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:
Feb. 21, 2012
Filed:
Oct. 18, 2007
Thomas Stewart, Waterford, MI (US);
Brent T. Deep, Fenton, MI (US);
Richard B. Downey, Holly, MI (US);
Douglas M. Kerchner, Goodrich, MI (US);
Thomas Stewart, Waterford, MI (US);
Brent T. Deep, Fenton, MI (US);
Richard B. Downey, Holly, MI (US);
Douglas M. Kerchner, Goodrich, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
An exhaust system for a vehicle having a diesel engine and a method of operation are disclosed. The exhaust system may include a diesel particulate filter, a pipe located downstream of the diesel particulate filter and an exhaust gas cooling assembly. The exhaust gas cooling assembly may have an air pump and a connecting pipe connected to the pipe and configured to direct air from the air pump into the pipe. During particulate filter regeneration, the air pump may be activated to push air into the exhaust in order to reduce the temperature of exhaust gasses exiting the vehicle.