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:
Dec. 13, 1994
Filed:
Apr. 21, 1993
Yukio Ohtaka, Susono, JP;
Kazuhiro Sakurai, Gotenba, JP;
Yutaka Obuchi, Susono, JP;
Shigetaka Tanaka, Susono, JP;
Takashi Mori, Toyohashi, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Nippondenso Co. Ltd., Kariya, JP;
Abstract
An engine including at least two digital computers wherein controlled systems each including a switching unit, an ignitor, and a spark plug are independently provided for each cylinder, and controlled systems each including a switching unit, a drive circuit, and a fuel injector are independently provided for each cylinder. The controlled systems are normally controlled by one of the digital computers, but when one of the digital computers malfunctions, the controlled systems are controlled by the other digital computer.