KR20040015401A - Apparatus for controlling line pressure for hydraulic control system in an automatic transmission - Google Patents
Apparatus for controlling line pressure for hydraulic control system in an automatic transmission Download PDFInfo
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- KR20040015401A KR20040015401A KR1020020047481A KR20020047481A KR20040015401A KR 20040015401 A KR20040015401 A KR 20040015401A KR 1020020047481 A KR1020020047481 A KR 1020020047481A KR 20020047481 A KR20020047481 A KR 20020047481A KR 20040015401 A KR20040015401 A KR 20040015401A
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- pressure
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- feed back
- hydraulic
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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
- F16H61/0021—Generation or control of line pressure
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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
- F16H61/0003—Arrangement or mounting of elements of the control apparatus, e.g. valve assemblies or snapfittings of valves; Arrangements of the control unit on or in the transmission gearbox
- F16H61/0009—Hydraulic control units for transmission control, e.g. assembly of valve plates or valve units
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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
- F16H61/02—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
- F16H61/0262—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 hydraulic
- F16H61/0265—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 hydraulic for gearshift control, e.g. control functions for performing shifting or generation of shift signals
- F16H61/0267—Layout of hydraulic control circuits, e.g. arrangement of valves
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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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02039—Gearboxes for particular applications
- F16H2057/02043—Gearboxes for particular applications for vehicle transmissions
- F16H2057/02047—Automatic transmissions
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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
- F16H61/02—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
- F16H61/0262—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 hydraulic
- F16H61/0276—Elements specially adapted for hydraulic control units, e.g. valves
- F16H2061/0279—Details of hydraulic valves, e.g. lands, ports, spools or springs
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
Description
본 발명은 차량용 자동 변속기에 적용되는 유압 제어 시스템에 있어서의 라인압 제어장치에 관한 것이다.The present invention relates to a line pressure control device in a hydraulic control system applied to an automatic transmission for a vehicle.
예컨데, 차량용 자동 변속기는 토크 컨버터와, 이 토크 컨버터에 연결되어 있는 다단 변속기어 메카니즘인 파워 트레인을 보유하고 있으며, 차량의 주행상태에 따라 상기 파워 트레인의 작동요소 중 어느 하나의 작동요소를 선택적으로 작동시키기 위한 유압 제어 시스템을 보유하게 된다.For example, an automatic transmission for a vehicle has a torque converter and a power train, which is a multi-stage gear mechanism connected to the torque converter, and selectively selects one of the operating elements of the power train according to the driving state of the vehicle. It will have a hydraulic control system for operation.
이러한 자동 변속기에 있어서의 유압 제어 시스템에 있어서는, 오일펌프로부터 생성된 유압이 일정한 라인압으로 조절하여 유압 제어 시스템의 제어압 및 작동으로 공급하게 되는데, 종래 라인압 제어장치의 일예를 살펴보면, 도 4에서와 같다.In the hydraulic control system in such an automatic transmission, the hydraulic pressure generated from the oil pump is adjusted to a constant line pressure to supply the control pressure and the operation of the hydraulic control system. Looking at an example of the conventional line pressure control apparatus, FIG. Same as in
오일펌프(202)로부터 생성된 유압이 레귤레이터 밸브(204)에 의하여 일정한 라인압으로 조절되면, 라인압의 일부는 토오크 컨버터 컨트롤 밸브(206)에 의해 다시 일정하게 조절되어 댐퍼 클러치 솔레노이드 밸브(S1)에 의하여 제어되는 댐퍼 클러치 컨트롤 밸브(208)로 공급된다.When the hydraulic pressure generated from the oil pump 202 is regulated to a constant line pressure by the regulator valve 204, a part of the line pressure is constantly regulated again by the torque converter control valve 206 to damper clutch solenoid valve S1. Supplied to the damper clutch control valve 208.
그리고 일부의 라인압은 이의 라인압 보다 낮은 일정한 압으로 감합시키는 리듀싱 밸브(210)을 통해 상기 댐퍼 클러치 컨트롤 밸브(208)로 공급되거나, 운전자의 의지에 따라 포트 변환이 이루어지면서 유압 제어수단 및 분배수단을 통해 각 마찰요소로 공급될 수 있도록 하는 매뉴얼 밸브(212)로 공급되는 구성을 갖는다.And some of the line pressure is supplied to the damper clutch control valve 208 through a reducing valve 210 to be fitted to a constant pressure lower than its line pressure, or the port control is made according to the driver's will, the hydraulic control means and It has a configuration that is supplied to the manual valve 212 to be supplied to each friction element through the distribution means.
또한, 상기 레귤레이터 밸브(204)는 상기 리듀싱 밸브(210)와의 사이에 라인압 제어용 솔레노이드 밸브(S2)를 개재시켜 연통되며, 상기 매뉴얼 밸브(212)와는 후진압 관로(214)로 연통된다.In addition, the regulator valve 204 is communicated with the reducing valve 210 via the line pressure control solenoid valve (S2), and communicates with the manual valve 212 in the reverse pressure pipeline (214).
이에 따라 후진 레인지 이외에는 상기 라인압 제어용 솔레노이드 밸브(S2)의 제어에 의하여 라인압을 제어하게 되는데, 기본적으로 레귤레이터 밸브의 라인압 제어는 스프링(216)과 피드 백 라인(218)으로부터 공급되는 압력에 의한 평형에 의하여 이루어지게 된다.Accordingly, the line pressure is controlled by the control of the line pressure control solenoid valve S2 except the reverse range. Basically, the line pressure control of the regulator valve is applied to the pressure supplied from the spring 216 and the feed back line 218. By equilibrium by
그러나 상기와 같이 라인압을 제어하는 경우에는 상기 피드 백 라인이 주행,후진, 중립등 모든 상태에서 하나만 존재하므로 피드백 수용면적이 동일하게 되어 항상 동일한 압력으로 제어를 하게 된다.However, in the case of controlling the line pressure as described above, since there is only one feed back line in all states such as driving, reversing, and neutral, the feedback receiving area becomes the same, and the control is always performed at the same pressure.
이에 따라 높은 라인압을 필요로 하지 않는 중립 레인지에서도 라인압이 고압으로 조성되어 오일펌프의 구동에 따른 동력손실을 초래함은 물론 이에 따른 연비 상승의 원인이 된다는 문제점을 내포하고 있다.Accordingly, even in a neutral range that does not require a high line pressure, the line pressure is formed at a high pressure, which causes power loss due to the operation of the oil pump, as well as causing fuel consumption.
따라서 본 발명은 상기와 같은 문제점을 해결하기 위하여 발명된 것으로서, 본 발명의 목적은 높은 라인압을 필요로 하지 않는 중립 레인지에서 라인압을 최소화함으로써, 오일펌프의 구동부하를 줄여 동력손실을 최소화하고, 연비를 향상시킬 수 있는 자동 변속기 유압 제어 시스템의 라인압 제어장치를 제공한다.Therefore, the present invention has been invented to solve the above problems, the object of the present invention is to minimize the line pressure in the neutral range that does not require high line pressure, to reduce the driving load of the oil pump to minimize the power loss In addition, the present invention provides a line pressure control device of an automatic transmission hydraulic control system that can improve fuel economy.
도 1은 본 발명이 적용되는 라인압 제어장치의 N 레인에서의 유압 계통도.1 is a hydraulic system diagram in the N lane of the line pressure control device to which the present invention is applied.
도 2는 본 발명에 의한 D 레인지에서의 라인압 제어 계통도.2 is a line pressure control system diagram in the D range according to the present invention.
도 3은 본 발명에 의한 R 레인지에서의 라인압 제어 계통도.3 is a line pressure control system diagram in the R range according to the present invention.
도 5는 종래 라인압 제어 유압 계통도이다.5 is a conventional line pressure control hydraulic system diagram.
이를 실현하기 위하여 본 발명은, 오일펌프로부터 생성된 유압이 레귤레이터 밸브에 의하여 일정의 압력으로 제어되어 일부는 토크 컨버터 제어용으로 공급되고, 일부는 매뉴얼 밸브를 통해 변속에 필요한 각각의 마찰요소로 선택적인 공급이 이루어지는 자동 변속기의 유압 제어 시스템에 있어서,In order to realize this, the present invention provides that the hydraulic pressure generated from the oil pump is controlled to a constant pressure by a regulator valve, partly supplied for torque converter control, and partly selected by each friction element required for shifting through a manual valve. In the hydraulic control system of the automatic transmission that is supplied,
상기 레귤레이터 밸브와 매뉴얼 밸브 사이에 중립과 전,후진시 피드백 압을 다르게 할 수 있는 무부하 밸브를 배치하여 이루어지는 자동 변속기 유압 제어 시스템의 라안압 제어장치를 제공한다.Provided is a Raan pressure control device of an automatic transmission hydraulic control system formed by disposing a no-load valve that can be different in the feedback pressure during neutral, forward and reverse between the regulator valve and the manual valve.
이하, 상기의 목적을 구체적으로 실현할 수 있는 본 발명의 바람직한 실시예를 첨부한 도면에 의거하여 상세히 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention that can specifically realize the above object will be described in detail.
도 1은 본 발명이 적용되는 라인압 제어장치의 유압 계통도로서,오일펌프(2)로부터 생성된 유압이 레귤레이터 밸브(4)에 의하여 일정한 라인압으로 조절되면, 라인압의 일부는 토오크 컨버터 컨트롤 밸브(6)에 의해 다시 일정하게 조절되어 댐퍼 클러치 솔레노이드 밸브(S1)에 의하여 제어되는 댐퍼 클러치 컨트롤 밸브(8)로 공급된다.1 is a hydraulic system diagram of a line pressure control device to which the present invention is applied. When the hydraulic pressure generated from the oil pump 2 is regulated to a constant line pressure by the regulator valve 4, a part of the line pressure is a torque converter control valve. Constantly adjusted by 6, it is supplied to the damper clutch control valve 8 controlled by the damper clutch solenoid valve S1.
그리고 일부의 라인압은 이의 라인압 보다 낮은 일정한 압으로 감합시키는 리듀싱 밸브(10)을 통해 상기 댐퍼 클러치 컨트롤 밸브(8)로 공급되거나, 운전자의 의지에 따라 포트 변환이 이루어지면서 유압 제어수단 및 분배수단을 통해 각 마찰요소로 공급될 수 있도록 하는 매뉴얼 밸브(12)로 공급되는 구성을 갖는다.And some of the line pressure is supplied to the damper clutch control valve (8) through the reducing valve (10) for fitting to a constant pressure lower than its line pressure, or the port control is made at the driver's will while the hydraulic control means and It has a configuration that is supplied to the manual valve 12 to be supplied to each friction element through the distribution means.
또한, 상기 레귤레이터 밸브(4)는 상기 리듀싱 밸브(10)와의 사이에 라인압 제어용 솔레노이드 밸브(S2)를 개재시켜 연통되며, 상기 매뉴얼 밸브(12)와는 후진압 관로(14)로 연통된다.In addition, the regulator valve 4 communicates with the reducing valve 10 via a line pressure control solenoid valve S2, and communicates with the manual valve 12 in a reverse pressure pipeline 14.
이에 따라 후진 레인지 이외에는 상기 라인압 제어용 솔레노이드 밸브(S2)의 제어에 의하여 라인압을 제어하게 되는 것이다.Accordingly, the line pressure is controlled by the control of the line pressure control solenoid valve S2 except the reverse range.
이러한 라인압 제어장치에 있어서, 본 발명은 상기 레귤레이터 밸브(4)와 매뉴얼 밸브(12) 사이에 중립과 전,후진시 피드백 압을 다르게 할 수 있는 무부하 밸브(20)를 배치한 것이다.In such a line pressure control device, the present invention is arranged between the regulator valve 4 and the manual valve 12, the non-load valve 20 which can vary the feedback pressure during the neutral, forward and backward.
상기 무부하 밸브(20)는 중립 레인지에서 1차 제어된 라인압을 다시 레귤레이터 밸브(4)의 피드 백 제어압으로 공급하여 라인압을 최소화할 수 있게 되는 것이다.The no-load valve 20 is to supply the line pressure controlled in the neutral range back to the feed back control pressure of the regulator valve 4 to minimize the line pressure.
이러한 무부하 밸브(20)의 구성을 살펴보면, 밸브보디는 매뉴얼 밸브(12)의후진압 관로(22)로부터 후진압을 공급받는 제1포트(24)와, 매뉴얼 밸브(12)의 D 레인지 압 관로(26)로부터 유압을 공급받는 제2포트(28)와, 오일펌프(2)로부터 매뉴얼 밸브(12)로 유압을 공급하는 관로(30)에서 분기된 유압을 공급받는 제3포트(32)와, 상기 제3포트(32)로 공급되는 유압을 레귤레이터 밸브(4)의 피드 백 압으로 공급하는 제4포트(34)를 포함하여 이루어진다.Looking at the configuration of such a non-load valve 20, the valve body is the first port 24 receives the reverse pressure from the backward pressure line 22 of the manual valve 12, and the D range pressure line of the manual valve 12 ( A second port 28 supplied with hydraulic pressure from the 26; a third port 32 supplied with hydraulic pressure branched from the conduit 30 supplying hydraulic pressure from the oil pump 2 to the manual valve 12; It comprises a fourth port 34 for supplying the hydraulic pressure supplied to the third port 32 to the feed back pressure of the regulator valve (4).
상기 밸브보디에 내장되는 밸브스풀은 상기 제1포트(24)로 공급되는 유압에 작용하는 제1 랜드(36)와, 상기 제2 포트(28)로 공급되는 유압에 작용하며, 상기 제3포트(32)를 선택적으로 개폐하는 제2 랜드(38)와, 상기 제2 랜드(38)와 함께 선택적으로 상기 제3포트(32)와 제4포트(34)를 연통시켜 주는 제3랜드(40)를 포함하여 이루어지며, 상기 제3랜드(40)와 밸브보디 사이에는 탄성부재(42)가 배치된다.The valve spool embedded in the valve body acts on the first land 36 acting on the hydraulic pressure supplied to the first port 24 and the oil pressure supplied to the second port 28, and the third port. A second land 38 for selectively opening and closing the 32 and a third land 40 for selectively communicating the third port 32 and the fourth port 34 together with the second land 38. ), And an elastic member 42 is disposed between the third land 40 and the valve body.
그리고 상기 제4포트(34)로부터 공급되는 유압이 레귤레이터 밸브(4)의 또 다른 피드 백 압으로 작용하게 위하여 기존 피드 백 압에 작용하는 밸브스풀의 제1 피드 백 랜드(50)의 일측을 연장하여 제2 피드 백 랜드(52)를 추가 형성하고, 상기 제1 피드 백 랜드(50)에 피드 백 압을 공급하는 제1 피드 백 유압 입력포트(54)에 이웃하여 상기 제2 피드 백 랜드(52)에 상기 제4 포트(34)로부터 피드 백 유압이 공급되는 제2 피드 백 유압 입력포트(56)를 형성하였다.In addition, the hydraulic pressure supplied from the fourth port 34 extends one side of the first feed back land 50 of the valve spool which acts on the existing feed back pressure in order to act as another feed back pressure of the regulator valve 4. To form a second feed back land 52, and adjacent to the first feed back hydraulic input port 54 for supplying a feed back pressure to the first feed back land 50. 52, a second feed back hydraulic input port 56 through which the feed back hydraulic pressure is supplied from the fourth port 34 is formed.
이에 따라 중립 상태에서는 매뉴얼 밸브(12)로부터 후진압 및 D 레인지압이 공급되지 않는 바, 무부하 밸브(20)는 도 1에서와 같이, 탄성부재(42)의 탄발력에 의하여 밸브스풀이 도면에서 좌측으로 이동된 상태를 유지하면서 제3포트(32)와 제4포트(34)를 개방시킴으로써, 1차 라인압 조절이 이루어져 매뉴얼 밸브(12)로 공급되는 유압의 일부가 레귤레이터 밸브(4)의 제2 피드백 유압 입력포트(56)로 공급된다.Accordingly, in the neutral state, since the reverse pressure and the D range pressure are not supplied from the manual valve 12, the non-load valve 20 is shown in FIG. 1 by the elastic force of the elastic member 42 in the valve spool drawing. By opening the third port 32 and the fourth port 34 while maintaining the movement to the left side, the primary line pressure is adjusted so that a part of the hydraulic pressure supplied to the manual valve 12 is discharged from the regulator valve 4. The second feedback hydraulic input port 56 is supplied.
그러면 레귤레이터 밸브(4)에서는 제1, 2 피드 백 유압이 공급됨으로써, 밸브스풀이 최대한 도면에서 좌측으로 이동하여 오일펌프(2)로부터 공급되는 유압의 많은 량을 리턴시키게 되어 라인압은 최소화되는 것이다.Then, the regulator valve 4 is supplied with the first and second feed back hydraulic pressure, so that the valve spool moves to the left in the drawing as much as possible to return a large amount of the hydraulic pressure supplied from the oil pump 2, thereby minimizing the line pressure. .
그리고 D 레인지 주행 및 후진 주행의 경우에 있어서는 도 2와 도 3에서와 같이, D 레인지 압 또는 후진압이 무부하 밸브(20)의 제어압으로 공급됨으로써, 무부하 밸브(20)의 밸브스풀이 도면에서 우측으로 이동되어 제3포트(32)를 폐쇄시켜 제2 피드 백 유압의 공급을 차단하게 된다.2 and 3, in the case of the D range travel and the reverse travel, the D range pressure or the reverse pressure is supplied to the control pressure of the no-load valve 20, so that the valve spool of the no-load valve 20 is shown in the drawing. It is moved to the right to close the third port 32 to cut off the supply of the second feed back hydraulic pressure.
이에 따라 레귤레이터 밸브(4)에서는 기존과 동일하게 라인압을 고압으로 조성하여 자동변속기의 각 부분에 공급하게 되는 것이다.Accordingly, in the regulator valve 4, the line pressure is formed at a high pressure in the same manner as the conventional one, and is supplied to each part of the automatic transmission.
이상에서와 같이 본 발명에 의하면, 중립 레인지에서 제2의 피드 백 유압을 레귤레이터 밸브로 공급하여 라인압이 최소로 조성되도록 함으로써, 오일펌프의 구동부하를 줄여 동력손실을 최소화하고, 연비를 향상시킬 수 있는 발명인 것이다.As described above, according to the present invention, the second feed back hydraulic pressure is supplied to the regulator valve in the neutral range to minimize the line pressure, thereby reducing the driving load of the oil pump to minimize power loss and improve fuel efficiency. It is an invention that can be.
Claims (4)
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| Application Number | Priority Date | Filing Date | Title |
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| KR10-2002-0047481A KR100460889B1 (en) | 2002-08-12 | 2002-08-12 | Apparatus for controlling line pressure for hydraulic control system in an automatic transmission |
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| KR100279422B1 (en) * | 1997-11-06 | 2001-03-02 | 정몽규 | Line pressure control system for automatic transmission hydraulic system |
| KR100282876B1 (en) * | 1997-11-14 | 2001-03-02 | 정몽규 | Hydraulic Control System of Automatic Transmission |
| KR100285489B1 (en) * | 1997-12-31 | 2001-06-01 | 정몽규 | Device for controlling line pressure of automatic transmission |
| KR100387807B1 (en) * | 2000-12-22 | 2003-06-18 | 현대자동차주식회사 | system for varying line pressure of auto transmission |
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