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:
Apr. 19, 1994
Filed:
Apr. 15, 1992
Applicant:
Inventors:
Rodney L Mieville, Glen Ellyn, IL (US);
Ronald A Dictor, Naperville, IL (US);
Eugene H Hirschberg, Park Forest, IL (US);
Lawrence C Robinson, Joliet, IL (US);
Don M Washecheck, Naperville, IL (US);
Terrence A Renner, Naperville, IL (US);
Assignee:
Amoco Corporation, Chicago, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F01N / ; F01N / ; F01N / ;
U.S. Cl.
CPC ...
60274 ; 55DI / ; 60311 ; 422173 ; 95143 ;
Abstract
An exhaust gas emissions control system lowers cold-start hydrocarbon emissions by using heat exchange structure to lower the temperature of exhaust gas prior to the exhaust gas passing through a hydrocarbon adsorbent and using the extracted heat to heat a catalytic converter to its light-off temperature. In some embodiments, multi-component hydrocarbon adsorbers effective under different operating conditions further reduce cold-start hydrocarbon emissions.