Robert Bosch G.m.b.h.

Ernst Wild

Helmut Denz

Lutz Reuschenbach

Georg Mallebrein

Werner Hess

Andreas Blumenstock

Werner Mezger

Christian Koehler

Kristina Eberle

Ulrich Steinbrenner

Nikolaus Benninger

Michael Oder

Manfred Pfitz

Juergen Pantring

Roland Herynek

Dieter Volz

Gudrun Menrad

Sabine Wegener

Mirjam Steger

Hong Zhang

Eberhard Schnaibel

Lothar Raff

Albrecht Clement

Detlef Heinrich

Dieter Mayer

Rainer Hild

Harald Von Hofmann

Manfred Hellmann

Andreas Roth

Dirk Samuelsen

Klaus Ries-Muller

Karl Ott

Gerhard Schneider

Wolfgang Hermsen

Martin Zechnall

Klaus Hirschmann

Helmut Janetzke

Wolfgang Wagner

Rudi Mayer

Andrea Steiger-Pischke

Axel Stuber

Christian Tischer

Peter Kaltenbrunn

Hendrik Koerner

Oliver Schlesiger

Klaus Joos

Klaus Ries-Mueller

Klemens Grieser

Erwin Krimmer

Udo Diehl

Stefan Reimer

Karsten Mischker

Volker Beuche

Wolfgang Schulz

Bernd Rosenau

Christian Grosse

Hermann Gaessler

Ruediger Weiss

Juergen Schiemann

Gunther Plapp

Manfred Mezger

Tilman Miehle

Rainer Walter

Helmut G Schwegler

Karl-Heinz Senger

Holger Jessen

Andreas Baumann

Michael Drung

Rolf Daumer

Rainer Frank

Matthias Kuesell

Torsten Bauer

Stefan Keller

Wolfgang Krampe

Winfried Kuhnt

Claus Ruppmann

Manfred W Meissner

Frank Blischke

Manfred Zimmermann

Hans Hillner

Werner Kind

Ulrich Mayer

Eugen Joos

Michael Nicolaou

Bernd Roos

Juergen Ulm

Michael Westerdorf

Gerard Melchior

Bernhard Schray

Klaus Boettcher

Hans-Peter Stumm

Martin Person

Gunter Rosenzopf

Joachim Heimes

Lilian Matischok

Werner Jaksch

Johannes-Dieter Wichterich

Ekkehard Feldmann

Vera Lehner

Miriam Steger

A procedure for checking the functionality of a tank ventilation valve of a tank ventilation system for a motor vehicle with a fuel tank, an adsorbing filter, which is connected to the fuel tank over a filter line and which provides a vent pipe, and with the tank ventilation valve, which is connected to the inlet manifold of a combustion engine that provides an actuator for the idle mode over valve pipes, is thereby characterized, in that the mass flow that flows through the tank ventilation valve in the idle mode of the combustion engine and the mass flow that flows through the actuator for the idle mode are detected and in that the functionality of the tank ventilation valve is deduced from a variation of the actuator for the idle mode.

Procedure and device for checking the functionality of a tank ventilation valve

A method and a device for operating at least one supercharger of an internal combustion engine is described, the actuating signal for at least one actuating element of the supercharger (waste gate actuator, electrical auxiliary compressor) being generated as a function of the exhaust gas volume flow in the exhaust tract of the internal combustion engine.

Method and device for operating at least one turbocharger on an internal combustion engine

In an internal combustion engine the fuel is injected into an intake manifold. A quantity characterizing the injection quantity is a function of a predicted quantity which characterizes a predicted air charge. A setpoint quantity is used for determining the predicted quantity which characterizes a setpoint air charge.

Method for operating an internal combustion engine

In operation of an internal combustion engine, an air filling (rl) in a combustion chamber is ascertained, taking into account a pressure (ps) in an intake conduit. It is proposed that the air filling (rl) be ascertained on the basis of a model (A), which as its input variables receives an rpm (nmot) of a crankshaft and a ratio of the pressure (ps) in the intake conduit () to an ambient pressure (pu).

A method and a device for operating an internal combustion engine make it possible from the start to avoid operating states that are characterized by an increased knock tendency or an increased exhaust gas temperature. The internal combustion engine includes a compressor in an air feed of the internal combustion engine for compression of the air supplied to the internal combustion engine. The setpoint charge pressure to be generated by the compressor is limited to a maximally allowed setpoint charge pressure as a function of a temperature at the output side of the compressor.

Method and device for operating an internal combustion engine

A method and a device for operating an internal combustion engine are provided, which allow a continuous limiting of the output of the internal combustion engine upon attaining a maximally possible injection duration of an injection valve. The internal combustion engine has at least one actuator for influencing the output of the internal combustion engine and at least one injection valve for supplying fuel to the combustion engine. A maximally possible injection duration for an injection procedure of the at least one injection valve is determined. A variable characterizing the output of internal combustion engine is limited as a function of the maximally possible injection duration by corresponding adjustment of the at least one actuator.

A method for controlling the opening of at least one intake valve of a combustion chamber in a periodically working piston engine, at least one intake valve of the combustion chamber being opened during a first partial period of a working period of the piston engine for charging the combustion chamber; and at least one intake valve of the combustion chamber being opened during a second partial period of the working period, wherein the second partial period begins after the combustion of the combustion chamber charge and has no overlap with the first partial period.

Method and device for controlling the opening of an intake valve of an internal combustion engine

A method and a device for operating an internal combustion engine having exhaust-gas recirculation are provided, which make it possible to dispense with an ambient-pressure sensor. In this context, an intake-manifold pressure and an ambient pressure are modeled. The intake-manifold pressure is modeled as a function of the modeled ambient pressure. The intake-manifold pressure is also measured. The modeled intake-manifold pressure is compared to the measured intake-manifold pressure. The modeled ambient pressure is adapted as a function of the comparison result. The modeled ambient pressure is adapted only when the exhaust-gas recirculation is inactive.

Method and device for operating an internal combustion engine having exhaust-gas recirculation

The invention is directed to a method and an arrangement for controlling an internal combustion engine () having a compressor () for compressing the air drawn in by suction by the engine (). The compressor is especially an exhaust-gas turbocharger. With the method and arrangement, a requirement-proper and timely opening of a valve () of an air path () is ensured for avoiding compressor pumping. The air path () bypasses the compressor (). The valve () of the air path (), which bypasses the compressor (), is controlled in dependence upon at least one pregiven characteristic line () of a compressor characteristic field.

Method and arrangement for controlling an internal combustion engine

A method and a device are proposed for controlling and/or diagnosing a control system influencing a mass flow. In this context, a correction value is calculated, which corrects the controlling, or is evaluated for diagnostic purposes. The correction value, in this context, is derived from the line resistance of the mass flow line.

Method and device for controlling and/or diagnosing a control system that influences a mass flow

A method and an arrangement are suggested for determining a temperature quantity in a mass flow line which includes a throttle position and to which an additional gas mass flow is supplied after the throttle position. The temperature ahead of the throttle position is determined on the basis of the portion of the additional gas mass flow in the total flow in dependence upon the temperature of the mixture of the two gas mass flows as well as the temperature of the introduced gas mass flow.

Method and device for measuring a temperature variable in a mass flow pipe

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 system for ensuring reliable operation of a brake booster system for a vehicle braking system in which a pressure value prevailing in the brake pressure reservoir of the brake booster system is sensed by a pressure sensor. An error occurring in the brake booster system is detected by evaluating the sensed pressure value prevailing in the brake pressure reservoir as a function of the actuation of the brake actuating mechanism. The brake booster system includes a diagnostic circuit that is connected to the pressure sensor and to the brake actuating mechanism.

Method for the reliable operation of a brake booster system, brake booster system, and circuit therefor for implementing the method

A method and a device for controlling the drive unit of a vehicle are provided, in which, in addition to the selection variable for an output variable of the drive unit, another setpoint variable representing the required dynamic setting of the output variable is preselected. The manipulated variable of the drive unit to be influenced is selected on the basis of the selection variable and the additional setpoint variable.

Method and device for controlling the drive unit of a vehicle

A method for operating an internal combustion engine. The latter has at least one combustion, one induction pipe, and one throttle valve. From the actual position of the throttle valve, a gas charge of the combustion chamber is defined. To improve the emissions and fuel consumption characteristics of the internal combustion engine, the minimum gas pressure is measured that exists in the induction pipe assigned to the combustion chamber at the end of the intake stroke. From this gas pressure, a value is determined which more closely approximates the actual gas charge of the combustion chamber.

Method, a computer program, and a control and regulating unit for operating an internal combustion engine

Growing community of inventors

Oberriexingen, Germany

Ernst Wild