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. 18, 2002
Filed:
Feb. 26, 2001
Keiji Yoeda, Numazu, JP;
Kiyoshi Nakanishi, Susono, JP;
Yoshihiro Iwashita, Suntou, JP;
Kazuhiko Shiratani, Susono, JP;
Shouji Katsumata, Gotemba, JP;
Makoto Ogiso, Susono, JP;
Hideyuki Nishida, Susono, JP;
Tomomi Yamada, Susono, JP;
Isao Matsumoto, Susono, JP;
Masaaki Tanaka, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
An internal combustion engine includes two intake side solenoid driving valve mechanisms for opening and closing intake valves by cooperation of an electromagnetic coil and a spring, and/or two exhaust side solenoid driving valve mechanisms for opening and closing exhaust valves provided on each cylinder. A controller commands a driving circuit to cause the valve-opening timing of the exhaust valves or the intake valves to be different.