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:
Sep. 10, 2019
Filed:
Dec. 02, 2017
Denso Corporation, Kariya-shi, Aichi, JP;
Yamaha Hatsudoki Kabushiki Kaisha, Iwata-shi, Shizuoka, JP;
Minoru Hotta, Kariya, JP;
Yoshihiko Nonogaki, Kariya, JP;
Kazuteru Iwamoto, Iwata, JP;
Makoto Wakimura, Iwata, JP;
Naoki Nagata, Kariya, JP;
DENSO CORPORATION, Kariya-shi, Aichi, JP;
YAMAHA HATSUDOKI KABUSHIKI KAISHA, Iwata-shi, Shizuoka, JP;
Abstract
A control device for a rotating element rotated by a four-stroke engine has a high degree of freedom in the choice of an apparatus to which the control device is applicable. The control device includes a rotation speed acquisition unit configured to obtain a rotation speed of the rotating element rotated by the four-stroke engine, and an undulation detection unit configured to, based on the rotation speed obtained by the rotation speed acquisition unit, detect a periodic undulation contained in a rotation fluctuation of the four-stroke engine, the periodic undulation having an angular period longer than a crank angle corresponding to four strokes.