SADDLE-TYPE VEHICLE WITH INTERNAL COMBUSTION ENGINE AND INTAKE CONTROL DEVICE
DRIVE
November 26, 2025
Provided is a compact and protected intake control device in a case where a saddle-type vehicle internal combustion engine includes an intake control valve such as a tumble control valve in addition to a throttle valve. [0002] In an intake control device for an in-vehicle internal combustion engine including a throttle valve 81 provided in an intake passage 6 that intake air passes to a combustion chamber 38 of an internal combustion engine 3 and controlled to any given opening degree to control an intake air amount, and a tumble control valve 71 that is provided downstream of the throttle valve and that opens and closes a passage cross section of a main passage of the intake passage divided into the main passage 6A and a tumble passage 6B along a passage direction to control intake air supply to the main passage, an actuator 72 that drives the tumble control valve is positioned behind a cylinder portion 32 of the internal combustion engine, is positioned closer to a vehicle left-right center line than the intake passage in plan view, and is positioned such that at least a part thereof overlaps a main frame 21 of a vehicle body frame 2 in plan view.
Discussion in the ATmosphere