This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Spray and Combustion of Diesel Fuel under Simulated Cold-Start Conditions at Various Ambient Temperatures
Technical Paper
2017-24-0069
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
The spray and combustion of diesel fuel were investigated to provide a better understanding of the evaporation and combustion process under the simulated cold-start condition of a diesel engine. The experiment was conducted in a constant volume combustion chamber and the engine cranking period was selected as the target ambient condition. Mie scattering and shadowgraph techniques were used to visualize the liquid- and vapor-phase of the fuel under evaporating non-combustion conditions (oxygen concentration=0%). In-chamber pressure and direct flame visualization were acquired for spray combustion conditions (oxygen concentration=21%). The fuel was injected at an injection pressure of 30 MPa, which is the typical pressure during the cranking period. The liquid length of the fuel at an ambient temperature of 573 K increased by about 14% compared to that at 663 K due to the lower ambient temperature and fuel temperature as well as the increased fuel density and viscosity from the lower fuel temperature. The vapor penetration of the fuel was also slightly increased at 573 K. However, the vapor phase area was reduced by about 30% at 573 K compared to that at 663 K, which is due to the deteriorated spray atomization and the lower ambient temperature. In the spray combustion condition, only part of the diesel spray was ignited at 573 K, while all of the spray was successfully ignited at 663 K. The ignition delay was increased at 573 K due to the increased injection delay, the deteriorated atomization, and the evaporation of the fuel. The heat release from the premixed combustion was reduced at 573 K, despite the increased ignition delay. This can be explained by the limited formation of the combustible fuel-air mixture as indicated by a reduced vapor-phase area. The heat release from the mixing-controlled combustion was also reduced at 573 K, which resulted in lowering the in-chamber pressure rise by about 42% compared to 663 K.
Authors
Topic
Citation
Park, H., Shin, J., and Bae, C., "Spray and Combustion of Diesel Fuel under Simulated Cold-Start Conditions at Various Ambient Temperatures," SAE Technical Paper 2017-24-0069, 2017, https://doi.org/10.4271/2017-24-0069.Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
Unnamed Dataset 2 | ||
Unnamed Dataset 3 |
Also In
References
- Favez , Jean-Yves , Martin Weilenmann , and Jan Stilli Cold start extra emissions as a function of engine stop time: evolution over the last 10 years Atmospheric Environment 43 5 2009 996 1007
- Weilenmann , Martin , Jean-Yves Favez , and Robert Alvarez Cold-start emissions of modern passenger cars at different low ambient temperatures and their evolution over vehicle legislation categories Atmospheric environment 43 15 2009
- Bielaczyc , P. , Szczotka A. , and Woodburn J. The effect of a low ambient temperature on the cold-start emissions and fuel consumption of passenger cars Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 225 9 2011 1253 1264
- Roberts , Andrew , Richard Brooks , and Philip Shipway Internal combustion engine cold-start efficiency: A review of the problem, causes and potential solutions Energy Conversion and Management 82 2014 327 350
- Pacaud , P. , Perrin , H. , and Laget , O. Cold Start on Diesel Engine: Is Low Compression Ratio Compatible with Cold Start Requirements? SAE Int. J. Engines 1 1 831 849 2009 10.4271/2008-01-1310
- Walter , B. , Perrin , H. , Dumas , J. , and Laget , O. Cold Operation with Optical and Numerical Investigations on a Low Compression Ratio Diesel Engine SAE Int. J. Engines 2 2 186 204 2010 10.4271/2009-01-2714
- Perrin , H. , Dumas , J. , Laget , O. , and Walter , B. Analysis of Combustion Process in Cold Operation with a Low Compression Ratio Diesel Engine SAE Int. J. Engines 3 1 1012 1032 2010 10.4271/2010-01-1267
- Pastor , J. V. , García-Oliver J. M. , Pastor J. M. , and Ramírez-Hernández J. G. Ignition and combustion development for high speed direct injection diesel engines under low temperature cold start conditions Fuel 90 4 2011 1556 1566
- Lindl , B. and Schmitz , H. Cold Start Equipment for Diesel Direct Injection Engines SAE Technical Paper 1999-01-1244 1999 10.4271/1999-01-1244
- Broatch , A. , Ruiz S. , Margot X. , and Gil A. Methodology to estimate the threshold in-cylinder temperature for self-ignition of fuel during cold start of Diesel engines Energy 35 5 2010 2251 2260
- Siebers , D. Liquid-Phase Fuel Penetration in Diesel Sprays SAE Technical Paper 980809 1998 10.4271/980809
- Higgins , B. , Mueller , C. , and Siebers , D. Measurements of Fuel Effects on Liquid-Phase Penetration in DI Sprays1 SAE Technical Paper 1999-01-0519 1999 10.4271/1999-01-0519
- Payri , Raul , García-Oliver Jose M. , Michele Bardi , and Julien Manin Fuel temperature influence on diesel sprays in inert and reacting conditions Applied Thermal Engineering 35 2012 185 195
- MacMillan , D. , La Rocca , A. , Shayler , P. , Morris , T. et al. Investigating the Effects of Multiple Pilot Injections on Stability at Cold Idle for a Dl Diesel Engine SAE Int. J. Engines 2 1 370 380 2009 10.4271/2009-01-0612
- Payri , F. , Broatch A. , Salavert J. M. , and Martín J. Investigation of Diesel combustion using multiple injection strategies for idling after cold start of passenger-car engines Experimental Thermal and Fluid Science 34 7 2010 857 865
- Hwang , Joonsik , Youngsoo Park , Choongsik Bae , Jinwoo Lee , and Soonchan Pyo Fuel temperature influence on spray and combustion characteristics in a constant volume combustion chamber (CVCC) under simulated engine operating conditions Fuel 160 2015 424 433
- Higgins , Brian , Siebers Dennis L. , and Allen Aradi Diesel-spray ignition and premixed-burn behavior No. 2000-01-0940 . SAE Technical Paper 2000
- Gonzalez Rafael C. , Woods Richard E. , and Eddins Steven L. Digital Image Processing Using MATLAB® McGraw Hill Education 2010
- Riazi , M. R. Characterization and properties of petroleum fractions 50 ASTM international 2005
- Daubert , Thomas E. , and Danner Ronald P. API technical data book-petroleum refining American Petroleum Institute (API), Washington DC 1997
- Salvador , F. J. , Gimeno J. , Carreres M. , and Crialesi-Esposito M. Fuel temperature influence on the performance of a last generation common-rail diesel ballistic injector. Part I: Experimental mass flow rate measurements and discussion Energy Conversion and Management 114 2016 364 375
- Moon , Seoksu , Taku Tsujimura , Yuan Gao , Suhan Park , Jin Wang , Naoki Kurimoto , Yoshiaki Nishijima , and Mitsuharu Oguma Biodiesel effects on transient needle motion and near-exit flow characteristics of a high-pressure diesel injector International Journal of Engine Research 15 4 2014 504 518
- Elkotb , M. M. Fuel atomization for spray modelling Progress in Energy and Combustion Science 8 1 1982 61 91