The KNOB Birotary engine is a revolutionary three-cylinder spark ignition piston engine designed to provide high efficiency and low vibration. Unlike traditional engines, the Birotary engine features a unique rotating cylinder block arranged in a “star” configuration at 120° angles. This design allows the cylinder block to rotate within a stationary case that houses the intake, exhaust ports, and spark plugs.
This innovative engine boasts a sophisticated sealing system that is protected by worldwide patents. All gathered patents are listed below.
The Birotary engine is particularly suited for ultralight airplanes and unmanned aerial vehicles (UAVs), offering a lightweight and powerful solution.
For a detailed overview of the KNOB Birotary engine concept, visit the Birotary Engine – Concept page.