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:
Apr. 19, 2005
Filed:
Aug. 23, 2004
Applicant:
Tomomi Oshima, Kariya, JP;
Inventor:
Tomomi Oshima, Kariya, JP;
Assignee:
Denso Corporation, Kariya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02M025/07 ;
U.S. Cl.
CPC ...
Abstract
In the control unit of internal combustion engine, in which the exhaust gas recirculation (EGR) quantity to an intake pipe is adjusted by the EGR valve, an EGR regulator controls an opening degree of the EGR valve according to the fuel injection value. And the EGR regulator decreases the opening degree of the EGR valve quickly to the minimum when the increase of the fuel injection valve in a unit time exceeds a criterial value. Further, an EGR buffer prevents the EGR regulator from quick-decreasing the opening degree of the EGR valve when the fuel injection value is wiggling by the operation of the cruise controller.