Patent attributes
To improve an air bypass device in bypass air flow and designing freedom, a locking stepped part 3, a bush inserting hole 4, and a valve body drive mechanism inserting hole 5 are provided above an upper end 2a of a valve body guiding hole 2 of an air control valve main body 1, an air flow-in hole 6 is provided below a lower end 2b of the valve body guiding hole 2, and an inner peripheral wall 2c of the valve body guiding hole 2 includes a plurality of air control grooves 7a . . . extending downwardly from the locking stepped part 3 and being closed by an annular bush 11 on the locking stepped part 3 to form independent air distribution chambers 12a . . . , which are connected to intake passages 8b1 . . . at the downstream side from the respective throttle valves of multiple throttle bodies T1 . . . through bypass air passages 15a . . . .
