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. 29, 2011
Filed:
Feb. 09, 2007
Applicant:
Koichi Hatamura, Yachiyo, JP;
Inventor:
Koichi Hatamura, Yachiyo, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 13/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An average pressure Pin an exhaust port at an overlap period Tduring which a period Tduring which an exhaust valve of a first cylinder unit is in an EGR opening state overlaps with a period Tduring which an intake valve of the first cylinder unit is in an opening state is set to be lower than an average pressure P' in the exhaust port within the EGR opening period Tand after a lapse of the overlap period T, or an overlapped opening time area Sat the overlap period Tis set to be not more than one-fourth of an opening time area Sat the EGR opening period T