Internal-combustion engines – Two-cycle – Separate air and gas pumps
Patent
1981-06-12
1982-11-16
Burns, Wendell E.
Internal-combustion engines
Two-cycle
Separate air and gas pumps
123 53BA, 123 73CC, 123 73R, 123 69R, F02B 108, F02B 2512, F02B 3304
Patent
active
043590179
ABSTRACT:
An internal combustion engine operating on a two-stroke cycle and including a piston 1 reciprocable in a cylinder 2 to drive a crank shaft and also to inhale and compress a volume of air is characterized by a second piston 15 working in a separate cylinder 13 co-axial with and opposed to the first cylinder 2, the piston 15 being synchronized with the first piston 1. The second piston 15 acts to introduce a compressed charge of mixture of air and fuel through a non-return valve 30 into a relatively small ignition chamber 34 including a sparking plug 35 and communicating with a combustion chamber 11 in the head of the cylinder 1. The piston 15 draws air/fuel mixture along an inlet passage 20, past a non-return reed valve 21 and into a crank case 22. On the return stroke of the piston 15 the mixture passes through passages 23 in the piston controlled by a non-return valve 24 and also along passages 14 and around the piston. The next stroke of the piston 15 compresses the charge of mixture and forces it through the valve 30 which generates turbulence prior to ignition.
REFERENCES:
patent: 1168425 (1916-01-01), Rosenhagen
patent: 1664091 (1928-03-01), Sinclair
patent: 3923019 (1975-12-01), Yamada
patent: 3934562 (1976-01-01), Isaka
patent: 4191138 (1980-03-01), Jaulmes
patent: 4248185 (1981-02-01), Jaulmes
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