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GB 11551-2014 English PDF (GB11551-2014)

GB 11551-2014 English PDF (GB11551-2014)

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GB 11551-2014: The protection of the occupants in the event of a frontal collision for motor vehicle

This Standard specifies terms and definitions, requirements and test methods for occupant protection of front seats for frontal seating in frontal collision of vehicles. This Standard is applicable to vehicles of M1 category and N1 vehicles of which the maximum total mass is not greater than 2500 kg as well as multipurpose goods vehicle.
GB 11551-2014
GB
NATIONAL STANDARD OF
THE PEOPLE REPUBLIC OF CHINA
ICS 43.020
T 09
Replacing GB 11551-2003
The protection of the occupants in the event of a
frontal collision for motor vehicle
ISSUED ON. SEPTEMBER 3, 2014
IMPLEMENTED ON. JANUARY 1, 2015
Issued by. General Administration of Quality Supervision, Inspection
and Quarantine;
Standardization Administration Committee.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 5
4 Requirements ... 7
5 Test methods ... 12
6 Vehicle type change and expansion ... 18
7 Transition period requirements of standard implementation ... 18
Annex A (Normative) Determination procedure of riding position H point and actual seat back angle ... 19
Annex B (Normative) Determination of performance criterions ... 30
Annex C (Normative) Dummy arrangement and restraint system adjustment 33 Annex D (Normative) Testing technology. instruments ... 37
Annex E (Normative) Pulley test program ... 44
Foreword
All technical content of this Standard are mandatory.
This Standard was drafted in accordance with the rules given in GB/T
1.1-2009.
This Standard replaces GB 11551-2003 The protection of the occupant in the event of a frontal collision for passenger car.
The main differences between this Standard and GB 11551-2003 are as
follows.
- modified the standard name to ?€?The protection of the occupants in the event of a frontal collision for motor vehicle?€?;
- modified the standard application scope which was expanded from ?€?M1
category vehicle?€? to ?€?M1 category vehicle and N1 category vehicle of
which the maximum design total mass is not greater than 2500 kg as
well as multipurpose goods vehicle?€? (see Clause 1);
- added the definition of ?€?multipurpose goods vehicle?€? (see 3.10);
- added information about airbag and warning information to child restrain system after airbag information is used at the seat with airbag protection (see 4.1.4 and 4.1.5);
- added and modified part of the technical requirements (see 4.2);
- added the change and expansion of vehicle type (see Clause 6);
- added pulley test program (see Annex E).
This Standard was proposed by Ministry of Industry and Information
Technology of the People 's Republic of China.
This Standard was proposed by and shall be under the jurisdiction of National Technical Committee on Road Vehicles of Standardization Administration of China (SAC/TC 114).
Main drafting organizations of this Standard. China Automotive Technology and Research Center, Hafei Automobile Company Limited, Beiqi Foton Motor Company Limited.
The drafting organizations of this Standard. SAIC-GM-Wuling Automobile Co., Ltd., National Automobile Quality Supervision and Inspection Center
(Xiangyang), Chongqing Changan Automobile Company Limited, Zhejiang
The protection of the occupants in the event of a
frontal collision for motor vehicle
1 Scope
This Standard specifies terms and definitions, requirements and test methods for occupant protection of front seats for frontal seating in frontal collision of vehicles.
This Standard is applicable to vehicles of M1 category and N1 vehicles of which the maximum total mass is not greater than 2500 kg as well as
multipurpose goods vehicle.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 3730.1 Motor vehicles and trailers - Types - Terms and definitions GB 14166 Safety-belts, restraint systems, child restraint systems and
ISOFIX child restraint systems for occupants of power-driven vehicles
GB 14167 Safety-belt anchorages, ISOFIX anchorages systems and
ISOFIX top tether anchorages for vehicles
GB/T 15089 Classification of power-driven vehicles and trailers
GB/T 20913-2007 The protection of the occupants in the event of an
off-set frontal collision for passenger car
3 Terms and definitions
For the purposes of this document, the following terms and definitions defined in GB/T 20913-2007 apply.
3.1 protective system
internal mounting parts and devices for restraining occupants
3.2 type of protective system
protective devices which have no differences in the following main aspects. - manufacturing technology;
- dimensions;
- material.
3.3 angle of impact
the angle between the line perpendicular to the front surface of the barrier and the direction of travel of the longitudinal direction of the vehicle 3.4 barrier face
the part of face of which the barrier is against the plywood
3.5 vehicle type
vehicles which have no differences in the following main aspects.
- the length and width of the vehicle that adversely affect by the crash test results;
- the structure, dimensions, profile and material of the vehicle part in front of the transverse plane passing through the driver seat "R" point
adversely affecting the results of the crash test;
- the shape and internal dimensions as well as the type of protection
system of the passenger compartment that adversely affect the results
of the crash test;
- the layout of the engine (front, rear or center) and the direction of the arrangement (horizontal or vertical);
- unladen kerb mass of vehicle that adversely affect the results of the crash test;
- optional equipment or devices provided by the manufacturer hat
adversely affect the results of the crash test.
3.6 passenger compartment
space for occupants which is enclosed by roof, floor, side wall, door, glass window and front, rear or rear seat back support plate
3.7 R point
warning label shall contain the information shown in 4.1.5.
4.1.5 For vehicle equipped with one or more frontal protective airbags, the information should be prompted that extreme risk shall be generated after rear-facing child restraint system is used on the seat protected by a front airbag.
- this information should contain at least the style and content of the warning label shown in Figure 1; the minimum overall size is 120 mm ??
60 mm or the same area. the above-mentioned label may take other
forms but the text should follow the warnings in Figure 1;
- the warning label should contain warnings in Chinese;
- for front passenger seats protected by frontal airbags, the warning label should be durably retained on each surface of the passenger side
sunshade panel, regardless of whether the sun visor is in the open or
closed position, at least one warning label on the sun visor is visible at all times. Or, a warning label is affixed to the visible surface of the visor, another warning label should be attached to the ceiling behind the sun
visor, at least one warning label is visible at all times, the text of the warning label should be easily readable by the user at the seat; for other vehicles protected by front airbags, the warning label shall be affixed directly in front of the associated seat; for user who wants to install a rear-facing child restraint system in this seat, it should be clearly visible at all times; the text of the warning label should be easily readable by the user at the seat; when this provision is not applicable to when the child restraint system is installed, it shall have the seat with automatic release of frontal airbag protection;
- the following information should be displayed in the vehicle manual. ?€?Do not use the rear-facing child restraint system on a seat that is protected by the front airbag (activated)?€?, and with warning illustration.
4.2.6 During the collision, the fuel supply system should not leak.
4.2.7 After the impact test, if there is continuous liquid leakage in the fuel supply system, the average leakage rate shall not be greater than 30 g/min for the first 5 minutes after the collision; if the liquid from the fuel supply system is mixed with liquid from other systems, and different liquids are not easily separated and identified, then all liquid collected shall be included in the assessment of continuous leakage.
5 Test methods
5.1 Facilities and vehicle preparation
5.1.1 Test site
The test site should be large enough to accommodate runways, barriers and the necessary technical facilities for testing. At least 5 m of the runway before the barrier shall be level, flat and smooth.
5.1.2 Barrier
The barrier is made of reinforced concrete. The front width is not less than 3 m and the height is not less than 1.5 m. Barrier thickness should ensure that its mass is not less than 7 ?? 104 kg. The front surface of the barrier should be plumb. The normal line should form a 0?? angle with the straight direction of the vehicle. And the barrier surface should be covered with a plywood of 20 mm ?? 1 mm thickness and in good condition (as shown in Figure 5). If
necessary, it should use a secondary positioning device to secure the barrier to the floor so ...

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