Gas engine
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United States of America Patent
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Jun 25, 2019
Grant Date -
Dec 22, 2016
app pub date -
Jan 15, 2015
filing date -
Jan 24, 2014
priority date (Note) -
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Abstract
A gas engine is provided that suppresses fluctuation of the actual air-fuel ratio even when a load fluctuates. A gas engine (1) in which at least one opening degree (D) selected from the opening degree of an air supply valve (5a) and the opening degree of a bypass valve (5b) is corrected so that an adequate target air-fuel ratio (λt) is achieved, wherein a target gas pressure (Pgt) and a target gas-jetting time (Tt) of a fuel gas are calculated on the basis of fluctuations of an actual load (L), the gas pressure is corrected on the basis of the target gas pressure (Pgt), and at least one opening degree selected from the opening degree of the air supply valve and the opening degree of the bypass valve is corrected on the basis of the amounts of change in the target gas pressure (Pgt) and the target gas-jetting time.
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