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. 31, 2011
Filed:
Dec. 19, 2008
Toru Tanaka, Chiyoda-ku, JP;
Shinji Watanabe, Chiyoda-ku, JP;
Tatsuhiko Takahashi, Kobe, JP;
Masayoshi Ito, Chiyoda-ku, JP;
Toru Tanaka, Chiyoda-ku, JP;
Shinji Watanabe, Chiyoda-ku, JP;
Tatsuhiko Takahashi, Kobe, JP;
Masayoshi Ito, Chiyoda-ku, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A control apparatus for an internal combustion engine includes an oil pressure regulating valve having a solenoid, a variable cam phase mechanism for changing a cam phase, and an ECU for controlling the oil pressure regulating valve. The ECU includes an actual cam phase detecting unit, a target cam phase setting unit, a feedback control unit, a coil temperature detecting unit, a circuit resistance calculating unit, and an integral term initial value calculating unit. When an integral term is initialized, the feedback control unit sets the holding output duty as the integral term.