Internal-combustion engines – Two-cycle – Rear compression
Patent
1983-02-03
1984-05-29
Burns, Wendell E.
Internal-combustion engines
Two-cycle
Rear compression
123 73R, 123 74A, F02B 3312
Patent
active
044507941
ABSTRACT:
A two-stroke engine is provided comprising at least one cylinder (1) in which is slidingly mounted a piston (2) which defines in this cylinder a combustion chamber (C) and a precompression chamber (P), the lateral cylindrical wall of the cylinder being provided with at least two ports closable by the piston (2), namely at least one transfer port (3) through which opens a transfer channel (4) connecting the two chambers together and at least one exhaust port (5) communicating with an exhaust pipe (6). These two ports are arranged and disposed so that the opening of the transfer port (3) begins before that of the exhaust port (5) and special means are provided for making the pressure of the fresh gases admitted into the combustion chamber (C) through the transfer port (3), during opening of this transfer port, sufficiently high with respect to that of the burnt gases then present in the combustion chamber.
REFERENCES:
patent: 859383 (1907-07-01), Hendry
patent: 1103089 (1914-07-01), Scott
patent: 1309312 (1919-07-01), Barker
patent: 2063666 (1936-12-01), Exel
patent: 2083808 (1937-06-01), Andrews
patent: 2352396 (1944-06-01), Maltby
patent: 3487818 (1970-01-01), Dineen
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