Robert Boschgmbh

Michael Scheidt

Thomas Bleile

Eduard Moser

Manfred Birk

Rainer Buck

Andreas Rupp

Herbert Schumacher

Peter Skala

Ulrich Rosin

Martin Schacherer

The invention relates to a method for determining the ignitability of fuel, particularly of diesel, biodiesel, gas-to-liquid or biomass-to-liquid fuel, with an unknown fuel quality for an internal combustion engine. Provision is made for the density of the fuel to be ascertained and for the ignitability to be derived from this.

Method for determining the ignitability of fuel with an unknown fuel quality

A method and a device are provided for regulating the charge pressure of an internal combustion engine having at least two exhaust gas turbochargers that set a target charge pressure rapidly and without overshooting. A first actuating element is provided with which the charge pressure of a first exhaust gas turbocharger is set, and a second actuating element is provided with which the charge pressure of a second exhaust gas turbocharger is set. Dependent on the exhaust gas back pressure prevailing in the exhaust gas channel at the output of the internal combustion engine, a first controlled variable is determined for the first actuating element, and a second controlled variable is determined for the second actuating element.

Method and device for regulating the charge pressure of an internal combustion engine

A method and a device for operating an internal combustion engine make it possible to monitor a temperature sensor or a lambda sensor in an exhaust system of the internal combustion engine for functionality in the entire operating range of the internal combustion engine. To that end, the plausibility of the signal of the temperature sensor is checked with a signal of the lambda sensor for a predetermined relationship.

Method and device for operating an internal combustion engine

A method and a device for regulating the boost pressure of an internal combustion engine having a multiflow air system, which enables both rapid regulation and limitation of the exhaust gas back pressures. The multiflow air system includes a multichannel air supply and a corresponding multichannel exhaust gas discharge, each exhaust gas channel having an exhaust gas turbocharger. A manipulated variable for a specified boost pressure to be set is determined as a function of the actual exhaust gas back pressure prevailing in the particular exhaust gas channel.

Method and device for regulating the boost pressure of an internal combustion engine

The invention is directed to a method for operating an internal combustion engine () having a compressor () which method makes possible an actualization of a pump limit of the compressor (). A pressure ratio across the compressor () is limited in dependence upon a mass flow through the compressor () by means of the pump limit in order to prevent a pumping of the compressor (). In at least one operating state of the engine (), a check is made as to whether a pumping of the compressor () occurs. The pump limit is corrected in dependence upon the test results.

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Stuttgart, Germany

Michael Scheidt