Abstract

The formation of soot in an n-heptane fuelled HCCI engine, operated at a rich equivalence ratio of 1.93, has been studied by means of in-cylinder snatch sampling as well as by applying a new engine model, which features a highly detailed description of soot. The study has been conducted by scientists of the Department of Chemical Engineering and Biotechnology at Cambridge University (UK), the Institute of Clean and Secure Energy at the University of Utah (USA), Ibiden and Toyota. This new computationally efficient model can provide aggregate and primary particle size distribution functions and detailed information on aggregate morphology and chemical composition such as images similar to those produced with TEMs.

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