Sliding friction site are minimized by the use of a rolling ball piston. Sliding friction still exists at the ball/cylinder wall contact, but it minimized by special material selection and possibly local lubrication. The use of an eccentric ball track allows tailoring of the chamber volume vs time to optimize the cycle from a thermodynamic and chemical kinetics stand point. The only requirement is that the ball return to the starting radius at TDC before intake. For example expansion/exhaust stroke length can be made different than for intake/compression for more exhaust energy recovery, or the combustion can be held at constant volume for a certain period. Multicylinder rotor can be implemented. Instead of 4 stroke, 8,12 or more stroke can be transverse in a single revolution. This effectively multiplies the power out put proportionally if the stroke is maintain constant. The use of many ball pistons, which undergo the four strokes in clocked fashion, result in smooth power delivery and small netoscillatory forces, the total ball inertial forces are automatically balanced by symmetry if numbers of ball is even. CONSTRUCTION OF WANKLE TWO STROKE ROTATY BALLPISTON ENGINE The components of this engine are as 1 - rotary piston 2 - rotary cylinder
Sliding friction site are minimized by the use of a rolling ball piston. Sliding friction still exists at the ball/cylinder wall contact, but it minimized by special material selection and possibly local lubrication. The use of an eccentric ball track allows tailoring of the chamber volume vs time to optimize the cycle from a thermodynamic and chemical kinetics stand point. The only requirement is that the ball return to the starting radius at TDC before intake. For example expansion/exhaust stroke length can be made different than for intake/compression for more exhaust energy recovery, or the combustion can be held at constant volume for a certain period. Multicylinder rotor can be implemented. Instead of 4 stroke, 8,12 or more stroke can be transverse in a single revolution. This effectively multiplies the power out put proportionally if the stroke is maintain constant. The use of many ball pistons, which undergo the four strokes in clocked fashion, result in smooth power delivery and small netoscillatory forces, the total ball inertial forces are automatically balanced by symmetry if numbers of ball is even. CONSTRUCTION OF WANKLE TWO STROKE ROTATY BALLPISTON ENGINE The components of this engine are as 1 - rotary piston 2 - rotary cylinder
178672651-ball-piston-engine.docx