The CFD Analysis of a CI Engine's Combustion Properties as it Runs on Chicken Fat Biodiesel at Various Compression Ratios

Abstract

In this research, the properties of combustion in a 4-Stroke compression ignition (CI) Kirloskar engine that burns a mixture of diesel fuel and 20% biodiesel (CB20) made from chicken fat are studied experimentally and numerically. Three nozzles with a 0.15mm diameter are used to inject the fuel into the Kirloskar 4 stroke diesel engine's cylinder at a pressure of 220 bar. As the compression ratio increases, BP, BTE, and emissions of CO increased and decreased in the BSFC, Carbon dioxide and emissions of HC. The best emission characteristics are found in CB20, which performs better than all biodiesel blends at full load (80%). Through experimentation, it was possible to determine parameters like as combustion characteristics, peak pressures that were created, and corresponding changes in cylinder volume during the compression and expansion strokes relative to piston movement. The volume, pressure, quantity of heat emitted during fuel combustion, and temperature in the IC engine cylinder are all monitored by IC engine model as a simulation tool in the ANSYS software. The simulation's peak pressure, volume, heat release rate, and temperature variations are compared to the corresponding experimental data for CR 14:1, 16.5:1, and 18:1, without modification in the CI engine. As a consequence, CFD study may prove useful to future combustion modelling researchers.