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Title:
TRAIN BRAKE CYLINDER PRESSURE CONTROL SYSTEM AND RAIL TRAIN
Document Type and Number:
WIPO Patent Application WO/2019/119491
Kind Code:
A1
Abstract:
A train brake cylinder pressure control system, comprising: a load pressure feedback apparatus (10) for generating a corresponding load pressure according to a load status of a train; a train brake reservoir (20) for providing a brake reservoir pressure; a dispensing valve (30) for adjusting a train brake pipe pressure and the brake reservoir pressure to output indirect brake pre-control pressures; a bi-directional valve (40) for selecting and outputting the greater one of the two pre-control pressures; and a relay valve (50) for adjusting the plurality of input pressures and outputting a final brake cylinder pressure. By implementing the graduated brake and the graduated release of a train by means of a dispensing valve (30) and using the input amount of the dispensing valve as a parameter that affects the overall adjustment effect of the relay valve (50), trains having a same speed and different loads stop, using a final brake cylinder pressure, at a same brake distance with a same deceleration, so that the probability of an excessive brake force in an unloaded state is reduced. Also provided is a rail train provided with the train brake cylinder pressure control system.

Inventors:
QIAO, Feng (No 2001, Changke RoadChangchun, Jilin 0, 130000, CN)
XIN, Zhiqiang (No 2001, Changke RoadChangchun, Jilin 0, 130000, CN)
MA, Yongjing (No 2001, Changke RoadChangchun, Jilin 0, 130000, CN)
ZHAO, Yangkun (No 2001, Changke RoadChangchun, Jilin 0, 130000, CN)
Application Number:
CN2017/119177
Publication Date:
June 27, 2019
Filing Date:
December 28, 2017
Export Citation:
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Assignee:
CRRC CHANGCHUN RAILWAY VEHICLES CO., LTD. (No 2001, Changke RoadChangchun, Jilin 0, 130000, CN)
International Classes:
B60T8/18
Foreign References:
US4417767A1983-11-29
CN107298111A2017-10-27
CN102167021A2011-08-31
JPH0867240A1996-03-12
JPS62163853A1987-07-20
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (7th Floor, Scitech PlaceNo.22, Jian Guo Men Wai Ave., Chao Yang District, Beijing 4, 100004, CN)
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