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:
Oct. 21, 2008
Filed:
May. 22, 2007
Minoru Onobayashi, Tokai, JP;
Hirokazu Konohara, Inazawa, JP;
Nobuhiro Ogasawara, Nagoya, JP;
Kunihiko Sato, Okazaki, JP;
Minoru Onobayashi, Tokai, JP;
Hirokazu Konohara, Inazawa, JP;
Nobuhiro Ogasawara, Nagoya, JP;
Kunihiko Sato, Okazaki, JP;
Aisan Kogyo Kabushiki Kaisha, Obu, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
An object is to prevent deterioration in both exhaust emission and fuel efficiency by suitably combining OTP boosting with power boosting. An electronic control unit (ECU)of the present invention is arranged to control a fuel injection amount of an injectorto an engineaccording to an operating condition of the engine, and perform OTP boosting of the fuel injection amount to prevent overheating of a discharge passageand a catalyst converterwhen the enginecomes into a high load and high rotation operating condition and perform power boosting that increases the fuel injection amount to enrich an air-fuel ratio to an output air-fuel ratio when the enginecomes into a high load operating condition. The ECUexecutes the power boosting when the enginecomes into the high load and high rotation operating condition and executes the OTP boosting later from the start of the power boosting, delayed by a period attributable to at least an increased amount of fuel by the power boosting.