Patent · US Expired

Injection valve having a bypass throttle

US7575180B2 · kind B2 · utility

2Cited by

13References

13Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Dirk Baranowski · Regensburg, DE
Wendelin Klugl · Dietenhofen, DE
Gerd Schmutzler · Kareth, DE
Joachim Wagner · Ludwigshafen, DE

Key dates

Filing date	Jan 9, 2004
Grant date	Aug 18, 2009
Priority date	—
Expiry date	Sep 7, 2025

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M2200/21
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to an injection valve, comprising a control chamber (15) with a control piston (16) that is functionally linked with a nozzle needle (35). The control chamber (15) is linked, via an inlet throttle (13), with pressurized fuel, and with an outlet throttle (14) with a valve chamber (9). A servo valve (5) is disposed in the valve chamber (9), said servo valve opening a connection between the valve chamber (9) and a return element (40) depending on its position. The inventive injection valve further comprises a bypass throttle (12) that is interposed between the fuel feed line and the valve chamber.

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