The paper describes a study of cold-flow air motion in a single cylinder of a small indirect-injection (IDI) diesel engine during the compression and expansion strokes. Computational Fluid Dynamics is used to examine the effect of moving the cold-starting aid ('glow-plug'), and the effect of engine speed on swirl and turbulence. The sensitivity of the solution to the computational mesh-density, and numerical differencing scheme is investigated. The study has shown that the predicted flow velocities and turbulence levels are sensitive to mesh density and differencing scheme.
CFD study of air motion in a passenger car IDI diesel engine
Eine Untersuchung mittels rechnergestützter Strömungsdynamik über die Luftbewegung in einem PKW-Dieselmotor mit indirekter Kraftstoffeinspritzung
1993
8 Seiten, 11 Bilder, 4 Tabellen, 8 Quellen
Conference paper
English
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