Standard No.:	GB/T 12679-1990
Chinese Name:	汽车耐久性行驶试验方法
English Name:	Motor vehicles－Durability running－Test method
Professional Classification:	T04 Basic standards and general methods
Professional Classification:	GB National Standard
ICS Classification:	43.020
Issued by:
Issued on:	1990-01-02
Implemented on:	1991-10-01
Status:	VALID
Language:	English
File Format:	PDF
Word Count:
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1 Subject Content and Application Scope
This standard specifies the durability running test method for motor vehicles.
This standard is applicable to batch-manufactured motor vehicles (mining dump trucks may make reference to this Standard).
2 Normative References
GB/T 12534 Motor Vehicles-General Rules of Road-Test Method
GB/T 12545 Motor vehicles-Fuel Consumption-Test Method
GB/T 12548 Motor vehicles-Speedometer and Odometer-Calibration Method
GB/T 12678 Motor vehicles-Durability Running-Test Method
JB 3743 Performance Test Code for Road Vehicle Engines
3 Terms
3.1 Motor vehicle durability
It is referred to capacity of the motor vehicles to complete their functions when specific technical or economic indicator limit is met under the specified operating and maintenance conditions.
3.2 Degree of motor vehicle durability
It is referred to the probability, under specified operating and maintenance conditions, that motor vehicles reach the first overhaul mileage without durable damage
3.3 Damage of motor vehicle durability
It is referred to abnormal frequent fatigue damage of motor vehicle components; excess abrasion; material degradation; degradation of basic mechanical design feature; exceeding specified limits; increasing maintenance expense; emergence of uneconomical or unsafe elements caused by further using. Consequently, a replacement of principal assembly or overhaul of motor vehicle is needed.