What is primarily produced in the hydraulic system when the engine is idling?

When the engine is idling, the hydraulic system primarily produces low power and low speed. This is due to the fact that at idle, the engine RPM (revolutions per minute) is lower, resulting in reduced hydraulic flow and pressure. The hydraulic pump, which is driven by the engine, is not generating enough force to produce the high power required for lifting heavy loads or performing rapid movements. As a result, while the hydraulic system can still operate, it does so with limited capacity, leading to lower power and slower movement of the equipment.

In this state, the operating efficiency is greatly diminished compared to when the engine is running at higher RPMs, where the system could achieve greater flow rates and increased power output. Understanding this concept is crucial for heavy equipment operators, as idling for extended periods, while it may conserve fuel, limits the hydraulic capabilities and can lead to inefficient operations.