KR100302745B1 - Gear train for automatic transmission - Google Patents

Gear train for automatic transmission Download PDF

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KR100302745B1
KR100302745B1 KR1019970073322A KR19970073322A KR100302745B1 KR 100302745 B1 KR100302745 B1 KR 100302745B1 KR 1019970073322 A KR1019970073322 A KR 1019970073322A KR 19970073322 A KR19970073322 A KR 19970073322A KR 100302745 B1 KR100302745 B1 KR 100302745B1
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South Korea
Prior art keywords
gear
speed
planetary gear
planetary
range
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KR1019970073322A
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Korean (ko)
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KR19990053633A (en
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박종술
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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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H3/72—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously
    • F16H3/721—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously with an energy dissipating device, e.g. regulating brake or fluid throttle, in order to vary speed continuously
    • 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
    • F16H57/08—General details of gearing of gearings with members having orbital motion
    • F16H57/082—Planet carriers
    • 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
    • F16H57/08—General details of gearing of gearings with members having orbital motion
    • F16H57/10—Braking arrangements
    • 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
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
    • F16H2200/0047—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising five forward 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
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
    • F16H2200/2046—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with six engaging means

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structure Of Transmissions (AREA)

Abstract

PURPOSE: A gear train for an automatic transmission is provided to simplify the control process by operating a small number of friction elements in the D(Drive) range. CONSTITUTION: A gear train has a first and a second planetary gears(PG1,PG2), a first, a second, a third and a fourth clutches(C1,C2,C3,C4) to variably connect the specific element of the first and second planetary gears, and a first and a second brakes(B1,B2) to variably connect the specific element of the first and second planetary gears to a transmission housing(3). The first planetary gear has an element connected to an input shaft(1), an element connected to the input shaft and the transmission housing, and an element fixed to a transfer drive gear(5). The second planetary gear has an element fixed to one element of the first planetary gear, an element fixed to the transmission housing, and an element connected to the transmission housing and two element of the first planetary gear. The clutches and the brakes are selectively operated and released by a transmission control unit, and forward five speeds and backward one speed are realized.

Description

자동변속기용 기어 트레인Gear train for automatic transmission

본 발명은 자동변속기용 기어 트레인에 관한 것으로서, 보다 상세하게는 클러치와 브레이크 및 유성기어를 효율적으로 조합하여 각 레인지에서 제어되는 클러치 및 브레이크의 수를 감소시키는 자동변속기용 기어 트레인에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gear train for an automatic transmission, and more particularly, to a gear train for an automatic transmission in which the clutch, the brake, and the planetary gear are effectively combined to reduce the number of clutches and brakes controlled in each range.

일반적으로 자동변속기는 트랜스밋션 제어유닛(TCU)이 제어하는 유압제어 시스템에 의하여 작동 및 비작동되는 마찰요소가 이에 연결되는 복합 유성기어의 각 요소들을 제어함으로써 다단 변속을 자동으로 실현할 수 있도록 구성된다.In general, an automatic transmission is configured to automatically realize a multi-stage shift by controlling each element of a compound planetary gear, which is operated and deactivated by a hydraulic control system controlled by a transmission control unit (TCU), connected thereto. .

이와 같이 다단 변속을 실현하도록 유성기어와 마찰요소의 조합으로 구성되는 것을 기어 트레인이라고 통상적으로 지칭한다.Such a gear train is commonly referred to as a combination of a planetary gear and a friction element to realize multi-stage shifting.

이러한 기어 트레인은 실현할 목표 변속단수에 따라 다양하게 구성되며, 특히, 미국 특허 제5141477호의 기어 트레인은 자동으로 다단 변속을 실현함에 있어서, 더블 피니언 유성기어를 정지시키기 위하여 브레이크를 설치하고, D레인지에서 클러치와 브레이크 6개 모두를 작동시키도록 구성되어 있다.These gear trains are configured in various ways according to the target shift speed to be realized, and in particular, the gear train of US Pat. No. 451477 is provided with a brake to stop the double-pinion planetary gear in the automatic D-speed, and in the D-range. It is configured to activate all six clutches and brakes.

그러나 상기와 같은 자동변속기용 기어 트레인은 한 요소를 특정 변속단에서만 제어하기 위하여 마찰요소를 사용하고, D레인지에서 많은 개수의 마찰요소를 작동케 하므로 제어를 복잡화시키는 단점이 있다.However, the above-described gear train for an automatic transmission uses a friction element to control one element only at a specific shift stage, and operates a large number of friction elements in the D range, thereby complicating control.

따라서 본 발명은 상기와 같은 단점을 지양하기 위하여 창출된 것으로서, 본 발명의 목적은 D레인지에서 적은 개수의 마찰요소를 작동케 하여 제어를 단순화시키는 자동변속기용 기어 트레인을 제공하는 데 있다.Accordingly, the present invention has been made to avoid the above disadvantages, and an object of the present invention is to provide a gear train for an automatic transmission that operates a small number of friction elements in the D range to simplify the control.

이를 실현하기 위하여 본 발명에 따른 자동변속기용 기어 트레인은 특정 요소끼리 고정 및 가변 연결되는 2개의 유성기어; 이를 제어하여 전진 5속과 후진 1속을 실현하도록 입력축과 유성기어의 특정 요소를 가변 연결하고, 유성기어의 특정 요소를 변속기 하우징에 가변 연결하는 6개의 마찰요소를 포함한다.In order to realize this, the gear train for an automatic transmission according to the present invention includes two planetary gears fixed and variably connected to specific elements; It includes six friction elements that variably connect the input shaft and the specific elements of the planetary gear and control the specific elements of the planetary gear to the transmission housing so as to control the 5 forward speed and 1 reverse speed.

보다 구체적으로 보면, 본 발명에 따른 자동변속기용 기어 트레인은 입력축에 가변 연결되는 요소, 입력축 및 변속기 하우징에 가변 연결되는 요소, 출력축으로 동력을 전달하는 트랜스퍼 드라이브 기어에 고정 연결되는 요소를 갖는 제1유성기어;More specifically, the gear train for an automatic transmission according to the present invention is a first variable having an element that is variablely connected to the input shaft, an element that is variablely connected to the input shaft and the transmission housing, an element fixedly connected to the transfer drive gear for transmitting power to the output shaft. Planetary gears;

상기 제1유성기어의 한 요소에 고정 연결되는 요소, 변속기 하우징에 고정 연결되는 요소, 변속기 하우징에 가변 연결되고 제1유성기어의 2요소에 각각 가변 연결되는 요소를 갖는 제2유성기어;A second planetary gear having an element fixedly connected to one element of the first planetary gear, an element fixedly connected to the transmission housing, an element variably connected to the transmission housing and variably connected to two elements of the first planetary gear;

상기와 같이 고정 및 가변 연결되는 제1,2유성기어가 입력축으로 전달되는 입력을 전진 5단과 후진 1단으로 변속시켜 트랜스퍼 드라이브 기어로 전달할 수 있도록 제1,2유성기어의 특정 요소를 입력축 및 상기 특정 요소 상호간에 가변 연결하는 클러치 수단, 제1,2유성기어의 특정 요소를 변속기 하우징에 가변 연결하는 브레이크 수단을 포함한다.The first and second planetary gears, which are fixed and variably connected as described above, transfer specific inputs of the first and second planetary gears to the transfer drive gear by shifting the inputs transmitted to the input shaft to the 5th forward and the 1st reverse gear and transmitting them to the input shaft and the input shaft. Clutch means for variably connecting particular elements to one another, and brake means for variably connecting particular elements of the first and second planetary gears to the transmission housing.

이하 본 발명의 바람직한 구성 및 작용을 첨부한 도면에 의거하여 보다 상세히 설명한다.BEST MODE Hereinafter, preferred configurations and operations of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 관련하는 자동변속기용 기어 트레인의 구성도이다.1 is a configuration diagram of a gear train for an automatic transmission according to the present invention.

도 2는 본 발명에 관련하는 자동변속기용 기어 트레인의 각 변속단변 마찰요소 작동표이다.Fig. 2 is a table of operation of each shift stage friction element of the gear train for an automatic transmission according to the present invention.

도 3은 본 발명에 관련하는 자동변속기용 기어 트레인의 D레인지 1속시 변속비를 도시한 속도선도이다.3 is a speed diagram showing a speed ratio of the D range 1 speed of the gear train for an automatic transmission according to the present invention.

도 4는 본 발명에 관련하는 자동변속기용 기어 트레인의 D레인지 2,3,4속시 변속비를 도시한 속도선도이다.4 is a speed diagram showing speed ratios at speeds D, 2, 3 and 4 of the gear train for an automatic transmission according to the present invention.

도 5는 본 발명에 관련하는 자동변속기용 기어 트레인의 D레인지 5속시 변속비를 도시한 속도선도이다.FIG. 5 is a speed diagram illustrating a speed ratio of the D range 5 speed of the gear train for an automatic transmission according to the present invention. FIG.

도 6은 본 발명에 관련하는 자동변속기용 기어 트레인의 R레인지 1속시 변속비를 도시한 속도선도이다.Fig. 6 is a speed diagram showing the speed ratio at R range 1 speed of the gear train for automatic transmission according to the present invention.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

1:입력축, 3:변속기 하우징, 5:트랜스퍼 드라이브 기어, B1,B2:제1,2브레이크, C1,C2,C3,C4:제1,2,3,4클러치, PG1,PG2:제1,2유성기어1: input shaft, 3: transmission housing, 5: transmission drive gear, B1, B2: 1st, 2nd brake, C1, C2, C3, C4: 1st, 2, 3, 4 clutch, PG1, PG2: 1st, 2 planetary gear

도 1은 본 발명에 관련하는 자동변속기용 기어 트레인의 구성도로서, 유성기어 2개와 마찰요소 6개로 전진 5속과 후진 1속을 실현할 수 있도록 구성된다.1 is a configuration diagram of a gear train for an automatic transmission according to the present invention, and is configured to realize five forward speeds and one reverse speed with two planetary gears and six friction elements.

즉, 본 구성의 기어 트레인은 제1,2유성기어(PG1,PG2), 이 제1유성기어(PG1)의 특정 요소를 입력축(1)에 가변 연결하고, 제1,2유성기어(PG1,PG2)의 특정 요소를 상호 가변 연결하는 클러치 수단인 제1,2,3,4클러치(C1,C2,C3,C4), 제1,2유성기어(PG1,PG2)의 특정 요소를 변속기 하우징(3)에 가변 연결하는 브레이크 수단인 제1,2브레이크(B1,B2)를 구비한다.That is, the gear train of the present configuration variably connects the first and second planetary gears PG1 and PG2 and specific elements of the first planetary gear PG1 to the input shaft 1, and the first and second planetary gears PG1, Specific elements of the first, second, third and fourth clutches C1, C2, C3 and C4 and the first and second planetary gears PG1 and PG2 which are clutch means for variably connecting specific elements of the PG2 are transferred to the transmission housing ( And first and second brakes B1 and B2, which are brake means for variable connection to 3).

상기 제1유성기어(PG1)는 입력축(1)에 가변 연결되는 요소, 입력축(1) 및 변속기 하우징(3)에 가변 연결되는 요소, 출력축으로 동력을 전달하는 트랜스퍼 드라이브 기어(5)에 고정 연결되는 요소를 갖는다.The first planetary gear PG1 is fixedly connected to an element that is variably connected to the input shaft 1, an element that is variably connected to the input shaft 1 and the transmission housing 3, and a transfer drive gear 5 that transmits power to the output shaft. It has an element

상기 제1유성기어(PG1)는 싱글 피니언 유성기어로 구성되며, 선기어(S1)가 제1클러치(C1)에 의하여 입력축에 가변 연결되고, 캐리어(Ca1)가 제2클러치(C2), 제2브레이크(B2)에 의하여 입력축(1) 및 변속기 하우징(3)에 각각 가변 연결되며, 링기어(R1)가 트랜스퍼 드라이브 기어(5)에 고정 연결되어 구성된다.The first planetary gear PG1 includes a single pinion planetary gear, the sun gear S1 is variably connected to the input shaft by the first clutch C1, and the carrier Ca1 is the second clutch C2, the second. The brake B2 is variably connected to the input shaft 1 and the transmission housing 3, respectively, and the ring gear R1 is fixedly connected to the transfer drive gear 5.

그리고 제2유성기어(PG2)는 제1유성기어(PG1)의 한 요소에 고정 연결되는 요소, 변속기 하우징(3)에 고정 연결되는 요소, 변속기 하우징(3)에 가변 연결되고 제1유성기어(PG1)의 2요소에 각각 가변 연결되는 요소를 갖는다.The second planetary gear PG2 is an element fixedly connected to one element of the first planetary gear PG1, an element fixedly connected to the transmission housing 3, a variable connection to the transmission housing 3, and a first planetary gear ( Each of the two elements of PG1) has an element variablely connected.

상기 제2유성기어(PG2)는 더블 피니언 유성기어로 구성되며, 선기어(S2)가 제1유성기어(PG1)의 선기어(S1)에 고정 연결되고, 캐리어(Ca2)가 변속기 하우징(3)에 고정 연결되며, 링기어(R2)가 제1브레이크(B1)에 의하여 변속기 하우징(3)에 가변 연결되고 제3,4클러치(C3,C4)에 의하여 제1유성기어(PG1)의 캐리어(Ca1)와 링기어(R1)에 각각 가변 연결되어 구성된다.The second planetary gear PG2 includes a double pinion planetary gear, the sun gear S2 is fixedly connected to the sun gear S1 of the first planetary gear PG1, and the carrier Ca2 is connected to the transmission housing 3. It is fixedly connected, the ring gear (R2) is variably connected to the transmission housing (3) by the first brake (B1) and the carrier (Ca1) of the first planetary gear (PG1) by the third, fourth clutch (C3, C4) ) And ring gear (R1) is configured to be variable.

상술한 바와 같이 구성된 자동변속기용 기어 트레인은 차속 및 스로틀 개도와 같은 차량의 운행 상태에 따라 트랜스밋션 제어유닛(TCU)이 유압제어 시스템을 제어함에 따라 제1,2,3,4클러치(C1,C2,C3,C4)와 제1,2브레이크(B1,B2)가 도 2에 도시된 바와 같이 선택적으로 작동 및 해방되면서 전진 5속과 후진 1속을 실현하게 된다.In the gear train for the automatic transmission configured as described above, the transmission control unit (TCU) controls the hydraulic control system according to the driving state of the vehicle such as the vehicle speed and the throttle opening, so that the first, second, third and fourth clutches C1, C2, C3, C4 and the first and second brakes B1 and B2 are selectively operated and released as shown in FIG. 2 to realize the fifth forward speed and the first reverse speed.

즉, D레인지 1속 상태에서는 제3클러치(C3)가 작동되므로 제1,2유성기어(PG1,PG2)는 레버 해석에 따라, 도 3에 도시된 바와 같은 제1레버(L1)를 형성하게 된다.That is, since the third clutch C3 is operated in the D range 1 speed state, the first and second planetary gears PG1 and PG2 form the first lever L1 as shown in FIG. 3 according to the lever analysis. do.

이 제1레버(L1)는 제1,2유성기어(PG1,PG2)의 각 요소를 의미하는 제1,2,3,4노드(N1,N2,N3,N4)로 표시된다. 이들 각 노드가 의미하는 유성기어와의 관계는 도 3의 도시로 대치한다.The first lever L1 is represented by first, second, third, and fourth nodes N1, N2, N3, and N4, which represent respective elements of the first and second planetary gears PG1 and PG2. The relationship with the planetary gear which each of these nodes means is replaced by the illustration of FIG.

(D레인지 1속)(D range 1 speed)

D레인지 1속에서는 상기 제3클러치(C3)와 제1클러치(C1)가 작동되므로 제1노드(N1)가 입력 요소, 제4노드(N4)가 반력요소로 된다.In the D range 1 speed, since the third clutch C3 and the first clutch C1 are operated, the first node N1 is an input element and the fourth node N4 is a reaction element.

따라서 제1노드(N1)의 입력에 대한 위치와 제4노드(N4)를 연결하면, 1속 선도(l1)가 된다. 이 때 출력 요소인 제3노드(N3)에서 수직 방향의 크기는 감속된 D레인지 1속의 속도비(D1)이다.Accordingly, when the position of the input of the first node N1 and the fourth node N4 are connected, the first speed line l1 is obtained. At this time, the size of the vertical direction in the third node N3 as the output element is the speed ratio D1 of the decelerated D range 1 speed.

그리고 D레인지 2,3속 상태에서는 제4클러치(C4)가 작동되므로 제1,2유성기어(PG1,PG2)는 레버 해석에 따라, 도 4에 도시된 바와 같은 제2레버(L2)를 형성하게 된다.Since the fourth clutch C4 is operated in the D range 2 and 3 speed state, the first and second planetary gears PG1 and PG2 form the second lever L2 as shown in FIG. 4 according to the lever analysis. Done.

이 제2레버(L2)는 제1,2유성기어(PG1,PG2)의 각 요소를 의미하는 제1,2,3,4노드(N1,N2,N3,N4)로 표시된다. 이들 각 노드가 의미하는 유성기어와의 관계는 도 4의 도시로 대치한다.The second lever L2 is represented by first, second, third and fourth nodes N1, N2, N3 and N4, which represent respective elements of the first and second planetary gears PG1 and PG2. The relationship with the planetary gear which each of these nodes means is replaced by the illustration of FIG.

(D레인지 2속)(D-range 2 speed)

상기와 같은 D레인지 1속에서 차량의 운행 상태가 2속 조건이면 트랜스밋션 제어유닛(TCU)은 제1클러치(C1)가 작동되는 상태에서 제3클러치(C3)를 해방시키고 제4클러치(C4)를 작동시켜 D레인지 2속을 실현시킨다.If the driving state of the vehicle is the second speed condition in the D range 1 speed as described above, the transmission control unit TCU releases the third clutch C3 while the first clutch C1 is operated and the fourth clutch C4. ) To achieve D range 2 speed.

D레인지 2속에서는 제4클러치(C4)가 작동되므로 제1노드(N1)가 입력 요소, 제4노드(N4)가 반력요소로 된다.In the second range D speed, the fourth clutch C4 is operated so that the first node N1 is an input element and the fourth node N4 is a reaction element.

따라서 제1노드(N1)의 입력에 대한 위치와 제4노드(N4)를 연결하면, 2속 선도(l2)가 된다. 이 때 출력 요소인 제3노드(N3)에서 수직 방향의 크기는 1속의 속도비(D1)보다는 크지만 역시 감속된 D레인지 2속의 속도비(D2)이다.Therefore, when the position of the input of the first node N1 and the fourth node N4 are connected, the second speed line l2 becomes. At this time, the size of the vertical direction in the third node N3, which is an output element, is larger than the speed ratio D1 of one speed, but is also a speed ratio D2 of the second speed D range.

왜냐하면 제2레버(L2)의 제3노드(N3)는 제1레버(L1)의 제3노드(N3)보다 도면에서 보듯이 제4노드(N4)에서 더 멀기 때문에 1속 속도비(D1)보다 2속 속도비(D2)가 더 증가됨을 알 수 있다.Because the third node N3 of the second lever L2 is farther from the fourth node N4 as shown in the drawing than the third node N3 of the first lever L1, the first speed ratio D1. It can be seen that the second speed ratio D2 is further increased.

(D레인지 3속)(D-range 3 speed)

상기와 같은 D레인지 2속에서 차량의 운행 상태가 3속 조건이면 트랜스밋션 제어유닛(TCU)은 제4클러치(C4)가 작동되는 상태에서 제1클러치(C1)를 해방시키고 제2클러치(C2)를 작동시켜 D레인지 3속을 실현시킨다.If the driving condition of the vehicle in the third range D speed is as described above, the transmission control unit TCU releases the first clutch C1 while the fourth clutch C4 is operated and the second clutch C2. ) To achieve D range 3 speed.

D레인지 3속에서는 제2클러치(C2)가 작동되므로 제2노드(N2)가 입력 요소, 제4노드(N4)가 반력요소로 된다.Since the second clutch C2 is operated at the D range 3 speed, the second node N2 is an input element and the fourth node N4 is a reaction element.

따라서 제2노드(N2)의 입력에 대한 위치와 제4노드(N4)를 연결하면, 3속 선도(l3)가 된다. 이 때 출력 요소인 제3노드(N3)에서 수직 방향의 크기는 2속의 속도비(D2)보다는 크지만 역시 감속된 D레인지 3속의 속도비(D3)이다.Therefore, when the position of the input of the second node N2 and the fourth node N4 are connected, the third speed line l3 is obtained. At this time, the size of the vertical direction in the third node N3, which is an output element, is larger than the speed ratio D2 of the second speed, but is also a speed ratio D3 of the third speed D range.

(D레인지 4속)(D-range 4 speed)

상기와 같은 D레인지 3속에서 차량의 운행 상태가 4속 조건이면 트랜스밋션 제어유닛(TCU)은 제2클러치(C2)가 작동되는 상태에서 제4클러치(C4)를 해방시키고 제1클러치(C1)를 작동시켜 D레인지 4속을 실현시킨다.If the driving condition of the vehicle is the fourth speed condition in the D range 3 speed as described above, the transmission control unit TCU releases the fourth clutch C4 while the second clutch C2 is operated and the first clutch C1. ) To achieve D range 4 speed.

D레인지 4속에서는 제1,2클러치(C1,C2)가 작동되므로 제1유성기어(PG1) 전체가 록킹되어 입력 요소와 출력 요소로 된다. 즉, 제1,2노드(N1,N2)가 입력 요소라고 볼 수도 있다.Since the first and second clutches C1 and C2 are operated in the D range 4 speed, the entire first planetary gear PG1 is locked to become an input element and an output element. That is, the first and second nodes N1 and N2 may be regarded as input elements.

따라서 제1노드(N1)의 입력에 대한 위치와 제2노드(N2)의 입력에 대한 위치를 연결하면, 4속 선도(l4)가 된다. 이 때 출력 요소인 제3노드(N3)에서 수직 방향의 크기는 3속의 속도비(D3)보다 큼과 동시에 입출력 속도비가 동일한 D레인지 4속의 속도비(D4)이다.Therefore, if the position for the input of the first node N1 and the position for the input of the second node N2 are connected, the fourth speed line l4 becomes. At this time, the size of the vertical direction in the third node N3, which is an output element, is greater than the speed ratio D3 at the third speed and the speed ratio D4 at the fourth speed in the D range with the same input / output speed ratio.

한편, D레인지 5속 상태에서는 제1브레이크(B1)가 작동되므로 제1,2유성기어(PG1,PG2)는 레버 해석에 따라, 도 5에 도시된 바와 같은 제3레버(L3)를 형성하게 된다.On the other hand, since the first brake B1 is operated in the D-speed 5 speed state, the first and second planetary gears PG1 and PG2 form the third lever L3 as shown in FIG. 5 according to the lever analysis. do.

이 제3레버(L3)는 제1,2유성기어(PG1,PG2)의 각 요소를 의미하는 제1,2,3노드(N1,N2,N3)로 표시된다. 이들 각 노드가 의미하는 유성기어와의 관계는 도 5의 도시로 대치한다.The third lever L3 is represented by first, second and third nodes N1, N2 and N3 which represent respective elements of the first and second planetary gears PG1 and PG2. The relationship with the planetary gear which each of these nodes means is replaced by the illustration of FIG.

(D레인지 5속)(D-range 5 speed)

상기와 같은 D레인지 4속에서 차량의 운행 상태가 5속 조건이면 트랜스밋션 제어유닛(TCU)은 제2클러치(C2)가 작동되는 상태에서 제1클러치(C1)를 해방시키고 제1브레이크(B1)를 작동시켜 D레인지 5속을 실현시킨다.If the driving condition of the vehicle at the speed D range 4 is 5 speed, the transmission control unit TCU releases the first clutch C1 while the second clutch C2 is operated and the first brake B1. ) To achieve D range 5 speeds.

D레인지 5속에서는 제1브레이크(B1)가 작동되므로 제2노드(N2)가 입력 요소, 제1노드(N1)가 반력요소로 된다.In the D-range 5 speed, the first brake B1 is operated so that the second node N2 is an input element and the first node N1 is a reaction element.

따라서 제2노드(N2)의 입력에 대한 위치와 제1노드(N1)를 연결하면, 5속 선도(l5)가 된다. 이 때 출력 요소인 제3노드(N3)에서 수직 방향의 크기는 4속의 속도비(D4)보다는 큼과 동시에 증속된 D레인지 5속의 속도비(D5)이다.Accordingly, when the position of the input of the second node N2 and the first node N1 are connected, the fifth speed line l5 is obtained. At this time, the size of the vertical direction in the third node N3, which is an output element, is greater than the speed ratio D4 of the fourth speed and is a speed ratio D5 of the D range 5 speed that is increased at the same time.

한편, R레인지 1속 상태에서는 제1클러치(C1)와 제2브레이크(B2)가 작동되므로 제1,2유성기어(PG1,PG2)는 레버 해석에 따라, 도 6에 도시된 바와 같은 제4레버(L4)를 형성하게 된다.On the other hand, in the R range 1 speed state, since the first clutch C1 and the second brake B2 are operated, the first and second planetary gears PG1 and PG2 are the fourth as shown in FIG. 6 according to the lever analysis. The lever L4 is formed.

이 제4레버(L4)는 제1,2유성기어(PG1,PG2)의 각 요소를 의미하는 제1,2,3,4노드(N1,N2,N3,N4)로 표시된다. 이들 각 노드가 의미하는 유성기어와의 관계는 도 6의 도시로 대치한다.The fourth lever L4 is represented by first, second, third, and fourth nodes N1, N2, N3, and N4, which represent respective elements of the first and second planetary gears PG1 and PG2. The relationship with the planetary gear which each of these nodes means is replaced by the illustration of FIG.

(R레인지 1속)(R range 1 speed)

R레인지 1속에서는 상기 제1클러치(C1)와 제2브레이크(B2)가 작동되므로 제1노드(N1)가 입력 요소, 제3노드(N3)가 반력요소로 된다.In R range 1, since the first clutch C1 and the second brake B2 are operated, the first node N1 is an input element, and the third node N3 is a reaction element.

따라서 제1노드(N1)의 입력에 대한 위치와 제3노드(N3)를 연결하면, 후진 1속 선도(lR1)가 된다. 이 때 출력 요소인 제4노드(N4)에서 수직 하향 방향의 크기는 감속된 R레인지 1속의 속도비(R1)이다.Accordingly, when the position of the input of the first node N1 and the third node N3 are connected, the reverse first speed line lR1 is obtained. At this time, the magnitude of the vertical downward direction in the fourth node N4 as the output element is the speed ratio R1 of the decelerated R range 1 speed.

상기에서 제4노드(N4)의 수직 하향 방향은 출력이 입력의 역방향으로 구동됨을 의미한다.The vertical downward direction of the fourth node N4 means that the output is driven in the reverse direction of the input.

상술한 바와 같이 본 발명에 따른 자동변속기용 기어 트레인은 제1,2유성기어(PG1,PG2)와 제1,2,3,4클러치(C1,C2,C3,C4), 제1,2브레이크(B1,B2)로 구성되어 전진 5속과 후진 1속을 실현함을 알 수 있다.As described above, the gear train for the automatic transmission according to the present invention includes the first and second planetary gears PG1 and PG2 and the first, second, third and fourth clutches C1, C2, C3 and C4, and the first and second brakes. It can be seen that it is composed of (B1, B2) to realize 5 forward speeds and 1 reverse speed.

그리고 본 발명의 자동변속기용 기어 트레인은 D레인지에서 제1,2,3,4클러치(C1,C2,C3,C4)와 제1브레이크(B1)인 5개의 마찰요소만을 작동시킴을 알 수 있다.In addition, it can be seen that the gear train of the automatic transmission of the present invention operates only five friction elements of the first, second, third, and fourth clutches C1, C2, C3, and C4 and the first brake B1 in the D range. .

상술한 바와 같이 본 발명에 따른 자동변속기용 기어 트레인은 2개의 유성기어와 6개의 마찰요소로 전진 5속과 후진 1속을 실현함과 동시에 D레인지에서 5개의 마찰요소만 작동케하므로 제어를 단순화시킬 수 있다.As described above, the gear train for the automatic transmission according to the present invention realizes 5 forward speeds and 1 reverse speed with two planetary gears and 6 friction elements, and operates only five friction elements in the D range, thereby simplifying control. You can.

Claims (3)

입력축에 가변 연결되는 선기어, 입력축 및 변속기 하우징에 가변 연결되는 캐리어, 출력축으로 동력을 전달하는 트랜스퍼 드라이브 기어에 고정 연결되는 요소를 갖는 제1유성기어;A first planetary gear having a sun gear variably connected to the input shaft, a carrier variably connected to the input shaft and the transmission housing, and an element fixedly connected to a transfer drive gear transmitting power to the output shaft; 상기 제1유성기어의 한 요소에 고정 연결되는 선기어, 변속기 하우징에 고정 연결되는 캐리어, 변속기 하우징에 가변 연결되고, 제1유성기어의 캐리어 및 링기어에 각각 가변 연결되는 링기어를 갖는 제2유성기어;A second planet having a sun gear fixedly connected to one element of the first planetary gear, a carrier fixedly connected to the transmission housing, a variable gear connected to the transmission housing, and a ring gear variablely connected to the carrier and the ring gear of the first planetary gear, respectively. Gear; 상기와 같이 고정 및 가변 연결되는 제1,2유성기어가 입력축으로 전달되는 입력을 전진 5단과 후진 1단으로 변속시켜 트랜스퍼 드라이브 기어로 전달할 수 있도록, 상기 제1유성기어의 선기어, 캐리어를 각각 입력축에 가변 연결하는 제1,2클러치;The first and second planetary gears, which are fixed and variably connected as described above, transfer the input transmitted to the input shaft to 5 forward and 1 reverse gears and transfer them to the transfer drive gear so that the sun gear and the carrier of the first planetary gear are respectively input shafts. First and second clutches variably connected to the first clutch; 상기 제1유성기어의 캐리어, 링기어를 제2유성기어의 링기어에 각각 가변 연결하는 제3,4클러치;Third and fourth clutches for variably connecting the carrier and the ring gear of the first planetary gear to the ring gear of the second planetary gear, respectively; 상기 제2,1유성기어 각각의 링기어, 캐리어를 변속기 하우징에 가변 연결하는 제1,2브레이크를 포함하는 자동변속기용 기어 트레인.A gear train for an automatic transmission comprising ring rings for each of the second and first planetary gears and first and second brakes for variably connecting the carrier to the transmission housing. 청구항 1에 있어서, 제1유성기어는 싱글 피니언 유성기어로 구성됨을 특징으로 하는 자동변속기용 기어 트레인.The gear train of claim 1, wherein the first planetary gear is configured as a single pinion planetary gear. 청구항 1에 있어서, 제2유성기어는 더블 피니언 유성기어로 구성됨을 특징으로 하는 자동변속기용 기어 트레인.The gear train of claim 1, wherein the second planetary gear is configured as a double pinion planetary gear.
KR1019970073322A 1997-12-24 1997-12-24 Gear train for automatic transmission KR100302745B1 (en)

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KR100302745B1 true KR100302745B1 (en) 2001-12-28

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