QC/T 1082-2017 English PDF (QCT1082-2017)

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QC/T 1082-2017: Electromotor for automobile electrical power steering
QC/T 1082-2017
AUTOMOBILE INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 43.040.50
T 23
Electromotor for automobile electrical power steering
ISSUED ON: APRIL 12, 2017
IMPLEMENTED ON: OCTOBER 01, 2017
Issued by: Ministry of Industry and Information Technology of PRC
Attachment:
Number, name and date of implementation of 22 automotive industry
standards
No. Standard number Standard name Number of standard replaced
Date of
implementation
301 QC/T 727-2017 Instrument for automobile and motorcycle QC/T 727-2007 2017-10-01
302 QC/T 803-2017 Oxygen sensor for automobile QC/T 803.1-2008 2017-10-01
303 QC/T 1072-2017 Gear position sensor for automobiles 2017-10-01
304 QC/T 1073.1-2017 Accelerometers for automobiles - Part 1: Linear accelerometers 2017-10-01
305 QC/T 1074-2017 Technical specifications for automotive parts remanufacturing products 2017-10-01
306 QC/T 1075-2017
Technical conditions for metal
honeycomb carrier of exhaust catalytic
converter
2017-10-01
307 QC/T 777-2017
Technical conditions for
electromagnetic fan clutch of
automobile
QC/T 777-2007 2017-10-01
308 QC/T 1076-2017
Performance requirements and test
methods for continuously variable
transmission (CVT)
2017-10-01
309 QC/T 1077-2017
Terminology and definitions for
classification of automatic control
transmission for automobile
2017-10-01
310 QC/T 1078-2017 Advertising vehicle 2017-10-01
311 QC/T 1079-2017 Suction and delivery vehicle 2017-10-01
312 QC/T 1080-2017 Mobile loudspeaker for popularization of science 2017-10-01
313 QC/T 1081-2017 Electric power steering device for automobile 2017-10-01
314 QC/T 1082-2017 Motor for electric power steering device of automobile 2017-10-01
315 QC/T 1083-2017 Controller for electric power steering device of automobile 2017-10-01
316 QC/T 1084-2017 Sensor for electric power steering device of automobile 2017-10-01
317 QC/T 1085-2017 X-ray testing for light-alloy wheel of motorcycle 2017-10-01
318 QC/T 1086-2017 Technical conditions for range extenders for electric vehicles 2017-10-01
Table of Contents
Foreword ... 7 
1 Scope ... 8 
2 Normative references ... 8 
3 Terms and definitions ... 9 
4 Technical requirements ... 10 
5 Test methods ... 13 
Electromotor for automobile electrical power steering
1 Scope
This standard specifies the general requirements, technical requirements, test
methods for electromotor for automobile electrical power steering.
This standard applies to electromotor for automobile electrical power steering
(hereinafter referred to as motors).
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 standard.
GB 755 Rotating electrical machines - Rating and performance
GB/T 2423.1 Environmental testing for electric and electronic and electronic
products - Part 2: Test methods - Tests A: Cold
GB/T 2423.2 Environmental testing for electric and electronic products - Part
2: Test methods - Tests B: Dry heat
GB/T 2423.3 Environmental testing - Part 2: Testing method - Test Cab:
Damp heat, steady state
GB/T 2423.17 Environmental testing for electric and electronic products -
Part 2: Test method - Test Ka: Salt mist
GB/T 2423.22 Environmental testing - Part 2: Tests methods - Test N:
Change of temperature
GB/T 5179 Terms and definitions of automotive steering system
GB/T 2423.34 Environmental testing - Part 2: Test methods - Test Z/AD:
Composite temperature/humidity cyclic test
GB/T 4942.1 Degrees of protection provided by the integral design of
rotating electrical machined (IP code) - Classification
GB 7345 General requirements for electrical machine for automatic control
3.6
Moment of inertia, J
A measure of the inertia (the characteristic that a rotating object maintains
its uniform circular motion or stationary) as the rotating member rotates
about the axis.
4 Technical requirements
4.1 General requirements
4.1.1 Motor.
The motor is manufactured in accordance with the product drawings and
technical documents as approved by the prescribed procedures.
4.1.2 Working temperature.
The motor shall be able to operate normally within the temperature range of -
40 °C ~ +85 °C or +105 °C (the motor for electric power steering is installed
outside the cab).
4.1.3 Relative humidity.
The relative humidity that the motor can withstand shall be ≤ 95% RH.
4.1.4 Working voltage.
4.1.4.1 Nominal voltage: 12 V or 24 V.
4.1.4.2 Allowable voltage variation range:
a) 10.8 V ~ 16 VC (nominal voltage 12 V);
b) 21.6 V ~ 32 V (nominal voltage 24 V).
4.1.5 Direction of rotation of motor.
Clockwise and counterclockwise alternate in both directions.
4.1.6 The motor is a short-time working system.
According to the provisions of GB 755, The S2 is 3 min.
4.1.7 Requirements of testing instruments and equipment.
4.1.7.1 Within the temperature range of 23 °C ± 5 °C, the measurement
accuracy of the torque, force, speed, current, voltage shall not be less than 0.5%
The noise at rated speed shall meet the manufacturer's requirements.
4.2.5 Insulation’s withstanding voltage performance and insulation resistance.
4.2.5.1 Insulation’s withstanding voltage performance.
The motor is not allowed to have spark flashing or breakdown.
4.2.5.2 Insulation resistance.
At room temperature, the insulation resistance between the lead wire of the
motor and the casing shall be ≥ 50 MΩ. After the combined
temperature/humidity cyclic test, the insulation resistance between the lead
wire of the motor and the casing shall be ≥ 1 MΩ.
4.2.6 Static friction torque and fluctuations.
The static friction torque and fluctuation of the motor shall meet the
manufacturer's requirements.
4.3 Environment
4.3.1 Temperature shock.
After the test, the motor shall be able to work normally and shall meet the
requirements of 4.2.1.
4.3.2 Combined temperature/humidity cycle.
After the test, the motor shall be able to work normally and shall meet the
requirements of 4.2.1.
4.3.3 Corrosion resistance.
4.3.3.1 After the corrosion resistance test, the motor shall be able to work
normally and shall meet the requirements of 4.2.1.
4.3.3.2 The area of white spot of surface corrosion shall not exceed 20%. It
does not allow for red rust spots (only the exposed parts of the motor and device
after assembly are evaluated).
4.3.3.3 The surface protection layer shall meet the requirements of TQ6 in QC/T
484.
4.3.4 Dustproof and waterproof.
When the motor is installed outside the cab, the motor (only the exposed parts
of the motor and the device after assembly are evaluated) shall meet the
requirements for dustproof and waterproof. The degree of protection shall reach
IP65.
4.4 Durability and mechanical strength
4.4.1 Durability (environmental operating life).
4.4.1.1 After the motor is subjected to durability test, it shall meet the
requirements of 4.2.1.
4.4.1.2 The change of noise after the test shall be ≤ 30%.
4.4.2 Vibration.
4.4.2.1 After the motor is subjected to vibration test, it is not allowed to have
visible crack or fracture.
4.4.2.2 It shall meet the requirements of 4.2.1.
5 Test methods
5.1 Test condit...