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. 02, 2009
Filed:
Jul. 14, 2006
Yuji Narita, Kariya, JP;
Yoshiyuki Takahashi, Kariya, JP;
Kenji Kawai, Kariya, JP;
Hisanobu Suzuki, Toyota, JP;
Yoshitaka Nakamura, Nagoya, JP;
Yuji Narita, Kariya, JP;
Yoshiyuki Takahashi, Kariya, JP;
Kenji Kawai, Kariya, JP;
Hisanobu Suzuki, Toyota, JP;
Yoshitaka Nakamura, Nagoya, JP;
Kabushiki Kaisha Toyotal Jidoshokki, Kariya-shi, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
Cylinder heads are each provided with a fuel injection valve, and an addition nozzle for adding fuel for activating an exhaust purifying catalyst to an exhaust manifold. There exists a non-exhaust period in which an exhaust gas does not flow out to exhaust passages from the exhaust manifolds during an operation of an engine. An ECU controls the addition nozzles in such a manner that the addition nozzles execute a fuel addition during periods except the non-exhaust period. Accordingly, the fuel added to the exhaust manifolds for activating the catalysts is avoided from collecting on a wall surface of an exhaust system without getting on an exhaust stream.