在低温时，散热器的出口完全被堵住-所有的冷却液在发动机内来回流动。

At low temperatures, the outlet to the radiator is completely blocked-all of the coolant is recirculated back through the engine.

youdao

机组装有进气预热器，可选装燃油加热器和冷却液加热器等冷启动装置，解决机组在低温、高海拔地区的发动机起动难问题。

With cold starting devices, such as inlet pre-heater, optional fuel heater and coolant heater, the unit has solved the difficult starting problem under low temperature and high altitude areas.

youdao

机组装有进气预热器，可选装燃油加热器和冷却液加热器等冷启动装置，解决机组在低温、高海拔地区的发动机起动难问题。

With cold starting devices, such as inlet pre-heater, optional fuel heater and coolant heater, the unit has solved the difficult starting problem under low temperature and high altitude areas.

youdao