Method for setting target rotational speed of drive engine of hydrostatic drive system of e.g. forklift, involves specifying target rotational speed of prime mover in response to power requirement value

摘要

The method involves converting actual driving rotational speed (nD-ist) to an actual output speed (nA-ist) by hydrostatic power unit. The target rotational speed of prime mover (2) is specified in response to power requirement value, where base portion of target rotational speed is not dependent on power requirement value and the rise portion of target rotational speed is dependent on the power requirement value.