Patent · US Expired

High-pressure injection system with a control throttle embodied as a cascade throttle

US7216629B2 · kind B2 · utility

0Cited by

8References

13Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Dirk Baranowski · Regensburg, DE
Wendelin Klugl · Dietenhofen, DE
Michael Von Dirke · Thalmässing, DE

Key dates

Filing date	Jun 19, 2003
Grant date	May 15, 2007
Priority date	—
Expiry date	Mar 4, 2025

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF15B2013/008
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A high pressure injection system comprises at least one fuel high pressure accumulator, a control chamber and a valve, in addition to an injection valve having a valve needle and a control piston. The control chamber is connected to the high pressure accumulator by means of an inlet throttle and to the valve by means of an outlet throttle. The control chamber controls the movement of the control piston and the valve needle connected thereto. To this end, flow conditions of the fuel flowing into and out of the control chamber are regulated by means of the inlet throttle and the outlet throttle. The inlet throttle is configured as a multi-stage throttle.

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