Patent · US Expired

Electromagnetically actuable injection valve

US5685493A · kind A · utility

7Cited by

3References

10Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Uwe Grytz · Bamberg, DE
Ulrich Vieweg · Frensdorf, DE

Key dates

Filing date	Apr 10, 1995
Grant date	Nov 11, 1997
Priority date	—
Expiry date	Apr 10, 2015

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M55/007
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A fuel injection valve prevents capillary flow by the provision of controlled pressure compensation. In the region of axial extension of the magnet coil, at least one radially extending transverse hole is introduced into the valve housing and this hole is covered by a diaphragm which surrounds the valve housing in the form of a ring. The diaphragm allows pressure compensation without the risk that moisture will penetrate into the interior of the valve and prevents negative capillary flows. The fuel injection valve is suitable, in particular, for use in fuel injection systems of mixture-compressing applied-ignition internal combustion engines.

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