METHOD OF AND DEVICE FOR HYBRID ACOUSTIC SUPERCHARGING OF ENGINE Russian patent published in 2005 - IPC

FIELD: mechanical engineering.

SUBSTANCE: invention relates to intake systems of internal combustion engines. Proposed internal combustion engine contains at least one additional acoustic radiator connected with system forming amplitude-frequency characteristics of active acoustic supercharging and radiating sound into engine intake system to provide maximum gas flow pressure amplification when gas-air mixture charge gets into engine cylinder at intake, or rarefaction near exhaust valve at end of exhaust process at moment of valve closing by interference or superposition of main air flow pressure waves getting into intake system, and sound pressure created by acoustic supercharging device. To provide required effect, amplitude-frequency characteristics of sound radiator are generated by system forming amplitude-frequency characteristics of active acoustic supercharging and are supplied to radiator at preset time moment. Geometric, acoustic and other characteristics of engine intake system elements are chosen to provided maximum efficiency of supercharging at combination of characteristics of given passive elements with active acoustic radiation or by hybrid acoustic supercharging. Said supercharging device is connected with engine operation mode pickup, and active sound radiator has such location and acoustic characteristics that, in combination with characteristic of passive elements of internal combustion engine intake system at maximum supercharging effect, active acoustic radiation is formed at minimum power consumption and maximum noise protection to action of external factors, no undesirable resonance and other negative phenomena reducing efficiency of supercharging are provided. Active acoustic radiator can radiate sound into intake manifold through additional pipeline with characteristics required for maximum efficiency of supercharging.

EFFECT: improved efficiency of supercharging.

4 cl, 3 dwg