公开(公告)号：US20220220908A1

公开(公告)日：2022-07-14

申请号：US17595675

申请日：2020-03-27

Applicant: Hitachi Astemo, Ltd.

Inventor： Yoshihiro SUKEGAWA ,  Masayuki SARUWATARI ,  Shinya SATO ,  Yoshiaki NAGASAWA

IPC: F02D35/02 ,  F02D45/00 ,  F02D37/02

Abstract: Provided is an internal combustion engine control unit that controls an engine by detecting combustion characteristics with a simple configuration robust to disturbance such as noise. Therefore, the internal combustion engine control unit (ECU 12) of the present embodiment includes a rotational speed calculation unit 122a that calculates a crank rotational speed of an internal combustion engine (engine 1); an extreme value timing calculation unit 122b that calculates an extreme value timing of the crank rotational speed calculated by the rotational speed calculation unit 122a; and a combustion state estimation unit (combustion phase calculation unit 122c) that estimates a combustion state based on the extreme value timing of the crank speed calculated by the extreme value timing calculation unit 122b.