Intake system

An intake system that takes air through at least one air inlet duct extending from an air cleaner case, the system comprising

• at least one vortex generator that causes a flow of intake air inside the air inlet duct to rotate around an axis of the air inlet duct,
• the air inlet duct has a distal end portion provided with an intake opening that takes the intake air into the air inlet duct,
• the vortex generator is disposed at the intake opening,
• the intake system is mounted in a saddle-ride vehicle,
• the air inlet duct extends outward in a vehicle width direction from the air cleaner case,
• the vortex generator includes:
• an inlet aperture communicating with the intake opening;
• and a guide extending forward from the inlet aperture,
• the inlet aperture opens toward one side of upper and lower sides, and
• the guide includes:
• a first guide wall extending in a vehicle front-rear direction at the one side relative to the inlet aperture;
• and a second guide wall connecting a rear end of the first guide wall to a rear end portion of the inlet aperture.