公开(公告)号：US10968838B2

公开(公告)日：2021-04-06

申请号：US16616392

申请日：2018-03-26

申请人： Yanmar Co., Ltd.

发明人： Ryosuke Shimomura ,  Ryota Iwano ,  Tomoaki Morita

IPC分类号： F02D41/02 ,  F02D45/00 ,  F02D1/04 ,  F02D41/30

摘要： An engine speed control device performing: a first PID gain calculation step of calculating a target engine speed to thereby calculate a first PID gain based on an engine speed deviation between the target engine speed and an engine speed; a target rack position calculation step of correcting the first PID gain based on a cooling water temperature to thereby calculate a target rack position of a fuel injection pump; a second PID gain calculation step of calculating a second PID gain based on a rack position deviation between the target rack position and a rack position; and a rack control signal producing step of correcting the second PID gain based on a lubricating oil temperature to thereby produce a rack control signal. The engine speed control device thus controls an engine speed by controlling the rack position based on the rack control signal.