ABSTRACT
Emission control poses a challenge in the design of compression ignition (CI) engines due to stringent emission regulations, as the control over the emissions, that is, nitrogen oxide (NOx) and particulate matter (PM) is very difficult in CI engines. This work is aimed at experimentally studying the effects of different split injection methods and dwell in between of the fuel injections on emissions from CI engine and combustion. These experiments are performed at different injection pressures. Various split injection methods at different injection pressure were employed by attaching the electronic fuel injection system to the engine. Moreover, computational fluid dynamics technique is used to explain the various experimental results. This study shows that 2-shot split injection method results in significant reduction in NOx with an acceptable change in brake thermal efficiency (BTE), PM, and 312carbon monoxide (CO). This study also shows that injection pressure affects the emissions of NOx and PM considerably.
