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. 21, 2016
Filed:
Feb. 19, 2013
Robert Bosch Gmbh, Stuttgart, DE;
Matthias Burger, Murr, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The present invention relates to a dosing valve and to a dosing device () for introducing a liquid medium into an exhaust-gas stream of an internal combustion engine () of a motor vehicle. The dosing device () has a pump () for delivering the liquid medium. The medium is injected into the exhaust-gas stream by means of a dosing valve () which can be controlled by way of an electromagnet (). The dosing device () comprises a housing () with a stepped bore (), wherein a pump sleeve () is guided sealingly in one portion () of the stepped bore (). A hollow-bored piston () is guided sealingly in a central bore () of the pump sleeve (). In a low-pressure chamber (), an armature () is fastened to the piston (), and furthermore a magnet sleeve () is fastened to the housing (). A stop sleeve () is arranged on a side of the low-pressure chamber () situated opposite the magnet sleeve (), wherein a stroke of the piston () is limited by the magnet sleeve () and/or by the stop sleeve ().