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:
May. 02, 1995
Filed:
Oct. 04, 1993
Andrew A Adamczyk, Jr, Dearborn, MI (US);
Clifford N Montreuil, Dearborn, MI (US);
Scott C Williams, Dearborn, MI (US);
Ford Motor Company, Dearborn, MI (US);
Abstract
An automotive engine and exhaust aftertreatment system includes an engine, a catalytic exhaust aftertreatment device for receiving exhaust gas from the engine, and an air source for supplying air to the exhaust stream entering the catalyst. An exhaust gas oxygen sensor determines the amount of oxygen contained in the exhaust entering the catalyst, and an engine control computer connected with the air source and with the oxygen sensor monitors the amount of oxygen contained in the exhaust and controls the amount of air supplied to the exhaust stream by the air source such that the available oxygen is slightly in excess of the stoichiometric requirement. In this manner, the light-off time of the catalyst is minimized.