DUAL-FUEL DIESEL ENGINE
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United States of America Patent
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Issued Date -
Oct 22, 2015
app pub date -
Feb 7, 2013
filing date -
Apr 11, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An object is to, in a low-load operating range of a dual-fuel diesel engine or a dual-fuel diesel engine unit including a plurality of the dual-fuel diesel engines, reduce the amount of injection of oil fuel so as to make it possible to make exhaust gas less harmful and to reduce fuel cost. On a cylinder head, a plurality of dual-fuel injectors are disposed, each of which having a gas fuel injector that injects a gas fuel being a main fuel and a pilot fuel injector that injects an oil fuel. In a low-load operating range where it is not necessary for the dual-fuel injectors to inject fuel at the same time for ignition, fuel is injected alternately from the dual-fuel injectors and combusted in every single combustion cycle. As a result, it is possible to halve the amount of injection of oil fuel in the low-load operating range.
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