Outboard motor exhaust tube divider

Details Outboard motor exhaust tube divider Outboard motor exhaust tube divider

1987-06-11

1988-12-13

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

Exhaust gas or exhaust system element heated, cooled, or...

440 89, F01N 302

Patent

active

047901349

ABSTRACT:
A divider (25, 22) is integrated into the upper end of an outboard motor exhaust tube (17) so that the exhaust discharging from a pair of engine ports (12a) remains separated for a portion of its downward travel through the tube. The divider separates the exhaust tube itself into multiple individual channels. More specifically, a longitudinally extending vertical plate (25) is disposed within the exhaust tube and extends thereacross. The opposed vertical plate edges are anchored to the vertical exhaust tube walls (18, 19). In the present embodiment, a longitudinally extending cooling tube housing (22) effectively forms part of one of the exhaust tube walls (18) and with the housing itself forming part of the divider.

REFERENCES:
patent: 3217696 (1965-11-01), Kiekhaefer
patent: 3808807 (1974-05-01), Lanpheer
patent: 3813880 (1974-06-01), Reid et al.
patent: 4145988 (1979-03-01), Harada
patent: 4187809 (1980-02-01), Lanpheer
patent: 4346676 (1982-08-01), Tyner
patent: 4731995 (1988-03-01), McFarland

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