To provide an intake control device for a multicylinder internal combustion engine, which is capable of controlling the variation of inertia supercharging effect for every cylinders even when distances from intake air control valves to intake valves for closing and opening independent passages are different from one another.
The distance from intake control valves 13 of independent passages 10 provided to the #1 cylinder and #4 cylinder of an internal combustion engine 1 to intake valves 7 are shorter than the distance from intake control valves 13 of independent passages 10 provided to the #2 cylinder and #3 cylinder, and the intake control valves 13 of the independent passages 10 provided to the #1 cylinder and #4 cylinder, and the intake control valves 13 of the independent passages 10 provided to the #2 cylinder and #3 cylinder are driven by common valve shafts 17 and 18, respectively. The distances L1 and L2 from opened ends 10b of the independent passages 10 with respect to a surge tank 11 to the intake control valves 13 are equal to each other.
COPYRIGHT: (C)2009,JPO&INPIT
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