Robert Boschgmbh

Juergen Biester

Udo Schulz

Holger Jessen

Rainer Mayer

Thomas Schuster

Thomas Glasstetter

Christof Hammel

Ruprecht Anz

Lilian Matischok

Andreas Kellner

Rene Schenk

Dirk Hartmann

Horst Wagner

Dirk Samuelsen

Jens Damitz

Joachim Berger

Ruediger Fehrmann

Volker Pitzal

Peter Schubert

Andreas Pfaeffle

Manfred Strohrmann

Martin Grosser

Andreas Greis

Juergen Hammer

Andreas Huber

Helmut Randoll

Volker Stuerzl

Detlev Straub

Martin Hartz

Peter Schmitt

Alexander Huber

Lutz-Martin Fink

Andre Schoenegge

Rajendra Prasad Bandi

Samuel McCaig

The invention relates to a control device () for a vehicle having at least two drive units, comprising a first interface () which is designed to record a target torque (), and comprising a computer device () which is designed to cyclically minimise an evaluation function () for the operation of the at least two drive units, in order to determine a torque distribution () between the at least two drive units, wherein a boundary condition () of the evaluation function () is the generation of the target torque (), wherein the evaluation function () has a penalty term (), which evidences a change in the torque of one of the at least two drive units with an evaluation penalty. The invention also relates to a corresponding drive train and a corresponding method.

Control device, drive train and method

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 for controlling a drive unit of a vehicle which allows a comfortable compensation of the torque requirement of ancillary components. In this method, torque losses are compensated in a steady-state manner in an overrun and an acceleration operation. The steady-state compensation of the torque losses in overrun operation is weighted by a first weighting factor. The first weighting factor is raised in a linear manner when the drag torque decreases in amount, until acceleration operation is reached.

Method of controlling a drive unit of a motor vehicle

Method for detecting a signal, particularly a voltage, for example a battery voltage, having the following steps:

Method and device for detecting a signal

A method for detecting a malfunction of a sensor measuring a measured quantity is provided, in which a signal-range check for the output signal of the sensor is performed, provided that the measured quantity is within a permissible range. If the measured quantity is outside the permissible range, no signal-range check is performed, but the output signal is used for detecting the measured quantity and for further calculations. The sensor may be, for example, a hot-film air-mass meter. If this is the case, the measured quantity is the drawn-in air mass, and the signal-range check is performed, provided that the engine operating state and thus the drawn-in air satisfies specifiable conditions. In addition to the signal-range check, onboard diagnoses with regard to specifiable plausibility criteria relating to the offset-drift and/or the sensitivity-drift of the sensor may also be performed.

Method for detecting malfunctioning in a sensor

The method and apparatus () control a drive unit () with an internal combustion engine (), so that changes of an output variable of the drive unit () during load change are limited. The method includes formulating a desired behavior of the output variable for the load change; changing the desired behavior of the output variable by changing an air supply of the internal combustion engine and forming at least a first preliminary value for adjusting the output variable by filtering the desired behavior according to an inertia of an air system for the air supply of the internal combustion engine.

Method and apparatus for controlling a drive unit with an internal combustion engine

A method and an arrangement for operating a drive motor of a vehicle are suggested. A resulting desired torque for controlling the drive motor is pregiven in dependence upon the driver command torque and additional desired torque quantities. To limit the resulting desired torque, a motor minimum torque is provided which is derived from the lost torques and is dependent upon rpm.

Method and device for operating a drive engine of a vehicle

A method and an arrangement for operating a drive unit of a vehicle are suggested. Starting from a driver command torque which is converted into a resulting desired torque while considering additional torques, a correction of the resulting desired torque is undertaken in dependence upon the loss torques, which are not available for the drive. For realizing a negative torque command of the driver, the driver command torque is corrected with the loss torque weighted in dependence upon accelerator pedal position and rpm.

Method and device for operating the drive motor of a vehicle

The present invention relates to a device and a method for dividing up a total fuel amount, which is to be injected into the combustion chamber of a cylinder during a combustion cycle, into a plurality of injections. To this end, a first fuel amount, which is to be injected during a first injection is determined, a fourth, minimum fuel amount for a third injection is determined, and the total fuel amount minus the first fuel amount is compared to the fourth, minimum fuel amount. When the total fuel amount minus the first fuel amount is greater than or equal to the fourth, minimum fuel amount, the first fuel amount and a second fuel amount, which is to be injected into the combustion chamber of the cylinder during a second injection, are set to zero, and a third fuel amount, which is to be injected during a third injection, is set to the total fuel amount.

Method and device for injecting fuel in an internal combustion engine

A method and a device for driving at least one load, in particular a solenoid valve for controlling the injection of fuel in an internal combustion engine. Using at least one switching element, the current flowing through the load is controlled as a function of a control signal. In the presence of at least one safety signal, the load is driven such that it adopts a safe state.

Method and device for driving at least one load

In the method for monitoring the sensor device (,), which supplies an analog output signal over a bidirectional output line (,) to an analysis unit (,) for evaluation, a predetermined test signal is applied to a sensor output in a monitoring phase, which is received in the analysis unit (,) and evaluated. In order to initiate the monitoring phase at any arbitrary time without the need of an additional connecting line between the sensor device and the analysis unit, a trigger signal of a predetermined trigger level is transmitted by the analysis unit (,) to the sensor device (,) over the output line (,) and is detected in the sensor device, which generates the predetermined test signal and transmits it to the analysis unit (,) over the bidirectional connecting line (,). A sensor device and connected analysis unit designed to perform this method are also described.

Method of monitoring a sensor device and sensor device and analysis unit with monitoring means

A process and a device for controlling an internal combustion engine having high-pressure injection, in particular for an internal combustion engine having a common rail system. The fuel is delivered by at least one pump from a low-pressure area into a high-pressure area. A pressure sensor detects the fuel pressure prevailing in the high-pressure area. At least one first and one second final controlling element are provided for influencing the fuel pressure prevailing in the high-pressure area.

Process and device for controlling an internal combustion engine

A method and a device for controlling an internal combustion engine having a high-pressure injection, and in particular, for controlling an internal combustion engine having a common rail system. The fuel is delivered by at least one pump from a low-pressure area into a high-pressure area. The fuel pressure prevailing in the high-pressure area is detected by a pressure sensor and is regulated by a pressure-regulation means. Given a defect in the area of the pressure regulation, the fuel pressure is controlled by influencing the flow of fuel in the low-pressure area.

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Boeblingen, Germany

Juergen Biester