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:
Sep. 10, 2013
Filed:
Jul. 13, 2011
Dirk Von Meduna, Stuttgart, DE;
Matthias Kruse, Stuttgart-Vaihingen, DE;
Matthias Burger, Murr, DE;
Franz-josef Trompeter, Freiberg Am Neckar, DE;
Markus Buerglin, Ditzingen, DE;
Dirk Von Meduna, Stuttgart, DE;
Matthias Kruse, Stuttgart-Vaihingen, DE;
Matthias Burger, Murr, DE;
Franz-Josef Trompeter, Freiberg Am Neckar, DE;
Markus Buerglin, Ditzingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention proposes a method for metering a reagent, in which the reagent is sprayed into a spray tube () via an electrically activated metering valve (), and is mixed in the spray tube () with compressed air, and in which the reagent mixed with compressed air is introduced by means of the spray tube () into an exhaust gas duct () and is atomized, and a device for carrying out the method. The procedure according to the invention is distinguished in that the duration of the metering valve activation signal () is corrected depending on the differential pressure between the hydraulic pressure (p_Rea_hyd) of the reagent in the metering valve () and the pneumatic pressure (p_D_pneu) in the spray tube (). The procedure according to the invention permits a high degree of accuracy in the metering of the reagent.