Split injection strategies are attractive combustion strategies due to their potential in satisfying strict emission standards. In this study, a multidimensional computational fluid dynamics simulation was used to validate the… Click to show full abstract
Split injection strategies are attractive combustion strategies due to their potential in satisfying strict emission standards. In this study, a multidimensional computational fluid dynamics simulation was used to validate the numerical results for single- and double-injection strategies with experimental data. Thereafter, simultaneous effects of converting a single-injection strategy to a double-injection strategy and retarding the injection timing on the combustion parameters, pollutant emission, performance, and exergy terms were investigated. Results showed that double-injection strategies and retarding the start of injection could significantly affect the performance and engineout emissions, which could reduce the pollutant emission with a slight decrease in engine performance. Furthermore, results of exergy study confirm that double-injection strategies have a better exergy efficiency due to its lower irreversibility than the single-injection strategy.
               
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