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Working Principle of Diesel Generating Set Injection Pump

The injection pump is called the "heart" of the diesel generator set, which shows the importance of the fuel injection pump of the diesel generator unit. It is the most important component of the diesel fuel supply system. Its function is to increase the pressure of the diesel generator set and to supply fuel to the fuel chamber on a regular and quantitative basis according to the requirements of the working process of the diesel generator set. The main structure of the 4, 6, and 12-cylinder fuel injection pump is basically the same (as shown in FIGS. 1 and 2) except the number of cylinders, and is a multi-cylinder composite type. It is composed of the fuel injection pump body, the sub-pump, the transmission mechanism and the oil quantity control mechanism. Each pump mainly consists of oil supply valve tight seat, oil supply valve spring, oil supply valve couple, plunger coupling, spring upper seat, spring lower seat, plunger spring, oil quantity control sleeve, ad...