The main function of automobile return hose is to allow the expansion and contraction of coolant during engine cooling. When the engine is running, the coolant will be pumped into the engine for cooling, and at the same time, it will also produce certain thermal expansion. The existence of the return hose can accommodate the expansion of the coolant to maintain the normal working pressure of the cooling system.
In addition, the return hose can also help the cooling system to realize the circulation of coolant. After the coolant absorbs heat in the engine, it flows back to the coolant reflux device through the reflux hose, then dissipates heat through the radiator, and then circulates to the engine again for cooling.
Generally speaking, the automobile return hose plays a role in balancing the expansion and contraction of coolant in the cooling system, maintaining the normal working pressure of the cooling system and promoting the circulation of coolant to ensure the normal cooling and operation of the engine.
