Patent · US Expired

Dosing device for fluids, especially a motor vehicle injection valve

US7195182B2 · kind B2 · utility

16Cited by

6References

10Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Bernhard Fischer · Wien, AT
Bernhard Gottlieb · Munich, DE
Andreas Kappel · Höhenkirchen-Siegertsbrunn, DE
Enrico Ulivieri · Birkenfeld, DE

Key dates

Filing date	Dec 3, 2004
Grant date	Mar 27, 2007
Priority date	—
Expiry date	Sep 28, 2025

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M2200/16
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A dosing device comprises a housing (1) provided with an actuator, a dosing opening (8), a guiding shaft (6) which surrounds part of the valve needle (7) and forms a valve chamber (10) with the same, and a fluid chamber module (4) which is welded to the housing (1) in the form of a duct for guiding the valve needle (7) into the housing (9). The fluid chamber module (4) and the housing (1) are assembled along a separation surface (13) which is subjected to pressure by the dosing liquid and is formed almost only by axial cylinder wall surface parts (13) in order to reduce the pressure load on the weld seam (13).

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