| 摘要 |
PROBLEM TO BE SOLVED: To provide an intake device for a multi-cylinder internal combustion engine capable of suppressing variations in inertial supercharging effectiveness in each cylinder without causing an increase in the number of parts or complicating control even if passage lengths reaching an intake valve from a surge tank are uneven. SOLUTION: In this intake device, the intake passage 10 of the internal combustion engine 1 comprises an independent passage 20 arranged at each cylinder 2, and a common passage 20 with the independent passage 20 connected thereto which is used in common by mutually different cylinders. The sectional area of the passage of the independent passage 20 formed relative to the cylinder 2 having a long passage length up to the surge tank 16 from the intake valve 12 is made to be larger than that of the independent passage 30 formed relative to the cylinder 2 with a short passage length. COPYRIGHT: (C)2009,JPO&INPIT |
