The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 26, 2021
Filed:
Jan. 04, 2019
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Taiho Kogyo Co., Ltd., Toyota, JP;
Yusuke Morita, Mishima, JP;
Motoichi Murakami, Gotemba, JP;
Takeshi Fukui, Toyota, JP;
Yuichiro Kajiki, Toyota, JP;
Katsuhiro Ashihara, Toyota, JP;
Alan Hase, Ageo, JP;
Takashi Izumi, Nagakute, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
TAIHO KOGYO CO., Ltd., Toyota, JP;
Abstract
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.