| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a two-stage supercharging system capable of improving fuel economy in a high-speed high-load area, without having influence on drivability and exhaust gas recirculation. <P>SOLUTION: A high pressure turbocharger 6 is additionally equipped so that the high pressure stage turbocharger 6 is arranged in parallel in a plurality of units (two units in an example of Fig.), and is constituted so as to operate the plurality of units of high pressure stage turbochargers 6 in the high-speed high-load area of an engine 1. <P>COPYRIGHT: (C)2010,JPO&INPIT |
