Exhaust coupling assembly for a marine stern drive

Details Exhaust coupling assembly for a marine stern drive Exhaust coupling assembly for a marine stern drive

F - Mech Eng,Light,Heat,Weapons

01

N

115/12, 172/28,

F01N 3/00 (2006.01) F01N 13/08 (2010.01) F01N 13/12 (2010.01) B63H 21/32 (2006.01) F02B 61/04 (2006.01)

Patent

CA 1085236

Abstract of the Disclosure A marine stern drive includes an inboard engine having an exhaust passageway means connected to an outboard drive unit having an exhaust passageway means. A transom bracket assembly positioned between the engine and the drive unit permits vertical pivoting of the drive unit for steering and horizontal pivoting of the drive unit for trimming. The improvement includes a first exhaust pipe connected to the inboard engine and a second exhaust pipe connecting to the drive unit. The first exhaust pipe extends outward through the transom of the boat and has an open and position centered on and adjacent the vertical pivot axis and below the vertical pivot axis. The second exhaust pipe extends towards and ends in alignment with the end position of the first exhaust pipe to form an interface which includes an opening between the pipe ends.

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