Straddle-type vehicle with belt type continuously variable transmission having resin-block-type belt
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorYousuke Ishida
Life of this patent
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Abstract
A noise suppressor for a straddle-type vehicle provided with a belt type continuously variable transmission having a resin-block-type belt. A portion of an air passage for guiding air to a belt chamber is formed in a closed casing. The closed casing includes a dish-shaped first casing member and a dish-shaped second casing member. An inlet port and an exhaust port are formed in the second casing member. Partition walls in the form of curved plate pieces are formed in the first casing and second casing members. Air flow paths formed by the partition walls are U-shaped, thereby forming a serpentine flow.
Claims14
A straddle-type vehicle comprising:
- an engine unit having an engine, a continuously variable transmission (CVT) having a resin-block belt, and a transmission casing defining a belt chamber for accommodating the CVT;
- and
- an air passage for guiding air into or venting air out of the belt chamber;
- wherein the air passage includes
- a closed casing, in which an inlet port and an exhaust port are formed, and
- at least one first partition projecting from a first inner wall of the closed casing toward an inside of the closed casing and having at least one second partition projecting in a direction intersecting with the at least one first partition;
- flow paths are formed on each side of the intersecting partitions, wherein flow directions of the flow paths are opposite from each other;
- and
- the flow paths form a curved flow path that runs from the inlet port to the exhaust port in the closed casing.
Dependencies are inferred from the claim text.