Caterpillar Inc.

Christopher J Watson

Carlos Eduardo Nino Baron

Kevin M Moloney

A rotary electric machine includes a stator, a rotor, a plurality of coils and a plurality of spacers. The stator has a stator body and a plurality of stator poles. Each stator pole has a pair of oppositely facing side surfaces. The rotor is positioned within the stator and has a plurality of rotor poles. One coil is disposed about each stator pole. The spacers are disposed between one coil and at least one of an inner circumferential surface of the stator body and the side surfaces of the stator body to define a fluid flow opening between the coil and the stator.

Cooling system for a rotary electric machine

A duct from near the top of the skirt of a two-piece piston carries lubricant to the skirt pin bore, on each side of the skirt, and lubricates the pin joint. The skirt is provided with a lubricant passage, such as from a shaker tray, to the pin bore on each side of the pin joint of the skirt, piston crown struts, and wrist pin on which a piston connecting rod is joined. Fluid sprayed against the crown descends onto the skirt and some passes through the above-mentioned lubricant ducts or passages for direct, continuous lubrication of the pin joint.

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Washington, IL, United States of America

Christopher J Watson