Robert Boschgmbh

Fuji Photo Film Company, Limited

Wilhelm Polach

Ernst Linder

Hermann Grieshaber

Helmut Laufer

Johannes Locher

Rudolf Babitzka

Ewald Eblen

Ulrich Flaig

Gerhard Engel

Josef Wahl

Manfred Birk

Hermann Kull

Alfred Schmitt

Joachim Tauscher

Fridolin Piwonka

Anton Karle

Pierre Lauvin

Alf Loffler

Gottlob Haag

Wolf Wessel

Johannes Brettschneider

Rolf Leonhard

Hubert Dettling

Karl-Heinz Hagele

Friedrich Boecking

Helmut Rembold

Gerhard Stumpp

Konrad Eckert

Klaus Dobler

Bernhard Lucas

Klaus D Muller

Werner Fischer

Bernd Mahr

Wolfgang Ripper

Hermann Eisele

Hanspeter Mayer

Walter Schlagmuller

Michael Offenhuber

Werner Zimmermann

Sven Huber

Heinz Britsch

Klaus-Dieter Zimmermann

Markus Foetschl

Wilhelm Stahl

Walter Frisch

Gerald Hoepflinger

A device for generating a mixture of reducing agent and air, having a mixing space into which reducing agent via a reducing agent delivery conduit and air via an air delivery conduit can be introduced into the mixing space, having means for pressurizing the air, in such a way that the air flows essentially at the speed of sound through the air delivery conduit.

Device and method for producing a reducing agent air-mixture

A valve for controlling fluids in which the valve is actuatable by a piezoelectric actuator that acts directly on a valve member of the control valve. To compensate for changes in length of different magnitudes resulting from temperature factors, a Peltier element is incorporated into the heat flow from the piezoelectric actuator to a heat-dissipating part of the housing, and the Peltier element is triggered by an electric control unit in such a way that temperature-dictated changes in length of the piezoelectric actuator are at least partly compensated for compared with those of the housing receiving the piezoelectric actuator.

Valve for controlling fluids

A fuel injection system for multi-cylinder internal combustion engines, which has one injection unit per cylinder. Each injection unit includes one injection valve, one control valve, one flow limiting valve and one injection nozzle and is supplied with fuel via a fuel delivery line. Each injection unit also has a control unit which actuates the applicable control valve. This actuated control valve then actuates the associated injection valve, which in turn opens the fuel delivery line upstream of the injection nozzle. The flow limiting valve disposed upstream of the injection valve in the fuel delivery line blocks fuel flow when the fuel quantity flowing through the flow limiting valve attains a maximum fuel quantity, and the flow limiting valve does not open again until the fuel delivery line is blocked downstream of the flow limiting valve. To improve this system, each injection unit is assigned a sensor, with which a leak downstream of the flow limiting valve can be indicated; the control unit increases the injection duration, for the cylinder affected by a leak, enough though the correlated fuel quantity is greater than the maximum fuel quantity.

Device for measuring the mass of a flowing medium

A method and apparatus for operating an internal combustion engine in which in the event of erroneous fuel injection, combustion is maintained following the expansion stroke via a constantly hot spot in the combustion chamber, in such a way that erroneously introduced fuel is combusted, by reducing the oxygen content in the combustion chamber, such that no later than by the end of the compression stroke of the engine, a possible conversion of existing fuel and existing oxygen can no longer occur to any substantial extent, because of the heating of the contents of the combustion chamber toward the end of the compression stroke, thus preventing this malfunction from destroying the engine.

Method and fuel injection system for operating in internal combustion

A process for operating an internal combustion engine in which in the event of an incorrect fuel injection, the combustion chamber of the engine is discharged toward the injection side by way of a pressure valve in such a way that by introducing burned exhaust gases into the combustion chamber in lieu of fresh atmospheric oxygen, the combustion is interrupted despite or precisely due to an excess of injected fuel present. The resultant impairment of the drive output is used as a signal to trigger an interruption of the fuel supply or to shut off the engine. This prevents a destruction of the engine as a result of a malfunction of the injection.

Process for operating an internal combustion engine and a fuel injection

The invention relates to a method and arrangement for preparing a fuel-metering signal M for a diesel engine starting with measured variables such as accelerator pedal position, rotational speed, lambda, exhaust gas temperature or torque. A fuel quantity request MW is pregiven in dependence upon the position of the accelerator pedal. This quantity request MW is supplied to a minimum selector together with a second signal. The output signal M of the minimum selector, in turn, determines the metered fuel. The second signal derives from a precontrol characteristic field 50 in dependence upon the speed. The output signal of the precontrol characteristic field MV is influenced by the controller output signal MR in specific operating conditions.

Method and arrangement for controlling the fuel metered in a diesel

Device for stopping an internal combustion engine

The invention is directed to a method and arrangement for controlling a self-igniting internal combustion engine. The arrangement includes at least one measured-value sensor, electronic control unit for forming a quantity signal for metering fuel, and a control unit for driving individual actuators for each cylinder. The actuators determine the quantity of fuel injected by the pump elements into the cylinders. Under specific conditions, a corrective unit is activated which determines corrective values specific to the cylinders for making the cylinders equal. The open-loop control unit applies the metering signal to the actuators in dependence upon the quantity signal and the corrective values.

Method and arrangement for controlling a self-igniting internal

Internal combustion engine

The invention is directed to a method and an arrangement for controlling the fuel injection in a high-pressure fuel pump. Magnetic valves determine the fuel quantity to be injected into the engine. The magnetic valve is controlled during the pumping phase of the pumping element in such a manner that first a preinjection and then a main injection is carried out. In specific operating conditions, the control apparatus determines the duration of the drive pulses for the magnetic valve at which a preinjection just takes place. With the duration of the drive pulses as a basis, the control apparatus forms compensating signals for the drive pulses which effect preinjection and stores the same.

Method and arrangement for controlling the injection of fuel in an

The invention relates to a method and arrangement for controlling the fuel metered to an engine and especially to a diesel engine. The engine includes a fuel pump drive by a shaft for which injection start and injection end is fixed by a corresponding control of the electromagnetically actuated valve. The drive pulses for pump-delivery start and pump-delivery end are generated in dependence upon the analog signal of an angle sensor.

Method and arrangement for controlling the metering of fuel in an

Safety circuit for a high-voltage generator of an electrostatic filter

Device for injecting fuel into combustion chambers of internal

An afterburner for clearing soot from a particle-laden gas stream has a housing centered on an upright axis and having a generally cylindrical upper portion having a downwardly open lower end, and a lower portion tapering toward the axis from the lower end of the upper portion and having at the axis a downwardly closed lower end. An exhaust tube opens at the axis into the upper housing portion above the lower end thereof. A feed tube opening tangentially into the upper housing portion above the lower end thereof introduces the particle-laden gas stream tangentially into the upper housing portion. Thus the soot particles of the gas stream move inertially radially outward and descend in the housing to collect at the lower end of the lower housing portion. An electrical heating element at the axis at the lower end of the lower housing portion burns the soot particles collecting therein.

Soot afterburner for motor-vehicle exhaust system

A device for removing soot particles from exhaust gas of an internal combustion engine includes an electrical filter having a tubular housing and a central electrode in the form of a cylindrical shell coaxially arranged in the filter housing. The cylindrical shell is supported at its ends by insulators and is provided with a plurality of juxtaposed discharge points. The wall thickness of the cylindrical shell is about 0.05 mm and the discharge points are cut out in the wall of the cylindrical shell and being bent in radial direction toward the inner wall of the filter housing. The sides of the segments connecting the discharge points are oriented in the direction of the center axis of the electrode.

Device for removing solid particles, particularly soot, from exhaust gas

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Moglingen, Germany

Wilhelm Polach