Electric propulsion units

Details Electric propulsion units Electric propulsion units

2007-03-06

2007-03-06

Swinehart, Ed (Department: 3617)

Marine propulsion

Electric drive for propelling means

Reexamination Certificate

active

10381064

ABSTRACT:
A propulsion unit for propelling a waterborne vessel includes an electric motor arranged to provide propulsion, and a housing arranged to contain the motor. The interior of the housing is maintained at an increased pressure of above roughly 2 bar to increase the cooling effect of a cooling gas maintained therein. An end region of the housing is provided with a heat exchange mechanism arranged to cool a cooling gas passing thereover. The heat exchange mechanism is associated with the housing such that, in use, water surrounding the housing absorbs heat therefrom.

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