Patent · US Active

Fluid delivery device

US8826646B2 · kind B2 · utility

5Cited by

16References

21Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Christoph Waletzek · Stuttgart, DE
Peter Holek · Murrhardt, DE
Ralph Schmidt · Tettnang, DE

Key dates

Filing date	Apr 2, 2010
Grant date	Sep 9, 2014
Priority date	—
Expiry date	Aug 2, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02A50/20
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

A fluid delivery device, in particular for delivering exhaust gas posttreatment media, such as a urea-water solution, for an internal combustion engine, includes a movable work wall, in particular a work diaphragm. A work chamber is provided for a fluid that is to be delivered via at least one fluid connection. The work chamber is capable of being increased and decreased in size by means of the movable work wall, the at least one fluid connection, and at least one mechanism for moving the work wall upon an intake stroke and a compression stroke. The at least one mechanism is embodied such that the force for moving the work wall both in the intake stroke and in the compression stroke includes a Lorentz force.

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