Internal-combustion engines – Valved piston – Charge passes from crankcase through valve in piston
Patent
1987-03-19
1988-12-20
Myhre, Charles J.
Internal-combustion engines
Valved piston
Charge passes from crankcase through valve in piston
123149C, 123182, 123599, F01L 1100
Patent
active
047918926
ABSTRACT:
A two stroke engine including a single piston housing, a transfer port, an inlet port in the housing, an exhaust port in the housing, a piston located in the housing, a connecting rod integral with or otherwise rigidly secured to the piston, a crankcase located adjacent to the piston, a crankshaft in the crankcase, pivotal connection means between the crankshaft and connection rod to facilitate rotation of the crankshaft in the crankcase, and electronic ignition means located within the crankcase. Preferably the crankshaft is provided with a magnet for passage by the electronic ignition means to effect firing of the engine. The ignition means is movable within the crankcase to achieve a position in advance or retard of top dead center. Preferably there is further provided a decompression valve in a top part of the piston to achieve easier starting of the engine.
REFERENCES:
patent: 1229217 (1917-06-01), Brougham
patent: 1274980 (1918-08-01), Brevard
patent: 1287509 (1918-12-01), Sullivan
patent: 1322488 (1919-11-01), Hall
patent: 1740235 (1929-12-01), Fogas
patent: 3747649 (1973-07-01), Denson et al.
patent: 4155340 (1979-05-01), Fernquist et al.
patent: 4491097 (1985-01-01), Hamann
patent: 4512291 (1985-04-01), Kirk
Myhre Charles J.
Okonsky David A.
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