GB 17675-1999 English PDF (GB17675-1999)

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GB 17675-1999: Steering system of motor vehicles. Basic requirements
GB 17675-1999
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
EQV 70/311/EEC
Steering system of motor vehicles – Basic requirements
ISSUED ON. FEBRUARY 14, 1999
IMPLEMENTED ON. JANUARY 1, 2000
Issued by. State Bureau of Quality Technical Supervision
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Terminology ... 4 
3 Basic requirements ... 5 
4 Test conditions ... 6 
Foreword
This standard equivalently adopts 70/311/EEC "Member States agreement on
the car and its trailer steering mechanism". However, this standard lists
separately the experience conditions in accordance with the Chinese standard
compilation habits, AND adds the definition of “manoeuvring action time”.
This standard has also added the content of Clause 11 of the Japanese safety
standards, AND the specifications on the steering in GB 7258-1997 “Safety
specifications for power-driven vehicles operating on roads”.
This standard was proposed by the State Administration of Machinery Industry.
This standard shall be under the jurisdiction of the National Automotive
Standardization Technical Committee.
This standard was responsibly drafted by China Automotive Technology and
Research Center.
The drafter of this standard. Jiang Biqi.
As for this standard, the National Automotive Standardization Technical
Committee is responsible for the interpretation.
Steering system of motor vehicles – Basic requirements
1 Scope
This standard specifies the basic requirements for the design and installation
of the steering system.
This standard applies to the category M and category N road vehicles.
2 Terminology
This standard uses the following definitions.
2.1 Steering system
It refers to the mechanism which changes the vehicle travel direction AND is
composed of steering control mechanism, steering gear, steering wheels and
special mechanisms.
2.2 Steering control mechanism
It refers to the mechanism which is directly manipulated by the driver to control
the vehicle travel direction.
2.3 Steering gear
It refers to all the mechanisms between the steering control mechanism and the
steering wheel (except for special mechanisms). It may be mechanical,
hydraulic, pneumatic, electric, or any combination thereof. The steering gear of
trailer refers to all the mechanisms which transfer all the required force to the
trailer to change the travel direction.
2.4 Steering wheels
It refers to the wheels whose direction change can change the vehicle travel
direction.
2.5 Special mechanism
The special mechanism is also an integral part of the steering system, which
can generates auxiliary or independent power in order to independently or
individually realize the vehicle direction change. It may be mechanical,