Abstract: The invention concerns a stator of an electric rotating machine, the stator comprising a housing, a stator core (1), windings, and a distribution ring (2), the stator core (1) having inner and outer (11) longitudinal grooves, the outer longitudinal grooves (11) and the housing forming axial cooling channels configured to channel a coolant; the windings being located within the inner longitudinal grooves and forming at each end of the stator core (1) protruding windings ends, the distribution ring (2) being contiguous to the stator core (1) and comprising recesses (21) extending the outer longitudinal grooves (11), the recesses (21) being configured to guide the coolant from the outer longitudinal grooves (11) towards the protruding windings ends, such that the coolant flows over the protruding windings ends under the effect of gravity and/or due to the pressure of the coolant to cool the protruding windings ends.

Abstract: Transmission systems and methods are for a marine propulsion device having an internal combustion engine that drives a propulsor. An input shaft is driven into rotation at a non-zero first rotational speed by the internal combustion engine. An output shaft drives the propulsor into rotation at a non-zero second rotational speed. A planetary gearset transfers power from the input shaft to the output shaft. A band brake is on the planetary gearset. Actuation of the band brake effects a gear change in the planetary gearset. A band brake actuator actuates the band brake to effect the gear change. A controller controls the band brake actuator. Based upon one or more operational characteristics of the marine propulsion device the controller is programmed to control the band brake actuator so that the second rotational speed is less than the first rotational speed.

Abstract: Transmission systems and methods are for a marine propulsion device having an internal combustion engine that drives a propulsor. An input shaft is driven into rotation at a non-zero first rotational speed by the internal combustion engine. An output shaft drives the propulsor into rotation at a non-zero second rotational speed. A planetary gearset transfers power from the input shaft to the output shaft. A band brake is on the planetary gearset. Actuation of the band brake effects a gear change in the planetary gearset. A band brake actuator actuates the band brake to effect the gear change. A controller controls the band brake actuator. Based upon one or more operational characteristics of the marine propulsion device the controller is programmed to control the band brake actuator so that the second rotational speed is less than the first rotational speed.

Abstract: A propulsion system may include an electric machine and a gear set that may be operatively connected with the electric machine. A crank shaft may extend through the electric machine and the gear set. A battery array may be disposed around the electric machine and the gear set.

Abstract: Transmission systems and methods are for a marine propulsion device having an internal combustion engine that drives a propulsor. An input shaft is driven into rotation at a non-zero first rotational speed by the internal combustion engine. An output shaft drives the propulsor into rotation at a non-zero second rotational speed. A planetary gearset transfers power from the input shaft to the output shaft. A band brake is on the planetary gearset. Actuation of the band brake effects a gear change in the planetary gearset. A band brake actuator actuates the band brake to effect the gear change. A controller controls the band brake actuator. Based upon one or more operational characteristics of the marine propulsion device the controller is programmed to control the band brake actuator so that the second rotational speed is less than the first rotational speed.

Abstract: A marine transmission includes a synchronizer on a counter rotating shaft to shift into a high speed gear. The synchronizer includes friction surfaces on both sides of the gear body for the high speed gear. The high speed gear mesh is helical and generates axial force that enhances the torque carrying capacity of synchronizing friction surfaces, thereby enabling the shifting into the high speed gear without torque interrupt.

Abstract: A band brake actuator is for actuating a band brake on a planetary gearset. The band brake actuator comprises a actuator shaft; an output finger; and a linkage assembly. The linkage assembly connects the actuator shaft to the output finger such that rotation of the actuator shaft in a first rotation direction causes the output finger to engage the band brake on the planetary gearset, and such that rotation of the actuator shaft in an opposite, second rotation direction causes the output finger to disengage the band brake from the planetary gearset. Engagement of the band brake and the planetary gearset shifts the planetary gearset into one of a forward and a reverse gear and wherein disengagement of the band brake and the planetary gearset shifts the planetary gearset into a neutral gear.

Abstract: A transmission is for a marine propulsion device having an internal combustion engine that drives a propulsor for propelling a marine vessel in water. An input shaft is driven into rotation by the engine. An output shaft drives the propulsor into rotation. A forward planetary gearset that connects the input shaft to the output shaft so as to drive the output shaft into forward rotation. A reverse planetary gearset that connects the input shaft to the output shaft so as to drive the output shaft into reverse rotation. A forward brake engages the forward planetary gearset in a forward gear wherein the forward planetary gearset drives the output shaft into the forward rotation. A reverse brake engages the reverse planetary gearset in a reverse gear wherein the reverse planetary gearset drives the output shaft into the reverse rotation.

Abstract: A propulsion system may include an electric machine and a gear set that may be operatively connected with the electric machine. A crank shaft may extend through the electric machine and the gear set. A battery array may be disposed around the electric machine and the gear set.

Abstract: A transmission is for an outboard marine engine. The transmission comprises a rotatable input shaft that is rotated by an internal combustion engine, a rotatable output shaft that powers a propulsor, a forward gear that causes forward rotation of the output shaft and propulsor, a reverse gear that causes reverse rotation of the output shaft and propulsor, a clutch that is movable between a forward clutch position wherein the forward gear causes the forward rotation of the output shaft and propulsor and a reverse clutch position wherein the reverse gear causes the reverse rotation of the output shaft and propulsor, and an internal ring gear that couples the output shaft to one of the forward gear and the reverse gear.

Abstract: A marine transmission includes a synchronizer on a counter rotating shaft to shift into a high speed gear. The synchronizer includes friction surfaces on both sides of the gear body for the high speed gear. The high speed gear mesh is helical and generates axial force that enhances the torque carrying capacity of synchronizing friction surfaces, thereby enabling the shifting into the high speed gear without torque interrupt.