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:
Oct. 22, 2013
Filed:
Mar. 21, 2011
Thomas Larose, Jr., Redford, MI (US);
David Michael Vanburen, Livonia, MI (US);
Kari Jackson, Redford, MI (US);
Patrick Barasa, Ann Arbor, MI (US);
Michael V. Taylor, Wolverine Lake, MI (US);
Thomas LaRose, Jr., Redford, MI (US);
David Michael VanBuren, Livonia, MI (US);
Kari Jackson, Redford, MI (US);
Patrick Barasa, Ann Arbor, MI (US);
Michael V. Taylor, Wolverine Lake, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A temperature of exhaust gas downstream of an oxidation catalyst is compared to a temperature of the exhaust gas upstream of the oxidation catalyst to determine if the downstream temperature is increasing over time or decreasing over time as hydrocarbons are injected into the flow of exhaust gas to regenerate a particulate filter. The oxidation catalyst is determined to be quenched when the temperature of the exhaust gas downstream of the oxidation catalyst remains constant or decreases over time as the rate at which the hydrocarbons are injected into the exhaust gas increases. The oxidation catalyst is determined to not be quenched when the temperature of the exhaust gas downstream of the oxidation catalyst increases over time as the rate at which the hydrocarbons are injected into the exhaust gas increases.