Patent · US Expired

Fuel injection valve for internal combustion engines

US6691934B2 · kind B2 · utility

1Cited by

5References

6Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Walter Egler · Stuttgart, DE
Peter Boehland · Erbach, DE
Sebastian Kanne · Stuttgart, DE

Key dates

Filing date	Mar 24, 2003
Grant date	Feb 17, 2004
Priority date	—
Expiry date	Mar 24, 2023

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M2200/315
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A fuel injection valve includes a housing in which a pistonlike valve member is disposed longitudinally displaceably in a bore to cause at least one injection opening to communicate with a pressure chamber embodied in the housing. An inlet conduit discharges into the pressure chamber to fill the pressure chamber with fuel at high pressure. A fuel-filled control chamber in the housing at least indirectly exerts a force acting in the closing direction on the valve member. The control chamber communicates with the inlet conduit and can be made to communicate via a control valve with a leak fuel chamber. A damping chamber communicates with the inlet conduit via a throttle.

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