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Erschienen in: Experiments in Fluids 4/2010

01.10.2010 | Research Article

High-speed imaging for direct-injection gasoline engine research and development

verfasst von: Volker Sick, Michael C. Drake, Todd D. Fansler

Erschienen in: Experiments in Fluids | Ausgabe 4/2010

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Abstract

In recent years, new laser and camera technology have enabled the development of high-speed imaging diagnostics for measurements at frame rates commensurate with the time scales of turbulent mixing, combustion, and emission formation in internal combustion engines. The ability to study the evolution of in-cylinder flow, fuel/air mixing, ignition, and combustion within individual cycles and for many consecutive cycles provides new insights into the physics and chemistry of internal combustion engine performance. Data for model development and device development are obtained with unprecedented access to the identification of random events such as cycle to cycle variation and ignition instabilities. This paper summarizes high-speed diagnostics developments with a focus on application to spark-ignition direct-injection gasoline engines. A range of optical techniques is described along with examples of applications in research and near-production engines. Measurements of in-cylinder velocities were conducted with particle image velocimetry. The spray evolution was followed with Mie scattering. Quantitative fuel distributions were recorded with laser-induced fluorescence. Fuel impingement on surfaces was quantified with refractive index matching. Combined velocity and fuel measurements were used to study ignition reliability. Chemiluminescence techniques provided insights into the evolution of the spark plasma as well as the growing flame kernel. Chemiluminescence and black body radiation imaging yielded insights into the formation and oxidation of soot.

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Metadaten
Titel
High-speed imaging for direct-injection gasoline engine research and development
verfasst von
Volker Sick
Michael C. Drake
Todd D. Fansler
Publikationsdatum
01.10.2010
Verlag
Springer-Verlag
Erschienen in
Experiments in Fluids / Ausgabe 4/2010
Print ISSN: 0723-4864
Elektronische ISSN: 1432-1114
DOI
https://doi.org/10.1007/s00348-010-0891-3

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