The optical characterisation of spray and soot formation in a diesel engine

Lockett, R. D. & Greenhalgh, D. A. (2010). The optical characterisation of spray and soot formation in a diesel engine. Paper presented at the International Conference on Sustainable Combustion (SPEIC'10), 06 - 09 June 2010, Canary Islands.

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Laser sheet drop-sizing (LSD) measurements of a Diesel spray and simultaneous laser induced incandescence/Mie scattering measurements of soot have been performed in an optically accessible, common rail, 1.9 litre, turbo-charged, direct injection Diesel engine. The diesel fuel injectors employed in this study were prototype five hole injectors, supplied by R. Bosch. An oxygenated surrogate Diesel fuel with an estimated cetane number of 54 was employed in order to reduce the amount of soot formed during combustion. The prototype five-hole injector employed produced spray jets that were distinguishable in terms of the liquid volume fraction, drop-size distribution and spray penetration distance produced. The soot volume fraction formed during combustion was found to be correlated with drop-size distribution, and local soot particle size distribution was observed to be inversely correlated with local soot volume fraction.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: laser sheet dropsizing, laser induced fluorescence, Mie scattering, laser induced incandescence, laser diagnostics, diesel, spray, soot, engine, combustion fuel
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: School of Engineering & Mathematical Sciences > Engineering

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