Injection Pump Ass’y

The main function of the fuel injection pump assembly in an excavator engine is to provide fuel and maintain stable oil pressure.

The fuel injection pump is a key component in the excavator engine, and its main functions include:

– Constant pressure fuel supply: The fuel injection pump raises the low-pressure fuel from the transfer pump to a certain pressure, then delivers it to the fuel injectors through high-pressure fuel lines to ensure proper atomization of diesel fuel. This is crucial for combustion efficiency and engine performance.

– Timed fuel supply: The fuel injection pump ensures that fuel is supplied at the specified time and continues to be supplied. For multi-cylinder engines, the injection advance angle and duration should be equal for each cylinder to ensure smooth engine operation.

– Rapid and reliable fuel supply: The fuel injection pump ensures quick and reliable start and stop of fuel supply, preventing post-injection dripping or abnormal injection, thereby improving engine efficiency and reliability.

– Metered fuel supply: According to the load of the diesel engine, the fuel injection pump provides the appropriate amount of diesel fuel to ensure equal fuel supply to each cylinder, thereby maintaining performance and efficiency of the engine under various operating conditions.

The fuel injection pump assembly typically consists of the fuel injection pump and a speed regulator, among other components. These components work together to ensure that the engine operates stably and efficiently under different working conditions.