| 摘要 |
<p>The supercharging method by intake oscillation in piston engine is based on a symetric and pneumatic resonance oscillation of the suction circuit (fig. 7), wherein gas masses (2, 4) determine essentially the proper vibration of the oscillating system with a plurality of masses (fig. 4) comprised of the suction circuit, oscillating symetrically. In a supercharged engine with turbo blower, the symetric resonance oscillation which is the most efficient at low engine speed is generated both by the cylinder group during its suction stroke and by the oscillating flow of the turbo blower (5). Despite of the oscillating flow which is amplified by the rotor of the blower, the compression flow is not exposed to the so feared pumping, because the suction circuit is so arranged that the undimensioned Horvath number, which clearly defines the behaviour of the compression flow of the turbo blower in an unstationnary operation, is not higher than one.</p> |
