Performance, Combustion and Emission Analysis of Reactivity Controlled Compression Ignition Engine

Abstract

Reactivity Controlled Compression Ignition (RCCI) is an advanced combustion technology that uses two fuels with different reactivity to improve engine efficiency and reduce emissions. In this study, the performance, combustion, and emission characteristics of an RCCI engine were analyzed using gasoline as the low-reactivity fuel and diesel as the high-reactivity fuel. The experiments were conducted by varying engine load, fuel ratio, injection timing, and exhaust gas recirculation (EGR) rate while maintaining constant engine speed. Performance parameters such as brake thermal efficiency (BTE) and brake specific fuel consumption (BSFC), along with emission parameters like NOx, CO, HC, and smoke were evaluated. The results show that RCCI combustion can significantly reduce NOx and soot emissions while improving engine efficiency compared to conventional diesel engines. This study shows that RCCI technology has strong potential for future low-emission and high-efficiency engines.