What is the main function of the engine-driven hydraulic pump in an auxiliary diesel engine hydraulic starting system?

The main function of the engine-driven hydraulic pump in an auxiliary diesel engine hydraulic starting system is to restore hydraulic pressure in the accumulator after starting. This process is crucial because the hydraulic starting system relies on stored hydraulic fluid in the accumulator, which provides the necessary pressure to crank the engine. Once the engine has started, the hydraulic pump actively replenishes the accumulator to ensure that there is a sufficient supply of hydraulic pressure ready for future starting cycles.

This function is essential for the reliability and efficiency of the starting system, as it ensures that the accumulator can effectively deliver the high volume of hydraulic fluid required for the starting motor to operate effectively each time the engine is engaged. Maintaining adequate pressure and volume in the accumulator contributes to the overall performance and longevity of the starting system, facilitating smoother engine startups during operation.