Exhaust gas recirculation system for crankcase scavenged two...

Details Exhaust gas recirculation system for crankcase scavenged two... Exhaust gas recirculation system for crankcase scavenged two...

F - Mech Eng,Light,Heat,Weapons

02

B

123/98.04

F02B 47/08 (2006.01) F01N 13/08 (2010.01) F01N 1/08 (2006.01) F02B 33/04 (2006.01) F02F 1/22 (2006.01) F02B 75/02 (2006.01)

Patent

CA 1260343

ABSTRACT A two cycle crankcase scavenged internal combustion engine having an exhaust gas recirculation system. Exhaust gas from the coolest part of the exhaust muffler (66) is recirculated back to the crankcase (38) in a controlled discrete charge on each cycle of the engine. A recirculation port (96) extends through the cylinder sidewall and is opened briefly during the compression stroke of the piston (40) to thereby enhance vaporization of the fuel and increase velocity of the scavenging air-fuel mixture into the combustion chamber (36).

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