Kayoh

Significant advancements to engine design are desired for future motorcycles, automobiles, aircraft, boats. Two fundamental but persistent problems are optimum combustion and operator-friendly operation. Operator-friendly operation preferably includes consideration of vibration, vehicle handling, engine reliability, use of available fuels, mean piston speed, endurance, engine lubrication, crankshaft torque, system simplicity. This disclosure describes an innovative engine that simultaneously provides reliability, efficiency, and low or zero emissions in a single design.