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:
May. 17, 2011
Filed:
Jul. 11, 2005
Stephen Geyer, State Line, PA (US);
Robert Gorman, Chambersburg, PA (US);
Gregory J. Birky, Boonsboro, MD (US);
Stephen Geyer, State Line, PA (US);
Robert Gorman, Chambersburg, PA (US);
Gregory J. Birky, Boonsboro, MD (US);
Mack Trucks, Inc., Greensboro, NC (US);
Abstract
In a method of maintaining temperature of engine exhaust gas from cylinders of a multi-cylinder engine () with a desired range, exhaust gas from a first group of cylinders () including at least one cylinder is routed to at least one of an EGR system () and an exhaust system (). Exhaust gas from a second group of cylinders () including at least one of the cylinders is routed to the exhaust system (). Routing of the exhaust gas from the first group of cylinders between the EGR system and the exhaust system is controlled to maintain a temperature of engine exhaust gas within a desired range. An engine (), a control system (), and a controller (), as well as an exhaust gas mixture, are also disclosed.