KR20070121247A - A 8 speed power train of an automatic transmission - Google Patents

A 8 speed power train of an automatic transmission Download PDF

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KR20070121247A
KR20070121247A KR1020060056058A KR20060056058A KR20070121247A KR 20070121247 A KR20070121247 A KR 20070121247A KR 1020060056058 A KR1020060056058 A KR 1020060056058A KR 20060056058 A KR20060056058 A KR 20060056058A KR 20070121247 A KR20070121247 A KR 20070121247A
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South Korea
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planetary
gear
carrier
clutch
speed
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KR1020060056058A
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Korean (ko)
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KR100828594B1 (en
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김우열
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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
    • F16H3/62—Gearings having three or more central gears
    • 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
    • F16H2200/006—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising eight 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
    • F16H2200/2002—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears
    • F16H2200/2012—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with four sets of orbital gears

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

Abstract

An 8 speed power train of an automatic transmission is provided to prevent car accidents in advance by minimizing the vibration generated in the automatic transmission. A first double-pinion planetary gear set(SPG1) is comprised of a first sun gear(S1) connected to a case(1), a first planetary double carrier connected to an input shaft(3), and a first ring gear(R1) gear-coupled to the first planetary double carrier. A second single-pinion planetary gear set(SPG2) is comprised of a second ring gear(R2), a second planetary carrier gear-coupled to the second ring gear, and a second sun gear(S2) gear-coupled to the second planetary carrier. The second ring gear is connected to the first planetary double carrier by intermediating a fourth clutch(C4). A third single-pinion planetary gear set(SPG3) is comprised of a third ring gear(R3), a third planetary carrier, and a third sun gear(S3). The third ring gear is directly connected to the second planetary carrier and connected to the case by intermediating a first brake(B1). The third planetary carrier is directly connected to the second sun gear and connected to the case by intermediating a second brake(B2). The third sun gear is connected to the input shaft by intermediating a first clutch(C1) and connected to the first planetary double carrier by intermediating a second clutch(C2). A fourth single-pinion planetary gear set(SPG4) is comprised of a fourth sun gear(S4) directly connected to the third sun gear. The fourth planetary carrier is directly connected to the third planetary carrier and connected to the input shaft by intermediating a third clutch(C3). The fourth ring gear is gear-coupled to the fourth planetary carrier and connected to an output shaft(2).

Description

자동변속기의 8속 파워트레인{A 8 SPEED POWER TRAIN OF AN AUTOMATIC TRANSMISSION} 8 speed powertrain of automatic transmission {A 8 SPEED POWER TRAIN OF AN AUTOMATIC TRANSMISSION}

도1은 종래 6속 파워트레인을 나타낸 개략도.1 is a schematic diagram showing a conventional six-speed powertrain.

도2는 종래 6속 파워트레인의 작동요소표.Figure 2 is a table of the operation element of the conventional six-speed powertrain.

도3은 본 발명에 따른 8속 파워트레인을 나타낸 개략도.3 is a schematic diagram showing an eight-speed powertrain according to the present invention;

도4는 본 발명에 따른 8속 파워트레인의 작동요소표.Figure 4 is a table of the operating elements of the eight-speed powertrain according to the present invention.

도5는 본 발명에 따른 8속 파워트레인의 작동요소와 속도의 관계그래프.Figure 5 is a graph of the relationship between the operating element and the speed of the eight-speed powertrain according to the present invention.

※도면의 주요부분에 대한 부호의 설명※※ Explanation of symbols about main part of drawing ※

1 : 케이스 2 : 출력축1 case 2 output shaft

3 : 입력축 B1 : 제1브레이크3: input shaft B1: first brake

B2 : 제2브레이크 C1 : 제1클러치B2: 2nd brake C1: 1st clutch

C2 : 제2클러치 C3 : 제3클러치C2: Second Clutch C3: Third Clutch

C4 : 제4클러치 PC1 : 제1유성 더블 케리어C4: fourth clutch PC1: first planetary double carrier

PC2 : 제2유성 케리어 PC3 : 제3유성 케리어PC2: 2nd planetary carrier PC3: 3rd planetary carrier

PC4 : 제4유성 케리어 R1 : 제1링기어PC4: 4th planet carrier R1: 1st ring gear

R2 : 제2링기어 R3 : 제3링기어R2: 2nd Ring Gear R3: 3rd Ring Gear

R4 : 제4링기어 S1 : 제1선기어R4: 4th ring gear S1: 1st sun gear

S2 : 제2선기어 S3 : 제3선기어S2: Second Sun Gear S3: Third Sun Gear

S4 : 제4선기어S4: 4th Sun Gear

SPG1 : 제1더블 피니언 유성기어셋트SPG1: First Double Pinion Planetary Gear Set

SPG2 : 제2싱글 피니언 유성기어셋트SPG2: Second Single Pinion Planetary Gear Set

SPG3 : 제3싱글 피니언 유성기어셋트SPG3: 3rd Single Pinion Planetary Gear Set

SPG4 : 제4싱글 피니언 유성기어셋트SPG4: Fourth Single Pinion Planetary Gear Set

본 발명은 자동변속기의 8속 파워트레인에 관한 것으로서, 더욱 상세하게는 전진 8속 및 후진 1속의 변속단을 구현할 수 있도록 한 차량용 자동 변속기의 8속 파워 트레인에 관한 것이다.The present invention relates to an eight-speed power train of an automatic transmission, and more particularly, to an eight-speed power train of an automatic transmission for a vehicle capable of implementing a shift stage of eight forward speeds and one reverse speed.

일반적으로 차량에는 그 차량의 주행속도를 자동으로 제어할 수 있는 자동변속기가 설치되어 있으며, 상기 자동 변속기의 다단 변속 메카니즘은, 복수의 유성기어셋트의 조합으로 이루어져 있다.In general, a vehicle is provided with an automatic transmission capable of automatically controlling the traveling speed of the vehicle, and the multi-speed transmission mechanism of the automatic transmission consists of a combination of a plurality of planetary gear sets.

상기한 복수의 유성기어셋트가 조합된 파워 트레인은 엔진 토크를 변환하여 전달하는 토크 컨버터로부터 회전 동력이 입력되면 이를 다단으로 변속하여 출력측으로 전달하는 기능을 수행하게 된다.When a plurality of planetary gear sets are combined, the power train performs a function of shifting the multi-stage transmission to the output side when rotation power is input from a torque converter that converts and transmits engine torque.

이러한 자동 변속기의 파워 트레인은 많은 변속단을 보유할수록 동력 성능 및 연료 소비율면에서 유리하기 때문에 보다 많은 변속단을 구현할 수 있는 파워 트레인이 요구되고 있다.Since the power train of the automatic transmission has more shift stages, it is advantageous in terms of power performance and fuel consumption rate, and thus, a power train capable of implementing more shift stages is required.

그리고 동일 수의 변속단을 구현하더라도 유성기어셋트의 조합 방법에 따라 내구성 및 동력 전달 효율, 그리고 크기 및 중량 등이 크게 달라지기 때문에, 보다 견고하고 동력 손실을 최소화하면서도 컴팩트화 할 수 있는 파워 트레인의 개발을 위한 노력이 계속되고 있다.Also, even if the same number of gear stages are implemented, durability, power transmission efficiency, size and weight vary greatly depending on the combination method of the planetary gear set. Therefore, the power train can be more robust and compact while minimizing power loss. Efforts for development are ongoing.

유성기어셋트를 이용하는 파워 트레인을 개발함에 있어서는 어떤 새로운 유성기어셋트를 개발하는 것이 아니라, 기존에나와 있는 싱글 피니온 유성기어셋트, 더블 피니온 유성기어셋트 혹은 싱글 및 더블 피니온 유성기어셋트를 조합한 라비뉴 타입의 유성기어셋트를 어떻게 조합하고, 이에 수반되는 클러치와 브레이크, 그리고 원웨이 클러치를 어느 위치에 몇 개를 배치하여 가능한 동력 손실이 없이 원하는 변속단과 이에 따르는 변속비를 구현하여 변속기 성능을 향상시키는 데에 그 목표를 두고 다양한 연구되고 있다.In developing a power train using planetary gear sets, rather than developing any new planetary gear sets, a combination of existing single pinion planetary gear sets, double pinion planetary gear sets, or single and double pinion planetary gear sets The combination of a planet type planetary gear set and the accompanying clutches, brakes, and one-way clutches can be arranged at any position to achieve the desired speed and the gear ratio without any power loss. Various studies are aimed at improving the target.

특히, 수동 변속기의 경우에는 변속단이 지나치게 많으면 운전자가 자주 변속을 해주어야 하는 불편함이 있으나, 자동 변속기의 경우에 있어서는 운전 상태에 따라 트랜스밋션 제어유닛이 자동으로 파워 트레인의 작동을 제어하여 변속을 수행하는 것으로서, 보다 많은 변속단을 구현할 수 있는 파워 트레인을 개발하는 것은 매우 중요한 가치가 있다고 할 수 있다.In particular, in the case of a manual transmission, if there are too many shift stages, the driver should shift frequently. However, in the case of an automatic transmission, the transmission control unit automatically controls the operation of the power train in accordance with the driving state to change the shift. As a practice, developing a power train that can implement more shifts is of great value.

이러한 추세에 부응하기 위하여 4속 및 5속 파워 트레인에 관한 다양한 연구가 진행되고 있음과 아울러, 최근에는 전진 6속 및 후진 1속의 변속단을 구현할 수 있는 자동 변속기의 파워 트레인이 개발되어 있다.In order to cope with this trend, various studies on the 4th and 5th speed power trains are being conducted, and recently, the power train of the automatic transmission that can realize the 6th forward and 1st speed shift stages has been developed.

그 일례로서 도1에 나타낸 바와 같이 전방에서부터 후방으로 3개의 싱글 피니언 유성기어셋트(SPG1,SPG2,SPG3)를 조합하되, 제1싱글 피니언 유성기어셋트(SPG1)의 제1선기어(S1)는 변속기 케이스(1)에 제1브레이크(B1)를 통하여 가변적으로 고정되고, 제1유성 캐리어(PC1)는 제3싱글 피니언 유성기어셋트(SPG3)의 제3링기어(R3)와 고정적으로 연결된 상태로 출력기어(OUT)가 장착되어 출력요소로 작동하게 된다.As an example, as shown in FIG. 1, three single-pinion planetary gear sets SPG1, SPG2, and SPG3 are combined from the front to the rear, and the first sun gear S1 of the first single-pinion planetary gear set SPG1 is a transmission. The first planetary carrier PC1 is variably fixed to the case 1 through the first brake B1, and the first planetary carrier PC1 is fixedly connected to the third ring gear R3 of the third single-pinion planetary gear set SPG3. The output gear (OUT) is mounted to act as an output element.

또한, 제1싱글 피니언 유성기어셋트(SPG1)의 제1링기어(R1)는 제2싱글 피니언 유성기어셋트(SPG2)의 제2유성 캐리어(PC2)와 직결된다.In addition, the first ring gear R1 of the first single pinion planetary gear set SPG1 is directly connected to the second planet carrier PC2 of the second single pinion planetary gear set SPG2.

상기 제2싱글 피니언 유성기어셋트(SPG2)의 제2선기어(S2)는 입력축(3)과 직접 연결되며, 그 제2링기어(R2)는 제3싱글피니언 유성기어셋트(SPG3)의 제3유성 캐리어(PC3)와 직결된다.The second sun gear S2 of the second single pinion planetary gear set SPG2 is directly connected to the input shaft 3, and the second ring gear R2 is the third of the third single pinion planetary gear set SPG3. It is directly connected to the planet carrier PC3.

여기서, 상기 제2링기어(R2)와 제3유성 캐리어(PC3)는 제2클러치(C2)를 통하여 입력축(3)에 가변적으로 연결되며, 동시에 제2브레이크(B2)를 통하여 변속기 케이스(1)에 가변적으로 고정된다.Here, the second ring gear R2 and the third planet carrier PC3 are variably connected to the input shaft 3 through the second clutch C2, and at the same time, the transmission case 1 through the second brake B2. Is fixed variably).

그리고 상기 제3싱글 피니언 유성기어셋트(SPG3)의 제3선기어(S3)는 제1클러치(C1)를 통하여 상기 입력축(3)과 가변적으로 연결되며, 동시에 제3브레이크(B3)를 통하여 변속기 케이스(1)에 가변적으로 고정된다.In addition, the third sun gear S3 of the third single pinion planetary gear set SPG3 is variably connected to the input shaft 3 through the first clutch C1, and at the same time, the transmission case is connected through the third brake B3. It is fixedly fixed to (1).

이러한 파워 트레인은 도2에서와 같이, 전진 1속에서는 제1브레이크(B1)와 제2브레이크(B2)가 작동하고, 전진 2속에서는 제1브레이크(B1)와 제3브레이크(B3)가 작동하며, 전진 3속에서는 제1브레이크(B1)와 제1클러치(C1)가 작동하고, 전진 4속에서는 제1브레이크(B1)와 제2클러치(C2)가 작동하며, 전진 5속에서는 제1,2클러치(C1)(C2)가 작동하고, 전진 6속에서는 제2클러치(C2)와 제3브레이크(B3)가 작동하며, 후진 1속에서는 제1클러치(C1)와 제2브레이크(B2)가 작동하면서 전진 6속과 후진 1속의 변속단을 구현하게 된다.In this power train, as shown in FIG. 2, the first brake B1 and the second brake B2 operate at the first forward speed, and the first brake B1 and the third brake B3 operate at the second forward speed. The first brake B1 and the first clutch C1 operate at the third forward speed, and the first brake B1 and the second clutch C2 operate at the fourth forward speed, and the first and second clutch C1 at the fifth forward speed. (C2) is operated, the second clutch (C2) and the third brake (B3) is operated at the forward sixth speed, and the first clutch (C1) and the second brake (B2) are operated at the first forward speed The shift stage of the 1st speed and the reverse speed will be implemented.

그런데 상기와 같은 파워 트레인에 있어서는, 제1,2,3링기어(R1,R2,R3)가 제2,3,1유성 캐리어(PC2,PC3,PC1)에 각각 연결되는 구조로 각각의 유성 캐리어가 분리되어 자동변속기의 전장이 길어지게 되는 단점이 있으며, 이로 인해 변속기 중량이 많이 나가는 문제점도 내포하고 있다.In the power train as described above, the first, second, and third ring gears R1, R2, and R3 are connected to the second, third, and first planet carriers PC2, PC3, and PC1, respectively. There is a disadvantage in that the total length of the automatic transmission is separated, which causes a problem that a lot of the transmission weight.

또한, 출력기어(2)가 제1유성 캐리어(PC1)와 연결되어 그 작용 토크를 크게 하며, 이에 따른 유성 캐리어의 내구성을 저하시키는 요인이 되는 문제점도 내포하고 있다.In addition, the output gear 2 is connected to the first planetary carrier PC1 to increase its working torque, thereby causing a problem of reducing the durability of the planetary carrier.

그리고, 이러한 종래의 장치는 변속단이 6속으로 제한되어 있으므로, 동력 성능 및 연료 소비율을 향상시키는데 한계가 있다.In addition, since the shift stage is limited to six speeds in the related art, there is a limit to improving power performance and fuel consumption rate.

본 발명은 상기한 문제점을 해결하기 위하여 발명한 것으로서, 그 목적은 4개의 싱글 피니언 유성기어셋트를 순차적으로 설치하여 전진 8속 및 후진 1속의 변속단을 구현할 수 있도록 하여 차량 주행중 변속감을 향상시키고 변속시간을 단축시킴은 물론, 차량의 속도가 급격히 감소되는 스킵 시프트(skip shift) 발생시 충격력을 최소화 할 수 있는 자동변속기의 8속 파워트레인을 제공함에 있다.The present invention has been invented to solve the above problems, the object of which is to install four single-pinion planetary gear set in sequence to implement a shift stage of 8 forward speed and 1 reverse speed to improve the shifting feeling while driving the vehicle In addition to shortening the time, it is to provide an eight-speed power train of the automatic transmission that can minimize the impact force when the skip shift (skip shift) occurs when the speed of the vehicle is sharply reduced.

상기 목적을 달성하기 위한 본 발명의 특징적인 구성을 설명하면 다음과 같다.Referring to the characteristic configuration of the present invention for achieving the above object is as follows.

본 발명의 자동변속기의 8속 파워트레인은 케이스에 연결된 제1선기어와, 입력축에 연결된 제1유성 더블케리어와, 상기 제1유성 더블케리어에 기어 결합된 제1링기어로 이루어진 제1더블 피니언 유성기어셋트; 상기 제1유성 더블케리어에 제4클러치를 매개로 연결된 제2링기어와, 상기 제2링기어에 기어 결합된 제2유성 케리어와, 상기 제2유성 케리어에 기어 결합된 제2선기어로 이루어진 제2싱글 피니언 유성기어셋트; 상기 제2유성 케리어에 직결 연결되고 제1브레이크를 매개로 케이스에 연결된 제3링기어와 상기 제2선기어에 직결 연결됨과 동시에 제2브레이크를 매개로 케이스에 연결된 제3유성 케리어와, 상기 입력축에 제1클러치를 매개로 연결됨과 동시에 제2클러치를 매개로 제1유성 더블 케리어에 연결된 제3선기어로 이루어진 제3싱글 피니언 유성기어셋트; 및 상기 제3선기어에 직결 연결된 제4선기어와, 상기 제3유성 케리어에 직결 연결됨과 동시에 제3클러치를 매개로 입력축에 연결된 제4유성 케리어와, 상기 제4유성 케리어에 기어 결합됨과 동시에, 출력축에 연결된 제4링기어로 이루어진 제4싱글 피니언 유성기어셋트를 포함하여서 된 것이다.The eight-speed powertrain of the automatic transmission according to the present invention includes a first sun gear connected to a case, a first planetary double carrier connected to an input shaft, and a first double pinion planetary gear coupled to the first planetary double carrier. Gear set; A second ring gear connected to the first planetary double carrier via a fourth clutch, a second planetary gear geared to the second ring gear, and a second sun gear geared to the second planetary carrier. 2 single pinion planetary gear set; A third ring gear connected directly to the second planetary carrier and directly connected to the second ring gear connected to the case via a first brake, and a third planet carrier connected to the case via a second brake; A third single pinion planetary gear set including a third sun gear connected to the first clutch and connected to the first planetary double carrier via the second clutch; And a fourth sun gear directly connected to the third sun gear, a fourth planet carrier directly connected to the third planetary carrier and connected to an input shaft via a third clutch, and gear-coupled to the fourth planet carrier, and simultaneously output shaft It includes the fourth single pinion planetary gear set consisting of a fourth ring gear connected to.

이와 같은 특징을 갖는 본 발명을 상세하게 설명하면 다음과 같다.Referring to the present invention having such characteristics in detail as follows.

도3은 본 발명에 따른 8속 파워트레인을 나타낸 개략도이고, 도4는 본 발명에 따른 8속 파워트레인의 작동요소표이며, 도5는 본 발명에 따른 8속 파워트레인 의 작동요소와 속도의 관계그래프이다.Figure 3 is a schematic diagram showing an eight speed power train according to the present invention, Figure 4 is an operating element table of the eight speed power train according to the present invention, Figure 5 is a diagram of the operating elements and speed of the eight speed power train according to the present invention. Relationship graph.

여기에서 참조되는 바와 같이 본 발명은 제1더블 피니언 유성기어셋트(SPG1)와, 제2싱글 피니언 유성기어셋트(SPG2) 내지 제4싱글 피니언 유성기어셋트(SPG4)가 순차적으로 설치되어 있다.As referred to herein, the first double pinion planetary gear set SPG1 and the second single pinion planetary gear set SPG2 to the fourth single pinion planetary gear set SPG4 are sequentially installed.

상기 제1더블 피니언 유성기어셋트(SPG1)에는 제1선기어(S1)가 마련되어 있되, 그 제1선기어(S1)는 케이스(1)에 연결되어 있고, 상기 제1선기어(S1)에는 제1유성 더블케리어(PC1)가 기어 결합되어 있으며, 상기 제1유성 더블케리어(PC1)에는 제1링기어(R1)가 기어 결합되어 있다.The first double pinion planetary gear set SPG1 is provided with a first sun gear S1, the first sun gear S1 is connected to the case 1, and the first sun gear S1 has a first planetary gear. The double carrier PC1 is gear-coupled, and the first ring gear R1 is gear-coupled to the first planetary double carrier PC1.

한편, 상기 제2싱글 피니언 유성기어셋트(SPG2)에는 제2링기어(S2)가 마련되어 있되, 그 제2링기어(S2)는 제4클러치(C4)를 매개로 상기 제1유성 더블케리어(PC1)에 연결되어 있고, 상기 제2링기어(R2)에는 제2유성 케리어(PC2)가 기어 결합 되어 있으며, 상기 제2유성 케리어(PC2)에는 제2선기어(S2)가 기어 결합되어 있다.On the other hand, the second single pinion planetary gear set (SPG2) is provided with a second ring gear (S2), the second ring gear (S2) via the fourth clutch (C4) the first planetary double carrier ( PC1), a second planetary carrier PC2 is gear-coupled to the second ring gear R2, and a second sun gear S2 is gear-coupled to the second planetary carrier PC2.

또한, 상기 제3싱글 피니언 유성기어셋트(SPG3)에는 제3링기어(R3)가 마련되어 있되, 그 제3링기어(R3)는 상기 제2유성 케리어(PC2)에 직결 연결됨과 동시에 제1브레이크(B1)를 매개로 케이스(1)에 연결되어 있고, 상기 제3링기어(R3)에 기어 결합된 제3유성 케리어(PC3)는 제2선기어(S2)에 직결 연결되어 있으며, 상기 제3유성 케리어(PC3)에 기어 결합된 제3선기어(S3)는 제1클러치(C1)를 매개로 입력축(3)에 연결됨과 동시에 제2클러치(C2)를 매개로 제1유성 더블피니언(PC1)에 연결되어 있다.In addition, a third ring gear (R3) is provided in the third single pinion planetary gear set (SPG3), the third ring gear (R3) is directly connected to the second planet carrier (PC2) and at the same time the first brake The third planetary carrier PC3, which is connected to the case 1 via B1 and gear-coupled to the third ring gear R3, is directly connected to the second sun gear S2. The third sun gear S3 geared to the planet carrier PC3 is connected to the input shaft 3 via the first clutch C1 and at the same time the first planetary double pinion PC1 via the second clutch C2. Is connected to.

그리고 상기 제4싱글 피니언 유성기어셋트(SPG4)에는 제4선기어(S4)가 마련되어 있되, 그 제4선기어(S4)는 제3선기어(S3)에 직결 연결되어 있고, 상기 제4선기어(S4)에 기어 결합된 제4유성 케리어(PC4)는 제3유성 케리어(PC3)에 직결 연결됨과 동시에 제3클러치(C3)를 매개로 입력축(3)에 연결되어 있으며, 상기 제4유성 케리어(PC4)에 기어 결합된 제4링기어(4)는 출력축(2)에 직결 연결되어 있다.The fourth single-pinion planetary gear set SPG4 is provided with a fourth sun gear S4, and the fourth sun gear S4 is directly connected to the third sun gear S3, and the fourth sun gear S4. The fourth planetary carrier PC4 gear-coupled to the third planetary carrier PC4 is directly connected to the third planetary carrier PC3 and connected to the input shaft 3 via the third clutch C3, and the fourth planetary carrier PC4 is connected. The fourth ring gear 4 which is gear-coupled to is connected directly to the output shaft 2.

이와 같이 구성된 본 발명을 상세히 설명하면 다음과 같다.Referring to the present invention configured as described in detail as follows.

입력축(3)을 통하여 입력되는 동력의 회전력은 도4 및 도5에 나타낸 바와 같이 제1클러치(C1), 제2클러치(C2), 제3클러치(C3), 제4클러치(C4), 제1브레이크(B1) 및 제2브레이크(B2)로 이루어진 작동요소중 어느 2개의 동작에 의해서 전진 8속 및 후진 1속의 속도로 변속된 후 출력축(2)을 통하여 출력되는 것이다.As shown in FIGS. 4 and 5, the rotational force of the power input through the input shaft 3 may include the first clutch C1, the second clutch C2, the third clutch C3, the fourth clutch C4, and the first clutch. It is output through the output shaft 2 after shifting to the speed of 8 forward speeds and 1 reverse speed by any two operations of an operating element consisting of the first brake B1 and the second brake B2.

먼저, 후진 1속으로 출력될 경우에는 제1클러치(C1) 및 제2브레이크(B2)가 작동되는 것이고, 전진 1속으로 출력될 경우에는 제1클러치(C1) 및 제1브레이크(B1)가 작동되는 것이며, 전진 2속으로 출력될 경우에는 제2클러치(C2) 및 제1브레이크(B1)가 작동되는 것이다.First, the first clutch C1 and the second brake B2 are operated when the output is performed at the reverse 1 speed, and the first clutch C1 and the first brake B1 are operated when the first clutch C1 and the second brake B2 are operated at the forward 1 speed. The second clutch C2 and the first brake B1 are operated when output at the second forward speed.

한편, 전진 3속으로 출력될 경우에는 제3클러치(C3) 및 제1브레이크(B1)가 작동되는 것이고, 전진 4속으로 출력될 경우에는 제2클러치(C2) 및 제3클러치(C3)가 작동되는 것이며, 전진 5속으로 출력될 경우에는 제1클러치(C1) 및 제3클러치(C3)가 작동되는 것이다.On the other hand, when output at the 3rd forward speed, the third clutch C3 and the first brake B1 are operated. When output at the 4th forward speed, the second clutch C2 and the third clutch C3 are operated. The first clutch C1 and the third clutch C3 are operated when output at the fifth forward speed.

그리고, 전진 6속으로 출력될 경우에는 제3클러치(C3) 및 제4클러치(C4)가 작동되는 것이고, 전진 7속으로 출력될 경우에는 제1클러치(C1) 및 제4클러치(C4) 가 작동되는 것이며, 전진 8속으로 출력될 경우에는 제2클러치(C2) 및 제4클러치(C4)가 작동되는 것이다.When the sixth forward speed is outputted, the third clutch C3 and the fourth clutch C4 are operated. When the seventh forward speed is outputted, the first clutch C1 and the fourth clutch C4 are operated. The second clutch C2 and the fourth clutch C4 are operated when output at the eighth forward speed.

상술한 바와 같이 후진 1속 상태에서 전진 1속으로 변속될 경우 또는 전진 1속 내지 전진 8속으로 변속될 때 각 변속구간에서 2개의 작동요소 중 어느 하나는 동작상태를 유지하고 다른 하나의 변경으로 변속구간이 변경되므로 변속시간을 단축시킬 수 있게됨은 물론, 운전자에게 전달되는 변속감을 향상시킬 수 있게되는 것이다.As described above, when shifting from forward 1 speed to forward 1 speed or when shifting from forward 1 to 8 forward speeds, one of the two operating elements in each shifting section remains in operation and changes to the other. Since the shift section is changed, the shift time can be shortened, and the shift feeling delivered to the driver can be improved.

또한, 차량 주행중 급 감속으로 인하여 변속구간이 2구간 변경되는 스킵 시프트 작동시 2개의 작동요소 중 어느 하나는 동작상태를 유지하고 다른 하나의 변경으로 변속구간이 변경되므로 급감속으로 인한 진동이 방지되는 것이다.In addition, during the skip shift operation in which the shift section is changed to two sections due to rapid deceleration while driving the vehicle, any one of the two operating elements maintains the operating state and the shift section is changed by the other change, thereby preventing vibration due to rapid deceleration. will be.

이와 같이 본 발명은 후진 1속 내지 전진 8속으로 변속될 때 2개의 작동요소중 어느 하나의 변경으로 변속되므로 변속시간을 단축시키고, 변속감을 향상시키게 되므로 쾌적한 운전환경을 제공할 수 있는 특유의 효과가 있다.As described above, the present invention reduces the shift time and improves the feeling of shifting when the shifting speed is changed to any one of the two operating elements when shifting from the 1st speed to the 8th speed forward, thereby providing a unique driving environment. There is.

또한 본 발명은 차량 주행중 급 감속으로 인하여 스킵 시프트 작동시 2개의 작동요소 중 어느 하나는 동작상태를 유지하게 되므로 자동변속기에서 발생되는 진동을 최소화 하여 안전사고를 미연에 방지할 수 있는 특유의 효과가 있다.In addition, the present invention is to maintain the operating state of any one of the two operating elements during the skip shift operation due to rapid deceleration during the vehicle driving has a unique effect of minimizing the vibration generated in the automatic transmission to prevent safety accidents in advance have.

Claims (2)

케이스(1)에 연결된 제1선기어(S1)와, 입력축(3)에 연결된 제1유성 더블케리어(PC1)와, 상기 제1유성 더블케리어(PC1)에 기어 결합된 제1링기어(R1)로 이루어진 제1더블 피니언 유성기어셋트(SPG1);The first sun gear S1 connected to the case 1, the first planetary double carrier PC1 connected to the input shaft 3, and the first ring gear R1 geared to the first planetary double carrier PC1. The first double pinion planetary gear set (SPG1) consisting of; 상기 제1유성 더블케리어(PC1)에 제4클러치(C4)를 매개로 연결된 제2링기어(R2)와, 상기 제2링기어(R2)에 기어 결합된 제2유성 케리어(PC2)와, 상기 제2유성 케리어(PC2)에 기어 결합된 제2선기어(S2)로 이루어진 제2싱글 피니언 유성기어셋트(SPG2);A second ring gear R2 connected to the first planetary double carrier PC1 via a fourth clutch C4 and a second planet carrier PC2 geared to the second ring gear R2; A second single pinion planetary gear set (SPG2) consisting of a second sun gear (S2) geared to the second planetary carrier (PC2); 상기 제2유성 케리어(PC2)에 직결 연결되고 제1브레이크(B1)를 매개로 케이스(1)에 연결된 제3링기어(R3)와 상기 제2선기어(S2)에 직결 연결됨과 동시에 제2브레이크(B2)를 매개로 케이스(1)에 연결된 제3유성 케리어(PC3)와, 상기 입력축(3)에 제1클러치(C1)를 매개로 연결됨과 동시에 제2클러치(C2)를 매개로 제1유성 더블 케리어(PC1)에 연결된 제3선기어(S3)로 이루어진 제3싱글 피니언 유성기어셋트(SPG3); 및 The second brake is connected directly to the second planetary carrier PC2 and directly connected to the third ring gear R3 and the second sun gear S2 connected to the case 1 via the first brake B1. A third planetary carrier PC3 connected to the case 1 via (B2) and a first clutch C1 to the input shaft 3, and a first clutch C2 through the second clutch C2. A third single pinion planetary gear set SPG3 including a third sun gear S3 connected to the planetary double carrier PC1; And 상기 제3선기어(S3)에 직결 연결된 제4선기어(S4)와, 상기 제3유성 케리어(PC3)에 직결 연결됨과 동시에 제3클러치(C3)를 매개로 입력축(3)에 연결된 제4유성 케리어(PC4)와, 상기 제4유성 케리어(PC4)에 기어 결합됨과 동시에 출력축(2)에 연결된 제4링기어(R4)로 이루어진 제4싱글 피니언 유성기어셋트(SPG4)를 포함함을 특징으로 하는 자동변속기의 8속 파워트레인.The fourth planetary gear S4 directly connected to the third sun gear S3 and the fourth planetary carrier directly connected to the third planetary carrier PC3 and connected to the input shaft 3 via the third clutch C3 at the same time. And a fourth single pinion planetary gear set (SPG4) formed of a fourth ring gear (R4) coupled to the output shaft (2) and gear-coupled to the fourth planetary carrier (PC4). 8-speed powertrain with automatic transmission. 제1항에 있어서, 상기 제1더블 피니언 유성기어셋트(SPG1)와, 제2싱글 피니언 유성기어셋트(SPG2) 내지 제4싱글 피니언 유성기어셋트(SPG4)는 순차적으로 설치됨을 특징으로 하는 자동변속기의 8속 파워트레인.The automatic transmission of claim 1, wherein the first double pinion planetary gear set SPG1 and the second single pinion planetary gear set SPG2 to the fourth single pinion planetary gear set SPG4 are sequentially installed. 8-speed powertrain.
KR1020060056058A 2006-06-21 2006-06-21 A 8 speed power train of an automatic transmission KR100828594B1 (en)

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KR100907069B1 (en) * 2008-03-31 2009-07-09 현대자동차주식회사 Gear train of automatic transmission for vehicles

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KR100907071B1 (en) * 2008-04-01 2009-07-09 현대자동차주식회사 Gear train of automatic transmission for vehicles

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