AIR-INTAKE STRUCTURE FOR MOTOR-SCOOTER VEHICLE

摘要

PROBLEM TO BE SOLVED: To increase the engine power of a motor-scooter vehicle by preventing the intake of dust into its air cleaner and decreasing the air-intake resistance thereof. SOLUTION: In order to lead intake air to an air cleaner 37 supported an the upper part of a transmission case 30 of a power unit P, there are provided an intake chamber 40 facing an opening 132 formed in a side cover 13 of the vehicle body, and an intake duct 38 connected at its front end to the intake chamber 40 by means of a boot 39 and at its rear end to the inlet part of the air cleaner 37. The intake chamber 40 is adapted to supply intake air inducted through an inlet opening 521 at a lower position to the intake duct 38 at a higher position. The intake duct 38 is formed with no sharp bends so as to be arranged with its minimum length in the back and forth directions of the vehicle body.