Robert Boschgmbh

Matthias Philipp

Stefan Unland

Robert H Entenmann

Winfried Moser

Siegfried Rohde

Georg Mallebrein

Oskar Torno

Christian Koehler

Juergen Foerster

Michael Oder

Dirk Mentgen

Ulrich Rothhaar

Bernhard Stengel

Jorg Bonitz

Bernhard Miller

Rochus Knab

Walter Viess

Jurgen Zimmermann

Hans-Ernst Beyer

Bernd Herrmann

Walter Kunzel

Alfred Mahlberg

Wolfgang Kugler

Siegmar Forster

Herbert Winter

Helmut Rembold

Michael Baeuerle

Klaus Joos

Udo Hafner

Werner Haeming

Markus Amler

Karl Gmelin

Thomas Frenz

Ruediger Weiss

Hansjoerg Bochum

Uwe Mueller

Iwan Surjadi

Karl-Heinz Kugler

Edmund Schaut

Volkmar Goldschmitt

Christian Sobottka

Henri Huynh

Siegfried Rhode

Ulrich Rothaar

An electromagnetic injection valve is proposed. The electromagnetic valve includes two magnetic coils that are wound in opposite directions and have the same characteristics on the same magnetic circuit, causing the forces of the magnetic coils to cancel each other out at the same excitation current. The two magnetic coils with canceling effect transforms the actual turn-on action of the valve, i.e., the opening of, the valve, into a turn-off action in one of the two coils. A rapid current drop is then determined by an extinction voltage. This makes it possible to achieve rapid force increase times without increasing the supply voltage. The valve can be controlled with a conventional switching output stage or with a current-regulated switching output stage. Reversing a differential current at turn-off also makes it possible to shorten the closing action.

Electromagnetic injection valve

A method for cooling a fuel injection system and fuel injection systems are proposed that improve the hot-starting performance of the internal combustion engine.

Method and apparatus for cooling a fuel injection system

A fuel injection method for an internal combustion engine, an injection being implemented either in homogeneous normal operation or in inhomogeneous stratified operation. In doing so, a characteristic value for knock is detected in at least one cylinder of the internal combustion engine in inhomogeneous stratified operation. At least the one cylinder is switched over from inhomogeneous stratified operation to homogeneous normal operation if the detected characteristic value of the one cylinder meets a predetermined first criterion.

Fuel injection method

An internal combustion engine is provided with an injection valve with which fuel can be injected directly into a combustion chamber either during a compression phase in a first operating mode or during an intake phase in a second operating mode. In addition, a control unit is provided for shifting between the two operating modes and for differentiated control and/or regulation of the performance quantities that influence the actual torque of the internal combustion engine as a function of a setpoint torque in both operating modes. A change in the actual torque during a shifting operation is determined by the control unit, and at least one of the performance quantities is influenced by the control unit as a function thereof.

Internal combustion engine, a control element for the internal combustion engine, and method for operating the internal combustion engine

An internal combustion engine in for a motor vehicle in ( ) is described. The internal combustion engine ( ) has an injection valve with which fuel can be injected directly into a combustion chamber either during a compression phase in a first operating mode or during an intake phase in a second operating mode. In addition, a control unit is provided for shifting between the two operating modes and for differential control and/or regulation of the performance quantities that influence the actual moment of the internal combustion engine in both operating modes as a function of a setpoint moment. A change in the actual moment during a shifting operation is determined by the control unit and at least one of the performance quantities is influenced by the control unit as a function thereof.

Method of operating an internal combustion engine

In a method of and device for providing data of a model for determination of characteristic variables for controlling an internal combustion engine, in particular an internal combustion engine with direct injection or suction pipe injection, for each predetermined operation point of the internal combustion engine at least one local model in particular of low order is provided with data.

Method of and device for determination of characteristic values of an internal combustion engine

An internal combustion engine, in particular for a motor vehicle, is described. The internal combustion engine is equipped with an injection valve with which fuel can be injected directly into a combustion chamber either, in a first operating mode, during a compression phase or, in a second operating mode, during an intake phase. Also provided is a control device for switching between the two operating modes and for differing open-loop and/or closed-loop control, in the two operating modes, of the operating variables influencing the actual torque of the internal combustion engine as a function of a reference torque. A change in the actual torque during a switchover is operation is detected by the control device and as a function thereof, at least one of the operating variables is influenced by the control device.

Method for operating an internal combustion engine

Method for operating an internal combustion engine, especially of an

In a system for the closed-loop control of the supercharging of an internal-combustion engine, a manipulated variable is produced by means of a controller in dependence upon the deviation between a desired supercharging and an actual supercharging. With this manipulated variable, a final controlling element is triggered, which influences the supercharging of the internal-combustion engine. The controller parameters of the controller are repeatedly optimized. To this end, a model for the internal-combustion engine is specified, inclusive of a charging device, and the model parameters are determined from the manipulated variable and the actual supercharging. Controller parameters are determined from the model parameters and relayed to the controller. Moreover, in certain operating states, the controller parameters are stored in start-up characteristic maps. The start-up characteristic maps supply the initial values for the controller parameters each time the closed-loop control is activated.

System for the closed-loop control of the supercharging of an

Method and device for recognizing the knocking of an internal-combustion

A method for recognizing a power stroke of each cylinder in a four-stroke engine calls for sensing a parameter of a cylinder in the engine for producing a signal of the parameter, the parameter being selected from the group consisting of pressure and knocking, and comparing the signal with a threshold value for determining whether the signal exceeds the threshold value and thereby is indicative of the cylinder being in a corresponding combustion stroke. In addition to sensing the pressure and knocking of the cylinder, sensing of sound signals from the cylinder is also employed in order to determine power and intake strokes of the cylinders.

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Vaihingenenz, Germany

Matthias Philipp