This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Influence of the Injector Geometry at 250 MPa Injection in a Light-Duty Diesel Engine
Technical Paper
2017-01-0693
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
This paper investigated the influence of the injector nozzle geometry on fuel consumption and exhaust emission characteristics of a light-duty diesel engine with 250 MPa injection. The engine used for the experiment was the 0.4L single-cylinder compression ignition engine. The diesel fuel injection equipment was operated under 250MPa injection pressure. Three injectors with nozzle hole number of 8 to 10 were compared. As the nozzle number of the injector increased, the orifice diameter decreased 105 μm to 95 μm. The ignition delay was shorter with larger nozzle number and smaller orifice diameter. Without EGR, the particulate matter(PM) emission was lower with larger nozzle hole number. This result shows that the atomization of the fuel was improved with the smaller orifice diameter and the fuel spray area was kept same with larger nozzle number. However, the NOx-PM trade-offs of three injectors were similar at higher EGR rate and higher injection pressure. The effect of high injection pressure was dominant for reducing PM emissions, and the effect of nozzle geometry on the PM emissions wasn’t distinguishable at these conditions. The deeper penetration from larger nozzle orifice diameter was also beneficial to reduce the PM emissions under this condition. The indicated specific fuel consumptions of three injectors were on the same level because of their identical fuel volumetric flow rates and similar in-cylinder pressure traces. Also, the effect of nozzle hole number with the same orifice diameter (95 μm) was identified with 8- and 10-hole injectors. The higher fuel injection rate and increased nozzle and spray number from 8 to 10 resulted in the lower fuel consumption and PM emission. This research provides a standard on the optimal design of hole number and diameter in automotive engine injector nozzles.
Recommended Content
Authors
Topic
Citation
Kang, S., Cho, W., Bae, C., and Kim, Y., "Influence of the Injector Geometry at 250 MPa Injection in a Light-Duty Diesel Engine," SAE Technical Paper 2017-01-0693, 2017, https://doi.org/10.4271/2017-01-0693.Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
Unnamed Dataset 2 | ||
Unnamed Dataset 3 |
Also In
References
- Graham , M. , Crossley , S. , Harcombe , T. , Keeler , N. et al. Beyond Euro VI - Development of A Next Generation Fuel Injector for Commercial Vehicles SAE Technical Paper 2014-01-1435 2014 10.4271/2014-01-1435
- Beduneau , J.-L. , Cardon , C. , Meissonnier , G. , Uberti Bona , M. , Voigt , P. , Bercher , P. , and Schiffgens , H.-J. DELPHI NEW DIESEL COMMON RAIL SYSTEM FAMILY Internationales Wiener Motorensymposium 2014 2014
- Morgan , R. , Banks , A. , Auld , A. , Heikal , M. et al. The Benefits of High Injection Pressure on Future Heavy Duty Engine Performance SAE Technical Paper 2015-24-2441 2015 10.4271/2015-24-2441
- Tao , F. and Bergstrand , P. Effect of Ultra-High Injection Pressure on Diesel Ignition and Flame under High-Boost Conditions SAE Technical Paper 2008-01-1603 2008 10.4271/2008-01-1603
- Wloka , J. , Pflaum , S. , and Wachtmeister , G. Potential and Challenges of a 3000 Bar Common-Rail Injection System Considering Engine Behavior and Emission Level SAE Int. J. Engines 3 1 801 813 2010 10.4271/2010-01-1131
- Dodge , L. , Simescu , S. , Neely , G. , Maymar , M. et al. Effect of Small Holes and High Injection Pressures on Diesel Engine Combustion SAE Technical Paper 2002-01-0494 2002 10.4271/2002-01-0494
- Lengenfelder , T. , Barba , C. , Gerhardt , J. , Maier , R. , Schmid , L. , and Stengele , M. Designing the Future - Efficient BOSCH Fuel Injection Systems for Commercial Vehicles 2014 Wiener Symposium 2014
- Rente , T. , Gjirja , S. , and Denbratt , I. Experimental Study on the Influence of Nozzle Orifice Number on Combustion and Emissions Formation of a Heavy Duty DI Diesel Engine Presentation at SAE International 6th International Conference on Engines for Automobile 2003
- Bergstrand , P. and Denbratt , I. Diesel Combustion with Reduced Nozzle Orifice Diameter SAE Technical Paper 2001-01-2010 2001 10.4271/2001-01-2010
- Kim , B. , Yoon , W. , Ryu , S. , and Ha , J. Effect of the Injector Nozzle Hole Diameter and Number on the Spray Characteristics and the Combustion Performance in Medium-Speed Diesel Marine Engines SAE Technical Paper 2005-01-3853 2005 10.4271/2005-01-3853
- Millo , F. , Pautasso , E. , Delneri , D. , and Troberg , M. A DoE Analysis on the Effects of Compression Ratio, Injection Timing, Injector Nozzle Hole Size and Number on Performance and Emissions in a Diesel Marine Engine SAE Technical Paper 2007-01-0670 2007 10.4271/2007-01-0670
- Benajes , J. , Molina , S. , De Rudder , K. , Maroteaux , D. , and Hamouda , H.B.H. The use of micro-orifice nozzles and swirl in a small HSDI engine operating at a late split-injection LTC regime Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 220 12 1807 1817 2006 10.1243/09544070jauto383
- Heywood , J.B. Internal combustion engine fundamentals McGraw Hill Higher Education New York 9780070286375 1988
- Kuhnert , S. , Wagner , U. , Spicher , U. , Haas , S. et al. Influence of Injection Nozzle Hole Diameter on Highly Premixed and Low Temperature Diesel Combustion and Full Load Behavior SAE Technical Paper 2010-01-2109 2010 10.4271/2010-01-2109
- Bermúdez , V. , Luján , J.M. , Serrano , J.R. , and Pla , B. Transient particle emission measurement with optical techniques Measurement Science and Technology 19 6 065404 2008 10.1088/0957-0233/19/6/065404
- Cho , W. , Park , Y. , Yu , J. , and Kim , Y. Effects of Ultra-High Injection Pressure and Micro-Hole Nozzle on Diesel Spray Characteristics under Evaporating Condition 13th ICLASS-2015 2015
- Zhang , W. , Tian , J. , and Nishida , K. Effects of Nozzle Hole Diameter and Injection Pressure on Flame Lift-Off and Soot Formation in D.I. Diesel Combustion SAE Technical Paper 2011-01-1813 2011 10.4271/2011-01-1813
- Nishida , K. , Zhang , W. , and Manabe , T. Effects of Micro-Hole and Ultra-High Injection Pressure on Mixture Properties of D.I. Diesel Spray SAE Technical Paper 2007-01-1890 2007 10.4271/2007-01-1890
- Zhang , W. , Tian , J. , and Nishida , K. Effects of Nozzle Hole Diameter and Injection Pressure on Flame Lift-Off and Soot Formation in D.I. Diesel Combustion SAE Technical Paper 2011-01-1813 2011 10.4271/2011-01-1813
- Sjöblom , J. Use of late IVC and EGR to enhance diesel engine optimization Sustainable Automotive Technologies 2014 67 76 2015 10.1007/978-3-319-17999-5_6
- Liu , H. , Zheng , Z. , Yue , L. , Kong , L. et al. Effects of Fuel Volatility on Combustion and Emissions over a Wide Range of EGR Rates in a Diesel Engine SAE Technical Paper 2014-01-2659 2014 10.4271/2014-01-2659
- Karra , P. and Kong , S. Diesel Emission Characteristics Using High Injection Pressure with Converging Nozzles in a Medium-Duty Engine SAE Int. J. Fuels Lubr. 1 1 578 592 2009 10.4271/2008-01-1085