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:
Nov. 22, 2005
Filed:
Jul. 27, 2004
Toshiaki Harunari, Yashio, JP;
Koichiro Yomogida, Fujisawa, JP;
Nobutaka Ishii, Fujisawa, JP;
Kazuya Tomikawa, Fujisawa, JP;
Futoshi Nakano, Fujisawa, JP;
Toshiaki Harunari, Yashio, JP;
Koichiro Yomogida, Fujisawa, JP;
Nobutaka Ishii, Fujisawa, JP;
Kazuya Tomikawa, Fujisawa, JP;
Futoshi Nakano, Fujisawa, JP;
Isuzu Motors Limited, Tokyo, JP;
Abstract
An EGR control apparatus for a diesel engine which can stop EGR in advance of increase of a fuel injection quantity when acceleration of the engine comprises: EGR means () to adjust an EGR volume which is recirculated from an exhaust pipe () to an intake pipe (); filter means () to carry out a smoothening-process to an accelerator opening degree detected by an accelerator opening degree sensor; injection quantity determination means () to determine a target fuel injection quantity to be injected from an injector (), using the accelerator opening degree after smoothening-processed; and control means () to calculate a fuel injection quantity for judging EGR stop (Qcut), using the accelerator opening degree before smoothening-processed, to allow the EGR means () to carry out a decrease control for the EGR volume when the fuel injection quantity for judging EGR stop (Qcut) exceeds a predetermined threshold value (Hi).