 and the selection lever 4, and the manual valve 8 In the valve body 8a, an R-range hydraulic oil outlet 8b and a D-range hydraulic oil outlet 8c are respectively formed, and between the outlets 8b and 8c, an automatic transmission having a hydraulic oil pressure supply line L1 is connected. The solenoid valve 10 connected to the controller 9 is installed in the working hydraulic pressure supply line L1, and the controller 9 is connected to a vehicle speed sensor and a brake switch so that the detected acceleration of the vehicle is constant (-). When 10m / sec 2 ) or less, the solenoid valve 10 is applied with current to cut off the operating pressure oil supply line L1 so that the hydraulic oil pressure circuit of the automatic transmission is automatically switched to the N-range. It is characterized by being able to drive back to the range Is reverse range sudden change prevention device of automatic transmission.
KR1019940032405A 1994-12-01 1994-12-01 Transmission KR970003536B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940032405A KR970003536B1 (en) 1994-12-01 1994-12-01 Transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940032405A KR970003536B1 (en) 1994-12-01 1994-12-01 Transmission

Publications (2)

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KR960021709A KR960021709A (en) 1996-07-18
KR970003536B1 true KR970003536B1 (en) 1997-03-20

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