Robert Boschgmbh

Dr. Ing. H.c. F. Porsche Aktiengesellschaft

Audi Ag

Volkswagen Ag

Bmw Ag

Helmut Denz

Andreas Blumenstock

Ernst Wild

Werner Herden

Ulrich Steinbrenner

Georg Mallebrein

Rainer Frank

Klemens Grieser

Martin Klenk

Guenther Riehl

Karl Ott

Matthias Kuesell

Rudi Mayer

Hans Neu

Hong Zhang

Eberhard Schnaibel

Werner Hess

Winfried Moser

Ruediger Weiss

Werner Mezger

Albert Gerhard

Klaus Walter

Martin Zechnall

Wolfgang Wagner

Karsten Kroepke

Martin Haussmann

Andreas Pape

Hubert Bischof

Wilfried Burger

Uwe Konzelmann

Helmut Weyl

Werner Nitschke

Erwin Krimmer

Werner Fischer

Wolfgang Schulz

Gunther Plapp

Tilman Miehle

Andreas Roth

Lothar Raff

Helmut G Schwegler

Klaus Ries-Muller

Stefan Arndt

Martin Ludwig

Klaus Bottcher

Hans-Peter Stumm

Rudolf Moz

Manfred Franz

Bernd Diebold

Silke Haag

Klaus Boettcher

Hans Barho

Johannes-Dieter Wichterich

Manfred Pfitz

Armin Hassdenteufel

Andreas Kufferath

Manfred Zimmermann

Winfried Kuhnt

Gunther Kaiser

Christof Thiel

Ulrich Mayer

Achim Guenther

Christian Tischer

Stephan Pelters

Eugen Joos

Helmut Randoll

Christian Klinke

Helmut Gross

Martin Laichinger

Matthias Entenmann

Wolfgang Hoptner

Reinhard Palesch

Martin Person

Reinhard Gantenbein

Juergen Pischke

Karl-Heinz Gerlings

Dietmar Flaetgen

Hans-Peter Strobele

Joachim Heimes

Alfred Kloos

Wolfram Becker

Jens Drückhammer

Siegfried Wesinger

Oliver Heyna

Peter Etzold

Frank Kohler

Winfried Uttenweiler

Winifred Uttenweiler

Jurgen Stock

Stephan Hohne

Johann Siebler

Kurt Almstadt

Axel-Rene Michelet

Jurgen Eckhardt

Johannes D Wichterich

Guenter Rosenzopf

Michael Tochtermann

Stephan Rosenberg

George Mallebrein

Andreas Blumenstooh

Heinz Kraemer

In a venting system, in particular for a fuel tank of a motor vehicle, which has a sorption filter for temporarily storing fuel evaporating from the fuel tank and a fluid-conveying conveying device situated between the sorption filter and an air supply or an intake manifold of an internal combustion engine, according to the present system, the conveying device is a bidirectional conveying device which is switchable in a first conveying direction in the direction of the internal combustion engine for regenerating the sorption filter and in a second conveying direction in the direction of the sorption filter for carrying out a fuel tank leak diagnosis.

Venting system, in particular for a fuel tank

A device for selectively regenerating and performing tank leakage diagnosis of a tank ventilation system has a sorption filter and a pump. The sorption filter is configured to temporarily store fuel evaporating from a fuel tank. The pump is arranged at a fresh-air side of the sorption filter and is connected in fluid-conducting fashion to the sorption filter. The pump is configured to generate a fluid flow to regenerate the sorption filter.

Device for selectively regenerating or performing tank leakage diagnosis of a tank ventilation system

A sensor is provided, in particular a gas sensor for determining the concentration of a gas component in a measuring gas, which has a sensor element that projects from a housing by a measuring-gas-side end section exposed to the measuring gas, and a sheath tube having gas passageways, which is placed over the measuring-gas-side end section and affixed on the housing. To prevent condensation of water vapor contained in the measuring gas in the measuring space enclosed by the housing and the sheath tube, and thus the production of water droplets that reach the hot sensor element, sheath tube and/or sensor element are/is thermally decoupled from the housing. The thermal decoupling is produced using, for instance, a flange sleeve made of a material having poor thermal conductivity, which separates the sheath tube from the housing by a flange and, via a sleeve section, is inserted in the space between the housing and the measuring-gas-side end section of the sensor element.

Gas sensor with sheath tube wherein the sheath tube or the sensor element is thermally decoupled from the sensor housing

A starting device for an internal combustion engine includes a switching control device for controlling a starter motor. At least one power switching module connects the starter motor to a voltage source and is activated via an assigned control line. A control electronics is provided for controlling the at least one power switching module. A release device which records the power flow of the internal combustion engine makes available, as a function of the running of the internal combustion engine, a release signal for the release of the activating switching procedure by the at least one control line. The release device includes a first release switching channel that works independently of the control electronics and a second release switching channel that cooperates with control electronics. These are set up in such a way that an initiation of the activating switching procedure takes place only during the simultaneous release switching setting of the two release switching channels. A diagnosis device of the switching control device, at the ending of making available the release signal for the activating switching procedure by the release device, records the release switching setting of the first release switching channel. This makes possible the monitoring of the function of the first release switching channel, which increases the safety of the starting procedure. A method utilizing the components described for starting an internal combustion engine is also described.

Starter device for an internal combustion engine as well as a method for starting an internal combustion engine

A control apparatus for protected switching of a load encompasses at least two switch units in series with a load, to permit delivery of energy to a load when each switch unit is switched on and to block it when at least one of the switch units is shut off; an electronic control system for triggering each switch unit via a first switching path and second switching paths, and for monitoring its state; a delay element on the first switching path, such that each switch unit can be shut off both by way of a shutoff signal conveyed via the first switching path and by way of a shutoff signal conveyed via the second switching path; and in a state in which one of the switch units is shut off and the other is switched on, the electronic control system ascertains a malfunction of the first switching path if, after output of a shutoff signal on the first switching path, the other switch unit does not shut off within a predefined time window.

Protected control apparatus

An internal combustion engine controller includes a main processor for monitoring operating parameters of an internal combustion engine and a triggering device, working together with the main processor, for an electric fuel pump of the internal combustion engine. The triggering device works together with an electric activation device and operates so that the fuel pump is triggered essentially without time delay after actuation of the activation device. The internal combustion engine controller has an electronic switching device which operates so that, during an initialization process of the main processor, it triggers the electric fuel pump independently of the main processor.

Internal combustion engine controller and method for the operation of an internal combustion engine controller

During a start, particularly during a cold start, of an internal combustion engine without additional auxiliary drive, a precisely metered fuel mass is introduced into a combustion chamber. In the case of an internal combustion engine having direct fuel injection, a rail pressure prevailing in a high-pressure accumulator is frequently only insufficiently built up during a start, which has an unfavorable effect on the mixture formation. To improve the start performance of the internal combustion engine, the injection pressure available in the high-pressure accumulator is monitored during the start, and fuel from the high-pressure accumulator is first injected into the at least one combustion chamber when the injection pressure has reached or exceeded a specifiable threshold value. This ensures that the rail pressure is high enough, in order to inject a sufficient quantity of fuel into the combustion chamber so that an ignitable air/fuel mixture is formed.

Method for starting an internal combustion engine, particularly an internal combustion engine having direct fuel injection

A method and an arrangement for monitoring a pressure sensor are suggested which determines a value representing the ambient pressure of an internal combustion engine. Furthermore, an index for the extent of the correction of the mixture composition via the mixture control system is determined and the supplied air mass is detected from the throttle flap angle and the intake manifold pressure. A fault in the determination of the ambient pressure is detected when the measured air mass deviates from the computed air mass and the correction of the mixture control system is less than a predetermined limit value and when, for an open throttle flap, intake manifold pressure and ambient pressure deviate impermissibly from each other.

Method and device for monitoring a pressure sensor

A method and an arrangement control the drive unit of a vehicle. In this method and arrangement, an rpm limiting to a reference rpm takes place when the demand of the driver is withdrawn. The reference rpm is determined at the start of the withdrawal of the driver command.

Method and arrangement for controlling the drive unit of a vehicle

A method and a device for controlling an output variable of a drive unit in the starting phase is described. A controller is provided, regulating the actual value of at least one output variable to a setpoint variable of this output variable which is specified as a function of time. When at least one condition marking entry into the starting phase exists, the setpoint value of the output variable is initialized with the actual value of the output variable.

Method and device for controlling an output variable of a drive unit in the starting phase

Method and device for controlling a valve having variable valve lift, arranged in an intake or exhaust opening of a combustion chamber of an internal combustion engine, with control of the valve taking place as a function of an analysis of a pressure in the combustion chamber.

Electronic method and device for the control of gas exchange valves of an internal combustion engine having a variable opening function

The present invention relates to an ignition control device for the control of an ignition coil device for an internal combustion engine having an engine speed detection device for detecting the engine speed of the internal combustion engine at a detection instant within the ignition cycle of a given cylinder; a determination device for determining a predetermined ignition angle corresponding to the detected engine speed, a charging time corresponding to the detected engine speed and an appropriate start-of-charging angle; an ignition control value output device to output the start-of-charging angle and the charging time in a charging time output mode and to output the start-of-charging angle and the ignition angle in an ignition output mode to the ignition coil device; a detection device for detecting critical power loss states of the ignition control device driver stage in ignition angle output mode; and an ignition control mode determination device for selecting an ignition control mode from among the ignition angle mode output and charging time output mode for the ignition cycle; the ignition control mode determination device being configured in such a way that it selects charging time output mode if a critical power loss state of the ignition coil device driver stage is detected in ignition angle output mode.

Ignition control device and method

An ignition control device for controlling a coil device for an internal combustion engine, having a speed measuring device for measuring the speed of the internal combustion engine at a measuring time point within the ignition segment of a specific cylinder; an evaluating device for determining a preestablished ignition angle corresponding to the measured speed, a preestablished charging time corresponding to the measured speed, and a corresponding initial charging angle; an ignition-control-value output device for outputting to the coil device the initial charging angle and the charging time in a charging-time output mode, and the initial charging angle and the ignition angle in an ignition-angle output mode; an error estimating device for estimating an error of the ignition angle in the charging-time output mode and/or an error of the charging time in the ignition-angle output mode, on the basis of a possible speed change after the measuring time point; and an ignition control mode determining device for determining an ignition control mode from the ignition-angle output and charging-time output modes for the ignition segment based on the estimated error.

The invention is directed to a method and an arrangement for controlling the drive unit of a motor vehicle. At least two mutually redundant measurement quantities are detected which are compared to threshold values. A function of the control of the drive unit is activated or deactivated in dependence upon the ratio of at least one of the measurement quantities to at least one of the threshold values. Each measurement quantity is compared to at least one threshold value; signals, which characterize exceeding or dropping below the threshold value, are generated; and the function is activated or deactivated when a pregiven combination of these signals is present.

An electronic arrangement for controlling gas exchange valves of an internal combustion engine with variable valve control is presented. The valve control makes possible to completely hold closed at least the inlet valves and the electronic arrangement is equipped with means for detecting the air quantity, which is inducted by the engine, and with means for detecting the valve stroke. The electronic control arrangement changes the opening function in overrun operation starting from the fully closed inlet valves so that an opening of the inlet valves takes place and the arrangement detects the index of the valve opening at which a reaction of the air quantity detection takes place and uses this index as a reference point for determining the actual opening cross section.

Electronic device for controlling gas exchange valves of an internal combustion engine with variable opening functions

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Stuttgart, Germany

Helmut Denz