Robert Boschgmbh

Volker Pitzal

Udo Schulz

Matthias Mrosik

Johannes-J&ouml;rg Rueger

Juergen Bauer

Martin-Peter Bolz

Rainer Mayer

Torsten Heidrich

Gerit Edler Von Schwertfuehrer

Rainer Bitzer

Wolfram Gerwing

Friedrich Boecking

Franz Laermer

Bernd Mueller

Werner Hess

Udo Diehl

Christian Grosse

Johannes-Joerg Rueger

Holger Huelser

Marko Poljansek

Holger Bellmann

Rolf Maier-Landgrebe

Rainer Gmehlich

Juergen Biester

Martin Grosser

Andreas Huber

Bertram Sugg

Werner Kind

Guenter Kettenacker

Christian Tischer

Thomas Proepper

Ute Gappa

Rajendranath Goswami

Marko Pojansek

Oliver Froehlich

A method for plausibilization of an engine control function for an internal combustion engine includes: provision of injection parameters with which an injection of fuel into cylinders of the internal combustion engine is controlled on the basis of a torque that is to be realized; estimation of an actual torque of the internal combustion engine as a function of the injection parameters; and evaluation of the actual torque as a function of the torque that is to be realized, in order to plausibilize the engine control function.

Method and device for monitoring an engine control unit

A method and a device for controlling a drive unit of a vehicle are provided in which, starting from the comparison of a first acceleration variable, which is calculated at least from the operating state of the drive unit, and a second acceleration variable, an error is detected. The second acceleration variable includes a first component, in the direction of the vehicle longitudinal axis, and a second component, perpendicular to the vehicle longitudinal axis.

Method and device for controlling a drive unit of a vehicle

In a method for monitoring the functional capacity of an engine controller having a plurality of execution units, a comparison operating mode is provided, in which a torque monitoring program is executed on a plurality of execution units of the system, and signals outputted during the execution of the monitoring program by the execution units are compared with one another in order to recognize an error.

Method and device for monitoring a functional capacity of an engine controller of an internal combustion engine

In a method for operating an internal combustion engine, in particular of a motor vehicle, the internal combustion engine is controlled by at least one drive variable, and an instantaneous torque output by the internal combustion engine is determined from a performance variable of the internal combustion engine that differs from the drive variable. To determine the instantaneous torque, an exhaust-gas temperature of the internal combustion engine is used as performance quantity that differs from the drive variable.

Method for operating an internal combustion engine

A method is provided for operating an internal combustion enginein overrun condition, which method includes the steps of: release of a monitoring of a control signal for a power actuator of the internal combustion engine when predetermined release conditions have been satisfied, which include the exceeding of a release rotary speed of the internal combustion engine; after the release, comparing a control signal for the power actuator of the internal combustion engine to a threshold value, and triggering an error response if the control signal exceeds the threshold value. The method provides that the release speed is varied as a function of the intervention of an idling speed control in the formation of the control signal. Also provided is a control unit which controls such a method.

Method and device for operating an internal combustion engine in overrun conditions

A method for monitoring an internal combustion engine is described in which fuel is injected directly into at least one combustion chamber in at least two partial injections via at least one final controlling element, in which an actual torque is determined at least on the basis of one fuel mass that is to be injected and/or has been injected, such actual torque being compared with a permitted torque of the internal combustion engine and an error response being initiated if the actual torque is in a predefined ratio to the permitted torque. A corresponding application of the method for monitoring an internal combustion engine as well as a corresponding device are also described.

Method for monitoring an internal combustion engine

A method and an apparatus for controlling system parameters, in particular for controlling the voltage applied to piezoelectric elements ( ) within a circuit (A) for charging and discharging piezoelectric elements ( ) are described. The method is characterized by modifying at least one control parameter for the control of a system parameter, in particular a target voltage for the voltage applied to a piezoelectric element ( ), in view of at least one systematic error occurring during a first control procedure of the system parameter to obtain a corrected control parameter for a second and/or a further control of the system parameter. The apparatus is particularly eligible for use with the inventive method.

Method and apparatus for controlling system parameters

A method is proposed for diagnosing the drive voltage for a piezoelectric actuator of an injector, in which the drive voltage is measured for the individual phases of the injection procedure. With respect to each control phase, a corresponding tolerance band is provided, which is set using the setpoint value of the drive voltage. The tolerance ranges are established as a function of operating and/or environmental conditions. If, for the individual drive cycles, the corresponding tolerance ranges are not reached, then, in response to repeated measurement, these erroneous measurements are counted. When a preestablished number for the erroneous measurements is exceeded, then an ongoing error is diagnosed. If, after a certain time, the number is not exceeded, then the counter is reset. In the case of an error, the error storage unit can be reset using a maintenance plug-in device during maintenance.

Method for the diagnosis of the voltage control for a piezoelectric actuator of an injection valve

In an apparatus and a method for monitoring a drive unit of a vehicle and/or components allocated thereto, a torque variable is determined that characterizes the torque requirement of the drive unit and/or the allocated components. Faults are recognized on the basis of the torque variable and/or a variable on the basis of which the torque variable is determined.

Method and apparatus for monitoring a drive unit of a vehicle and/or components allocated thereto

Fuel injection system comprising a piezoelectric element for controlling the amount of injected fuel and further comprising a control unit for determination of a possible fault of the piezoelectric element or of an electric circuitry driving the piezoelectric element based upon a value related to the capacitance of the piezoelectric element.

Fuel injection system

The invention is directed to a method and an arrangement for controlling a motor vehicle having an integrated electric machine which generates electric as well as mechanical power. In the context of a hierarchal control structure having several logic components, the electric machine is allocated as a component &ldquo;electric drive&rdquo; to the component &ldquo;drive&rdquo; with respect to its function for generating mechanical power and as a component &ldquo;generator&rdquo; to the component &ldquo;vehicle electric drive&rdquo; with respect to its function for generating electric power.

Method and arrangement for controlling a vehicle

The invention describes a method and an apparatus for a fuel injection system with a piezoelectric element for controlling the amount of injected fuel by charging and/or discharging the piezoelectric element, wherein the fuel injection system comprises a current flow controller for charging and/or discharging the piezoelectric element based upon the gradient of a voltage across the piezoelectric element due to a charge the piezoelectric element is carrying.

Method and apparatus for regulating voltages and voltage gradients for driving piezoelectric elements

A method and a device for controlling operating sequences in a vehicle using at least one control unit having at least one non-volatile memory element, control being performed as a function of the respective vehicle version and/or control unit version, and the respective functions are selected during function selection by defining an identifier according to the version used, at least one predefinable data record and/or program code in the memory element corresponding to the selected functions, and the data record and/or program code being selected from a plurality of data records and/or program codes. The plurality of data records and/or program codes is generated during a version selection, the identifier containing configuration parameters, and the configuration parameters being used for determining the data record and/or the program code, the respective identifier, i.e. the configuration parameters being used for the selection of the version and the selection of the function.

Method and device for controlling operating sequences in a vehicle

A computer system for controlling the operation of a drive of a motor vehicle includes a plurality of different predetermined components each including at least one functional unit. Such components include a first component representing the motor vehicle as a whole and second component representing the drive. A plurality of interfaces is interposed between these components, being operative for transmitting data between such components. At least one storage stores information concerning such components and interfaces. The functional units mentioned above and the vehicle as a whole are controlled by controlling the above-mentioned components inclusive of the first component. In performing the control, request signals and inquiry signals are generated and transmitted through the interfaces between the components. The operation of the drive is controlled in dependence on the data exchanged between the components through the interfaces.

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Waldstetten/Wissgoldingen, Germany

Volker Pitzal