Coolant temperature controlling system for engine performance test

摘要

A coolant temperature controlling system for engine performance test is disclosed, the system includes coolant internal circulatory system, heat exchanging device, temperature monitoring and controlling device, and coolant external circulatory system. The said coolant internal circulatory system and the said coolant external circulatory system are connected with the heat exchanging device respectively. The said coolant internal circulatory system is connected with the engine. The said temperature monitoring and controlling device is connected with the said coolant internal circulatory system, the said heat exchanging device, and the said coolant external circulatory system separately. The said coolant internal circulatory system is an enclosed type internal circulatory system. A bubble eliminating pipe connects the water duct in the engine cylinder head with an expansion water tank, a by-pass pipe and a by-pass valve are installed on the outlet of the engine.