Stratified-charge two-stroke cycle engine

Details Stratified-charge two-stroke cycle engine Stratified-charge two-stroke cycle engine

1983-12-29

1984-11-13

Burns, Wendell E.

Internal-combustion engines

Two-cycle

Rear compression

123 73A, 123 73B, 123DIG4, 123432, 123433, F02B 3304, F24B 1304

Patent

active

044819102

ABSTRACT:
A stratified-charge two-stroke cycle scavenged spark-ignition engine 1 includes a piston (2) reciprocal in a cylinder (3) between a combustion chamber 4 and a crankcase (5). A carburetor (17) is mounted to the crankcase substantially coaxially with the piston to afford narrow engine design. An elongated scavenging air passage (14) extends between the crankcase and the combustion chamber and has a length substantially greater than that of a fuel-air transfer passage (7), and the height of piston (2), to reduce fuel mixture in the scavenging air passage and afford substantially only air at an air inlet port (16), which port is between fuel-air mixture inlet port (8) and exhaust port (13).

REFERENCES:
patent: 1664091 (1928-03-01), Sinclair
patent: 1947375 (1934-02-01), Broderson
patent: 2249354 (1971-07-01), Gehres
patent: 4075985 (1978-02-01), Iwai
patent: 4253433 (1981-03-01), Blair
patent: 4317432 (1982-03-01), Noguchi et al.
"Zweitakt-Gemischspulung mit Spulvorlage", by Dr.-Ing. Kurt Blume, Gal.beta.ach, MTZ Motortechnische Zeitschrift, 74, (1972), pp. 475-479.

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