公开(公告)号：US11053865B2

公开(公告)日：2021-07-06

申请号：US17021101

申请日：2020-09-15

Applicant: IHI Corporation

Inventor： Yutaka Masuda ,  Yoshiyuki Umemoto ,  Takahiro Takimoto ,  Jun Teramoto ,  Kazuki Yotsui ,  Keitoku Iguchi

IPC: F02B75/04 ,  F02D15/02 ,  B63H3/00 ,  F02B61/04

Abstract: A compression ratio control device includes a compression ratio controller configured to control a compression ratio of a combustion chamber so that the maximum combustion pressure approaches a combustion pressure upper limit value (cylinder-internal-pressure upper limit value) based on a detection signal of a detector at least when an engine load is equal to or less than a predetermined load (engine full load).