MS2-1 Simulation of Diesel surrogate fuels performance under engine conditions using 0D engine - fuel test bench(MS: Modeling and Simulation,General Session Papers)

Abstract

This paper reports on the application of a simulation based Engine - Fuel Test Bench (EFTB) for studying performance of Diesel engine running on different fuels. The test bench is built around a zero-dimensional (0D) direct injection stochastic reactor model (DI-SRM) for engine in-cylinder processes simulation. Detailed kinetic models of fuel oxidation are used for emissions prediction. A general purpose optimizer supports the overall simulation process. To demonstrate capabilities of the test bench four different fuels have been simulated and compared to each other under Diesel conditions. Pure n-decane, pure n-heptane and blends of n-heptane with iso-octane and with toluene have been considered as of relevance to diesel fuel. The in-cylinder pressure, heat release rate, and exhaust emissions were the primary tracked engine parameters. Thanks to the low CPU costs, detailed description of fuel oxidation and high level of automation, the presented test-bench is well suited to investigate various aspects of engine-fuel interaction. In an efficient manner it allows comparing engine output performance and emissions depending on the applied fuel.