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:
Mar. 17, 2015
Filed:
Dec. 01, 2011
Vincent J. Tylutki, Livonia, MI (US);
Janean E. Kowalkowski, Northville, MI (US);
Benjamin Radke, Waterford, MI (US);
Vincent J. Tylutki, Livonia, MI (US);
Janean E. Kowalkowski, Northville, MI (US);
Benjamin Radke, Waterford, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
In one embodiment of the invention, a method for determining an exhaust system condition includes determining if a reaction in an oxidation catalyst is performing acceptably based on a determined temperature of the exhaust gas flowing from the oxidation catalyst and determining a temperature of the exhaust gas flowing from a particulate filter. The method further includes determining a temperature of the exhaust gas flowing into the oxidation catalyst, determining an exhaust system condition based on a first difference between the temperature of the exhaust gas flowing from the particulate filter and the temperature of the exhaust gas flowing from the oxidation catalyst and a second absolute difference between the temperature of the exhaust gas flowing from the oxidation catalyst and the temperature of the exhaust gas flowing into the oxidation catalyst and communicating a signal to identify the determined exhaust system condition.