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E100 Stratified Lean Combustion Analysis in a Wall-Air Guided Type GDI Optical Engine
Technical Paper
2015-36-0269
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Gasoline direct injection (GDI) engines have very attractive potential for improving fuel economy and exhaust emissions, especially disadvantages of increased fuel consumption at part load. In this research, a study has been made on the investigations of stratified lean combustion in a wall-air guided type spark-ignition single cylinder optical research engine. Experiments were conducted at constant load (NIMEP 3 bar) using ethanol as fuel, for a wide range of injection, ignition and mixture formation parameters. Engine efficiency and combustion stability were evaluated at each excess air ratio. Optical visualization illustrated the spray behavior and flame propagation. Specific fuel consumption improvement was achieved with lean burn mixtures. Thus, combustion analysis data based on in-cylinder pressure measurement provide useful data for ethanol GDI engine development.
Authors
- Roberto Berlini Rodrigues da Costa - Technology Center of Mobility - UFMG
- Carlos Alberto Gomes - Technology Center of Mobility - UFMG
- Rafael Lara Franco - Technology Center of Mobility - UFMG
- Marcio Expedito Guzzo - Technology Center of Mobility - UFMG
- Fabrício José Pacheco Pujatti - Technology Center of Mobility - UFMG
Topic
Citation
da Costa, R., Gomes, C., Franco, R., Guzzo, M. et al., "E100 Stratified Lean Combustion Analysis in a Wall-Air Guided Type GDI Optical Engine," SAE Technical Paper 2015-36-0269, 2015, https://doi.org/10.4271/2015-36-0269.Also In
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