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:
Mar. 08, 2016
Filed:
Jul. 19, 2011
Jochen Doehring, Stuttgart-Stammheim, DE;
Wolfgang Ripper, Stuttgart, DE;
Juergen Hanneke, Stuttgart, DE;
Godehard Nentwig, Stuttgart, DE;
Jochen Doehring, Stuttgart-Stammheim, DE;
Wolfgang Ripper, Stuttgart, DE;
Juergen Hanneke, Stuttgart, DE;
Godehard Nentwig, Stuttgart, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to an injection device (), designed in particular for injecting fluid into an exhaust tract of an internal combustion engine, having a valve needle (), an injection chamber () having at least one injection opening (), and a control chamber (). The injection device () is designed such that a pressure differential between the injection chamber () and the control chamber () brings about a displacement of the valve needle () between an open position in which a fluid flow through the injection opening () from the injection chamber () is released, and a closed position, in which the injection opening () is closed off. The injection chamber () and the control chamber () are hydraulically connected to an inlet (), such that a pressure rise in the inlet () results in a pressure rise in the injection chamber (), and a pressure rise in the control chamber () delayed in time relative to the pressure rise in the injection chamber (), and said pressure differential brings about a displacement of the valve needle () from the closed position into an open position.