Exhaust apparatus of outboard motor

Details Exhaust apparatus of outboard motor Exhaust apparatus of outboard motor

1998-06-02

2000-04-25

Avila, Stephen

Marine propulsion

Means for accomodating or moving engine fluids

Means for handling exhaust gas

440900, B63H 2132

Patent

active

060537868

ABSTRACT:
An outboard motor includes an engine holder, an engine disposed above the engine holder and the engine includes a cylinder block provided with a plurality of cylinders, a cylinder head disposed behind the cylinder block and a crankcase, a cam chain case through which said engine is mounted on the engine holder, and an exhaust apparatus operatively connected to the cylinder head. The exhaust apparatus includes an exhaust passage formed to the cam chain case, an exhaust manifold connected to the cylinder head, a water jacket formed to the exhaust manifold and another water jacket formed to the exhaust passage. The exhaust passage is formed at a portion near a central portion of the engine having most wide width in association with a lower end portion of the exhaust manifold.

REFERENCES:
patent: 5049100 (1991-09-01), Yamamoto et al.

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