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Automatic transmission

A technology of automatic transmission and transmission housing, which is applied in the direction of vehicle gearbox, transmission box, transmission element, etc., can solve the problems of uneven pressure action and poor durability of automatic transmission.

Inactive Publication Date: 2008-02-20
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, uneven pressure acts on the brake pads 32 and the brake disc 34, thereby deteriorating the durability of the automatic transmission.

Method used

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Embodiment Construction

[0035] Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] FIG. 1 is a schematic diagram of a power train applied to an automatic transmission according to an exemplary embodiment of the present invention.

[0037] The power train of this automatic transmission includes a first planetary gear set PG1, a second planetary gear set PG2, and a third planetary gear set PG3, which are single pinion planetary gear sets. The first planetary gear set PG1 is arranged at the entrance of the automatic transmission, and the second planetary gear set PG2 and the third planetary gear set PG3 are successively arranged near the first planetary gear set PG1.

[0038] In addition, as shown in FIG. 1, the power train includes an input shaft 100 for receiving torque from an engine (not shown), an output shaft 200 for outputting torque from the power train, and a transmission housing 300.

[0039] The first planeta...

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Abstract

An automatic transmission includes: a transmission case; a support installed vertically in the transmission case; a hydraulic pump housing installed in the transmission case; a hydraulic pressure chamber attached to a first side of the support; a transfer drive gear for transferring torque to an output shaft, the transfer drive gear being attached to a second side of the support; a brake retainer coupled to the hydraulic pressure chamber and attached to the center support; a first brake receiving a first operating hydraulic pressure from the hydraulic pressure chamber and splined to the transmission case through the brake retainer; and a second brake receiving a second operating hydraulic pressure from the hydraulic pump housing, connected to the brake retainer, and splined to the transmission case.

Description

[0001] Cross References to Related Applications [0002] This application claims priority and benefit from Korean Patent Application No. 10-2006-0076791 filed in the Korean Intellectual Property Office on Aug. 14, 2006, the entire contents of which are hereby incorporated by reference. technical field [0003] The present invention relates to an automatic transmission. More particularly, the present invention relates to an automatic transmission having improved durability as a result of brake mounts supporting first and second brakes with uniform pressure. Background technique [0004] The shift mechanism of a typical automatic transmission uses a combination of multiple planetary gear sets. A power train of such an automatic transmission including a plurality of planetary gear sets changes a rotational speed and a torque received from a torque converter of the automatic transmission, and transmits the changed torque to an output shaft. [0005] Additionally, brakes variab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/44F16H57/10
CPCF16H2200/2046F16H2200/0052F16H2057/02047F16H3/66F16H2200/201F16H57/02F16H63/3026F16H3/44
Inventor 朴盛焄
Owner HYUNDAI MOTOR CO LTD