Patent · US Active

Control valve, in particular for metering in a fluid for a delivery pump which is arranged downstream

US9719475B2 · kind B2 · utility

0Cited by

12References

19Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Erik Thorwirth · Kassel, DE
Winfried Eckart · Freiberg, DE
Dominik Brunner · Sachsenheim, DE
Christian Heinen · Echterdingen, DE

Key dates

Filing date	Sep 21, 2015
Grant date	Aug 1, 2017
Priority date	—
Expiry date	Oct 29, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/85978
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A control valve is provided, in particular for metering in a fluid for a delivery pump which is arranged downstream. The control valve has a flow channel, an axially movable valve needle, and a valve element which can be loaded by the valve needle in an opening direction and is arranged in the flow channel. If the valve element is actuated in the opening direction by the valve needle, the fluid can flow back through the flow channel at least temporarily counter to the opening direction of the valve element. Upstream of the valve element as viewed in the backflow direction, the flow channel has a fluidically active shield which keeps the backflow at least partially free of a face of the valve element.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.