Robert Boschgmbh

Ruediger Fehrmann

Matthias Schueler

Jens Damitz

Dirk Samuelsen

Horst Wagner

Michael Kessler

Tobias Kress

Andreas Huber

Mohamed Youssef

Joachim Palmer

Wolfram Gerwing

Peter Skala

Wolfgang Fischer

Andreas Kellner

Rainer Buck

Bernhard Ledermann

Alexander Schenck Zu Schweinsberg

Claudius Bevot

Juergen Biester

Rolf Reischl

Thomas Steinert

Franz Raichle

Vincent Dautel

Arnold Engber

Maik Schaufler

Volker Stuerzl

Thomas Schulz

Peter Schmitt

Andre Schoenegge

Lutz-Martin Fink

Gabriel Scolan

Markus Jung

The invention is based on a method for operating an engine drive train having a connectable electrical machine, the electrical machine being drivingly connectable to the engine in whose exhaust gas system an exhaust gas cleaning device is located. A moment output of or drawn by the electrical machine is impressed on a moment of the engine that is demanded by an engine control unit, as a function of an operating state of the exhaust gas cleaning device.

Method of and apparatus for operating a drive train with an electrical machine

A method and a device for operating an internal combustion engine, in particular a motor vehicle having a plurality of cylinder banks are described, making it possible to eliminate fluctuations in a time trend in an output quantity of the internal combustion engine that may result due to differences in operation of different cylinder banks of the internal combustion engine. A characteristic value of the output quantity of the internal combustion engine is determined repeatedly over time. The thus formed time trend in the characteristic value for the output quantity of the internal combustion engine is filtered as a function of the operation of the cylinder banks.

Method and device for operating an internal combustion engine

A device and a method for controlling an internal combustion engine, in particular a diesel engine, are described. Based on the signal from a structure-borne noise detector, parameters are determined which are used to regulate the internal combustion engine. At least one parameter is determined through an analysis that includes a filtering which selects at least two angular ranges.

Method and device for controlling an internal combustion engine

A method for calibrating at least two sensors for sensing a variable characterizing the combustion process in an internal combustion engine of a motor vehicle, operated in individual-cylinder fashion and having at least two cylinders, is provided. According to the present invention, at least one operating point of the internal combustion engine, at which an equalization of the at least two cylinders by at least one fuel quantity equalization method is performable with high accuracy, is determined. At the at least one operating point of the internal combustion engine, an equalization of the at least two cylinders is performed by the at least one fuel quantity equalization method. After the equalization of the at least two cylinders has been accomplished, at least one sensor parameter of the at least two sensors is mutually adjusted.

Method for calibration of the cylinder sensors suite on an internal combustion engine with individual cylinder operation in particular in a motor vehicle

A method for correcting the position of the angle marks of an incremental gear of a rotary speed sensor and/or rotary angle sensor of an internal combustion engine and to a system therefor. The method is characterized by the following steps: a) recording the angle marks using the rotary speed sensor and/or the rotary angle sensor, b) measuring the combustion chamber pressure in the respective cylinder of the internal combustion engine, c) assigning a measured pressure value to the recorded angle mark positions, d) possibly correcting the measured pressure values in a signal-conditioning device, e) storing the recorded angle mark positions with the appertaining, measured pressure values in a measured value table, f) storing of the ideal pressure values derived at the ideal angle mark positions in a reference table, g) comparing the pressure values, that were measured and possibly preprocessed in the signal-conditioning device to the ideal pressure values, h) determining deviations of the measured angle mark positions from the ideal angle mark positions, at the corresponding cylinder pressure values in an evaluation unit, and i) correcting the measured angle mark positions by the deviations determined.

Method for correcting the position of the angular marks of an incremental wheel of a rotational speed sensor and/or an angle of rotation sensor, and system therefor

A method and a device () for consistent bidirectional analysis of engine characteristics map data in an engine characteristics map are described. The engine characteristics map data represents interlinked technical variables. In this method, first a characteristic curve representing the interdependence of two of the technical variables is determined. This characteristic curve forms the basis for additional conversions in bidirectional analysis of the particular engine characteristics map.

Method and device for consistent bidirectional analysis of engine characteristics map data

A method and device for controlling an internal combustion engine in which a first variable characterizing the pressure in the combustion chamber of at least one cylinder in the internal combustion engine is detected by at least one sensor. A second variable is determined on the basis of the first variable. Features which are assigned to different partial injections are obtained by forming the difference within the second variable.

A device and a method for controlling an internal combustion engine, where a first variable characterizing the pressure in the combustion chamber of at least one cylinder of the internal combustion engine is measured by at least one sensor. A second variable characterizing the energy released during the combustion is ascertained from the first variable. When a threshold value of the second variable is exceeded, a third variable characterizing the combustion process is detected.

A method and a device are described for filtering a variable. A first filtering arrangement is used for forming an output variable as a function of an input variable, the first filtering arrangement having at least a delaying effect. The input variable of the first filtering arrangement is corrected using a correcting variable which is obtained by starting from the input variable of the first filtering arrangement and by filtering, using a second filtering arrangement.

Method and device for filtering a signal

A method is described for determining the angle-of-rotation position (&#x3c6;) of a shaft of an internal combustion engine, in particular a crank angle (&#x3c6;) of a crankshaft, information at least about incremental angles of rotation (&#x394;&#x3c6;) of the shaft and running times (T) for each incremental angle of rotation (&#x394;&#x3c6;) being detected on the basis of signals which indicate the rotation of the shaft and are spaced with intervals between them, and stored at least temporarily the instantaneous angle-of-rotation position (&#x3c6;) being determined in the period of time between two signals by extrapolation of the angle-of-rotation position (&#x3c6;) thus detected, taking into account at least one angular velocity ({overscore (&#x3c9;)}) and/or change in angular velocity (&#x394;{overscore (&#x3c9;)}) extrapolated from the stored information. In addition, a corresponding device is also described.

Extrapolation method for the angle-of-rotation position

A method and device for controlling an internal combustion engine. A first variable is predefined on the basis of a signal of a combustion chamber pressure sensor or a structure-borne noise sensor. This first variable characterizes the combustion process in the combustion chamber of at least one cylinder of the engine. A second variable is read from a characteristics map; a manipulated variable for influencing the combustion process is predefinable from this second variable. The characteristics map and/or the second variable read from the characteristics map are adapted as a function of at least one feature which is determined on the basis of the first variable.

A device and a method for controlling a drive unit of a vehicle. Starting from the position of an operating element, a power determining signal may be preselected. The actuator element is controlled as a function of a filtered power determining signal. The signal is filtered with a filter having at least one high-pass filter and one low-pass filter connected in parallel. The filtering is performed so that the filtered signal has at least one corresponding pulse in a transition to a modified signal.

Method and device for controlling a drive unit of a vehicle

A method and an apparatus for controlling an internal combustion engine are described. At least one sensor serves to detect a first variable that characterizes the pressure in the combustion chamber of at least one cylinder. A second variable, which characterizes the maximum value of the change and/or the location of the maximum value of the change, is determined on the basis of this first variable. This second variable serves to control operating parameters of the internal combustion engine in an open-loop and/or a closed-loop manner.

Method and apparatus for controlling an internal combustion engine

A device and a method are described for controlling an internal combustion engine, in which a control deviation and a governor are allocated to each cylinder of the internal combustion engine, each governor preselecting a cylinder-specific triggering signal on the basis of the allocated control deviation. Cylinder-specific actual values are ascertained on the basis of a signal from a sensor arranged in the exhaust train and are compared to a setpoint value. Triggering signals for the cylinder-individual control of the fuel quantity and/or air quantity are preselected on the basis of the comparison.

A method and a device are described for controlling an internal combustion engine. A manipulated variable is specifiable on the basis of at least one measured quantity. The measured quantity is filterable by at least one filter. An excitation variable is superimposed on the manipulated variable, and the properties of the filter are determined on the basis of the resulting reaction of the measured quantity.

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Leonberg, Germany

Ruediger Fehrmann