What types of vehicles are suitable for using hydraulic retarders? Why can using hydraulic retarders increase the safety of trucks?

Heavy commercial vehicles that frequently use the main brake, such as large passenger cars, tractors, trucks, dump trucks and special vehicles, are suitable for hydraulic retarders. For road vehicles, the main routes are in mountainous areas, with many long and steep downhill sections, or vehicles with mandatory requirements for transportation safety and auxiliary braking of vehicles are suitable for installing hydraulic retarders. For dump trucks used in mining areas, due to heavy loads, steep slopes, and great wear on the vehicle's brake system, they are also suitable for assembling hydraulic retarders.

As transport companies and truck drivers gradually increase their requirements for cargo load and timeliness, the engine power of heavy trucks is becoming stronger and stronger. However, this leads to overload of truck service brakes. When friction brakes work for a long time, their temperature can reach 1000℃, which will cause a sharp decline in braking performance or even failure, thus threatening the driving safety of the vehicle. The hydraulic retarder is an auxiliary braking system that can replace 90% of the service brakes, thereby ensuring that the vehicle's brakes are in a cold state during long downhills. When various emergency situations occur on the road, the main and auxiliary braking systems can work together to achieve the maximum braking effect.