A compressor like unit which can be attached to an internal combustion engine controls the amount of the air mass that passes through its cylinder to the internal combustion engine based on the engine load condition requirement at a given time replacing this way the throttle device function and creating thus a throttle-less internal combustion engine. The compressor can be built in different ways and can function as one or multiple units attached directly to the engine through its crankshaft or a gear box or by other means.