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:
Jul. 05, 2011
Filed:
Sep. 05, 2008
Daniel Joseph Styles, Canton, MI (US);
David Curtis Ives, Canton, MI (US);
Daniel Joseph Styles, Canton, MI (US);
David Curtis Ives, Canton, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
A method to dislodge an adherent residue in an EGR cooler, the EGR cooler installed in an engine. The method comprises switchably flowing the exhaust gas through the exhaust-gas recirculation cooler according to a normal-calibration control mode when a temperature of the coolant is above a threshold temperature, and switchably flowing the exhaust gas through the exhaust-gas recirculation cooler according to an EGR-cooler restoring control mode (with a greater time-averaged flow of the exhaust gas) when the temperature of the coolant is below the threshold temperature.