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:
Aug. 12, 1997
Filed:
Nov. 02, 1995
Applicant:
Inventor:
Jerald A Cole, Long Beach, CA (US);
Assignee:
Energy and Environmental Research Corporation, Irvine, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
422171 ; 422173 ; 422175 ; 422177 ; 422178 ; 422179 ; 422180 ; 422198 ; 422206 ; 422211 ; 422222 ; 422223 ; 60297 ;
Abstract
A process and system for reducing cold start NO.sub.x, carbon monoxide, and hydrocarbon emissions from mobile source engine exhaust utilizes adsorption and desorption of NO.sub.x compounds on a regenerable sorbent material. Molecules of NO.sub.x are adsorbed onto the sorbent material during the ineffective warm up period of a three-way catalytic converter. When the catalytic converter reaches operating temperatures, the NO.sub.x molecules are thermally desorbed from the sorbent material and delivered to the catalytic converter for effective reduction to molecular nitrogen.