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. 10, 2023
Filed:
Apr. 07, 2022
Aisin Corporation, Kariya, JP;
Mazda Motor Corporation, Hiroshima, JP;
Kenya Fujimoto, Kariya, JP;
Yoshinari Tokunaga, Kariya, JP;
Shigehiro Tanabe, Kariya, JP;
Takano Nakai, Hiroshima, JP;
Yoshiyuki Kamoyama, Hiroshima, JP;
Hiroshi Takahashi, Hiroshima, JP;
Toru Hirota, Hiroshima, JP;
AISIN CORPORATION, Kariya, JP;
MAZDA MOTOR CORPORATION, Hiroshima, JP;
Abstract
The valve timing control unit includes a valve timing control mechanism that includes a driving rotary body, a driven rotary body, an electric motor and a deceleration gear each for setting the relative rotational phase of the driving rotary body and the driven rotary body, and a phase sensor unit that detects the actual phase of the driving rotary body and the driven rotary body. The valve timing control unit includes a controller that controls the electric motor to reduce a phase difference between the actual phase and a target phase, and the controller includes a swing controller that swings the target phase in vicinity of the target phase when the target phase is maintained and the actual phase having a fluctuation amount is held in a holding region, in which the fluctuation amount is less than a preset value.