Robert Boschgmbh

Ulrich Vieweg

Uwe Grytz

Christof Vogel

Klaus-Henning Krohn

Edwin Liebemann

Waldemar Hans

Anwar Abidin

Joerg Lange

Thomas Betzel

Mathias Thomas

Fuel injection device for an internal combustion engine

Fuel delivery system for an internal combustion engine

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.

Electromagnetically actuable injection valve

The invention provides sealing ring formed by a ring inner part and a bulge, the bulge extending radially outward at a right angle to a longitudinal axis of the ring so that a T-shaped cross section of the sealing ring is produced. The slightly conically extending inner surfaces of the sealing ring are pressed radially outward upon assembly so that a long guide area of the sealing ring on the contact pin is created which completely precludes any tilting of the sealing ring and increases the axial sealing. The sealing ring is particularly suitable for use in electromagnetically actuatable fuel injection valves.

Sealing ring for a contact pin

Growing community of inventors

Frensdorf, Germany

Ulrich Vieweg