ELECTRONIC CONTROL THROTTLE DEVICE

Spigots (17) are respectively formed on the engine sides of intake passages (5 #1 and 5 #2 ) defined in a first throttle body (2) and intake passages (5 #3 and 5 #4 ) defined in a second throttle body (3), and the end parts of rubber joints (18) extending from individual cylinders of an engine are fitted to the corresponding spigots and are fastened and fixed thereto with hose bands (19). A gear unit (12) is disposed between both throttle bodies (2 and 3) and drives and rotates a throttle shaft (8) with a motor (13) via the gear unit to be capable of opening and closing throttle valves (10) of the cylinders. Axis lines C 2 of the spigots of the intake passages (5 #2 and 5 #3 ) positioned on both sides of the gear unit (12) are formed to have eccentricity in a direction away from each other, so that a part of the gear unit is positioned between the spigots. Thereby, attachment spaces of the rubber joints are secured without elongating the throttle bodies (2 and 3).