Robert Boschgmbh

Helmut Clauss

Rainer Haeberer

Hans-Christoph Magel

Erwin Krimmer

Holger Rapp

Wolfgang Stoecklein

Bernd Rosenau

Martin Mueller

Markus Rueckle

Tilman Miehle

Andreas Kellner

Nadja Eisenmenger

Achim Brenk

Marco Beier

Thomas Pauer

Juergen Hanneke

Michael Mennicken

Gerd Loesch

Stefan Stein

Bernd Berghaenel

Dirk Vahle

Friedrich Howey

Joachim Boltz

Fabian Fischer

Martin Katz

Michael Jupe

Falko Bredow

Erhard Faix

Christian Grimminger

Michael Krause

Oezguer Tuerker

Andreas Gaudl

Martin Boehm

Rainer Lorenz

Lars Olems

Björn Scholemann

Hrvoje Lalic

Siegbert Griesinger

Reinhold Melcher

Torsten Burock

Thilo Rzymann

Daniel Bosse

Volker Kroeber

Frieder Buerkle

Klemens Steinberg

Felix Laudaeusser

Changyi Wang

Felix Landhaeusser

Lorenz Zerle

Andreas Fath

Bjoern Scholemann

Alper Comert

Kristin Schoenau

Holger Stephan

Karl Stichleutner

Enis Erkan

Mario Herrera

Dominik Wurst

Michael Waldenmaier

Axel Schnaufer

Thomas Nierychlo

The invention relates to a fuel injector for injecting fuel into the combustion chamber of an internal combustion engine, comprising a nozzle needle () which is able to perform stroke motions and by the stroke motion of which at least one injection opening can be exposed or closed, and further comprising a control valve () for controlling the stroke motion of the nozzle needle () in that, depending on the respective switch position of the control valve (), hydraulic pressure applied in closing direction to the nozzle needle () in a control chamber () is altered, and further comprising a sensor array () for detecting the needle closing time. According to the invention, the sensor array () is arranged in the low-pressure area of the fuel injector in a space () which is sealed with respect to the fuel-conducting area (). Sealing of the space () is effected by a membrane () made of a fuel-resistant, electrically conductive material, allowing the membrane () to also be utilized for implementing a ground connection.

Fuel injector

Disclosed is a fuel injection device comprising a housing and a valve element disposed therein and cooperating with a valve seat located in the area of at least one fuel discharge port. The valve element is composed of several parts while at least two parts of the valve element are coupled to each other via a hydraulic coupler.

Fuel injection device for an internal combustion engine using direct fuel injection

A fuel injection system for internal combustion engines, has a distributor tube and a high-pressure pump which is driven as a function of engine rpm and serves to generate the fuel pressure and fuel throughput required in the distributor tube in the applicable operating state of the engine, and also has a fuel metering unit, which is assigned to the high-pressure pump and is based on an electromagnetically actuated regulating valve. The fuel metering unit is disposed in the high-pressure pump, and the outlet of the regulating value discharges into the low-pressure region of the high-pressure pump. The inlet of the regulating valve communicates with the compression side of a prefeed pump. The regulating valve has a valve piston, which is actuated&mdash;into the opening position&mdash;by a compression spring and which is actuatable counter to the spring force&mdash;into the closing position&mdash;by an armature bolt of the electromagnet. Valve piston has at least one and preferably more radial control openings, which are in operative communication with the intake side of the high-pressure pump.

Fuel-injection valve for internal combustion engines

A fuel injection system for internal combustion engines, has a distributor tube and a high-pressure pump that is driven as a function of engine rpm and that serves to generate the fuel pressure and throughput required in the distributor tube in the applicable operating state of the engine. The system also includes a fuel metering unit, which is associated with the high-pressure pump and includes a regulating valve which is actuated electromagnetically. The fuel metering unit is disposed in the high-pressure pump, and the outlet of the regulating valve discharges into the low-pressure region of the high-pressure pump. The above design features make a fuel metering unit possible that is capable of metering the exact quantity of fuel desired in the applicable engine operating state to the high-pressure pump of the CR system.

Metering unit for a fuel injection system for internal combustion engines

A fuel injection system has a low-pressure pump for withdrawing fuel from a tank and a high-pressure pump, which is supplied by the low-pressure pump and has camshaft-actuated pump elements. An on-off valve is connected on the inlet side to the pressure side of the low-pressure pump and on the outlet side, is connected on the one hand to a camshaft chamber of the high-pressure pump and on the other hand, is connected to the suction side of the low-pressure pump. At a first pressure threshold, a spring-loaded valve piston of the on-off valve opens a connection between the low-pressure pump and the camshaft chamber and at a relatively higher second pressure threshold, opens a connection between the pressure side and the suction side of the low-pressure pump. A throttle bore in the bottom of the valve piston serves to ventilate the low-pressure system.

On-off valve in a fuel injection system for internal combustion engines

A pressure control valve for a fuel injection apparatus for internal combustion engines, including a housing with a high-pressure connection and a return connection and including a cup-shaped piston, which is disposed in a housing bore, can be moved axially between a valve seat oriented toward the high-pressure connection and a stop oriented toward the return connection, counter to the spring force of a spring acting in the direction of the valve seat, and has at least one through opening that connects the inside of the cup-shaped piston to the housing bore, is characterized in that at least one throttle element is disposed upstream and/or downstream of the valve seat in the flow direction of the fuel.

Pressure control valve

A throttle element for installation in a fuel carrying conduit, which is embodied as a screwed in insert with a head that constitutes an annular gap in relation to a cylindrical circumference wall of the conduit and this annular gap is disposed as a filter upstream of the throttle of the throttle element.

Throttle element for a vehicle

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Eberdingen, Germany

Helmut Clauss