Engine control unit for construction machinery

An engine control apparatus for construction machinery, comprising:

• an engine control dial manually operable by a user and configured to generate a control signal for increasing and decreasing revolutions per minute (rpm) of an engine of construction machinery by a predetermined unit;
• a jog shuttle including a jog switch, which is manually rotatable and pressable by a user, and configured to generate a selection signal for selecting or changing functions corresponding to various operation modes of the construction machinery;
• an instrument panel configured to display operation information of various elements which is viewable to a user while driving the construction machinery;
• an engine controller configured to control the engine to respond to the control signal generated by the engine control dial;
• and
• an equipment controller configured to:
• receive the control signal generated by the engine control dial or a control signal corresponding to a rotation and a press of the jog switch;
• and
• provide the engine controller with a value of an rpm of the engine corresponding to the received control signal among values of the rpms of the engine corresponding to the respective control signals,
• wherein the instrument panel provides an engine rpm adjustment screen image through use of the jog shuttle,
• wherein the jog switch outputs a rotation operation signal corresponding to a rotation angle of a manual rotation by the user and a selection operation signal corresponding to a manual press by the user on the instrument panel, and
• wherein when the engine rpm adjustment screen image is called, the instrument panel increases or decreases the value of the rpm of the engine displayed on the engine rpm adjustment screen image in response to the rotation operation signal, and then outputs a value of an rpm of the engine selected by the manual rotation to the equipment controller by the input of the selection operation signal.