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. 27, 2007
Filed:
Jan. 12, 2006
Puning Wei, Naperville, IL (US);
Zhengbai Liu, Naperville, IL (US);
Puning Wei, Naperville, IL (US);
Zhengbai Liu, Naperville, IL (US);
International Engine Intellectual Property Company, LLC, Warrenville, IL (US);
Abstract
An internal combustion engine () includes a coolant pump () having a pump outlet (), and a first exhaust gas recirculation (EGR) cooler () fluidly connected to the pump outlet (). A crankcase () is fluidly connected in parallel with the EGR cooler () to the pump outlet () for receiving coolant therefrom. A cylinder head () is fluidly connected to the crankcase () for receiving coolant therefrom. A thermostat () is fluidly connected between the cylinder head () and the coolant pump (). A valve system () has a first selectable position fluidly connecting the flow from the first EGR cooler () to the flow in the cylinder head (), and a second selectable position fluidly connecting the flow from the first EGR cooler () to the thermostat () in bypassing relation to the cylinder head (). Each of the first or second position is effected in response to an engine operating parameter.