Fuel film thickness measurements using refractive index matching in a stratified-charge SI engine operated on E30 and alkylate fuels
Abstract
This paper shows fuel film measurements in a spark-ignited direct injection engine using refractive index matching (RIM). The RIM technique is applied to measure the fuel impingement of a high research octane number gasoline fuel with 30 vol% ethanol content at two intake pressures and coolant temperatures. Measurements are conducted for an alkylate fuel at one operating case, as well. It is shown that the fuel volume on the piston surface increases for lower intake pressure and lower coolant temperature and that the alkylate fuel shows very little spray impingement. The fuel films can be linked to increased soot emissions. A detailed description of the calibration technique is provided and measurement uncertainties are discussed. The dependency of the RIM signal on refractive index changes is measured. The RIM technique provides quantitative film thickness measurements up to 0.9 µm in this engine. Finally, for thicker films, semi-quantitative results of film thickness can be utilized to study the distribution of impinged fuel.
- Authors:
-
- Technische Univ. Darmstadt (Germany). Dept. of Reactive Flows and Measurement Technology (RSM)
- Sandia National Lab. (SNL-CA), Livermore, CA (United States)
- Sandia National Lab. (SNL-CA), Livermore, CA (United States); Univ. of Michigan, Ann Arbor, MI (United States)
- Beijing Inst. of Technology (China). School of Mechanical Engineering
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-CA), Livermore, CA (United States); Technische Univ. Darmstadt (Germany); Beijing Institute of Technology (China)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Sustainable Transportation Office. Bioenergy Technologies Office; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); USDOE National Nuclear Security Administration (NNSA); German Research Foundation (DFG); China Scholarship Council (CSC)
- OSTI Identifier:
- 1473928
- Report Number(s):
- SAND-2018-9957J
Journal ID: ISSN 0723-4864; 667784
- Grant/Contract Number:
- NA0003525; 201506035029
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Experiments in Fluids
- Additional Journal Information:
- Journal Volume: 59; Journal Issue: 3; Journal ID: ISSN 0723-4864
- Publisher:
- Springer
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING
Citation Formats
Ding, Carl-Philipp, Sjöberg, Magnus, Vuilleumier, David, Reuss, David L., He, Xu, and Böhm, Benjamin. Fuel film thickness measurements using refractive index matching in a stratified-charge SI engine operated on E30 and alkylate fuels. United States: N. p., 2018.
Web. doi:10.1007/s00348-018-2512-5.
Ding, Carl-Philipp, Sjöberg, Magnus, Vuilleumier, David, Reuss, David L., He, Xu, & Böhm, Benjamin. Fuel film thickness measurements using refractive index matching in a stratified-charge SI engine operated on E30 and alkylate fuels. United States. https://doi.org/10.1007/s00348-018-2512-5
Ding, Carl-Philipp, Sjöberg, Magnus, Vuilleumier, David, Reuss, David L., He, Xu, and Böhm, Benjamin. Mon .
"Fuel film thickness measurements using refractive index matching in a stratified-charge SI engine operated on E30 and alkylate fuels". United States. https://doi.org/10.1007/s00348-018-2512-5. https://www.osti.gov/servlets/purl/1473928.
@article{osti_1473928,
title = {Fuel film thickness measurements using refractive index matching in a stratified-charge SI engine operated on E30 and alkylate fuels},
author = {Ding, Carl-Philipp and Sjöberg, Magnus and Vuilleumier, David and Reuss, David L. and He, Xu and Böhm, Benjamin},
abstractNote = {This paper shows fuel film measurements in a spark-ignited direct injection engine using refractive index matching (RIM). The RIM technique is applied to measure the fuel impingement of a high research octane number gasoline fuel with 30 vol% ethanol content at two intake pressures and coolant temperatures. Measurements are conducted for an alkylate fuel at one operating case, as well. It is shown that the fuel volume on the piston surface increases for lower intake pressure and lower coolant temperature and that the alkylate fuel shows very little spray impingement. The fuel films can be linked to increased soot emissions. A detailed description of the calibration technique is provided and measurement uncertainties are discussed. The dependency of the RIM signal on refractive index changes is measured. The RIM technique provides quantitative film thickness measurements up to 0.9 µm in this engine. Finally, for thicker films, semi-quantitative results of film thickness can be utilized to study the distribution of impinged fuel.},
doi = {10.1007/s00348-018-2512-5},
journal = {Experiments in Fluids},
number = 3,
volume = 59,
place = {United States},
year = {Mon Feb 26 00:00:00 EST 2018},
month = {Mon Feb 26 00:00:00 EST 2018}
}
Web of Science
Figures / Tables:
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Works referencing / citing this record:
Experimental study on the boiling criterion of the fuel film formed from spray/wall impingement
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A numerical–experimental assessment of wall impingement models for spark-ignition direct-injection engines
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Effect of engine conditions and injection timing on piston-top fuel films for stratified direct-injection spark-ignition operation using E30
journal, September 2019
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Figures / Tables found in this record: