A Study on Endothermic, Heat Recovery, Heat Release and Emission Characteristics of Ammonia-Biodiesel Fuel Combustion

Alternative fuels have been explored for decades as a possible replacement for conventional diesel in order to reduce reliance on fossil fuels and reduce environmental pollution. Implementing Ammonia-based fuel instead of biodiesel has distinct advantages due to its accessibility and prestige as the only carbon-free energy source other than hydrogen. The present study aimed to investigate the combustion process, which begins with fuel injection and continues through endothermic, heat recovery, auto-ignition, and heat release, as well as the emission products of Ammonia-Biodiesel mixtures. The experiment was carried out with the aid of a Rapid Compression Machine, which imitated the actual sensations of a compression ignition diesel engine operating at 130 MPa injection pressure and elevated temperatures ranging from 750K to 1050K. A series of in-chamber pressure and emission data sets were used to graphically represent the ignition delay, heat release, and emissions characteristics. The study discovered that using Ammonia-Biodiesel fuel at higher ambient temperatures reduces the ignition delay, improving ignitability and combustion efficiency while also bettering emissions quality. The extension work can be considered by varying the Ammonia concentration in fuel blends, employing an Ammonia fumigation strategy, and advancing manipulation of the experiment parameters. The researcher also believes that further investigation of the Ammonia-Biodiesel fuel mixture using a diesel engine for both on-bed and on-board testing is feasible in the future.