Air-intake system of multi-cylinder engine of small watercraft

Details Air-intake system of multi-cylinder engine of small watercraft Air-intake system of multi-cylinder engine of small watercraft

2005-04-05

2005-04-05

Swinehart, Ed (Department: 3617)

Marine propulsion

Means for accomodating or moving engine fluids

Cooling for engine

Reexamination Certificate

active

06875069

ABSTRACT:
An air-intake system of a multi-cylinder engine of a small watercraft. The system typically includes a plurality of air-intake pipes respectively provided for cylinders, the air-intake pipes having first opening end portions respectively connected to a plurality of air-intake ports of a cylinder head, and an air-intake box to which second opening end portions of the air-intake pipes are connected. The air-intake box typically is provided laterally of the engine and has a bottom portion located lower than a center axis of a crankshaft of the engine, and the air-intake pipes typically extend from the air-intake ports to an inside of the air-intake box. The second opening end portions typically open inside the air-intake box at a position spaced apart a predetermined distance from an inner bottom face of the bottom portion of the air intake box.

REFERENCES:
patent: 6447351 (2002-09-01), Nanami

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