ENGINE AND ENGINE-DRIVEN WORKING MACHINE
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United States of America Patent
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Issued Date -
Mar 6, 2014
app pub date -
Aug 29, 2013
filing date -
Aug 30, 2012
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An engine and an engine-driven working machine which enable blow-though prevention of an uncombusted air-fuel mixture and control of the number of times of combustion, stabilize operation during idling, and ensure output and acceleration performance during working are provided. A two-cycle engine having: a piston; a crankcase in which scavenging passages are formed; and a cylinder in which scavenging ports communicated with the scavenging passages and an exhaust port for discharging a combustion gas are formed. In the two-cycle engine, at least two or more systems of the scavenging passages having mutually different opening/closing systems are formed in the crankcase.
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