Stratified air scavenging in two-stroke engine

Details Stratified air scavenging in two-stroke engine Stratified air scavenging in two-stroke engine

F - Mech Eng,Light,Heat,Weapons

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F02B 75/02 (2006.01) F01P 1/02 (2006.01) F02B 17/00 (2006.01) F02B 25/04 (2006.01) F02D 9/04 (2006.01) F02F 1/00 (2006.01) F02B 75/12 (2006.01)

Patent

CA 1330761

ABSTRACT OF THE DISCLOSURE A two-cycle engine has an air inlet in the crankcase, and a spiral air-fuel passage encircling the cylinder wall rising from the crankcase to an inlet in the cylinder head to effect cooling of the cylinder. A fuel injection device introduces fuel into the transfer passage. A unidirectional valve admits air and fuel into the cylinder head and curved fins impart a swirling action to the air and fuel to effect a fuel and air stratification. An exhaust passage in the cylinder wall has an adjustable throttle to control directly the outflow of exhaust gases and indirectly the inflow of fresh fuel-air mixture, whereby the power level of the engine is controlled.

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