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. 19, 2002
Filed:
Oct. 22, 1998
Applicant:
Inventor:
Mark Borland, Troy, MI (US);
Assignee:
Chrysler Corporation, Auburn Hills, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01H 3/00 ;
U.S. Cl.
CPC ...
F01H 3/00 ;
Abstract
A control system is described for optimizing the reduction of nitrogen oxides in exhaust gas produced by an internal combustion engine, especially those internal combustion engines that employ a lean air-fuel ratio. The control system employs a temperature control assembly that is capable of selectively heating the exhaust gas prior to introduction into the NO catalyst system, thus rapidly bringing the temperature of the NO catalyst system up to operating temperature.