Abstract
At the University of Cambridge, the formation of soot was studied in an n-heptane fuelled Homogeneous Charge Compression Ignition (HCCI) engine, operated at a rich equivalence ratio of 1.93, by means of in-cylinder snatch sampling as well as by applying a new engine model which features a highly detailed description of soot. This new computationally efficient model is capable of providing not only averaged quantities as functions of crank angle like soot mass, number density, volume fraction, aggregate diameter, and the number of primary particles per aggregate for example, but also aggregate and primary particle size distribution functions and additionally can give detailed information on aggregate morphology and chemical composition.
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