| 摘要 |
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. |
