Dual-cylinder expander engine and combustion method with two...

F - Mech Eng,Light,Heat,Weapons – 02 – B

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F02B 41/02 (2006.01) F01B 9/02 (2006.01) F02B 41/00 (2006.01) F02B 41/06 (2006.01) F02B 75/24 (2006.01) F02G 3/02 (2006.01) F02B 75/02 (2006.01)

Patent

CA 2340196

An internal combustion engine is provided with an expansion cylinder (10) and at least one combustion cylinder (20), preferably two or four combustion cylinders per expansion cylinder. An air-fuel mixture is ignited within the combustion cylinders to drive a combustion piston (13) which, in turn, drives an engine crankshaft (38). The gaseous products of combustion are exhausted at a pressure substantially above atmospheric to an expansion cylinder wherein they are allowed to further expand against an expander piston (28) to drive an expander crankshaft (40). Torque produced at the engine crankshaft and torque produced at the expander crankshaft are combined to drive vehicle wheels.

L'invention concerne un moteur à combustion interne pourvu d'un cylindre de détente (10) et d'au moins un cylindre de combustion (20), avec de préférence deux ou quatre cylindres de combustion pour chaque cylindre de détente. Un mélange air-essence est allumé dans lesdits cylindres de combustion de manière à entraîner un piston de combustion (13) qui à son tour, entraîne le vilebrequin (38) du moteur. Les produits gazeux de la combustion sont rejetés à une pression sensiblement supérieure à la pression atmosphérique dans un cylindre de détente, dans lequel ils peuvent se détendre davantage contre un piston de détente (28), et ainsi entraîner le vilebrequin (40) d'un expanseur. Le couple produit au niveau du vilebrequin du moteur et le couple produit au niveau du vilebrequin dudit expanseur sont combinés pour entraîner les roues d'un véhicule.

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