Robert Bosch

Dieter Seher

Hans-Christoph Magel

Andreas Wengert

Nadja Eisenmenger

Achim Brenk

Gregory Rewers

Joachim Berger

Hermann Kull

Jurgen Brauninger

Thomas Kuttner

Reinhard Fenchel

Josef Wirz

Dieter Heck

Wolf Wessel

Gerhard Stumpp

Stefan Poledna

Herbert Schramm

Gerhard Engel

Manfred Birk

Werner Faupel

Martin Grosser

Michael Kirschner

Ulrich Gerstung

Ralf-Michael Bartke

Karl-Heinz Schmidt

Volker Kadelbach

Felix Forster

Klaus Bleuel

Dieter Hall

Wolfgang Flogel, Deceased

Werner Zimmerman

Wolfgang Bittinger

Wolfgang Dittrich

A method for operating a line circuit () for waste heat utilization of an internal combustion engine (), and a control unit (). A feed pump (), at least one heat exchanger (), an expansion machine (), a condenser () and a control unit () are situated in the line circuit (). The control unit () calculates a time period which is required until individual components or all the components of the line circuit () have reached a predefined temperature, in order to start up the line circuit () at least partially.

Method and control unit for operating a line circuit for waste heat utilization of an internal combustion engine

The invention relates to a method for operating a steam cycle process for using the heat of an internal combustion engine (), comprising a conduction circuit () in which a working medium circulates. Said conduction circuit () comprises at least one pump (), at least one heat exchanger (), an expansion machine (), a feedwater tank () for storing the liquid working medium, and a condenser (). Components of the conduction circuit () are frost-proofed by partially evacuating the liquid working medium. After the end of the circulation of the working medium, at least one of the pumps () continues to operate in order to evacuate the working medium at least from the pump () which continues to operate.

Method for operating a steam cycle process

The invention relates to a device and a method for the recovery of waste heat from an internal combustion engine (), according to which a feed pump (), a heat exchanger (), an expansion engine () and a capacitor () are arranged in a circuit () containing a circulating working medium. A bypass connection () is mounted in parallel to the expansion engine (), in the circuit (), the expansion engine () being coupled to the circuit (), or decoupled therefrom, according to an operating situation of the internal combustion engine ().

Device and method for the recovery of waste heat from an internal combustion engine

A system for controlling a motor vehicle includes a first device for determining control data required for controlling the motor vehicle. A second device monitors the first device. The first device determines second data on the basis of first data, pursuant to a test function. The second device determines third data on the basis of the first data, pursuant to the same test function. The first and/or the second device recognizes an error state relevant to safety, dependent upon a comparison between the second data and the third data.

System for controlling a motor vehicle

Fuel injection pump for internal combustion engines

A system for controlling a positioning unit in a motor vehicle includes various control units that influence the positioning unit coupled thereto. A drive slip control and an automatic transmission control both supply a control signal. Yet another control signal is dependent upon a driver request signal. For a period of time, the control signal from the automatic transmission control takes precedence over the other control signals.

System for the open-loop control of a motor vehicle

Device for producing a desired value of a control parameter of an

The invention is directed to a system for electronically controlling (open loop and/or closed loop) an internal combustion engine of a motor vehicle. By means of at least one measuring unit at least one signal is generated representing the position of a power-determining component and the measuring unit comprises several sensors. The measuring unit is associated with a power-determining component of the vehicle such as a throttle flap or the control rod and/or accelerator pedal. The sensors are checked with respect to their functional capability by comparing the signal values generated by the sensors to each other with respect to a pregiven tolerance range. When a fault of one or more of the sensors is detected, then that sensor or those sensors which is or are unaffected can be determined.

System for controlling an internal combustion engine in a motor vehicle

Sensors for motor vehicles emit a base signal when the variable which they measure takes on a base value. For example, a road-speed transducer supplies no pulses when either the vehicle is at standstill or when the sensor is defective. A method for providing a reliable operation of a motor vehicle includes the step of starting a substitute/emergency-function immediately when only the base signal is received from the sensor. If it is later determined that the base signal was only emitted because the measured variable took on its base value, then the substitute/emergency-function is again reversed. By starting a substitute/emergency-function basically always when a checked sensor emits no signal, it is ensured that safety measures are taken as rapidly as possible.

Method for reliably operating a motor vehicle

The invention relates to a method and apparatus for limiting road speed in electrically controlled diesel engines. The output signal of the road-speed transducer or, if the road-speed transducer is defective, the output signal of the engine speed transducer is evaluated by means of pregiven thresholds. In the presence of a simultaneous clutch signal and a quantity signal which is less than a pregiven injection quantity a waiting time is made available in advance of the quantity reduction so that when the clutch is actuated, fuel can be metered when the clutch pedal is depressed or the vehicle can be started on a hill. No transmission signal is necessary for limiting road speed whereby manipulations on the road-speed limitation are prevented.

Method and apparatus for limiting road speed in a motor ehicle having an

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Ilsfeld, Germany

Dieter Seher