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:
Apr. 01, 2003
Filed:
Apr. 02, 2001
Hideyuki Nishida, Susono, JP;
Isao Matsumoto, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
An internal combustion engine and method are capable of reducing a power consumption required to open an exhaust-side electromagnetic valve at a predetermined time. This internal combustion engine includes an electromagnetic valve drive mechanism that controls an exhaust valve of the internal combustion engine to open and close by using electromagnetic force generated in response to application of a magnetizing current, and a controller that controls the electromagnetic valve drive mechanism. The controller changes, under predetermined conditions, an open timing of the exhaust valve so as to reduce the power consumption of the electromagnetic valve drive mechanism.