Toyota Jidosha Kabushiki Kaisha

Taiho Kogyo Co., Ltd.

Alan Hase

Motoichi Murakami

Yuichiro Kajiki

Katsuhiro Ashihara

Yusuke Morita

Takeshi Fukui

Takashi Izumi

A control device controls an internal combustion engine including: an elastic wave sensor arranged and configured to output a signal responsive to the strength of an acoustic emission wave produced at a sliding portion; and a variable oil pump. The control device is configured to execute an oil pressure control such that the oil pressure approaches a target oil pressure according to an engine operating condition. This oil pressure control includes a first pressure-increase processing executed where an AE correlation value correlated with the strength or occurrence frequency of the acoustic emission wave detected by the elastic wave sensor is greater than a first threshold value. The first pressure-increase processing increases the target oil pressure associated with a first engine operating condition present when the AE correlation value becomes greater than the first threshold value, as compared to when the AE correlation value is not greater than that.

Control device for internal combustion engine

Growing community of inventors

Ageo, Japan

Alan Hase