Patent attributes
A multiple throttle apparatus has a plurality of throttle valves respectively disposed at each air intake passage corresponding to each cylinder of an engine, a plurality of throttle shafts to support the plurality of throttle valves for each group, and a plurality of drive elements to respectively drive the throttle shafts. With this structure, open-close control of one group of the throttle valves and of the other group of throttle valves can be performed separately. Therefore, the combustion condition, namely the power, can adequately be controlled in accordance with the driving conditions, and fine control, even to perform ISC, is possible. In this manner, it becomes possible to obtain electronic control and fine control to a multiple throttle apparatus of an engine mounted on a motorcycle.
