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Gear-shifting air cylinder of synchronizer

A shifting cylinder and synchronizer technology, applied in fluid pressure actuators, elements with teeth, belts/chains/gears, etc., to reduce shifting impact, improve shifting quality, and fast shifting response Effect

Pending Publication Date: 2018-02-02
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a synchronizer shift cylinder, aiming at the synchronizer shift mode, reducing the shift impact and shift noise during the synchronizer shift process, improving the service life of the synchronizer, and shortening the shift response time And improve shifting quality to overcome the deficiencies in the prior art

Method used

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  • Gear-shifting air cylinder of synchronizer

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Embodiment 1

[0025] This embodiment provides a synchronizer shift cylinder, which includes an end cover 1 , a cylinder body 2 , a piston 3 and a piston rod 4 .

[0026] The end cap 1 is in the shape of a cylinder, and one end thereof is provided with an end cap boss 11. The outer surface of the end cap boss 11 is a cylindrical surface, and the inside thereof is provided with a cylindrical cavity. The end cap 1, the end cap The centerlines of the cover boss 11 and the cylindrical concave cavity are on the same straight line.

[0027] Further, the cylinder body 2 is cylindrical with one end closed, one end of its opening is connected to the end cover 1, and a cylinder boss 21 facing the end cover 1 is formed on the inner wall surface of the other end. The outer surface of the cylinder boss 21 is a cylindrical surface, and the inside is provided with a cylindrical through hole. On the side wall of the cylinder body 2, a first throttle hole 22 and a second throttle hole 23 are opened. The thr...

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Abstract

The invention discloses a gear-shifting air cylinder of a synchronizer. The gear-shifting air cylinder comprises an end cover, a cylinder body, a piston and a piston rod; a first throttling hole and asecond throttling hole are formed in the side wall of the cylinder body; the first throttling hole is close to the closed end of the cylinder body; the second throttling hole is close to the openingend of the cylinder body; a gap I is radially formed between the outer surface of an end cover boss and the inner surface of the cylinder body; a gap II is radially formed between the inner surface ofa cylindrical concave cavity of the end cover boss and the outer surface of a piston boss; and a gap III is radially formed between the outer surface of a cylinder body boss and the inner surface ofa piston cavity. The gear-shifting air cylinder of the synchronizer has the advantages that aiming at a synchronizer gear-shifting mode, the gear-shifting impact and the gear-shifting noise in the gear-shifting process of the synchronizer can be reduced, the service life of the synchronizer can be prolonged, the gear shifting response time is shortened, the gear-shifting response time can be shortened, the gear shifting quality can be improved, and the defects in the prior art can be overcome.

Description

technical field [0001] The invention relates to the technical field of automatic transmissions, in particular to a synchronizer shift cylinder. Background technique [0002] The synchronizer shifting method is widely used in automatic transmissions, and the synchronizer shifting actuators include electric shift actuators, hydraulic shift actuators and pneumatic shift actuators. Pneumatic shifting has the advantages of low cost, quick shifting, and simple structure. Pneumatic shifting actuators are widely used in automatic transmissions equipped with synchronizers. [0003] Pneumatic shifting has the disadvantages of high compressibility of compressed air, strong time lag and strong nonlinearity, and the controllability of the pneumatic shifting actuator is poor. When ensuring good shifting quality, the control algorithm is complex and difficult to control. During the gear shifting process of the synchronizer, the response time of the pneumatic gear shift actuator is long, r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/14F15B15/20F16H61/30F16H61/04
CPCF15B15/1414F15B15/1428F15B15/1433F15B15/1447F16H61/0403F16H61/30
Inventor 于跃王雷陈暕王巍巍
Owner CHINA FIRST AUTOMOBILE
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