| 摘要 |
PROBLEM TO BE SOLVED: To efficiently use exhaust gas energy in an exhaust gas type supercharger in an engine capable of two cycle operation and provided with the exhaust gas type supercharger. SOLUTION: The engine 10 is provided with a lead valve 50 as a reverse flow preventing means between a combustion chamber 15 and the exhaust gas type supercharger 40 in an exhaust gas passage 17 discharging combustion chamber gas in a combustion chamber to outside. Exhaust gas discharged from an inside of the combustion chamber 15 once is prevented from flowing reversely into the combustion chamber 15 during scavenging period by being provided with the lead valve 50. Consequently, exhaust gas energy can be efficiently transmitted to a turbine 42 of the exhaust gas type supercharger 40 and supercharging can be done efficiently. COPYRIGHT: (C)2005,JPO&NCIPI
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