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:
Aug. 16, 2016
Filed:
Dec. 06, 2012
Robert Bosch Gmbh, Stuttgart, DE;
Frank Gottwald, Weissach, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A metering arrangement () is proposed for a liquid exhaust-gas aftertreatment medium for the aftertreatment of the exhaust gas of an internal combustion engine which has an exhaust-gas system, in particular for a urea/water solution, having a delivery pump () and a metering module (), wherein the delivery pump () is connected to a suction line () for sucking the exhaust-gas aftertreatment medium out of a tank (), wherein the delivery pump () and the metering module () are connected to one another via a pressure line (), and the exhaust-gas aftertreatment medium can be fed via the metering module () to the exhaust-gas system, wherein a recirculation pump () is arranged parallel to the delivery pump (), wherein the recirculation pump () is connected on the suction side to the metering module (). Furthermore, a corresponding method for metering is proposed.