Alexander Gorshkov, a designer from Penza, has developed a piston internal combustion engine with a split working cycle, in which compression and the power stroke are performed in different cylinders. The unit weighs 3.2 kg, produces 25 hp, and is aimed at small aviation, UAVs, and hybrid transport.
The design is based on a combination of a compressor and an expander through a common crankshaft and a receiver with a pre-compressed fuel mixture. Ignition occurs in the intake channel using a glow plug, after which combustion products enter the working cylinder.
This approach translates the process into an isobaric mode and reduces shock loads compared to the classic Otto cycle.
The cylinders are made according to a star scheme and operate alternately: some compress the mixture, others provide the power stroke. The pistons are connected to a common crankpin through a cage, the position of which is stabilized by auxiliary cranks. This reduces distortions and evens out the operation of the units.
Among the stated effects are a reduction in the load on the crankshaft, simplification of the design, and a reduction in weight.
