Moscow-based designer Oleg Butenko has developed a design for a rotary piston engine with intermittent rotor rotation, which reduces vibrations and increases reliability. The key feature is the intermittent rotation of the rotor.
In 1 full revolution, it completes 4 cycles, and the movement is synchronized via a ratchet transmission with pawls. This design eliminates complex eccentrics and reduces vibrations.
The design includes 4 blades-pistons, fixed in pairs with a 180° offset on 2 disks. They form 4 working chambers where compression, intake, power stroke, and exhaust cycles occur simultaneously, Butenko noted. The disks are mounted on coaxial shafts, and power is taken off via a gear system.
The rotor controls the valves and ignition: it has protrusions that open the intake and exhaust, and also alternately deliver a spark to 4 spark plugs. The transmission mechanisms operate with fixed ratios.
The developer clarified that the engine is easier to manufacture and more stable in operation. The design is proposed for use not only in internal combustion engines, but also in pumps, compressors, and hydraulic drives.
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