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Speed variator

A technology of transmission and clutch, applied in the direction of vehicle gearbox, gear transmission, transmission element, etc., can solve the problems of insufficient compactness, lengthening power transmission route, affecting automobile fuel consumption, etc.

Inactive Publication Date: 2009-07-01
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This arrangement has been introduced in US7125360, US6120410, EP0434525A1 and other patents. Its main disadvantage is that the single-row planetary gear has shifting parts on the front or on the periphery, which makes the structure before the compound planetary gear set complex and not compact enough. At the same time, lengthening the power transmission route will affect the transmission efficiency of the transmission, thereby affecting the fuel consumption of the car
In addition, in the automotive automatic transmissions described in US7125360 and EP0434525A1 patents, no one-way clutch is used, which increases the frequency of use of low-gear shifting components and makes the low-gear shifting response time relatively long, thereby affecting car drivability

Method used

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Embodiment Construction

[0038] Such as figure 1 Shown, in the automobile automatic transmission that the present invention introduces, comprise altogether a power input shaft (IP), a power output shaft (OP), a single-row planetary gear set (SP), a compound planetary gear set (CP) , five multi-plate friction shifting components (three clutches and two brakes), a one-way clutch (OWC), an intermediate support (CS) and the transmission housing (H). The power input shaft (IP) passes through and is coaxial with the single row planetary gear set (SP). The power take-off shaft (OP) is arranged behind and coaxially with the compound planetary gear set (CP).

[0039] Depend on figure 1 It can be seen that in this transmission, the single planetary gear set (SP) is arranged in front of the compound planetary gear set (CP). There is no clutch in the front and periphery of the single row planetary gear set, and all shifting parts are all positioned between the single row planetary gear set and the compound pla...

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Abstract

The invention discloses a gearbox capable of automatically changing the gear ratio to transmit rotary movement for vehicles, comprising a power input shaft, a power output shaft, a single-row planetary gear set, a composite planetary gear set and six gear-shifting component, wherein the single-row planetary gear set is arranged before the composite planetary gear set, the six gear-shifting component are all arranged between the single-row planetary gear set and the composite planetary gear set, and comprises a first clutch activating on the single-row planetary gear set and a one-way clutch activating on the composite planetary gear set. When the gearbox is shifted to first gear, the first clutch and the one-way clutch in the gear-shifting components are activated to transmit the power to the power output shaft from the power input shaft through the single-row planetary gear set and the composite planetary gear set. Therefore, the gearbox reduces the use frequency of the gear-shifting component and the gear-shifting response time at low gear, simultaneously has simple control, compact structure and short power transmission line.

Description

Technical field: [0001] The invention relates to a transmission device, in particular to a transmission used in automobiles which can automatically change the gear ratio and transmit rotary motion. Background technique: [0002] In the field of automatic transmission for automobiles, it is required to have many gears, high transmission efficiency, and compact structure, so that the automobile has the advantages of low fuel consumption and good driving performance. Therefore, the current automotive automatic transmissions all contain planetary gear sets and multi-plate friction shifting components, such as clutches and brakes, to increase the number of gears and improve transmission efficiency. [0003] At present, all kinds of automotive automatic transmissions with six forward gears and one reverse gear on the market have a simple planetary gear set, a compound planetary gear set, three clutches and two brakes. The simple planetary gear set is arranged in a compound In fro...

Claims

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Application Information

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IPC IPC(8): F16H3/70F16H57/08F16H57/10
CPCF16H2200/2023F16H2200/2046F16H3/663F16H2200/2007F16H2200/2097
Inventor 毕尔·拉基斯安德鲁·诺瓦斯基莎拉·怀克恩克里斯·瑞斯约翰·斯多克斯弗兰克·鲍尔林健杨加丰
Owner CHERY AUTOMOBILE CO LTD
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