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US Patent 7665297 Exhaust purifying apparatus for internal combustion engine

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Patent abstractTimelineTable: Further ResourcesReferences
Is a
Patent
Patent

Patent attributes

Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
7665297
Patent Inventor Names
Yoshiyuki Takahashi2
Yuzuru Ikeda2
Hisanobu Suzuki2
Shinichi Kusakabe2
Tadashi Toyota2
Yoshitaka Nakamura2
Date of Patent
February 23, 2010
Patent Application Number
10558681
Date Filed
March 14, 2005
Patent Citations Received
‌
US Patent 11867111 Valve arrangement for split-flow close-coupled catalyst
1
Patent Primary Examiner
‌
Binh Q Tran
Patent 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 G1, G2 of 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 G1, G2 is decreased.

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