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GB/T 26780-2011The safety requirement of fuel system for compressed natural gas vehicle in the collision (English PDF)

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Issued by

General Administration of Quality Supervision, Inspection and Quarantine

Level / Type

National · Recommended

Issue date

July 20, 2011

Implementation date

January 1, 2012

Scope

GB/T 26780-2011 (The safety requirement of fuel system for compressed natural gas vehicle in the collision) is available as an English-translated PDF.

GB/T 26780-2011 — This Standard specifies the safety requirement and test methods of the fuel system for compressed natural gas vehicle in the collision.

This Standard is applicable to the M1 vehicles with fuel system adopting compressed natural gas, which include bi-fuel CNG vehicle and dedicated CNG vehicle; other related types of vehicles can also refer to this Standard for implementation.

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Document preview — GB/T 26780-2011

National Standard of the People's Republic of China

ICS: 43.040.60
Classification: T 20

Issued by: General Administration of Quality Supervision, Inspection and Quarantine

Foreword...3
1 Scope...4
2 Normative References...4
3 Terms and Definitions...4
4 Technical Requirements...5
5 Test Methods...5

Foreword

This Standard was drafted as per the rules specified in GB/T 1.1-2009.

The technical contents of this Standard refers to the United States FMVSS 303

Regulation Fuel System Integrity of Compressed Natural Gas Vehicles (2006 English

Version).

This Standard was proposed by the Ministry of Industry and Information Technology.

This Standard shall be under the jurisdiction of National Technical Committee for

Standardization of Vehicles (SAC/TC 114).

Drafting organizations of this Standard. China Automotive Technology & Research

Center, Dongfeng Peugeot Citroen Automobile Company LTD, Chery Automobile Co.,

Ltd., and Beiqi Foton Motor Co., Ltd..

Chief drafting staffs of this Standard. Sun Zhendong, Liu Guibin, Zhou Yang, Wang

Yan, Yang Jian, Wang Yang, Guo Yan, and Feng Yi.

The Safety Requirement of

Fuel System for Compressed

Natural Gas Vehicle in the Collision

1 Scope

This Standard specifies the safety requirement and test methods of the fuel system for

compressed natural gas vehicle in the collision.

This Standard is applicable to the M1 vehicles with fuel system adopting compressed

natural gas, which include bi-fuel CNG vehicle and dedicated CNG vehicle; other

related types of vehicles can also refer to this Standard for implementation.

2 Normative References

The following documents are essential to the application of this document. For the

dated documents, only the versions with the dates indicated are applicable to this

document; for the undated documents, only the latest version (including all the

amendments) are applicable to this document.

GB 11551 The Protection of the Occupants in the event of a Frontal Collision for

Passenger Vehicle

GB/T 17895 Natural Gas Vehicle and Liquefied Petroleum Gas Vehicle –

Vocabulary

3 Terms and Definitions

The following terms and definitions and those ones stipulated in GB/T 17895 are

applicable to this document.

3.1 Bi-fuel CNG vehicle

The vehicle with two mutually-independently fuel supply systems, thereof one set of

system supplies compressed natural gas, while the other set of system supplies the

fuel beyond the compressed natural gas; these two sets of fuel supply systems can

respectively rather than jointly supply fuels to the motor.

4 Technical Requirements

Respectively completer the rear-end collision test, frontal collision test, lateral collision

test specified in 5.2, 5.3, 5.4; the CNG fuel system after each collision test shall meet

the following requirements.

5 Test Methods

5.1 Preparation before test

5.1.1 Select and Reserve an appropriate location on the high-pressure piping system

of the test vehicle to install an inlet horn, where a three-way connector shall be

mounted; the two ends of the three-way connector shall be installed pressure sensor

and cut-off valve for gas inlet and outlet, and the third end shall be connected with

high-pressure piping system.

5.2 Rear-end collision test

The test forms and methods shall be performed as per the relevant provisions of GB

20072; while after the test, it shall conform to the provisions of Chapter 4.

5.3 Frontal collision test

The test forms and methods shall be performed as per the relevant provisions of GB

11551; while after the test, it shall conform to the provisions of Chapter 4.

5.4 Lateral collision test

The test forms and methods shall be performed as per the relevant provisions of GB

20071; while after the test, it shall conform to the provisions of Chapter 4.

5.5 Sealability test of CNG fuel system

After the completion of collision test, connect the pressure gauge with working

pressure range of 1.5 times with pressure sensor end on the three-way connector;

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 5 pages — is available in the English PDF.

Referenced standards

Normative references

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