Robert Boschgmbh

Dirk Eichel

Dirk Hofmann

Uwe Kassner

Stefan Leidich

Alex Grossmann

Remigius Has

Jochen Laubender

Klaus Lerchenmueller

Bernhard Opitz

Oliver Krayl

Jens Strobel

Juergen Seidel

Werner Soergel

Ralf Ameling

Juergen Wendt

Bassem Baffoun

Hermann Aichele

Jürgen Seidel

A system for detecting a rotational speed of a turbocharger includes: a rotational speed sensor unit which includes a radar transmitter for emitting radar waves and a radar receiver for receiving the radar waves and which is designed to detect radar waves reflected by a machine element of the turbocharger and to provide them as a measuring signal; and an evaluation unit which is coupled to the rotational speed sensor unit and is designed to check whether the reflected radar waves are detectable by the radar receiver based on a predetermined criterion and to ascertain the rotational speed of the turbocharger based on an evaluation of the measuring signal.

System and method for detecting a rotational speed of a turbocharger

A method is described for determining information about a rotational speed of a compressor, in particular a turbocharger, by providing a measuring signal, in particular a microwave measuring signal, which is directed at a compressor impeller of the compressor, so that the measuring signal is reflected on revolving blades of the compressor impeller, detecting the measuring signal reflected by one or more blades, and determining the information about the rotational speed as a function of the reflected measuring signal.

Method and device for determining one or more rotational speeds of a turbocharging device, in particular for an internal combustion engine

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Bietigheim-Bissingen, Germany

Dirk Eichel