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:
May. 13, 2025
Filed:
Jun. 05, 2024
Nissan Motor Co., Ltd., Yokohama, JP;
Sho Takahashi, Kanagawa, JP;
Shuji Kojima, Kanagawa, JP;
NISSAN MOTOR CO., LTD., Yokohama, JP;
Abstract
When vibration sensed by knock sensor configured to sense the vibration of a multiple cylinder internal combustion engine is greater than a predetermined knock threshold value, a controller performs a first ignition timing control to retard ignition timings of cylinders so that the vibration becomes equal to or smaller than the knock threshold value; previously specifies a specific cylinder relating to a specific vibration due to a bending of a crank shaft; and in a state in which a driving state is in a predetermined specific driving region where there is a possibility that the specific vibration will be generated, when the vibration of the specific cylinder is greater than a predetermined specific vibration judgment threshold value that is smaller than the knock threshold value, performs a second ignition timing control to retard only the ignition timing of the specific cylinder by a predetermined amount.