Internal combustion engine and operating cycle therefor

Internal-combustion engines – Burning by highly compressed air – Oil engine air preheated

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Details

123 51BC, 123 51BD, 123 53R, 123 68, 123554, F02G 1044

Patent

active

045207658

ABSTRACT:
An engine and method in accordance with this invention includes a plurality of parallel cylinders equally spaced from a longitudinally extending engine axis with a pair of opposed pistons in each cylinder for controlled reciprocation therein. Respective rotatably mounted axial-faced cams and followers control the motion of the pistons through the operating cycle to permit at least one power stroke from each cylinder during each rotation of the engine. A controllable divider valve located between the opposed faces of the pistons defines, on one side, a first air/fuel receiving compression chamber and, on the other side, a second relatively high-pressure ignition air receiving chamber. Before the cam-controlled compression stroke, the divider valve is closed so that the air/fuel mixture on the one side of the closed valve is compressed to a first pressure and the ignition air on the other side of the valve is compressed to a relatively higher pressure causing the temperature of this more highly compressed air to increase to a temperature above the ignition temperature of the compressed air/fuel mixture. Ignition begins by opening the divider valve to permit the high-pressure, high-temperature ignition air in the second chamber to enter the compressed air/fuel mixture in the first chamber, causing burning thereof. The burning air/fuel mixture then enters the second chamber on the other side of the still-open valve to heat a relatively large mass of air causing both pistons to retract during the power stroke.

REFERENCES:
patent: Re30565 (1981-04-01), Kristiansen
patent: 1486299 (1924-03-01), Powell
patent: 4040400 (1977-08-01), Kiener
patent: 4233815 (1980-11-01), Melchior
patent: 4359017 (1982-11-01), May

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