Robert Boschgmbh

Raphael Combe

Andreas Sommerer

Markus Viereck

Regis Blanc

Olivier Charvet

Tony Dumont

David Lacroix

Sebastien Binsse

Jean-Roch Julien

Sebastien Chatelain

Alain Amblard

Romain Brut

The invention relates to a pressure regulating valve for regulating pressure in a high-pressure fuel accumulator for an internal combustion engine, comprising a valve piston () accommodated axially displaceably in a bore () in a valve housing (), acting on a valve closing member () in the direction of a valve seat (), said valve piston being connected at the end thereof facing away from the valve seat () to an armature () of a magnetic assembly () for actuating the pressure regulating valve, wherein the armature () is accommodated in an armature chamber () and the valve closing member () is accommodated in a valve chamber (). According to the invention, the valve chamber () and the armature chamber () are hydraulically connected via at least one groove () and/or bore () formed in the valve housing (), valve piston () and/or in the armature (), as well as at least one choke point ().

Pressure regulating valve for regulating pressure in a high-pressure fuel accumulator for an internal combustion engine

A method for determining a value of a current, which is required for changing a switching state of a pressure control valve of a fuel delivery system, in which the current flowing through the pressure control valve is varied from a starting value up to a target value, and a time curve of the current is analyzed, the value required for changing the switching state being reached when the curve of the current has a change in slope, this change being detected via a first derivation over time of the current.

Method for determining a value of a current

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Lyons, France

Raphael Combe