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:
Sep. 18, 2012
Filed:
Aug. 25, 2009
Applicants:
David M. Hsia, Bartlett, IL (US);
Rogelio Rodriguez, Plainfield, IL (US);
Chethana Bhasham, Lisle, IL (US);
Inventors:
David M. Hsia, Bartlett, IL (US);
Rogelio Rodriguez, Plainfield, IL (US);
Chethana Bhasham, Lisle, IL (US);
Assignee:
International Engine Intellectual Property Company, LLC, Lisle, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02M 25/06 (2006.01); F02B 47/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
An EGR control method to prevent condensation within the EGR system uses a temperature sensor signal from an EGR cooler exhaust gas outlet to model or estimate exhaust manifold gas temperature upstream of the cooler. If the estimated exhaust manifold gas temperature falls below a predetermined level, the engine control system closes or partially closes the EGR control valve to stop EGR flow through the cooler and the EGR valve.