Internal combustion engine with improved gas exchange

Internal-combustion engines – Multiple cylinder – Having rotary output shaft parallel to cylinders

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F02B 7526, F01B 302

Patent

active

06098578&

ABSTRACT:
An internal combustion engine of the opposed piston type valved by the passage of the pistons beyond inlet and outlet ports at opposite ends of the cylinders. The motion transmitting mechanisms for the opposed pistons are operable to move the opposed pistons within each cylinder through a successive three cycle repeating movement which includes (1) an operative power cycle, (2) a gas exchange cycle, and (3) an operative compression cycle. A pump assembly is associated with each piston operable to cause a fresh charge of gas to be displaced by the pump assemblies associated with the opposed pistons of each cylinder during an operative cycle of the associated pistons therein and confined to move directly into the open inlet port of one other cylinder generally simultaneously with the gas exchange cycle of the opposed pistons associated therewith so as to thereby effect the exchange of the combusted gases therein with a fresh charge under relatively low pressure conditions during a time period which is generally equal to the time of the operative cycle.

REFERENCES:
patent: 2630100 (1953-03-01), Fulke
patent: 5218933 (1993-06-01), Ehrlich

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