Two-stroke cycle gasoline engine

Details Two-stroke cycle gasoline engine Two-stroke cycle gasoline engine

1978-06-20

1980-01-29

Lazarus, Ira S.

Internal-combustion engines

Multiple piston, common nonrestrictive combustion chamber

Four-cycle

123 70R, F02B 2508

Patent

active

041855965

ABSTRACT:
A two-stroke cycle gasoline engine including at least one two-stroke power cylinder-piston assembly incorporating uniflow scavenging and two horizontally opposed pistons, and at least one scavenging pump cylinder-piston assembly of the reciprocating type, wherein the total stroke volume of the scavenging pump assembly is 1.15-1.65 times as large as that of the power cylinder-piston assembly, and the operational phase relation between the power and pump cylinder-piston assemblies is so determined that the top dead center of a pump cylinder-piston assembly is, as viewed in the crank angle diagram, in a range between 15.degree. in advance of and 15.degree. behind the midpoint between the bottom dead center and the scavenging port closing phase point of the power cylinder-piston assembly to which the pump cylinder-piston assembly supplies scavenging mixture.

REFERENCES:
patent: 1474549 (1923-11-01), Penning
patent: 2167946 (1939-08-01), Gray
patent: 2267479 (1941-12-01), Sturm et al.
patent: 2281821 (1942-05-01), Balmer
patent: 2347444 (1944-04-01), Vincent
patent: 2374460 (1945-04-01), Rossman
patent: 2434584 (1948-01-01), Purdie
patent: 2939441 (1960-06-01), Luttrell
patent: 3198179 (1965-08-01), Stephens

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