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GB 11557-2011 (GB11557-2011)

GB 11557-2011_English: PDF (GB11557-2011)
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Standard ID GB 11557-2011 (GB11557-2011)
Description (Translated English) The stipulation protecting drivers from being injured by motor vehicle steering mechanism
Sector / Industry National Standard
Classification of Chinese Standard T26
Classification of International Standard 43.040.60
Word Count Estimation 18,130
Date of Issue 2011-05-12
Date of Implementation 2012-01-01
Older Standard (superseded by this standard) GB 11557-1998
Quoted Standard GB 11551-2003; GB/T 15089-2001; GB/T 20913-2007; ISO 6487-2002
Adopted Standard ECE R12, MOD
Drafting Organization China Automotive Technology and Research Center
Administrative Organization National Automotive Standardization Technical Committee
Regulation (derived from) Announcement of Newly Approved National Standards No. 6 of 2011
Proposing organization National Development and Reform Commission
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, China National Standardization Administration Committee
Summary This Chinese standard specifies the steering mechanism in the front of the car during a collision damage on the driver 's technical requirements and test methods. This standard applies to M (1) type of vehicle and the maximum total mass of less than 1500kg of N (1) Vehicles, other vehicles may refer to this standard test.

Standards related to: GB 11557-2011

GB 11557-2011
ICS 43.040.60
T 26
Replacing GB 11557-1998
The stipulation protecting drivers from being injured
by motor vehicle steering mechanism
ISSUED ON. MAY 12, 2008
Issued by. General Administration of Quality Supervision, Inspection and
Standardization Administration Committee.
Table of Contents
Foreword ... 3 
1 Scope ... 6 
2 Normative references ... 6 
3 Terms and definitions ... 6 
4 Technical requirements ... 8 
5 Test methods ... 10 
Annex A (Informative) Comparison on clause numbers between this Standard
and ECE R12 ... 11 
Annex B (Normative) Frontal fixed barrier impact test ... 12 
Annex C (Normative) Human body module test ... 16 
Annex D (Normative) Impactor test ... 21 
Clause 4 of this Standard is mandatory; the rest are recommendatory.
The modification of this Standard adopts ECE R12 The uniform stipulation
protecting drivers from being injured by motor vehicle steering mechanism in
the collision of motor vehicles (English version) (Revision 3 and all subsequent
supplements, errata which were released prior to August, 2000).
This Standard was redrafted based on ECE R12. Annex A lists comparison
between clause numbers of this Standard and the ones of ECE R12.
Technical differences between this Standard and ECE R12 as well as reasons
are as follows.
- this Standard deleted ECE R12’s Clause 3 “Certification application”,
Clause 4 “Certification”, Clause 7 “Certification change and expansion of
vehicle type and steering control type”, Clause 8 “Production consistency”,
Clause 9 “Production inconsistency penalties”, Clause 10 “Instructions on
use”, Clause 11 “Official discontinued production”, Clause 12 “Name and
address of the certification testing department and the administrative
department”, Clause 13 “Transitional provisions” and Annex 1
“Certification notice”, Annex 2 “Certification mark layout” because the
standard system and the legal system were different and these were
content related to “certification procedures and certification mark”;
- this Standard deleted ECE R12’s 2.1 “Vehicle certification”, the term and
definition of “Steering control certification” in 2.3 because the standard
system and the legal system were different and these were content related
to “certification procedures and certification mark”;
- this Standard used Annex C of GB 11551-2003 to replace the content of
“car riding position H and the actual back rest angle” in Annex 6 of ECE
R12, so as to ensure that this Standard was consistent with the content of
“the car ride position H and the actual back rest angle” in GB 11551-2003;
- this Standard added the term and definitions of “R point” (see 3.17) in
Clause 3 because R point of driver’s seat should be used during human
body module impact test;
- added the content of “at this time, the determination procedure of the
dummy seat riding position H point and the actual seat back angle should
be carried out according to Annex C of GB 11551-2003” in Annex B
because the installation of the dummy during the test required adjustment
of the seat condition;
The stipulation protecting drivers from being injured
by motor vehicle steering mechanism
1 Scope
This Standard specifies technical requirements and test methods for driver's
injury in the process of frontal collision of vehicle steering mechanism.
This Standard is applicable to vehicles of M1 category and N1 vehicles of which
the maximum total mass is less than 1500 kg. Other vehicles shall refer to this
Standard to carry out the test.
2 Normative references
The following standards contain the provisions which, through reference in this
Standard, constitute the provisions of this Standard. For dated references,
subsequent amendments (excluding corrections) or revisions do not apply to
this Standard. However, the parties who enter into agreement based on this
Standard are encouraged to investigate whether the latest versions of these
documents are applicable. For undated reference documents, the latest
versions apply to this Standard.
GB 11551-2003 The protection of the occupant in the event of a frontal
collision for passenger car
GB/T 15089-2001 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
ISO 6487.2002 Road vehicles -- Measurement techniques in impact tests
-- Instrumentation
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 vehicle type
same type of vehicles having no differences in the following aspects.
- structure, dimensions, profile and material of the front of the vehicle
associated with the steering control;
- unladen kerb mass as defined in 3.16.
3.2 steering control type
same type of steering control having no differences in structure, dimensions,
profile, structural material, manufacturer
3.3 steering control
a steering wheel operated by the driver for controlling the direction of travel of
the vehicle
3.4 general steering control
steering control which can be installed in a variety of certified vehicle types of
which the difference between this steering control and steering column
connection does not affect its collision characteristics
3.5 air-bag
a flexible bag used for filling high pressure gas
- it is used to prevent or mitigate the injuries to vehicle driver by steering
control during the frontal collision;
- it is inflated in the process of vehicle collision by some device.
3.6 steering control rim
the circular part of steering wheel which is directly operated by the driver's hand
3.7 spoke
a stem structure connecting the wheel hub and the steering wheel rim
3.8 boss
the part located in the center of steering control, used to.
- connect the steering control and the steering shaft;
- transmit the steering moment on the steering device to steering shaft.
3.9 centre of the steering control boss
the point on the hub surface at the central axis of the steering shaft
be disregarded. For a protrusion mounted on a rigid support, if its surface
material is non-rigid material of which Shore (A) hardness is less than 50, it
shall only apply to the rigid support part.
4.4.2 The design, construction and installation of steering control should
ensure that during normal driving, there are no components which may hook
the driver's clothing or other dressings and affect driver’s normal driving.
4.4.3 If it only inspects steering control, it shall carry out the test according to
the provisions of C.2.1.3 and D.2.3 and meet requirements of 4.2 and 4.3.
4.4.4 For general steering control, it shall meet the following requirements.
- the steering column shall meet the requirements at all angular positions,
the test shall be carried out at least when the steering column is at the
maximum angle and minimum angular position of all vehicles permitted to
be installed;
- when the test is carried out at all positions of the impactor and the human
body module corresponding to the steering control, it shall be carried out
at least in the worst position of which the steering control is mounted on
the vehicle.
4.4.5 In order to facilitate the steering control connected with the steering
column, it can use transition pieces; however, it should ensure the use of
transition pieces has no effect on the energy absorption of the entire system.
All tests can use the transition pieces of same type.
5 Test methods
5.1 In order to verify the compliance with the requirements of Clause 4, it shall
carry out the tests according to the test methods specified in Annex B, Annex C
and Annex D. All measurement should be conducted according to ISO
5.2 An equivalent test approved by the relevant regulatory authority may be
used. A test report including the test methods used and test results should be
attached at the same time.
Annex B
Frontal fixed barrier impact test
B.1 Purpose
This test is to verify if the vehicle meets requirements of 4.1.
B.2 Installation, program and measuring instrument
B.2.1 Test site
The test site shall be large enough to accommodate runways, fixed barriers and
technical equipment necessary for testing. The runway within at least 5 m long
range from fixed barrier should be horizontal (the slope is less than 3% per 1m
length), flat and smooth.
B.2.2 Fixed barrier
It is made of reinforced concrete. The front width shall not be less than 3 m, the
height not less than 1.5 m; barrier thickness should ensure that its quality is not
less than 7 × 104 kg. Its front surface should be smooth, vertical and orthogonal
to the runway and the surface should cover (19 ± 1) mm thick quality plywood.
In the middle of the reinforced concrete structure and plywood, it can also be
placed with a steel plate of at least 25 mm thickness. It can use other collision