| 摘要 |
The invention relates to an exhaust-gas turbocharger ( 1 ) for an internal combustion engine, said turbocharger comprising a device ( 26 ) for detecting the speed of the turbocharger shaft ( 5 ). The device ( 26 ) for detecting the speed comprises an element ( 21 ) for varying a magnetic field, which is located on and/or in the end ( 10 ) of the turbocharger shaft ( 5 ) that is on the compressor side, said variation of the magnetic field ( 25 ) taking place in accordance with the rotation of the turbocharger shaft ( 5 ). A sensor element ( 19 ) is provided in the vicinity of the element ( 21 ) for varying the magnetic field ( 25 ), said sensor element detecting the variation in the magnetic field and converting it into electric signals that can be evaluated.
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