The present invention relates to a structural arrangement for a stationary internal combustion engine for machines or vehicles (universal), which can use various types of fuel. More specifically, the present invention relates to an internal combustion engine with improved combustion efficiency, improved thermodynamic efficiency, reduced dimensions, an improved power-to-weight ratio that exceeds that of aircraft turbine engines using the Brayton thermodynamic cycle, and up to three times less fuel consumption and gas emissions into the environment.

A compressor includes an assembly with a case body defining a chamber, a shaft defining a rotational axis, a ring piston positioned within the chamber, a rotor assembly positioned within the ring piston, the rotor assembly being mounted on the shaft, and a pair of opposed compression vanes, each compression vane having a seal component with a surface that matches an outer curvature of the ring piston to form a continuous surface seal between the seal component and the ring piston as the rotor assembly and the ring piston rotate about the axis of the shaft, the position of the continuous surface seals in the chamber defining a first sub-chamber and a second sub-chamber between the surface seals, the case body further including an inlet port and an exhaust port for each sub-chamber.