Engine cooling system for outboard motor

Details Engine cooling system for outboard motor Engine cooling system for outboard motor

1998-01-30

1999-10-26

Kamen, Noah

Internal-combustion engines

Cooling

Parallel flow

123 4108, 123195P, 440 88, 440900, F01P 300

Patent

active

059709260

ABSTRACT:
An engine includes first exhaust passages formed in a cylinder head, a second exhaust passage formed in a cylinder block and communicating with the first exhaust passages, and a cooling water passage having water jacket portions formed around combustion chambers. The cooling water passage includes a first water jacket and a second water jacket. The cylinder head and the cylinder block are fixedly connected together by bolts. The second exhaust passage opens at a joining surface of the cylinder block along cylinders, which opening is surrounded by the bolts. The cooling water passage has water jacket portions formed between the bolts in the joining surface of the cylinder block such that they surround the opening of the block exhaust passage.

REFERENCES:
patent: 4312304 (1982-01-01), Tyner
patent: 5036804 (1991-08-01), Shibata
patent: 5109809 (1992-05-01), Fujimoto

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