Patent ID: 6713934
Filing Date: 2004-03-30
Classification: F02B,H02K

Abstract:
An outboard motor having an electrical generator and integral cooling arrangement therefor, the motor including:an internal combustion engine having an engine block, a crankshaft, and a bearing that journals a portion of the crankshaft for rotation within the engine block, an electrical generator comprising: (i) a stator armature comprising a series of stacked plates formed of a material having high magnetic permeability, (ii) a heat conductive plate having substantially the same planar dimensions as the stacked plates, the heat conductive plate formed of a material having a higher heat conductivity than that of the stacked plates, the heat conductive plate abutted against one of the stacked plates; (iii) an armature coil wound around the assembly of the stacked plates of magnetic permeability and the heat conductor plate so that the heat conductive plate is an integral part of the stator armature; and (iv) a rotor coupled to the crankshaft so as to rotate therewith, the rotor having magnets that are arranged next to the stator armature; and a stator bracket formed of a material having high heat conductivity, the bracket directly attached to the engine block and the conductive plate integral with the stator armature so that the resistance heating within the stator armature is transferred through the conductive plate and the stator bracket to the engine block.