Author(s): Praveen Harari

Abstract: A proposed low-temperature combustion technique for obtaining high thermal efficiency and extremely low emissions in internal combustion engines is reactivity regulated compression ignition (RCCI). In order to control in-cylinder combustion phasing and heat release, the concept depends on the controlled employment of two fuels with different reactivities, usually a low-reactive fuel (like gasoline, ethanol, or natural gas) and a high-reactive fuel (like diesel or biodiesel). The impacts of various low- and high-reactivity fuel mixtures on engine performance, combustion properties, and emission behavior in RCCI operation are rigorously examined in this paper. Analysis is done on how ignition delay, pressure rise rate, and thermal efficiency are affected by fuel characteristics, blending ratios, injection time, and charge preparation. The study also covers contemporary developments in the use of alternative fuels, including biofuels and synthetic fuels, as well as difficulties with fuel selection, mixture preparation, and management systems. The research emphasizes that while preserving or increasing efficiency, the best fuel combination can result in notable reductions in NOx and particulate matter. To improve combustion controllability, increase load range, and guarantee practical application in real-world engines, more research is necessary.

DOI: 10.22271/27078043.2025.v6.i2b.100

Pages: 123-134 | Views: 95 | Downloads: 47

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