Homogeneous charge compression ignition internal combustion engine
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United States of America Patent
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Feb 3, 2009
Grant Date -
Jul 19, 2007
app pub date -
Dec 8, 2006
filing date -
Jan 13, 2006
priority date (Note) -
Expired
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Abstract
A homogeneous charge compression ignition internal combustion engine capable of reliably reducing flame noise at a time of high-load operation is provided. The engine includes an injector which injects a liquid hydrocarbon fuel to an intake port, and an injector which directly injects an alcohol fuel into a combustion chamber. The liquid hydrocarbon fuel is distributed to an outer peripheral side of the combustion chamber, and the alcohol fuel is distributed to a central portion. The engine includes two intake valves, and divides an intake stroke into a period in which one of the intake valves is stopped and a fuel-gas mixture is flown, and a period in which the both of the intake valves are operated and the flow is suppressed, guides the liquid hydrocarbon fuel into the combustion chamber during the flow period, and injects the alcohol fuel to the combustion chamber during the flow suppression period.
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