Standard No.:	GB 17675-2021
English Name:	Steering system of motor vehicles—Basic requirements
Chinese Name:	汽车转向系 基本要求
Chinese Classification:	T23    Steering and operation systems
Professional Classification:	GB    National Standard
ICS Classification:	43.040.50 43.040.50    Transmissions, suspensions 43.040.50
Issued by:	SAMR, SAC
Issued on:	2021-02-20
Implemented on:	2022-1-1
Status:	valid
Superseding:	GB 17675-1999 Steering system of motor vehicles - Basic requirements
Language:	English
File Format:	PDF
Word Count:	13000 words
Price(USD):	340.0
Delivery:	via email in 1 business day

1 Scope This standard specifies the terms and definitions, technical requirements and test methods for the steering system of motor vehicles. This standard is applicable to Categories M and N vehicles and Category O trailers specified in GB/T 15089. This standard is not applicable to: ——pneumatic transmission steering system; ——vehicles with autonomous steering system specified in 3.1.1.5. 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/T 3730.2 Road vehicle - Masses - Vocabulary and codes GB/T 3730.3 Motor vehicles and towed vehicles - Dimensions of vehicles - Terms and definitions GB/T 5053.3 Road vehicles - Connectors for the electrical connection of towing and towed vehicles - Definitions tests and requirements GB/T 5563 Rubber and plastics hoses and hose assemblies - Hydrostatic testing GB/T 7939 Hydraulic fluid power - Hose assemblies - Test methods GB/T 9574 Rubber and plastics hoses and hose assemblies - Ratios of proof and burst pressure to maximum working pressure GB/T 12540 Minimum turning circle diameter, minimum turning clearance circle diameter and out value test method for motor vehicles GB/T 15089 Classification of power-driven vehicles and trailers GB/T 20716.1 Road vehicles - Connectors for the electrical connection of towing and towed vehicles - Part 1: Connectors for braking systems and running gears of vehicles with 24V nominal supply voltage GB/T 20718 Road vehicles - Connectors for the electrical connection of towing and towed vehicles - 13-pole connector for vehicles with 12V nominal supply voltage GB/T 34590 (All parts) Road vehicles - Functional safety GB 34660 Road vehicles - Requirements and test methods of electromagnetic compatibility GB/T 35360 Motor vehicle - Steering system - Terms and definitions ISO 2575: 2010 Road vehicles - Symbols for controls, indicators and telltales 3 Terms and definitions For the purposes of this document, the terms and definitions given in GB/T 3730.1, GB/T 3730.2, GB/T 3730.3, GB/T 12540, GB/T 15089, GB/T 34590 and GB/T 35360 as well as the following apply. 3.1 Basic terms 3.1.1 steering system system for changing or maintaining the driving direction of a vehicle Note: It includes steering control equipment, steering transmission equipment, steered wheels and energy supply equipment (if any). 3.1.1.1 steering control equipment operating mechanism in the steering system that controls the steering with or without the direct intervention of the driver Note: For the steering system in which the steering force is wholly or partially provided by the muscle strength of the driver, the steering control equipment includes all components that convert the steering control force into steering force by mechanical, hydraulic or electric means. 3.1.1.2 steering transmission equipment combination of parts and components that form a functional connection between the steering control equipment and the steered wheels for realizing control transmission and/or energy transmission Note: According to the control and/or energy transmission mode, it may be divided into mechanical type, hydraulic type, electric type and various combinations thereof. 3.1.1.2.1 control transmission function of transmitting a control signal command to control the action of the steering equipment 3.1.1.2.2 energy transmission function of transmitting energy to steered wheels to control/adjust steering 3.1.1.3 steered wheels wheels whose moving direction can be changed directly or indirectly relative to the longitudinal axis of the motor vehicle, so as to control the driving direction of the motor vehicle Note: Components such as steering knuckle and kingpin are covered. 3.1.1.4 energy supply equipment functional equipment in steering system that is used to provide energy, control energy distribution and store energy Note: It includes storage reservoir, pipeline, wiring harness and medium, but excludes the engine (except the engine supplying energy to the power assisted steering system) and the driving of the engine to the energy source. 3.1.1.4.1 energy source component that provides energy in the required form 3.1.1.4.2 energy reservoir component of the energy supply equipment that stores the energy Note: For example, pressurizable hydraulic accumulator or vehicle battery. 3.1.1.4.3 storage reservoir component for storing working medium with internal pressure at normal pressure Note: For example, steering oil tank. 3.1.1.5 autonomous steering system vehicle integrated composite electronic control system that makes the vehicle travel along the determined or corrected path by responding to the reception and transmission of signals outside the vehicle; wherein, the driver is not required to have dominant control over the vehicle

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 3.1 Basic terms 3.2 Functional safety terms 4 Technical requirements 4.1 Requirements for motor vehicles 4.2 Requirements for trailers 4.3 Requirements for failure 4.4 Alarm signal 5 Test methods 5.1 Test conditions 5.2 Motor vehicle test 5.3 Trailer test 6 Implementation date Annex A (Normative) Supplementary requirements for vehicles with auxiliary steering equipment (ASE) Annex B (Normative) Functional safety requirements Annex C (Normative) Requirements for trailers with purely hydraulic steering transmission equipment Annex D (Normative) Special requirements for power supply of vehicle combination steering system