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GB/T 44853-2024Urban rail transit vehicles—Electro-pneumatic brake system (English PDF)

城市轨道交通车辆电空制动系统

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 26, 2024

Implementation date

May 1, 2025

Scope

GB/T 44853-2024 is the English-translated version of 城市轨道交通车辆电空制动系统.

GB/T 44853-2024 is the Chinese national standard covering the compressed air brake under electric control that stops a metro or urban rapid transit car — the operating environment it has to work in, the technical requirements on the system, the test methods that verify them, the inspection rules, and the marking, packaging, transport and storage, with the vehicle-controlled and the bogie-controlled arrangements both covered, since where the control unit sits decides how finely brake effort can be distributed. First edition, under the Ministry of Housing and Urban-Rural Development. In force from 1 May 2025. Issued on 26 October 2024, it has been in force since 1 May 2025.

Document preview — GB/T 44853-2024

National Standard of the People's Republic of China

ICS: 45.060
Classification: S 33

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface... III 1 Scope1
2 Normative references1
3 Terms and Definitions1
4 Operating environment conditions4
5 Technical Requirements4
6 Test Methods7
7 Inspection Rules13
8 Marking, packaging, transportation and storage14
References15

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting is required.

Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.

This document is proposed by the Ministry of Housing and Urban-Rural Development of the People's Republic of China.

This document is under the jurisdiction of the National Technical Committee for Standardization of Urban Rail Transit (SAC/TC 290).

This document was drafted by: CRRC Qingdao Sifang Rolling Stock Research Institute Co., Ltd., CRRC Corporation Limited, CRRC Qingdao Sifang Locomotive CRRC Changchun Railway Vehicles Co., Ltd., CRRC Zhuzhou Electric Locomotive Co., Ltd., CRRC Braking System Co., Ltd.

Company, Beijing Zongheng Electromechanical Technology Co., Ltd., Tongji University, Southwest Jiaotong University, Beijing Subway Operation Co., Ltd., Guangzhou Metro Group Group Co., Ltd., Shenzhen Metro Construction Group Co., Ltd., Chengdu Rail Transit Group Co., Ltd., China Academy of Railway Sciences Group Co., Ltd.

The company's Locomotive and Rolling Stock Research Institute, China Railway Inspection and Certification (Qingdao) Vehicle Inspection Station Co., Ltd., and Knorr-Bremse Rolling Stock Equipment (Suzhou) Co., Ltd.

The main drafters of this document are: Li Peishu, Feng Yong, Zhu Jianchun, Wang Yuquan, Yan Lei, Shi Zhewen, An Zhen, Wang Linmei, Wang Zheng, Wang Xiaodong, Meng Fanhui, Ren Depeng, Yang Jun, Fan Guixin, Tian Chun, Wang Junyong, Li Li, Long Jing, Liang Jinfa, Chen Ying, Yang Xin, Sun Feng, and Zhao Jianfei.

Electro-pneumatic braking system for urban rail transit vehicles

1 Scope

This document specifies the operating environment conditions, technical requirements, test methods, inspection rules, Marking, packaging, transportation and storage.

This document is applicable to the electric-pneumatic braking systems used in subways and urban rapid rail vehicles.

2 Normative references

GB/T 4208-2017

GB/T 21562.2-2015

ISO 2151

ISO 3744

ISO 8573

3 Terms and Definitions

The following terms and definitions apply to this document.

3.1 pneumatic brake; air brake

A braking method that is controlled by compressed air and uses compressed air as the motive force to generate brake shoe or brake pad pressure.

3.2 Electro-pneumatic brake system; EP brake system

Electrically controlled air brake system.

Note. It is divided into vehicle control braking system and frame control braking system.

3.3 Service brake

Braking that regulates the train's speed or stops the train at a predetermined location.

[Source. GB/T 4549.3-2004, 2.7]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 20 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 4208-2017Degrees of protection provided by enclosures (IP code)

GB/T 21562.2-2015 · ISO 2151 · ISO 3744 · ISO 8573

Editions of GB/T 44853

Edition	Title	Revision	Status
GB/T 44853-2024	Urban rail transit vehicles - Electro-pneumatic brake system	current edition	Current

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