Abstract: A cast piston, for an internal combustion engine or pump has an integral coolant ring gallery, with localized extensions, to achieve a coolant interchange with the gallery upon piston reciprocation. At least a portion of an extension lies generally parallel to the longitudinal piston axis and towards an upper end of the piston adjacent the working fluid. This provides an attendant increase in surface area exposed to coolant allowing either a decrease in operational piston temperature or an increase in allowable heat flow into the piston from a working fluid.

Abstract: An aircraft engine mounting installation uses an overall partially focalized or convergent mount configuration with a combination of individual, or paired, axial mounts and individual, or paired, inclined mounts. When paired, the axial mount axes are parallel to the engine thrust axis. The respective axes of the axial and inclined mounts, or planes through paired similar mounts, converge at, or ahead of, the engine center of gravity in order to brace engine weight, engine thrust and torque reaction loads, without undue complexity in mount geometry.

Abstract: An inverted aircraft internal combustion engine, such as a two-stroke compression-ignition (diesel) engine, incorporates a lubricant (oil) and/or coolant heat exchanger mounted upon the engine below an exposed crankshaft and/or enclosed crankshaft housing and adjacent a propeller mounting location.

Abstract: An aircraft engine mounting installation uses an overall partially focalized or convergent mount configuration with a combination of individual, or paired, axial mounts and individual, or paired, inclined mounts. When paired, the axial mount axes are parallel to the engine thrust axis. The respective axes of the axial and inclined mounts, or planes through paired similar mounts, converge at, or ahead of, the engine center of gravity in order to brace engine weight, engine thrust and torque reaction loads, without undue complexity in mount geometry.

Abstract: An aircraft engine mounting installation uses an overall partially focalized or convergent mount configuration with a combination of individual, or paired, axial mounts and individual, or paired, inclined mounts. When paired, the axial mount axes are parallel to the engine thrust axis. The respective axes of the axial and inclined mounts, or planes through paired similar mounts, converge at, or ahead of, the engine center of gravity in order to brace engine weight, engine thrust and torque reaction loads, without undue complexity in mount geometry.

Abstract: An inverted aircraft internal combustion engine, such as a two-stroke, compression-ignition diesel engine, includes a wet sump lubrication system with a combined under-slung camshaft or valve gear cover and sump housing, as well as a turbocharger located above the wet sump operational oil level and lubricated from the wet sump system with gravity return to the sump.

Abstract: A piston and connecting rod assembly configured for high compressive loading, or arduous duty cycle, such as in a two-stroke compression-ignition (diesel) internal combustion engine incorporates a spherical or cylindrical bearing between the piston and the connecting rod small end. A closed unitary retaining ring with a threaded circumference securing the piston and connecting rod together. The retaining ring has a profiled aperture or slot to allow installation by passage over the connecting rod.

Abstract: In a piston and connecting rod assembly, for an internal combustion engine with a spherical connecting rod small-end entrained in a hollow piston body by a retention ring, a chamber serving as a localized reservoir for lubricant and/or coolant (oil) is incorporated in the underside of a piston crown along with passages or grooves communicating between the reservoir and a coolant gallery in the piston crown for continuous interchange of lubricant (such as oil) between gallery and reservoir and then lubricant return, over small end (upper and lower) part-spherical bearing surfaces to the retention ring and through lubricant passages in the ring to an engine crankcase, thereby affording an overall circulatory, lubricant feed and drainage path.