Internal-combustion engines – Two-cycle – Rear compression
Patent
1979-02-05
1981-10-13
Burns, Wendell E.
Internal-combustion engines
Two-cycle
Rear compression
123 73PP, 123 73AA, 123 73AV, 123 65VA, 123 47R, 123 53B, 123 47A, 123 53BP, 123 52B, F02B 3304, F01L 1100, F02B 2512
Patent
active
042942012
ABSTRACT:
A two-stoke cycle combustion-engine with crank-chamber compression is described, free of charging transfer passages external to the cylinder, with pumping-displacement exceeding working-displacement for responsive intake and thorough scavenging of spent-gas residue, and featuring an annular water-cooled cell, suspended from the cylinder-head by several water-conduits, and cooperating with an annular recess in the piston-head so as to form, and transversely separate, a plain working-chamber and an annular working-chamber, longitudinally scavengeable in series, bottom-to-top and top-to-bottom, respectively, with minimal loss of charge to exhaust-port, such a system of scavenging also reducing piston cooling-problems and misfiring associated with charge-dilution (in gasoline-engines operating under partial-charge conditions). In addition, a more general scavenging principle is enunciated and claimed, applicable to rear-compression and separately-scavenged two-stroke engines.
REFERENCES:
patent: 1030217 (1912-06-01), Watres et al.
patent: 1139713 (1915-05-01), Osterman
patent: 1153432 (1915-09-01), Iler et al.
patent: 1518983 (1924-12-01), Hyvernaud
patent: 1645647 (1927-10-01), Hutsell
patent: 4096835 (1978-06-01), Lamont
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