This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Injection Strategy to Enhance Mixture Formation and Combustion of Fuel Spray in Diesel Engine
Technical Paper
2018-01-0241
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
Increasing the injection pressure and splitting the injection stage are the major approaches for a diesel engine to facilitate the fuel-air mixture formation process, which determines the subsequent combustion and emission formation. In this study, the free spray was injected by a single-hole nozzle with a hole-diameter of 0.111 mm. The impinging spray, formed by a two-dimensional (2D) piston cavity having the same shape as a small-bore diesel engine, was also investigated. The injection process was performed by both with and without pre-injection. The main injection was carried out either as a single main injection with injection pressure of 100 MPa (Pre + S100) or a split main injection with 160 MPa defined by the mass fraction ratio of 3:1 (Pre + D160_3-1). The tracer Laser Absorption Scattering (LAS) technique was adopted to observe the spray mixture formation process. The ignition delay/location and the soot formation in the spray flame were analyzed by the two-color method. Two ambient gas strategies, 21% and 15% O2, were adopted in the combustion process to investigate the effect of O2 concentration. The experimental results revealed that the vapor distribution of split injection was much more homogeneous than that of the single one. High soot concentration and low temperature appeared near the cavity wall region under the three injection strategies. The second main injection caught up with the previous injection’s flame, which deteriorated the combustion and resulted in higher soot generation. Low O2 concentration increased the soot mass and resulted in longer combustion duration. However, interestingly, it deteriorated the soot formation process through the soot index.
Recommended Content
Authors
Topic
Citation
Yang, K., YASAKI, S., Nishida, K., and Ogata, Y., "Injection Strategy to Enhance Mixture Formation and Combustion of Fuel Spray in Diesel Engine," SAE Technical Paper 2018-01-0241, 2018, https://doi.org/10.4271/2018-01-0241.Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| Unnamed Dataset 1 |
Also In
References
- Zurlo , J. and Chigier , N. Impinging Diesel Spray Dynamics Atomization and Sprays 1 303 318 1991
- Senda , J. , Tanabe , Y. , Fujimoto , H. , and Fukami , Y. Vizualization of Evaporative Diesel Spray Impinging Upon Wall Surface by Exciplex Fluorescence Method SAE Technical Paper 920578 1992 10.4271/920578
- Cossall , G. , Coghe , A. , and Brunello , G. Effect of Spray-Wall Interaction on Air Entrainment in a Transient Diesel Spray SAE Technical Paper 930920 1993 10.4271/930920
- Tomonaga , T. , Mural , K. , Takano , T. , and Sami , H. A Study on Combustion Behaviors of a Diesel Fuel Spray Impinging on a Wall SAE Technical Paper 960028 1996 10.4271/960028
- Wang , X.G. , Huang , Z. , Zhang , W. , Kuti , O.A. et al. Effects of Ultra-High Injection Pressure and Micro-Hole Nozzle on Flame Structure and Soot Formation of Impinging Diesel Spray Applied Energy 88 1620 1628 2011
- Dec , J. and Tree , D. Diffusion-Flame/Wall Interactions in a Heavy-Duty DI Diesel Engine SAE Technical Paper 2001-01-1295 2001 10.4271/2001-01-1295
- Jakob , M.H. and Janssen , T. Simultaneous High-Speed Visualization of Soot Luminosity and OH∗ Chemiluminescence of Alternative-Fuel Combustion in a HSDI Diesel Engine under Realistic Operating Conditions Combustion and Flame 159 2516 2529 2012
- Li , K. , Nishida , K. , Ogata , Y. , and Shi , B. Effect of Flat-Wall Impingement on Diesel Spray Combustion Proc IMechE Part D: Journal of Automobile Engineering 229 5 535 549 2015
- Bruneaux , G. Mixing Process in High Pressure Diesel Jets by Normalized Laser Induced Exciplex Fluorescence Part II: Wall Impinging Versus Free Jet SAE Technical Paper 2005-01-2097 2005 10.4271/2005-01-2097
- Montanaro , A. , Allocca , L. , Lazzaro , M. , and Meccariello , G. Vapor and Liquid Phases of the ECN Spray G Impacting on a Flat Wall at Engine-like Conditions SAE Technical Paper 2016-01-2199 2016 10.4271/2016-01-2199
- Li , K. , Dong , P. , Matsuo , T. , and Shi , B. Characteristics of Diesel Spray Flame Under Flat Wall Impinging Condition-LAS, OH* Chemiluminescence and Two Color Pyrometry Results SAE 2014-01-2636 2014 10.4271/2014-01-2636
- Lopez , J. and Pickett , L. 2004
- Pickett , L. and Lopez , J. Jet-Wall Interaction Effects on Diesel Combustion and Soot Formation SAE Technical Paper 2005-01-0921 2005 10.4271/2005-01-0921
- Wang , X. , Huang , Z. , Zhang , W. , Kuti , O.A. et al. Effects of Ultra-High Injection Pressure and Micro-Hole Nozzle on Flame Structure and Soot Formation of Impinging Diesel Spray Applied Energy 2011
- Dec , J. and Tree , D. Diffusion-Flame Interactions in a Heavy-Duty DI Disel Engine SAE Technical Paper 2001-01-1295 2001 10.4271/2001-01-1295
- Azetsu , A. , Sasaki , Y. , Nishiyama , Y. , and Nagashima , Y. Effects of Ambient O2 Concentration and Pressure on Combustion Characteristics of Diesel Spray SAE Technical Paper 2015-01-1831 2015 10.4271/2015-01-1831
- Kuribayashi , M. , Mizutani , Y. , Ishizuka , Y. , Taki , N. et al. Effects of Ambient Oxygen Concentration on Soot Processes in Diesel Spray Flame - A Qualitative Comparison between TEM Analysis and LII/Scattering Laser Measurements SAE Technical Paper 2014-01-2642 7 693 703 2015 10.4271/2014-01-2642
- Carlucci , A. , Ficarella , P. , Ficarella , A. , and Laforgia , D. Effects on Combustion and Emissions of Early and Pilot Fuel Injections in Diesel Engines International Journal of Engine Research 6 1 43 60 2005
- Sperl , A. The Influence of Post-Injection Strategies on the Emissions of Soot and Particulate Matter in Heavy Duty EuroV Diesel Engine SAE Paper 2011-36-0350 2011 10.4271/2011-36-0350
- Fang , Q. , Fang , J. , Zhuang , J. , and Huang , Z. Influences of Pilot Injection and Exhaust Gas Recirculation (EGR) on Combustion and Emissions in a HCCI-DI Combustion Engine Applied Thermal Engineering 48 97 104 2012
- Zhuang , J. , Qiao , X. , Bai , J. , and Hu , Z. Effect of Injection-Strategy on Combustion, Performance and Emission Characteristics in a DI-Diesel Engine Fueled with Diesel from Direct Coal Liquefaction Fuel 121 141 148 2014
- Cheng , X. , Chen , L. , Yan , F. , Hong , G. et al. Investigations of Split Injection Strategies for the Improvement of Combustion and Soot Emissions Characteristics Based on the Two-Color Method in a Heavy-Duty Diesel Engine SAE Technical Paper 2013-01-2523 2013 10.4271/2013-01-2523
- Nishida , K. , Imanishi , H. , Sato , T. et al. Wall Impingement Behavior of the Diesel Spray with Split Injection JSAE Transaction 30 3 17 23 1999
- Kang , Y. , Hirotaka , Y. , Keiya , N. , Youichi , O. et al. Effect of Split Injection on Mixture Formation and Combustion Processes of Diesel Spray Injected into Two-Dimensional Piston Cavity Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 095440701772424 2017 10.1177/0954407017724246
- Seo , J. , Lee , J.S. , Choi , K.H. , Kim , H.Y. et al. Numerical Investigation of the Combustion Characteristics and Wall Impingement with Dependence on Split-Injection Strategies from a Gasoline Direct-Injection Spark Ignition Engine Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 227 11 1518 1535 November 2013
- Nishioka , Y. , Tomoda , H. , Nishida , K. , Ogata , Y. et al. Combustion Characteristics of Diesel Spray with Temporally-Splitting High-Pressure Injection JSAE Paper 20159825/SAE Paper 2015-32-0825 2015
- Suzuki , M. , Nishida , K. , and Hiroyasu , H. Simultaneous Concentration Measurement of Vapor and Liquid in an Evaporating Diesel Spray SAE Paper 930863 1993 10.4271/930863
- Zhang , Y. , Nishida , K. , and Yoshizaki , T. Quantitative Measurement of Droplets and Vapor Concentration Distributions in Diesel Sprays by Processing UV and Visible Images SAE Technical Paper 2001-01-1294 2001 10.4271/2011-01-1294