Manifold and water trap system for marine engine

Details Manifold and water trap system for marine engine Manifold and water trap system for marine engine

1995-07-19

1997-07-15

Basinger, Sherman

Marine propulsion

Jet drive

114270, 440 75, 440 89, 440111, B63H 1100, B63H 2306, B63H 2132

Patent

active

056477791

ABSTRACT:
A personal watercraft having a compact engine arrangement for driving a propulsion device such as a jet pump positioned to the rear of and on the underside of the watercraft. The engine is disposed so that its cylinder block is at an angle to a vertical plane, with the exhaust manifold being positioned on the underside of the cylinder bank. An expansion chamber device is provided at the rear end of the engine and at a height that is higher than the exhaust ports of the engine and the discharge of the exhaust system so as to provide a trap for precluding flow of water to the engine through the exhaust system. This positioning of the engine places its crankshaft in offset relationship to the drive shaft of the propulsion device, and a two-stage step-down transmission drives the drive shaft from the crankshaft.

REFERENCES:
patent: 2769420 (1956-11-01), Horton et al.
patent: 3948206 (1976-04-01), Tyler
patent: 4565532 (1986-01-01), Connor
patent: 5096446 (1992-03-01), Tazaki et al.
patent: 5251439 (1993-10-01), Nakase et al.

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