| 摘要 |
An air intake system for an internal combustion engine (1) having a plurality of cylinders (2), comprises: a cylinder head (3) formed with at least first and second intake ports (71, 72) for each cylinder (2), the first and second intake ports (71, 72) having different configurations with each other; an intake manifold (11) formed with a first collective chamber (211, 212) communicating with the first intake port (71, 72) of the each cylinder (2) and a second collective chamber (211, 212) communicating with the second intake port (71, 72) of the each cylinder (2); a common intake passage (10) disposed upstream of the first and second collective chambers (211, 212) of the intake manifold (11); and an opening/closing valve (22) provided at an inlet of the first collective chamber (211, 212) communicating with the common intake passage (10), wherein a blowby gas induction port (16a) is formed in the intake passage (10), and an exhaust reflux gas induction port (17a) is formed in the second collective chamber (211, 212) disposed above the first collective chamber (211, 212). <IMAGE> |
