| 摘要 |
An exhaust fume turbocharger for an internal combustion engine comprises a compressor and a turbine. A compressor wheel is rotatably mounted in the compressor and a turbine wheel is rotatably mounted in the turbine. The compressor wheel is mechanically connected to the turbine wheel by a rotatably mounted turboshaft. The compressor wheel is connected to the turboshaft by a fastening element and the exhaust fume turbocharger comprises a system for sensing the rotational speed of the turboshaft. The arrangement for sensing the rotational speed is arranged at the end of the turboshaft on the side of the compressor with an element for varying a magnetic field between the compressor wheel and the fastening element. The magnetic field is varied depending on the rotation of the turboshaft and a sensor element is arranged in the proximity of the element for varying the magnetic field for sensing the variation in the magnetic field and converting it into electrical signals.
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