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1.冷却系统的功用与类型冷却系统的功用是使内燃机的受热零件(气缸套、气缸盖、活塞及气门等),在适宜的温度状态下工作,以保证工作可靠、耐久和良好的动力与经济指标。发动机工作时,混合气在气缸中的燃烧温度高达1800～2000℃左右。燃烧所产生的热量,有一部分传给与高温气体接触的机件,如气缸套、气缸盖、活塞及气门等。它们由于吸收大量的热而温度升高。如果不进行冷却或冷却不够,将会引起气缸及进气道温度过高,使进入的空气或混合气因受热而膨胀,造成充量减少、功率下降;润滑油粘度降低,影响润滑
1. The function and type of cooling system The function of the cooling system is to make the heated parts (cylinder liner, cylinder head, piston and valve, etc.) of the internal combustion engine work under suitable temperature to ensure the reliable, durable and good power Economic Indicators. Engine work, the mixture in the cylinder combustion temperature up to 1800 ~ 2000 ℃ or so. Part of the heat generated by combustion is transmitted to the parts that come in contact with hot gases such as cylinder liners, cylinder heads, pistons and valves. They rise in temperature due to the absorption of large amounts of heat. If not cooling or cooling is not enough, will cause the cylinder and inlet temperature is too high, so that the incoming air or gas mixture due to heat expansion, resulting in reduced charge, power down; lower viscosity of lubricating oil, affecting lubrication