Exhaust system for motorcycle
AssigneeKawasaki Jukogyo Kabushiki Kaisha
InventorsMakoto Momosaki, Hisatoyo Arima
Life of this patent
Estimating the term…
Abstract
An exhaust system for a motorcycle provided with a multicylinder engine, includes an exhaust aggregating member for unifying a pair of exhaust passages, through which an exhaust gas exhausted from the engine is transported to a muffler, so as to form a single exhaust passage therein. The single exhaust passage is connected to the muffler without being merged with another exhaust passage. The exhaust system also includes an exhaust control valve incorporated into the exhaust aggregating member and capable of changing sectional area of the single exhaust passage formed in the exhaust aggregating member.
Claims15
An exhaust system for a motorcycle provided with a multicylinder engine, comprising:
- an exhaust aggregating member for unifying a pair of exhaust passages so as to form a single exhaust passage in the exhaust aggregating member, an exhaust gas exhausted from the engine capable of being transported through the exhaust aggregating member to a muffler, the single exhaust passage being connected to the muffler without being merged with another exhaust passage;
- an exhaust control valve incorporated into the exhaust aggregating member and capable of changing a sectional area of the single exhaust passage formed in the exhaust aggregating member;
- and
- a common partition wall disposed at an upstream side with respect to the exhaust aggregating member so as to separate the pair of exhaust passages from each other, a connecting hole being formed through the common partition wall at a position apart from a downstream end of the common partition wall so that the pair of exhaust passages communicate with each other through the connecting hole.
An exhaust system for a motorcycle provided with a multicylinder engine, comprising:
- a plurality of upstream-side exhaust pipes disposed upstream with respect to a flowing direction of an exhaust from the engine;
- a single downstream-side exhaust pipe disposed downstream with respect to the flowing direction;
- an exhaust aggregating pipe disposed between the upstream-side exhaust pipes and the downstream-side exhaust pipe, the exhaust aggregating pipe being separately formed from the downstream-side exhaust pipe and connected to the downstream-side exhaust pipe, the exhaust aggregating pipe being tapered in the flowing direction so that the exhaust aggregating pipe has a smaller diameter as its downstream portion than a diameter at its upstream portion;
- and
- an exhaust control valve incorporated into the exhaust aggregating pipe at the downstream portion of the exhaust aggregating pipe.
Dependencies are inferred from the claim text.