公开(公告)号：US20200291874A1

公开(公告)日：2020-09-17

申请号：US16891969

申请日：2020-06-03

申请人： IHI CORPORATION

发明人： Yutaka MASUDA ,  Yoshiyuki UMEMOTO ,  Ryoichi KANEHIRA

IPC分类号： F02D15/04 ,  F02F1/00 ,  F02F3/00 ,  F02B75/04 ,  B60Q9/00 ,  F02D35/02

摘要： Provided is an engine, including: a cylinder including a cylinder liner; a piston provided inside the cylinder liner; a piston ring provided on the piston; a contact detector configured to detect a contact between a step formed in an inner peripheral surface of the cylinder liner and the piston ring; and a compression ratio controller configured to control a top dead center position of the piston so that the piston ring at the top dead center position is located on a combustion chamber side with respect to the step when the contact is detected.