Robert Boschgmbh

Wolfgang Braun

Wolfgang Fehlmann

Dieter Junger

Hans-Christoph Magel

Karl Konrath

Bernd Mahr

Martin Kropp

Helmut Laufer

Manfred Schwarz

Roland Gronenberg

Joachim Kurz

Ewald Eblen

Peter Zweigle

Klaus Krieger

Hubert Greif

Heinz Nothdurft

Otmar Weiss

Hans-Peter Bauer

Ralph Engelberg

Markus Nieslony

Dirk Vahle

Elmar Huber

Hannes Pflug

Karl-Friedrich Ruesseler

Martin Katz

Dirk Schnittger

Wolfram Von Huelsen

Karl-Friedrich Ruessler

Berhard Bonse

Jurgen Frasch

Matthias Eisenmenger

Carlos Alverez-Avila

Heinz Northdurft

Johannes Pflug

Werner Naumann

Peter Nordhaus

J&ouml;rg Wolke

Wulf Emsmann

Alexander Wernau

A fuel injection device for an internal combustion engine includes a housing and a valve element which is arranged in the housing. The valve element interacts, in the region of a fuel outlet opening, with a valve seat. The valve element is embodied by at least one first part and at least one second part which are coupled to one another by means of a hydraulic coupler. The hydraulic coupler has a coupling chamber which is delimited at least partially by a sleeve which is guided on the first part of the valve element. Additionally a guide element guides an end region of the first part of the valve element, which end region being oriented toward the second part of the valve element.

Fuel injection device for an internal combustion engine

A fuel injection system includes a pressure chamber having a displacable piston which can be subjected to pressure via a low-pressure-side pressure booster chamber for compressing the fuel in a high-pressure-side pressure booster chamber to be delivered to an injector. The stroke of the piston is controllable essentially by the pressure in a differential chamber of the pressure chamber and is used to vary the fuel pressure delivered to the injector. Provision is made for enlarging the cross section of the outlet cross section out of the differential chamber of the pressure chamber are provided. The fuel pressure during the injection can be varied. A pressure increase can be simply achieved.

Fuel injection device with a pressure booster

A fuel injection system includes a pressure booster having a displaceable piston which can be subjected to pressure via a pressure booster chamber on the low-pressure side for compressing the fuel in a pressure booster chamber on the high-pressure side to be delivered to an injector. The stroke of the piston is controllable by the pressure in a differential chamber of the pressure booster and is used to vary the fuel pressure delivered to the injector. Means for continuously variable definition of the inlet cross section to the pressure booster chamber of the pressure booster on the low-pressure side or of the outlet cross section from the differential chamber of the pressure booster are provided.

Fuel injection device comprising a pressure amplifier

A pressure booster of a fuel injection system includes a displaceable piston unit (), which on one end can be subjected to pressure via a pressure booster chamber on the low-pressure side and on the other end has a pressure booster chamber on the high-pressure side for fuel compression. The piston unit has a further piston cross section, which is reduced compared to the first piston cross section provided for imposing pressure, for embodying a differential chamber that is connectable to a leak fuel line. At least one control conduit connects the pressure booster chamber on the low-pressure side to the differential chamber, whose opening is closed or opened as a function of the motion of at least parts of the piston unit.

Pressure booster for a fuel injection system

An arrangement for sealed leading of at least one conductor has a housing having a housing wall which surrounds a housing aperture, a closing part which closes the housing aperture, a seal arranged between the closing part and the housing wall which surrounds the housing aperture, at least one conductor track serving as at least one conductor which is pressure-tightly connected with a conductor track carrier formed by an elastic flexible carrier film, the conductor track carrier being routed between the housing and the closing part, the at least one conductor being insulated from outside and being in close contact with the seal in a closing position of the closing part, the closing part being held to the seal by a closing force, a part of the conductor track carrier having an elastic flexible extension which protrudes within the housing, an electrical component which is movably arranged within the housing, the extension being bent for contacting the at least one conductor track thereon on at an end of the extension directly to the electric component thereby fixing the end of the extension to the electric component which is movably arranged within the housing, so that the end of the extension follows each movement of the electric component.

Arrangement for the sealed lead-through of a conductor through the wall of a housing

A sealing disk which is provided with a contour with which a contour or a face of a component on which the disk is to be disposed, is associated in complementary fashion. For premounting of the disk fixed on the component, the disk has a securing part, which is deformed for assembly and is deformed into an undercut or recess.

Sealing disk

Fuel injection pump for an internal combustion engine

Apparatus for electrically connecting two electrical connecting

Fuel injection pump for internal combustion engines

A fuel injection pump for internal combustion engines has a pump housing, at least one pump piston which is rotatable and reciprocatingly movable, a cam drive which rotates and reciprocatingly moves the pump piston and includes a stationary part and a rotatable part, a fixing element which determines a rotary position of the stationary part and also radially engages the stationary part and is fixed tangentially to the stationary part, a valve operative for loading a pump working chamber limited by the pump piston during a feed stroke of the pump piston for controlling an injection-active pump piston stroke, and a mounting element which releasably mounts the fixing element on an inner side of a part of the pump housing.

A fuel injection pump for internal combustion engines comprises a suction space, a fuel duct, an electrically actuated valve controlling the fuel duct, a fuel supply tank, a distributor having a distributing opening, a plurality of pressure ducts connectable with injection locations of an internal combustion engine via injection lines, a pump plunger which defines a pump work space connectable with the suction space during a suction stroke and during a control portion of the delivery stroke of the pump plunger via the fuel duct, while fuel is delivered from the fuel supply tank to the suction space connectable during a respective delivery stroke of the pump plunger via the distributor opening with one of the plurality of pressure ducts. The valve has a closing phase which determines a high pressure fuel delivery into the injection lines, a fuel return, and a bypass line is provided to a fuel return and branches from the fuel duct between the suction space and the valve.

A governor for fuel injection pumps, said governor having two or three cooperating levers used to move a fuel injection quantity control slide. A regulating spring and the idling spring engage the drag lever. A start spring is disposed between the drag lever and the start lever, the start spring is opposed by the force of a flyweight assembly which is speed-dependent. When starting the combustion engine, the start lever, which is connected to the drag lever via a pivot pin, is in an initial position corresponding to a setting of the quantity control slide, which setting is smaller than the full injection quantity. When starting, the quantity control slide is displaced through a first control range to deliver a greater quantity of fuel, up to the full load injection quantities. Thereupon, when instituting a decrease, further displacement of the flyweight assembly results in the quantity control slide being displaced through a second control range in the direction of smaller quantities of fuel.

Governor for fuel injection pumps

Motor vehicle components that function in accordance with the operating state of a fuel injection pump require a load signal from the pump that represents an accurate quantity relationship, so that they can function in a properly adapted manner. The accurate quantity relationship is attained in that initially, by mechanical means, two additional stops, temporarily lengthened by a spacer gauge, on the pump limit the rotation of an adjusting lever. The conversion into an electrical signal is effected via a potentiometer coupled to the adjusting lever, the characteristic curve of the potentiometer being effected in such a way, in a calibration process by means of laser trimming of two compensating resistors connected in series with the potentiometer, that the set-point voltages with which predetermined quantities are associated are attained at both stops. This reference voltage is suitable for triggering succeeding components of the fuel injection pump.

Method for adjusting a travel transducer

A fuel injection pump, for use with a supercharged internal combustion engine, is provided with a full-load stop that is adjustable by means of a stepper motor in dependence upon operating parameters such as engine speed and manifold pressure. An electrical control device for the stepper motor is housed in a casing which is flange-mounted on the fuel injection pump and cooled by fuel. Electrical transducers for engine speed and manifold pressure are also mounted on the fuel injection pump.

Fuel injection pump

A fuel injection pump is proposed, which is provided with a hydraulically operating injection adjuster device which is acted upon by a pressure which is determined by the feed pressure of a feed pump driven in synchronism with the fuel injection pump and by the control behavior of a pressure control valve. The pressure control valve has a piston controlling a relief line, and the piston is controllable by means of the pressure to be fed in, counter to the restoring force of a spring, and counter to a pressure controlled via a pressure maintenance valve and a switchable relief valve disposed parallel thereto. The valve is also connected to a device for adjusting the biasing of an idling spring of the governor of the fuel injection pump. With the increasing of the set pressure for the injection adjusting device upon closure of the valve, the biasing of the idling spring and thereby the idling rpm are both increased whenever the instant of injection is shifted toward 'early' during starting and warmup.

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Ditzingen, Germany

Wolfgang Braun