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:
Oct. 27, 2020
Filed:
May. 01, 2017
Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;
Hiroaki Hoshikawa, Kanagawa, JP;
Kakuzou Kaneko, Kanagawa, JP;
Yukinaga Moriguchi, Kanagawa, JP;
Kazuo Muraki, Kanagawa, JP;
NISSAN MOTOR CO., LTD., Yokohama-shi, JP;
Abstract
A control method and a control device are provided for an internal combustion engine structured to vary a mechanical compression ratio by varying a range of slide of a piston with respect to a cylinder bore. A control process includes: acquiring a temperature correlating with a cylinder bore wall temperature; fixing the mechanical compression ratio to a preset compression ratio point, in response to a condition that the acquired temperature is lower than a preset temperature point; and setting the preset temperature point higher than a point corresponding to a point of the cylinder bore wall temperature at which condensed water occurs in the cylinder bore.