Two-cycle internal combustion engine
AssigneeAteliers de la Motobecane
InventorChristian Jaulmes
Life of this patent
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Abstract
A two-cycle internal combustion engine includes a power cylinder, a drive piston being positioned therein. A first transfer duct extends between an auxiliary cylinder, which is supplied with carburetted air and the power cylinder and opens thereinto via a carburetted air inlet port provided on the side wall of the power cylinder or its combustion chamber. A pump crankcase, which is supplied with pure air, is connected to the power cylinder via a second transfer duct which opens thereinto via a scavenging inlet port on the side wall of the power cylinder. An exhaust port is provided on the side wall of the power cylinder. The ports are operatively arranged so that the scavenging port starts to open after the exhaust port and before the carburetted air inlet port.
Claims9
A two cycle internal combustion engine comprising at least one power cylinder;
- a drive piston in said power cylinder;
- at least one auxiliary cylinder;
- at least one first transfer duct extending between said auxiliary cylinder and said power cylinder;
- at least one second transfer duct extending between said pump crankcase and said power cylinder;
- means for intaking carburetted air into said auxiliary cylinder;
- means for intaking pure air into said pump crankcase;
- an exhaust port from said power cylinder;
- a scavenging intake port opening into said power cylinder;
- and a carburetted air intake port opening into said power cylinder, said exhaust port, said scavenging port and said carburetted air inlet port being so positioned that said scavenging port starts to open after said exhaust port and before said carburetted air intake port.
Dependencies are inferred from the claim text.