| 摘要 |
Exhaust gases can bypass a turbocharger (10) to reduce its speed, but energy in the gases is then lost. A brake for a turbocharger can be implemented using at least one rotor (30) driven by the turbocharger rotatable shaft (15) and at least one stator (40). Either the rotor or stator are magnetic, the other being ferrous, such that rotation of the shaft induces eddy currents in the ferrous part, thereby extracting energy from the shaft. The magnetic field experienced by the ferrous part can be adjusted in response to an input parameter to control the level of braking.
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