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:
Feb. 11, 2003
Filed:
Oct. 23, 2000
Rolf Brück, Bergisch Gladbach, DE;
Wolfgang Maus, Bergisch Gladbach, DE;
EMITEC Gesellschaft fuer Emissionstechnologies mbH, Lohmar, DE;
Abstract
The method and the novel device clean exhaust gas containing nitrogen oxide from an internal combustion engine. Liquid ammonia is preferably added as reducing agent from a reducing agent reservoir through a reducing agent line and a metering device through the use of open loop or closed loop control synchronously and/or phase-displaced in a relation to the corresponding output of exhaust gas from the combustion chamber and in portions adjusted to the quantities of NO generated. The synchronized and quantitatively adjusted addition of ammonia allows for NO and ammonium emissions to be kept low with a catalytic converter disposed downstream and having a small storage volume.