Fundamental hardware differences between a 4-stroke piston and a Wankel rotary

• The Rotor replaces the piston engine's piston.
• The Eccentric Shaft replaces the piston engine's crankshaft and connecting rods.
• The Rotor Housing replaces the piston engine's cylinder.
• Intake and Exhaust Ports in the housings replace valves, camshafts, rocker arms, springs, lifter rods, and timing belts.

4-Stroke Piston vs. 4-Stroke Rotary