The Birotary Engine – Key Technical Solution Advantages

• Large cross-section area for intake and exhaust ports
• High engine induction efficiency and compression ratio
• Seal surface contact and absence of inertia forces applied on sealing
• High RPM combined with high torque resulting in high specific output
• Short stroke design results in acceptable average piston speed even in high RPM mode of operation
• Design of sleeve valve train system used in birotary engine is simpler than traditionally used poppet valves in traditional internal combustion engines
• Mutual counterbalancing of rotating parts resulting in favorable NVH parameters (Noise, Vibration, and Harshness)
• Short axial dimension resulting in space for external devices (gearbox, electric motor, etc.)

Target Markets – User Benefits

Birotary Engine Type A3 has been developed for small sport airplanes (class LSA, S-LSA, ELSA, ULL, GA and Experimental) and for Unmanned Aerial Vehicles (UAV).

• High specific power output, especially compare to engine displacement and size
• Low weight
• Compact engine size with small size dimensions and cylindrical shape
• Minimum vibrations
• Design allows to operate the engine in very high RPM mode
• Simple maintenance, longer TBO periods, lower maintenance costs