Robert Boschgmbh

Dirk Mentgen

Georg Mallebrein

Winfried Moser

Christian Koehler

Juergen Foerster

Matthias Philipp

Michael Oder

Helmut Rembold

Ferdinand Grob

Hansjoerg Bochum

Heinz Stutzenberger

Andreas Eichendorf

Eberhard Schoch

Ulf Pischke

Juergen Eckhardt

Guenter Hoenig

Reinhard Gantenbein

Bernd Herrmann

Frank Buchholz

J&uuml;rgen Ulm

The present invention relates to a method and a device for ascertaining the electric power, provided by a battery and a generator, available in a motor-vehicle electrical system. To determine the available electric power, both a battery model and a generator model are provided, from which the battery reserve power and the generator reserve power may be ascertained. The total power available in the vehicle electrical system is finally determined from the battery reserve power and the generator reserve power.

Method and device for determining available electric power in an instrument panel

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

Method and device for determining the charge status of a battery

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

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

A method and a device for driving at least one solenoid valve used for controlling the injection of fuel into an internal combustion engine. At the start of the driving (activation), the solenoid valve is supplied with a booster voltage that is elevated as compared to that used for the further driving. The energy and/or power output received by the solenoid valve at the start of the driving is able to be influenced as a function of the operating state of the internal combustion engine.

Method and device for controlling at least one solenoid valve

A method for operating an internal combustion engine especially of a motor vehicle is described wherein fuel is injected directly into the combustion chamber either in a first operating mode during a compression phase or in a second operating mode during an induction phase. The fuel mass (m,), which is to be injected into the combustion chamber, is determined in both modes of operation, inter alia, in dependence upon a computed desired torque (M,) which is to be outputted by the engine. An injection duration (t,in ms) is determined from the fuel mass (m,) which is to be injected. Then, an injection angle (&agr;,in degrees) is determined from the injection duration (t,in ms) in dependence upon the rpm (n,) of the engine (,) Finally, the fuel is injected into the combustion chamber during the injection angle (&agr;,in degrees).

Method for operating an internal combustion engine, especially of a motor vehicle

A fuel-supply system for an internal combustion engine, particularly of a motor vehicle. The fuel-supply system is provided with a pump for delivering fuel into a storage chamber and for producing a pressure in the storage chamber. In addition, provision is made for a pressure sensor for measuring an actual value of the pressure in the storage chamber, as well as a pressure-control valve for influencing the pressure in the storage chamber. A control unit is provided with means by which the pressure in the storage chamber is controllable to a setpoint value. In addition, the control unit is provided with means by which the closed-loop control of the pressure in the storage chamber is able to be superseded by an open-loop control.

System for operating an internal combustion engine, in particular of a motor vehicle

The invention is directed to a control method and a control arrangement for an adjusting device in a motor vehicle wherein at least two signal parameters of the drive signal are pregiven for driving the adjusting device alternately in time intervals. The signal parameters are pregiven to cause the actuating device to assume a desired position in time average.

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Schwieberdingen, Germany

Dirk Mentgen