Shaft;Injection Pump Drive

The main function of the fuel injection pump drive in an excavator is to provide constant pressure fuel supply and timed fuel supply. The fuel injection pump is an important component of the excavator’s diesel engine, and its assembly typically consists of the fuel injection pump and components such as the governor. The governor ensures the low-speed operation of the diesel engine and limits the maximum speed, maintaining a certain relationship between injection quantity and speed. The fuel injection pump is regarded as the “heart” of the diesel engine, and any issues with it can lead to the malfunction of the entire diesel engine. Its main functions include:

1. Constant pressure fuel supply: The fuel injection pump raises the low-pressure oil supplied by the fuel pump to a certain pressure, and then delivers it to the injectors through high-pressure oil pipes to achieve good diesel atomization. This is one of the key steps to ensure the normal operation of the diesel engine.

2. Timed fuel supply: The fuel injection pump must ensure that fuel is supplied at the specified time and continuously. This helps control the combustion process, ensuring stable operation and optimized performance of the engine.

Through these functions, the fuel injection pump drive plays a crucial role in diesel machinery such as excavators, directly affecting the performance and efficiency of the engine.