Internal-combustion engines – Multiple piston – common nonrestrictive combustion chamber – Four-cycle
Patent
1990-01-26
1991-01-01
Okonsky, David A.
Internal-combustion engines
Multiple piston, common nonrestrictive combustion chamber
Four-cycle
123 51BA, 123 57R, F02B 3308
Patent
active
049811142
ABSTRACT:
Each main cylinder (10) of an internal combustion engine is provided with a smaller idle cylinder (12). Pistons (14, 20) in the cylinders (10, 12) are operated substantially in unison and are driven by crank shafts (18, 24) which are mechanically connected (26). A fuel air charge is compressed within the idle cylinder (12). Then, it is ignited within an ignition passageway (60). The ignited mixture is injected into a center region of the combustion chamber (58) of the main cylinder (10). A relatively lean fuel-air mixture is delivered by a duct (54) into the combustion chamber (58) as a swirling stream. Air alone is delivered by duct (56) into the combustion chamber around the swirling fuel-air stream from duct (54). The ignited gases from passageway (60) ignites the fuel air mixture in combustion chamber (58). The volume of the idle cylinder (12) is sized to take in and compress only the volume of fuel-air mixture which is needed to produce the power for idling and in addition produce a high enough temperature to ignite the relatively lean fuel air mixture that is separately introduced into the combustion chamber (58) of the main cylinder (10).
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patent: 4275689 (1981-06-01), Ray
patent: 4312308 (1982-01-01), Slattery
Barnard Delbert J.
Okonsky David A.
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