不断改进柴油机排气污染和燃料经济性的一个共同结果就是提高了排气温度。前几年,排气温度在稳定工况下一般不超过1000°F(538℃)。现在的柴油机排气温度高达1300°F(705℃),工程师面临着要解决表面接触温度太高的问题。最近,已有用隔热套装在各种式样的排气管上,以便达到下列各项要求:减低发动机室的 A common result of continuous improvements in diesel engine exhaust pollution and fuel economy is increased exhaust gas temperatures. In previous years, exhaust temperatures generally did not exceed 1000 ° F (538 ° C) at steady state conditions. Today’s diesel exhaust temperatures are as high as 1300 ° F (705 ° C) and engineers are faced with the problem of overcoming surface contact temperatures too high. Recently, there have been thermal insulation kits on various types of exhaust pipes in order to achieve the following requirements: Reduce the engine room