METHOD AND APPARATUS FOR CONTROLLING PREMIXED COMBUSTION IN A MULTIMODE ENGINE
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United States of America Patent
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N/A
Issued Date -
Mar 20, 2014
app pub date -
Jul 30, 2012
filing date -
Aug 9, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A method of fueling an internal combustion engine including operating the internal combustion engine in a dual-fuel mode in which the engine is fueled by a pre-mixed charge of fresh air, recirculated exhaust gases, gaseous fuel as primary fuel and early injected liquid fuel as a secondary fuel, ignited by a late injected pilot fuel to provide low temperature combustion. The method further includes adjusting EGR and/or fresh airflow to the engine to maintain peak in-cylinder temperature in a desired range, preferably between 1500 K and 2000 K. EGR preferably is controlled to obtain a desired in-cylinder O2 mole fraction, and fresh airflow preferably is controlled to obtain a desired fresh air lambda.
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