Two-cycle internal combustion engine

Details Two-cycle internal combustion engine Two-cycle internal combustion engine

F - Mech Eng,Light,Heat,Weapons

02

B

F02B 25/20 (2006.01) F02B 25/14 (2006.01) F02M 69/10 (2006.01) F02B 75/02 (2006.01)

Patent

CA 2206653

This invention is directed to a two-cycle internal combustion engine capable of preventing blow-by phenomenon to improve fuel economy and attain a high exhaust gas improve fuel economy and attain a high exhaust gas purifying performance, and increasing the responsiveness of fuel injection volume. In the two-cycle internal combustion engine, a chamber 29 is disposed in scavenging passages 30, 31 for communicating a crank chamber 9 to a combustion chamber 6, sealable control valves 26, 33 are respectively disposed in an inlet and an outlet of the chamber 29, and a fuel feeding system 37 for the supply of fuel into the chamber 29 is provided. The chamber 29 communicates with one scavenging passage 18 out of a plurality of parallel scavenging passages. The combustion chamber side control valve 33, disposed at an outlet of the chamber 29 on the downstream side of the crank case side control valve 26 provided at an inlet of the chamber 29, is positioned at the bottom portion of a scavenging passage 18 communicating with the chamber 29.

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