Internal-combustion engines – Multiple cylinder – Having rotary output shaft parallel to cylinders
Patent
1997-03-31
1998-05-12
Okonsky, David A.
Internal-combustion engines
Multiple cylinder
Having rotary output shaft parallel to cylinders
123 565, 123 62, F02B 7506
Patent
active
057493375
ABSTRACT:
A barrel type engine with two-stroke cycle of operation. The engine of the present invention comprises two engine halves, each half having a plurality of pumping cylinders and a matching number of power cylinders. Double-ended pistons impart rotational motion to the engine shaft by a cam. The cylinder arrangement of the present invention facilitates efficient communication of intake air between the pumping cylinders and the power cylinders contained within each engine half, and further establishes a natural and beneficial timing relationship between the action of the pumping cylinders and the action of the corresponding power cylinders. In operation, intake air is drawn into the pumping cylinders and then transferred to the power cylinders by a transfer duct system. Due to the natural timing characteristics inherent in the engine of the present invention, intake air is forcibly transferred to the power cylinders with minimum parasitic pumping loss, ensuring favorable cylinder scavenging and filling for maximum efficiency. The diameter of the pumping cylinders is larger than that of the power cylinders, resulting in a net supercharging effect and further enhancing power output. The present invention takes advantage of the inherent characteristics of barrel type engines to achieve favorable intake and exhaust gas flow, resulting in increased power and efficiency.
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Fischer Morland C.
Okonsky David A.
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