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Question:

What are the devices on these test car wheels that are used to test?

In front of the free light and Citroen test car is photographed in the same parking lot, the concept of 5 SUV is a separate, the wheel on the device looks the same. Ask this is a factory commissioning a vehicle project or the government of the new car mandatory test project ah.

Answer:

The first few sheets are not used for the fade experiment, the plate is a slip ring, connecting the thermocouple on the brake disc. The fade test mainly tests the temperature of the brakes after continuous braking and measures the degree of deterioration of the braking distance as the temperature rises.
Wheel six-force instrument that measures the force acting on wheels, for suspension adjustment and various analyzes

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