In another development, "LiquidPiston ... invent[ed] a new optimized thermodynamic cycle and a rotary engine platform. A thermodynamic cycle determines how much of the energy contained in the fuel can be converted into useful work output, with the balance being wasted as heat."<ref>https://www.engadget.com/liquidpiston-x-engines-145559065.html</ref> | In another development, "LiquidPiston ... invent[ed] a new optimized thermodynamic cycle and a rotary engine platform. A thermodynamic cycle determines how much of the energy contained in the fuel can be converted into useful work output, with the balance being wasted as heat."<ref>https://www.engadget.com/liquidpiston-x-engines-145559065.html</ref> |