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:
Jun. 04, 2002
Filed:
Jan. 27, 2000
Applicant:
Inventor:
Werner Weisweiler, Remchingen, DE;
Assignee:
HJS Fahrzeugtechnik GmbH & Co., Menden, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 5/354 ; B01D 5/360 ;
U.S. Cl.
CPC ...
B01D 5/354 ; B01D 5/360 ;
Abstract
A process for reducing nitrogen oxides on a SCR catalyst disposed in an exhaust gas system of an internal combustion engine is performed by a device adapted to introduce ammonia (NH ) into the exhaust gas flow of the exhaust gas system before it reaches the SCR catalyst. The device includes a heatable pressure-tight converter, an NH store and a control unit with control signals processing engine operating characteristics and determining therefrom the NO output for controlling a timed valve for injection of an NH dose.