To expand the range of an applicable scope of shared parts, reducing costs and further make an integrated throttle body compact in an array direction of cylinders as well as enabling, by adopting a simple structure, a variety of output controls depending on a status of use of an object driven by a multicylinder internal combustion engine in the multicylinder internal combustion engine equipped with throttle valves that opens and closes by an electric motor.
The multicylinder internal combustion engine E is equipped with a given number of cylinders C1 to C4, the integrated throttle body 11 comprising throttle bodies 111 to 114 formed with air intake passages 121 to 124, and throttle valves 131 to 134. Each of the throttle valves 131 to 134 opens and closes by the electric motors 161 to 164 installed independently of one another for each of the throttle valves 131 to 134. The air intake ports 61 to 64 of first and fourth throttle valves C1, C4 are formed so as to approach a central plane P2 in an array direction A1 as proceeding to their inlets 61b to 64b.
TSUKUI TAKAAKI
HOTSUTA KAZUHITO
Nakamura Kun
Mitsuharu Oda
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