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. 08, 1997
Filed:
Mar. 31, 1995
Todd A Sheridan, Franklin, IN (US);
A S Ghuman, Columbus, IN (US);
Angie R May, Columbus, IN (US);
Rod Radovanovic, Columbus, IN (US);
John M Janssen, Columbus, IN (US);
Peter V Woon, Columbus, IN (US);
Cummins Engine Company, Inc., Columbus, IN (US);
Abstract
EGR induction supercharged or turbocharged internal combustion engine having EGR and EGR cooling in which EGR cooling is obtained through jacket water coolers and/or an air-to-air aftercooler. EGR induction is obtained via either low pressure (ambient) induction to the system intake, or via venturi or passive pump induction into the pressurized intake. Bypassing of the EGR cooler is used to reduce condensation and fouling in the EGR cooler and to provide warmer air to reduce light load and cold ambient hydrocarbon production. A passive or catalyzed particulate trap and crankshaft driven supercharger boosting system are provided to address engine response deterioration and particulate increase problems associated with EGR.