Electric control mechanical automatic gearbox gear shifting oil cylinder for automobile

An automatic transmission and shifting oil cylinder technology, applied in mechanical equipment, transmission parts, transmission control and other directions, can solve the problems of inflexibility, poor motor control reliability, poor connection performance, etc., to improve sensitivity and flexibility, reduce Good mechanical resistance and sealing performance

Active Publication Date: 2007-06-27
WUHU WANLIYANG TRANSMISSION CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

The reliability of motor control is poor, and its control mechanism has changed a lot from the mechanical transmission. It is necessary to integrate the gear selection shaft, gear selection parts and other components into the gear shift control mechanism
The hydraulic control structure is complex and there are many control elements
The gear shifting method used in hydraulic control is mostly bolted connection, the connection performance is poor, the strength cannot be guaranteed, and it is not flexible enough
The mechanical wear of the bolted connection is very serious, which can easily lead to the failure of the entire mechanism
At the same time, the shift position cannot be accurately judged, so the shift control unit cannot accurately control the shift selection.
Chinese Patent No. CN01140543.0 patent specification discloses a technology of oil cylinder for gear shifting module, which has progressed and innovated in technology, but still fails to completely overcome the above defects

Method used

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  • Electric control mechanical automatic gearbox gear shifting oil cylinder for automobile

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Embodiment Construction

[0018] The structure of the present invention expressed in Fig. 1, the present invention is a kind of electric control mechanical type automatic transmission shift oil cylinder of automobile, comprises the oil cylinder body 4 of coaxial line, piston 11, and the inside of oil cylinder body 4 is a through hole , with the piston 11 as a clearance fit, the oil cylinder block 4, the piston 11 and an oil cylinder end cover 2 at both ends of the oil cylinder block 4 form two oil chambers, and the two oil chambers communicate with the oil hole 16 and the oil hole 17 respectively , The oil hole 16 and the oil hole 17 are arranged at both ends of the oil cylinder block 4 near the end cover 2 of the oil cylinder. The axial position of the cylinder end cover 2 is limited by the cylinder end cover snap ring 1, which is stuck in the ring groove of the inner hole of the cylinder block 4, and the oil cylinder end cover snap ring 1 is an elastic inner retaining ring , after the oil cylinder en...

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Abstract

A gearshift cylinder for the electrically controlled mechanical automatic speed variator of car is composed of a cylinder body and a piston in cylinder body. Said cylinder body has two end covers to form two oil cavities and an opening for connecting piston with a gearshift arm. Its hydraulic unit is sealed by piston, cylinder body, intermediate bushing, and sealing ring. A gearshift position sensor is used for detecting the gearshift stroke.

Description

technical field [0001] The invention relates to an automobile transmission system, and more specifically, the invention relates to an automobile electronically controlled mechanical automatic transmission shift oil cylinder. Background technique [0002] At present, the control methods of electronically controlled mechanical automatic transmissions of automobiles are all controlled by electric motor or hydraulic pressure. The reliability of motor control is poor, and its control mechanism has changed a lot from the mechanical transmission. It is necessary to integrate the gear selection shaft, gear selection parts and other components into the gear shift control mechanism. The hydraulic control structure is complex and there are many control elements. The shifting method adopted by the hydraulic control is mostly a bolt connection method, the connection performance is poor, the strength cannot be guaranteed, and it is not flexible enough. The mechanical wear of the bolt co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H57/00F16H59/04F15B15/02
Inventor 杨加丰郑勇廉星慧
Owner WUHU WANLIYANG TRANSMISSION CO LTD
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