有些车手认为:发动机的工作温度低一点没关系,比温度高要好。事实则不然。发动机工作时,由于燃料的燃烧和运动件的摩擦产生大量的热量,特别是直接与燃烧气体接触的部件温度更高,约200至400℃,因此不管负荷大小、转速高低和周围大气温度环境如何,既要采用某种冷却的方法,把发动机的热量消耗散去,又要确保发动机在一定热规范内进行工作,才能保证发动机有较大的功率和经济性。 Some drivers think: the engine temperature is a little lower, better than the temperature is good. The truth is not. When the engine is working, a lot of heat is generated due to the combustion of the fuel and the friction of the moving parts. Especially, the parts directly contacting with the combustion gas are at a temperature of about 200 to 400 ° C. Therefore, regardless of the load, the rotational speed and the surrounding atmospheric temperature environment , It is necessary to adopt a cooling method to dissipate the heat consumption of the engine, but also to ensure that the engine work within a certain thermal specifications, to ensure that the engine has greater power and economy.