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. 16, 2013
Filed:
Jul. 08, 2009
Jeremy Harden, Norman, IN (US);
T. Andy Craig, North Vernon, IN (US);
James M. Eickmeyer, Franklin, IN (US);
Amit Ashok Surve, Columbus, IN (US);
Timothy R Evans, Columbus, IN (US);
Kerk B. Mckeon, Columbus, IN (US);
Scott Henry, Columbus, IN (US);
Jeremy Harden, Norman, IN (US);
T. Andy Craig, North Vernon, IN (US);
James M. Eickmeyer, Franklin, IN (US);
Amit Ashok Surve, Columbus, IN (US);
Timothy R Evans, Columbus, IN (US);
Kerk B. McKeon, Columbus, IN (US);
Scott Henry, Columbus, IN (US);
Cummins Inc., Columbus, IN (US);
Abstract
An exhaust gas recirculation system including an exhaust gas passageway which routes a flow of exhaust gas from an exhaust gas source to an intake manifold; an exhaust gas passageway valve which controls flow to the intake manifold; a cooling system coupled with the exhaust gas passageway positioned at a location upstream of the exhaust gas source and downstream of the intake manifold and operable to transfer heat from the flow of exhaust gas to a coolant in flow communication with the cooling system; a bypass passageway coupled with the exhaust gas passageway and bypassing the cooling system; a bypass valve operable to control flow through the bypass passageway; at least one valve operation sensor; and a controller operable to control the bypass valve to direct the flow of exhaust gas to the bypass passageway during exhaust gas recirculation based on a signal from the valve operation sensor.