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Journal Article

A Kinetic Modelling Study of Alcohols Operating Regimes in a HCCI Engine

Pursuing a sustainable energy scenario for transportation requires the blending of renewable oxygenated fuels such as alcohols into commercial hydrocarbon fuels. From a chemical kinetic perspective, this requires the accurate description of both hydrocarbon reference fuels (n-heptane, iso-octane, toluene, etc.) and oxygenated fuels chemistry. A recent systematic investigation of linear C2-C5 alcohols ignition in a rapid compression machine at p = 10-30 bar and T = 650- 900 K has extended the scarcity of fundamental data at such conditions, allowing for a revision of the low temperature chemistry for alcohol fuels in the POLIMI mechanism. Heavier alcohols such as n-butanol and n-pentanol present ignition characteristic of interest for application in HCCI engines, due to the presence of the hydroxyl moiety reducing their low temperature reactivity compared to the parent linear alkanes (i.e. higher octane number).
Technical Paper

Computational Chemistry Consortium: Surrogate fuel Mechanism Development, Pollutants Submechanisms and Components Library

The Computational Chemistry Consortium (C3) is dedicated to leading the advancement of combustion and emissions modeling in internal combustion engines. The C3 cluster combines the expertise of different groups involved in combustion research aiming to refine existing chemistry models and to develop more efficient tools for the generation of surrogate and multi-fuel mechanisms, and suitable mechanisms for CFD applications. In addition to the development of more accurate kinetic models for different components of interest in real fuels’ surrogates and for pollutants formation (NOx, PAHs, soot), the core activity of C3 is to develop a tool capable of merging high fidelity kinetics from different sources (i.e. different partners), resulting in a high-fidelity model for a specific application.