Importance

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Abstract

Various embodiments of the present invention are directed toward a linear combustion engine, comprising: a cylinder having a cylinder wall, the cylinder including a combustion section disposed in a lower portion of the cylinder; a piston assemblies adapted to move linearly within the cylinder, the piston assembly located above the combustion section; a driver section disposed in an upper portion of the cylinder, the driver section comprising a compression mechanism that directly provides at least some compression work during a compression stroke of the engine; and a linear electromagnetic machine adapted to directly convert kinetic energy of the piston assembly into electrical energy, and adapted to directly convert electrical energy into kinetic energy of the piston assembly for providing compression work during the compression stroke, wherein the linear electromagnetic machine is above the upper end of the cylinder; wherein the engine includes a variable expansion ratio greater than 50:1.

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First Claim