Injection pump is an important part of the engine.The fuel injection pump assembly is usually composed of fuel injection pump, governor and other parts installed together as a whole.The governor is to ensure the low speed operation of the diesel engine and the limit of the maximum speed, to ensure that the amount of injection and speed maintain a certain relationship between the components.The fuel injection pump is the most important part of the diesel engine, which is regarded as the "heart" part of the diesel enginehttp://www.tractorparts-china.....com/engine-spare-par