| 摘要 |
<p>PURPOSE:To increase an inertia effect by gathering independent air intake passages for respective cylinder groups and connecting them to gathered air intake passages for the cylinder groups, and providing at positions which are at an equal distance from the air intake ports of respective cylinders, connecting passages connecting independent air intake passages, and control valves at connecting passages. CONSTITUTION:A plurality of independent air intake passages 7 are brought together at every cylinder group GF, GR and connected to gathered air intake passages 8, 8, and respective connection holes 10 which are opened at positions that are at equal distance from air intake ports 6, are provided, and connection is made by means of connecting passages provided with opening/closing valves 11 at center portions. At an engine 1 low speed rotation sphere, opening/closing valves 11 are closed, and the gathered portion of mutually gathered air intake passages 8, 8 at every cylinder group GF, GR becomes the turning-over portion of air intake pressure waves, and resonance synchronization is generated, and air intake is supercharged due to this resonance effect. At an engine 1 high speed rotation sphere, opening/closing valves 11 are opened, and as respective cylinder groups GF, GR are connected by means of connecting passages 9, inertia synchronization that turns these connecting passages 9 into the turning-over portion of air intake pressure waves is generated, and the filling efficiency of air intake can be increase due to this inertia effect.</p> |
