Characterization of Methanol and Ethanol Sprays from Different DI Injectors by Using Mie-scattering and Laser Induced Fluorescence at Potential Engine Cold-start Conditions

2010-01-0602

04/12/2010

Event
SAE 2010 World Congress & Exhibition
Authors Abstract
Content
A laser sheet imaging system with Mie-scattering and Laser Induced Fluorescence (LIF) was used to investigate the spray characteristics of gasoline, methanol and ethanol fuels. A range of conditions found in today's gasoline engines were investigated including that observed during engine cold-start. Both a swirl injector and a multi-hole fuel injector were examined for each of the three fuels.
A combination of the second harmonic (532 nm) and the fourth harmonic (266 nm) was generated simultaneously using a Nd:YAG laser system to illuminate the spray. The Mie-scattering technique was used to characterize the liquid phase of the spray while the LIF technique was used to detect a combination of liquid and vapor phases. While gasoline naturally fluoresced, the dopant TEA was added to the methanol and ethanol fuels as a fuel tracer. The Mie-scattering and LIF signals were captured simultaneously using a CCD camera along with an image doubler. By comparing the Mie-scattering and LIF images for each fuel and ambient condition, the spray structure was qualitatively characterized for the swirl and the multi-hole fuel injectors.
Meta TagsDetails
DOI
https://doi.org/10.4271/2010-01-0602
Pages
11
Citation
Zeng, W., Xu, M., Zhang, M., Zhang, Y. et al., "Characterization of Methanol and Ethanol Sprays from Different DI Injectors by Using Mie-scattering and Laser Induced Fluorescence at Potential Engine Cold-start Conditions," SAE Technical Paper 2010-01-0602, 2010, https://doi.org/10.4271/2010-01-0602.
Additional Details
Publisher
Published
Apr 12, 2010
Product Code
2010-01-0602
Content Type
Technical Paper
Language
English