F - Mech Eng,Light,Heat,Weapons – 02 – B
Patent
F - Mech Eng,Light,Heat,Weapons
02
B
171/16
F02B 33/04 (2006.01)
Patent
CA 1054062
ABSTRACT OF THE DISCLOSURE Disclosed herein is an internal combustion engine comprising a piston movable relative to a cylinder and a crankcase between top dead center and bottom dead center positions and relative to first, second and third positions respectively spaced from top dead center position at respectively greater distances, whereby the crankcase is subject to cyclical conditions of relatively high and low pressure, a transfer chamber, a reed valve controlled port for supplying fresh air to the transfer chamber when the transfer chamber is subject to low pressure, a carburetor for supplying a fuel/air mixture to the crankcase when the crankcase is subject to low pressure, a transfer port providing communication between the transfer chamber and the crankcase during conditions of low pressure in the crankcase and during piston travel between top dead center position and the first position whereby to cause introduction into the transfer chamber of fresh air, whereby the air introduced into the chamber is isolated during piston movement between the first and second positions, an inlet port providing communication between the transfer chamber and the cylinder during piston travel between the second position and bottom dead center, whereby the air introduced into the transfer chamber is permitted to flow from the transfer chamber into the cylinder, and a piston port cooperating with the transfer port to provide communication between the transfer chamber and the crankcase during conditions of relatively high pressure in the crankcase and during piston travel between the third position and bottom dead center position, whereby fuel/air mixture flows into the cylinder through the transfer chamber from the crankcase. Also disclosed herein is the method of operating of the above described engine.
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