Combustion and emissions modeling of biodiesel using GT-power

Previous investigations into the simulation of biodiesel combustion have shown some significant differences between diesel fuel, soybean biodiesel, and rapeseed biodiesel. Upon review of the methodology used, it was discovered that several improvements in the methodology needed to be made. Improvements were made in the injected fuel mass to better fit the operation of an unmodified diesel engine and the estimation of the enthalpy ofbiodiesel liquid and vapor. These key improvements were then placed into the combustion model from the previous work to further study the fuel effects on engine performance and emissions. The load upon the engine had effects upon the performance of the engine. However, the emissions of the soybean and rapeseed biodiesel combustion were higher than diesel regardless of load on the engine.