Exhaust outlet equipment of small watercraft and pipe...

Details Exhaust outlet equipment of small watercraft and pipe... Exhaust outlet equipment of small watercraft and pipe...

2005-05-24

2005-05-24

Sotelo, Jesus D. (Department: 3617)

Marine propulsion

Means for accomodating or moving engine fluids

Means for handling exhaust gas

Reexamination Certificate

active

06896568

ABSTRACT:
Exhaust outlet equipment provided at a downstream end portion of an exhaust passage of a propulsion engine in a flow of an exhaust gas, wherein the engine is mounted in a small watercraft propelled by a water jet pump. The exhaust outlet equipment typically includes an exhaust pressure reducing chamber provided laterally of a pump room that contains the water jet pump, the chamber having a volume for reducing a pressure of the exhaust gas to a predetermined pressure. The exhaust pressure reducing chamber typically has an introduction port through which the exhaust gas from an exhaust pipe located on an upstream side in the flow of the exhaust gas flows into the exhaust pressure reducing chamber, and a discharge port through which the exhaust gas inside the exhaust pressure reducing chamber is discharged to an ambient side.

REFERENCES:
patent: 5676575 (1997-10-01), Fukuda et al.
patent: 5931712 (1999-08-01), Hattori et al.
patent: 6213828 (2001-04-01), Tsumiyama et al.
patent: 6261140 (2001-07-01), Yoshida et al.

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