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. 18, 2000
Filed:
Aug. 21, 1998
Frank Brenner, Remseck, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
With known mixture delivery devices for introducing a reducing agent into an exhaust system of an internal combustion engine, a urea/water solution, with pressurized gas added, is introduced into an angled region of the exhaust system, upstream of a catalytic converter in order to produce the reduction of nitrogen oxides in the exhaust of the engine. With the new mixture delivery device, an annular spray body is incorporated into the exhaust system, which device has a continuous distributor conduit as well as spray conduits by way of which the mixture, which is supplied by a mixture conveying line and is comprised of pressurized gas and urea/water solution, is delivered to the exhaust flow upstream of the catalytic converter. The mixture delivery device is particularly suited for delivering a urea/water solution upstream of the catalytic converter in the exhaust system of a mixture-compressing, self-igniting internal combustion engine.