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:
Jun. 16, 2015
Filed:
Jul. 05, 2012
Satoshi Kokubo, Nagoya, JP;
Yuji Kakuda, Toyota, JP;
Kenji Ikeda, Nagoya, JP;
Yuuki Ohta, Okazaki, JP;
Masaki Kobayashi, Okazaki, JP;
Satoshi Kokubo, Nagoya, JP;
Yuji Kakuda, Toyota, JP;
Kenji Ikeda, Nagoya, JP;
Yuuki Ohta, Okazaki, JP;
Masaki Kobayashi, Okazaki, JP;
AISIN SEIKI KABUSHIKI KAISHA, Kariya-Shi, Aichi, JP;
Abstract
Provided is a timing adjustment system having improved control for achieving a target rotational phase. The valve timing adjustment system includes a displacement mechanism unit that displaces a rotational phase of a camshaft relative to a crankshaft of an internal combustion engine; a locking mechanism unit that locks the rotational phase at an intermediate locked phase positioned within a displacement range of the rotational phase; a hydraulic pathway that hydraulically drives the displacement mechanism unit and the locking mechanism unit; and a control unit including a control system that controls operations of the hydraulic control valve. The control unit changes a temporal responsiveness of the control system based on a displacement force that displaces the rotational phase.