1. Description
refers to the thermal decay at a high temperature, mechanical properties decrease, abbreviated thermal decay.
For example: automotive braking system (e.g., disc brakes, drum brakes) after a certain number of braking, the brake pad temperature rises, after reaching a certain temperature conditions, the braking effect of the brake system reaches after the best, but more than the maximum temperature limit, the braking effect will be getting worse (the test car 100km / h 0km / braking distance, ~ h a certain number of braking, the braking distance will be more long, longer represents the braking effect, the worse), this phenomenon is the brake thermal decay.
Another example: high temperature in engine cooling conditions caused not compliance, so that the oil is vaporized, cylinder seals deteriorate, the cylinder pressure decreases, eventually leading to the power difference.
2, brake thermal decay prevention
1, before departure sure to check the brake block
2, do not let the brake block glue oil (oil of corrosive brake shoe) [ 123] 3, to minimize the brakes, use the brakes
4, when thermal decay, try to slow down along the free car, do not accelerate, with the brakes and let the car stopped
5, do not go to the car the cooling water ring (water molecules rubber consumption will increase)