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Basic Power Flow Example

As an example of power flow in reverse gear, planetary gear carrier (4) is held stationary. The sun gear (3) is driven in a clockwise direction. The planetary pinions (2) are driven counterclockwise, which in turn drives the internal ring gear (1) counter clockwise as well. See Fig 1.

Fig 1: Identifying Basic Power Flow
G00317037Courtesy of BMW OF NORTH AMERICA, INC.