This mini engine has only two primary moving parts

mini engineLiquidPiston is currently developing and testing the X Mini, a power-dense, low-vibration, quiet,70 cubic centimeter gasoline powered rotary four-stroke engine prototype. The compact engine (4-pound core) has only two primary moving parts. The X Mini is based on LiquidPiston’s patented thermodynamic cycle and engine architecture. To date, the X Mini prototype has demonstrated 3.5 horsepower (net indicated) at 10,000 RPM and the ability to run steady state with air-cooling. When mature, the engine is expected to weigh 3 pounds, produce over 5 horsepower at up to 15,000 RPM, and be over 30 percent smaller and lighter than comparable four-stroke piston engines.

The X Mini prototype demonstrates that LiquidPiston’s innovative engine technology can scale down in size – prior prototypes focused on 40 and 70 HP designs – and is multi-fuel capable – able to run on gasoline (spark ignition), in addition to previously demonstrated diesel and JP-8 (compression ignition). The X Mini will enable many small engine applications to be smaller, lighter, and quieter, including hand-held power equipment, lawn and garden equipment, portable generators, mopeds, unmanned aerial vehicles, robotics, marine power, range extenders, and auxiliary power units for boats, aviation and other vehicles. The engine’s improved noise, vibration and harshness (NVH) characteristics will also increase product performance, enhance operator comfort and prolong application life.

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