E100 Stratified Lean Combustion Analysis in a Wall-Air Guided Type GDI Optical Engine 2015-36-0269
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.
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. Download Citation
Author(s):
Roberto Berlini Rodrigues da Costa, Carlos Alberto Gomes, Rafael Lara Franco, Marcio Expedito Guzzo, Fabrício José Pacheco Pujatti
Affiliated:
Technology Center of Mobility - UFMG
Pages: 9
Event:
24th SAE Brasil International Congress and Display
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Engine efficiency
Lean burn engines
Fuel consumption
Fuel economy
Ethanol
Combustion and combustion processes
Exhaust emissions
Spark ignition engines
Imaging and visualization
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