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US 7,802,647 B2Granted
Motorcycle including belt type continuously variable transmission having resin block belt
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorYousuke Ishida
Life of this patent
Estimating the term…
Abstract
A noise preventing means for a motorcycle including a belt type continuously variable transmission using a resin block belt. An end of an intake duct for inducting cooling air into a belt chamber inside a transmission casing is connected to a front half part of the transmission casing. The intake duct extends upward from the transmission casing, then curves rearward, and extends rearward passing over a seat pillar. An air chamber is connected to a rear end of the intake duct. The intake duct has a curving part curving around the seat pillar.
Claims14
A motorcycle comprising:
- an engine unit including a transmission casing in which a belt chamber is provided, and a belt driven continuously variable transmission housed in the belt chamber and including a resin block belt;
- a frame member disposed more rearward than or above the transmission casing, extending in a vertical direction or obliquely upward and downward directions, and supporting at least a portion of the engine unit;
- an air passage connected to the transmission casing, and provided with an intake passage arranged to induct air into the belt chamber or an exhaust passage arranged to discharge air from the belt chamber;
- wherein
- the air passage extends rearward from the transmission casing and passes over the frame member in a side view of the motorcycle, and includes a curved portion arranged to curve around the frame member.
2 more elements
A motorcycle comprising:
- an engine unit including a transmission casing in which a belt chamber is provided, and a belt driven continuously variable transmission housed in the belt chamber and including a resin block belt;
- a frame member disposed more rearward than or above the transmission casing, extending in a vertical direction or obliquely upward and downward directions, and supporting at least a portion of the engine unit;
- an air passage connected to the transmission casing, and provided with an intake passage arranged to induct air into the belt chamber or an exhaust passage arranged to discharge air from the belt chamber;
- wherein
- the air passage extends rearward from the transmission casing and passes over the frame member in a side view of the motorcycle, and includes a curved portion arranged to curve around the frame member;
- at least a portion of the air passage is positioned outside an inner end of the frame member in a vehicle width direction in a plan view of the motorcycle;
- and
- the curved portion is positioned inside the inner end of the frame member in the vehicle width direction in the plan view of the motorcycle.
5 more elements
Dependencies are inferred from the claim text.