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The Influence of Fuel Boiling Temperature on Common Rail Spray Penetration and Mixture Formation for Ethanol and Propylene-Glycol
Technical Paper
2008-01-0934
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
An intricate experimental investigation of Common-Rail-Sprays were done using a High Pressure Chamber, a Common-Rail-Injection-System as well as three optical measurement techniques. Ethanol and Propylene-Glycol (of purity for spectroscopic applications >99.9%) were used as fuels. The experimental boundary conditions of the high pressure chamber were up to 5 MPa and 800K. In detail an optical shadowgraph imaging and Mie-scattering technique were used. Liquid and gas phase spray penetration are investigated for fuels with low and high volatility respectively boiling temperature (propylene glycol, ethanol) for a variation of ambient gas phase temperature and density. Spatial information of the mixing process of both fuels is obtained by the 1D spontaneous Raman scattering (1D-RS) technique. That technique provides quantitative mass fraction respectively fuel-air ratio data [1] over a wide temperature and pressure range without the need of a tracer as for many techniques that are based on fluorescence (LIF). A briefly discussion as well as a comparison of these results of the two investigated fuels will be done.
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Citation
Spiekermann, P., Jerzembeck, S., and Peters, N., "The Influence of Fuel Boiling Temperature on Common Rail Spray Penetration and Mixture Formation for Ethanol and Propylene-Glycol," SAE Technical Paper 2008-01-0934, 2008, https://doi.org/10.4271/2008-01-0934.Also In
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