METHOD FOR CONTROLLING RPM OF CONSTRUCTION MACHINE ENGINE

摘要

According to the present disclosure, there is provided a method for controlling an RPM of an engine of construction machinery, including and converting and setting the received load factor to a load variation rate; receiving a current load factor of the engine and converting the received current load factor of the engine to a load variation rate; controlling driving of the engine with a corrected RPM, which is obtained by decreasing the RPM of the engine by a predetermined rate from a preset RPM when the current load factor of the engine and the load variation rate according to the current load factor are equal to or smaller than a predetermined rate of the predetermined load factor of the engine and a predetermined rate of the load variation rate for a first time, respectively; and controlling continuously decreasing the corrected RPM to a predetermined rate or smaller, when the current load factor of the engine and the load variation rate according to the current load factor are equal to or smaller than the predetermined rate of the predetermined load factor of the engine and the predetermined rate of the load variation rate for a second time, respectively.

主权项

1. A method for controlling an RPM of an engine of construction machinery, comprising:
controlling an RPM of the engine so that the RPM of the engine corresponds to a set RPM; receiving a load factor of the engine according to the set RPM of the engine, and converting and setting the received load factor to a load variation rate; receiving a current load factor of the engine when an auto idle control function is selected, and converting the received current load factor of the engine to a load variation rate; controlling a driving of the engine with a first corrected RPM, which is obtained by decreasing the RPM of the engine by a predetermined rate from a preset RPM when the current load factor of the engine and the load variation rate according to the current load factor are equal to or smaller than a predetermined rate of the predetermined load factor of the engine and a predetermined rate of the load variation rate for a first time, respectively; and controlling a driving of the engine with a corrected RPM, which is obtained by continuously decreases the corrected RPM to a predetermined rate or smaller, when the current load factor of the engine and the load variation rate according to the current load factor are respectively equal to or smaller than the predetermined rate of the predetermined load factor of the engine and the predetermined rate of the load variation rate for a second time, after the controlling of the first corrected RPM.