THROTTLE CONTROL DEVICE AND METHOD FOR EXCAVATOR

摘要

A throttle control device for excavator comprises an engine oil injection pump, a throttle setting part, a controller and a stepping motor. The throttle setting part is connected with the controller, and the stepping motor is mechanically connected with the engine oil injection pump through a transmission structure and electrically connected with the controller. The controller is used for receiving a throttle setting signal sent by the throttle setting part, converting the throttle setting signal into a driving signal for the stepping motor and outputting the driving signal to the stepping motor, and the stepping motor is used for driving the engine oil injection pump to operate by the transmission structure. Also disclosed is a throttle control method for excavator having a stepping motor connected with an engine oil injection pump through a transmission structure, which comprises the following steps: step a: setting an ascending or descending discrete frequency sequence; step b: making the stepping motor change operating frequency according to the frequency sequence, and making the operating frequency of the stepping motor change to the next frequency point after running stably at each frequency point.