Exhaust arrangement for an outboard marine drive engine

Details Exhaust arrangement for an outboard marine drive engine Exhaust arrangement for an outboard marine drive engine

1998-09-14

2000-03-07

Swinehart, Ed

Marine propulsion

Means for accomodating or moving engine fluids

Means for handling exhaust gas

440900, B63H 2132

Patent

active

060332743

ABSTRACT:
In an outboard marine drive, a primary partition made of elastomeric material is provided in a lower part of the extension case, and a drive shaft and an exhaust pipe are sealingly passed through the primary partition. Thereby, the extension case is kept out of direct contact from the exhaust gas, and is therefore prevented from excessive heating. The exhaust pipe and the drive shaft typically have a large length, and it is advantageous to support them at parts thereof near a lower end thereof. The use of elastomeric material for the primary partition is particularly advantageous because it not only can favorably insulate heat but also can accommodate any positional errors in the exhaust pipe and the drive shaft relative to the extension case. When a secondary opening is formed in an upper part of the exhaust pipe to prevent excessive build up of exhaust back pressure when the engine is idling, a secondary partition may also be provided in an upper part of the extension case.

REFERENCES:
patent: 4887692 (1989-12-01), Outani et al.

Affiliated with

Also associated with

Rating

Exhaust arrangement for an outboard marine drive engine does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Exhaust arrangement for an outboard marine drive engine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exhaust arrangement for an outboard marine drive engine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-357677