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:
Feb. 23, 2010
Filed:
Mar. 14, 2005
Hisanobu Suzuki, Toyota, JP;
Yoshitaka Nakamura, Nagoya, JP;
Yoshiyuki Takahashi, Kariya, JP;
Yuzuru Ikeda, Kariya, JP;
Shinichi Kusakabe, Kariya, JP;
Tadashi Toyota, Kariya, JP;
Hisanobu Suzuki, Toyota, JP;
Yoshitaka Nakamura, Nagoya, JP;
Yoshiyuki Takahashi, Kariya, JP;
Yuzuru Ikeda, Kariya, JP;
Shinichi Kusakabe, Kariya, JP;
Tadashi Toyota, Kariya, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Kabushiki Kaisha Toyota Jidoshokki, Kariya-shi, JP;
Abstract
An internal combustion engine has a separate exhaust passage for each one of banks. An exhaust purifying catalyst is provided in each exhaust passage. The mass flow rates G, Gof exhaust gas that flow through the exhaust passages are individually estimated. The flow rate of exhaust gas is individually adjusted per each bank by controlling the operation of each one of exhaust gas recirculation valves such that the difference between the estimated mass flow rates G, Gis decreased.