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正在运转的柴油机,如果转速突然升高,即使减小或关闭油门也不能使转速降下来,这就叫“飞车”。出现这种危险的故障时,如果措施失误,不能迅速制止“飞车”,柴油机转速会越来越高,伴随着机身的剧烈振动和呼啸的轰鸣声,随时都会引发破坏机体、伤害人身的大事故。 1.产生“飞车”的原因 （1）过量柴油进入缸内燃烧 若排气管冒黑烟,则“飞车”是因过量柴油进入气缸燃烧而引起的,产生的主要原因是: ①出油阀装配过紧引起柱塞套变形,或柱塞有伤疤,将柱塞卡住在最大供油位置。
Running diesel engine, if the speed suddenly increased, even if the reduction or shut down the throttle can not make the speed down, this is called “speed.” The emergence of such a dangerous fault, if the measures are wrong, can not quickly stop the “speed”, the diesel engine speed will be higher and higher, with the violent vibration of the fuselage and the roar of the roar, will cause damage to the body at any time, hurt the body ACCIDENT. 1. Causes of “Speed” (1) excessive diesel into the cylinder combustion If the exhaust pipe black smoke, the “speed” is due to excessive combustion of diesel into the cylinder caused by the main reasons are: ① out of the valve Assembly too tight cause the plunger sleeve deformation, or plunger scars, the plunger stuck in the maximum fuel supply position.