Personal watercraft exhaust system

摘要

A personal watercraft has a hull having an exhaust aperture and a longitudinal centerline, a deck disposed on the hull, a straddle seat, an engine, a driveshaft operatively connected to the engine and extending rearwardly thereof, a jet propulsion system operatively connected to the driveshaft, an exhaust manifold connected to a lateral side on the engine on a first side of the longitudinal centerline, the exhaust manifold having a manifold outlet, a muffler disposed generally transversely and rearwardly of the engine, the muffler having a muffler inlet on the first side of the longitudinal axis and a muffler outlet, a first exhaust pipe connected to the manifold outlet and to the muffler inlet, and a second exhaust pipe connected to the muffler outlet and to the exhaust aperture. The second exhaust pipe extends upwardly and rearwardly from the muffler outlet, then downwardly and rearwardly to the exhaust aperture.

主权项

1. A personal watercraft comprising:
a hull having an exhaust aperture and a longitudinal centerline; a deck disposed on the hull; a straddle seat disposed on the deck; an engine connected to the hull; a driveshaft operatively connected to the engine and extending rearwardly thereof; a jet propulsion system operatively connected to the driveshaft; an exhaust manifold connected to a lateral side of the engine on a first side of the longitudinal centerline, the exhaust manifold having a manifold outlet; a muffler disposed generally transversely and rearwardly of the engine, the muffler having a muffler inlet on the first side of the longitudinal centerline, a muffler outlet on a second side of the longitudinal centerline, an inlet end, an outlet end and a central axis extending downwardly from the inlet end to the outlet end; a first exhaust pipe connected to the manifold outlet and to the muffler inlet; and a second exhaust pipe connected to the muffler outlet and to the exhaust aperture, the exhaust aperture being disposed rearwardly of the muffler on the second side of the longitudinal centerline, the second exhaust pipe extending upwardly and rearwardly from the muffler outlet, then downwardly and rearwardly to the exhaust aperture.