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. 15, 2005
Filed:
Aug. 08, 2003
John M. Janssen, Columbus, IN (US);
Bruce A. Watson, Columbus, IN (US);
Charles R. Schenk, Ypsilanti, MI (US);
Josh S. Shao, Columbus, IN (US);
Lester L. Peters, Columbus, IN (US);
David L. Buchanan, Westport, IN (US);
Wayne A. Eckerle, Columbus, IN (US);
Julius P. Perr, Columbus, IN (US);
John M. Janssen, Columbus, IN (US);
Bruce A. Watson, Columbus, IN (US);
Charles R. Schenk, Ypsilanti, MI (US);
Josh S. Shao, Columbus, IN (US);
Lester L. Peters, Columbus, IN (US);
David L. Buchanan, Westport, IN (US);
Wayne A. Eckerle, Columbus, IN (US);
Julius P. Perr, Columbus, IN (US);
Cummins, Inc., Columbus, IN (US);
Abstract
A preferred embodiment EGR valve permits exhaust gas to be induced into the intake line downstream of the compressor, while minimizing the need to reduce the size of the turbocharger. The preferred embodiment EGR valve exploits variations around the mean pressure in the EGR passage created by the engine cycle by selectively opening when the pressure in the EGR valve exceeds the pressure in the intake line. Thus, exhaust gas is recirculated even when the engine is running near torque peak. The preferred embodiment EGR valve also exploits the higher mean pressure in the exhaust line relative to the intake line at higher engine speeds by remaining open, in order to minimize the energy consumed in opening and closing the EGR valve.