| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To compatibly attain high supercharging and a great amount of EGR in a wide operation range to take exhaust emission measure and improve output/fuel economy in a multiple cylinder engine provided with a turbocharger. <P>SOLUTION: This engine is provided with exhaust manifolds 9a, 9b divided into cylinder groups of which exhaust strokes do not overlap, intake manifolds 3a, 3b divided into cylinder groups of which intake strokes do not overlap, means 23a, 23b preventing reverse flow of exhaust pulse in a merging part of the exhaust manifolds, resonance pipes 40a, 40b connecting a branch part 41 of a intake air passage 2 and a collecting part inlet of each intake manifold as a means amplifying intake pulsation and controlling phase of the intake pulsation, EGR passages 36a, 36b connecting the resonance pipes and the exhaust manifolds in a relation of same cylinder group, and means 50, 51 varying resonance rotation speed of an intake system. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
