1 Subject Content and Application Scope
This standard specifies test method for determination of towing performance of motor vehicles.
This standard is applicable to motor vehicles with towing performance.
2 Normative References
GB/T 12534 Motor Vehicles-General Rules of Road Test Method
3 Term
3.1 Towing hook traction force
It refers to the traction force measured on the towing hook when the motor vehicles drive at a constant speed on a level pavement.
4 Test Facilities and Equipment
4.1 Load towing or common towing capable of applying loads.
4.2 Draw bar
4.3 Traction indicator with automatic recording and traction force sensors with proper measuring range, 2% measurement accuracy.
4.4 Speed meters, 1% measurement accuracy.
4.5 Fuel flowmeter, 1% measurement accuracy.
4.6 Timer, 0.1s of least count.
