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, 2012
Filed:
Jan. 05, 2010
Christopher E. Whitney, Highland, MI (US);
Gregory J. York, Fenton, MI (US);
Jeffrey M. Kaiser, Highland, MI (US);
Katie C. Bonasse, Linden, MI (US);
Christopher E. Whitney, Highland, MI (US);
Gregory J. York, Fenton, MI (US);
Jeffrey M. Kaiser, Highland, MI (US);
Katie C. Bonasse, Linden, MI (US);
Abstract
A control system includes a throttle control module, an exhaust gas recirculation (EGR) control module, and a diagnostic control module. The throttle control module selectively maintains a desired throttle area when a vehicle is in a coastdown mode. The EGR control module opens an EGR valve when the desired throttle area is maintained. The diagnostic control module selectively diagnoses an error of an EGR system based on a pressure increase measured in an intake manifold of the vehicle when the EGR valve is open.