Internal combustion engine

Details Internal combustion engine Internal combustion engine

1978-02-24

1980-01-22

Myhre, Charles J.

Internal-combustion engines

Multiple cylinder

Cylinders radiating

60323, 123 55V, 123 65EM, F02B 7522

Patent

active

041844629

ABSTRACT:
A sixty degree, V-6 engine for an outboard motor includes loop scavenging and charging with a pair of oppositely located input passageways with differently angles sidewalls and which provide progressive, smooth constriction to the charging port to establish a highly effective velocity pattern across the top of a flat piston. Cast "Blister" cylinder liners with integral ports are integrally cast into an aluminum block. The block is cast with a single manifold between the two cylinder blanks. A milling cutter is located within the manifold to open the exhaust passageways. A T-shaped manifold is secured to close the manifold and define a pair of separate exhaust passageways. The cylinders are rotated to align the upper and lower inlet ports and particularly to locate the exhaust port projecting downwardly into a center manifold. Adjacent piston rods are mounted upon a common crankshaft pin. In high speed racing outboards the engine is fired with an inverse firing order from the lowermost to the uppermost cylinder.

REFERENCES:
patent: Re15019 (1921-01-01), Landgraf
patent: 1352486 (1920-09-01), Vincent
patent: 1403350 (1922-01-01), Short
patent: 2858666 (1958-11-01), Fullemann
patent: 3166054 (1965-01-01), Conover
patent: 3692006 (1972-09-01), Miller

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