Patent · US Expired

Injection valve

US7886993B2 · kind B2 · utility

31Cited by

31References

19Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Georg Bachmaier · Birkenfeld, DE
Bernhard Fischer · Wien, AT
Bernhard Gottlieb · Munich, DE
Andreas Kappel · Höhenkirchen-Siegertsbrunn, DE
Hans Meixner · Haar, DE
Enrico Ulivieri · Birkenfeld, DE

Key dates

Filing date	Aug 23, 2004
Grant date	Feb 15, 2011
Priority date	—
Expiry date	Aug 23, 2024

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M61/08
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An injection valve for injecting fuel comprises a valve housing (1) inside of which a drive unit (15) controls the movement of a valve needle (5) that is pretensioned by a spring (11). The injection valve also comprises a main chamber (27), which is provided inside the valve housing, is filled with fuel and accommodates the valve needle (5), and comprises a hydraulic bearing for the drive unit (15). The hydraulic bearing has a hydraulic chamber (29) that is connected to the main chamber (27), whereby fuel serves as the operating substance of the hydraulic bearing.

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