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:
Aug. 04, 2009
Filed:
Dec. 08, 2004
Yasushi Kusaka, Susono, JP;
Toshiaki Asada, Mishima, JP;
Shuichi Ezaki, Susono, JP;
Kimitoshi Tsuji, Susono, JP;
Yasushi Kusaka, Susono, JP;
Toshiaki Asada, Mishima, JP;
Shuichi Ezaki, Susono, JP;
Kimitoshi Tsuji, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
There is provided a valve gear of an internal combustion engine converting a rotational motion of a motor into a linear motion by a cam, and driving an intake valve or an exhaust valve of a cylinder so as to be opened and closed based on the linear motion, a motor control apparatus which can actuate the motor in a rocking chive mode in which a rotating direction of the cam is changed during a lift of the valve. The motor control apparatus controls a motion of the motor such that the cam starts rotating before the valve starts lifting in the rocking drive mode.