Marine propulsion device air intake system

A marine propulsion device comprising a propulsion unit including a rotatably mounted propeller, and an engine drivingly connected to said propeller and including a flywheel and an air intake, a cowl assembly surrounding said engine and including a front located adjacent said air intake and a rear including an air inlet, and means for isolating incoming air from said engine and for conducting the incoming air around said engine from said air inlet to said engine air intake, said isolating and conducting means including means for defining a chamber formed in part by said front of said cowl assembly, said chamber communicating with said engine air intake, being otherwise substantially sealed from said engine, and communicating with said air inlet.

A marine propulsion device comprising a propulsion unit including a rotatably mounted propeller, and an engine drivingly connected to said propeller and including an air intake, a cowl assembly surrounding said engine and including an air inlet, an air silencer including spaced apart front and rear walls, a top wall, a silencer inlet located in said top wall adjacent said front wall, a silencer outlet located in said rear wall and commuicating with said engine air intake, and means defining a tortuous passage communicating between said silencer inlet and said silencer outlet for conducting incoming air from said silencer inlet to said silencer outlet and for draining, from said air silencer, water in the incoming air traveling from said silencer inlet to said engine intake so as to substantially prevent water entering said silencer inlet from reaching said engine air intake, said means including a baffle wall extending downwardly from said top wall intermediate said silencer inlet and said rear wall, said baffle wall extending to a point beneath said silencer outlet, whereby air entering said silencer inlet must pass downwardly between said baffle wall and said front wall, beneath said baffle wall, and upwardly between said baffle wall and said rear wall to said silencer outlet, and means for conducting air from said air inlet to said silencer inlet.