Combination exhaust manifold and exhaust elbow for marine propul

Details Combination exhaust manifold and exhaust elbow for marine propul Combination exhaust manifold and exhaust elbow for marine propul

1989-04-25

1990-12-18

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

Treated by washing, or having liquid contact structure

60321, F01N 302, F01N 710

Patent

active

049777416

ABSTRACT:
A combination exhaust manifold and exhaust elbow for an internal combustion engine includes an exhaust cavity for receiving exhaust from the engine, an exhaust passage leading from the exhaust cavity, and an exhaust discharge outlet. A first water jacket is provided around the exhaust cavity and a second water jacket is provided around the exhaust discharge passage. A dam is provided between the first and second water jackets, having a passage therein for allowing fluid communication between the first and second water jackets. A warm water inlet is provided in the first water jacket around the exhaust cavity for receiving cooling water which has been warmed by the engine, and which flow is controlled by a temperature sensitive thermostat. A cold water inlet is provided adjacent the discharge exhaust passage. The cold water inlet is disposed either upstream or downstream of the dam adjacent the exhaust passage, and allows cold bypass water to be discharged without the necessity of the cold water flowing through the entire assembly, so as to prevent moisture from condensing out of the exhaust in the exhaust cavity.

REFERENCES:
patent: 2060187 (1936-11-01), Fernstrum
patent: 3765479 (1973-10-01), Fish
patent: 3780712 (1973-12-01), Pace
patent: 4573318 (1986-03-01), Entringer et al.
patent: 4711088 (1987-12-01), Berchem

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