Two-stroke engine having a central scavenging system

Details Two-stroke engine having a central scavenging system Two-stroke engine having a central scavenging system

1988-05-25

1989-03-07

Wolfe, Willis R.

Internal-combustion engines

Two-cycle

Rear compression

123 65A, 123 73PP, F02B 7502, F02F 324

Patent

active

048096482

ABSTRACT:
Disclosed is a two-stroke engine having a central scavenging system through which the scavenging mixture, regulated into a single stream at a scavenging port provided in the top wall of the piston, jets upwardly into the center of the top portion of the cylinder bore and then spreads radially outwards so as to provide a plurality of currents of scavenging mixture. These currents branch from the main stream of scavenging mixture and flow through shorter distance as well as undergo similar flow environment with respect to one another due to symmetry in regard to the center of the cylinder. Thus, the scavenging performance of the two-stroke engine can be greatly improved.

REFERENCES:
patent: 752410 (1904-02-01), Ostergren
patent: 856647 (1907-06-01), Maud
patent: 1346066 (1920-07-01), Spuhler
patent: 1535433 (1925-04-01), Morrell
patent: 1664782 (1928-04-01), Magdeburger
patent: 3257998 (1966-06-01), Brooks
patent: 4135479 (1979-01-01), Reitz et al.
patent: 4248184 (1981-02-01), Maul
patent: 4329948 (1982-05-01), Fujikawa et al.

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