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:
Aug. 05, 2008
Filed:
Jun. 02, 2005
Nobuhiro Kondo, Tokyo, JP;
Yoshinaka Takeda, Tokyo, JP;
Yasuhiro Tsutsui, Tokyo, JP;
Yoshinori Takahashi, Tokyo, JP;
Minehiro Murata, Tokyo, JP;
Nobuhiro Kondo, Tokyo, JP;
Yoshinaka Takeda, Tokyo, JP;
Yasuhiro Tsutsui, Tokyo, JP;
Yoshinori Takahashi, Tokyo, JP;
Minehiro Murata, Tokyo, JP;
Mitsubishi Fuso and Bus Corporation, Tokyo, JP;
Abstract
An engine control system includes an EGR devicewhich connects an exhaust passage Ex and an intake passage I and has an EGR valve; an intake throttle valveplaced in the intake passage I; and an engine control unit which is provided with an engine operation data calculator Aaccumulating mileages of a vehicle or an engine operation period, a fuel injection controller Acontrolling a fuel injection amount and a fuel injection timing, an EGR controller Acontrolling an opening of the EGR valve; a throttle valve controller Acontrolling an opening of the intake throttle valve; and an EGR passage cleaning controller Awhich delays a fuel injection timing Tn, increases an opening β g of the EGR valve, and reduces an opening θ s of the intake throttle valve when the total mileage or the total operation period calculated by the engine operation data calculator becomes equal to a predetermined threshold.