Method for controlling engine for driving hydraulic pump to operate hydraulic actuator for construction equipment

摘要

In a method for controlling an engine for driving a hydraulic pump to supply a pressurized fluid to at least one hydraulic actuator in a construction machinery, a fuel flow supplied to the engine is decreased so that an output rotational speed of the engine is decreased to decrease an excess output of the engine, and the fuel flow is increased to increase the output rotational speed of the engine when a load of the engine for driving the hydraulic pump is more than a first level after the engine output decreasing step.