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:
Nov. 01, 2011
Filed:
Mar. 22, 2007
Zenichiro Mashiki, Nisshin, JP;
Yasumichi Inoue, Toyota, JP;
Noboru Takagi, Toyota, JP;
Haruyuki Urushihata, Chiryu, JP;
Zenichiro Mashiki, Nisshin, JP;
Yasumichi Inoue, Toyota, JP;
Noboru Takagi, Toyota, JP;
Haruyuki Urushihata, Chiryu, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-Ken, JP;
Abstract
An ECU executes a program including the steps of: controlling, when the phase of an intake valve is a phase advanced relative to a threshold value CA (FF) (NO in S), an electric motor operating an intake VVT mechanism by feedback control (S); and controlling, when the phase of the intake valve is a phase retarded relative to the threshold value CA (FF) (YES in S), the electric motor by feed-forward control (S). Under the feed-forward control, a duty command value is output that is smaller than an upper limit of a duty command value under the feedback control.