ARRANGEMENT FOR COOLING A ROTOR OF AN ELECTRIC MACHINE
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United States of America Patent
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Issued Date -
Mar 27, 2025
app pub date -
Jan 16, 2023
filing date -
Jan 16, 2023
priority date (Note) -
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status (Latency Note)
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Abstract
An assembly for cooling a rotor for an electric machine in a housing, wherein the rotor shaft is hollow and supports a coaxial drive shaft such that a radial gap is formed over the length of the rotor shaft between the inner diameter of the rotor shaft and the outer diameter of the drive shaft, wherein a first end of the rotor shaft has a dedicated stationary oil injection sleeve connected to an oil supply in the housing with which oil is injected axially into the radial gap where it is transported toward the second end of the rotor shaft. A vehicle that is or can be powered electrically, which has such an assembly, is also disclosed.
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