This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
An experimental Study on the Effects of High-Pressure and Multiple Injection Strategies on DI Diesel Engine Emissions
Technical Paper
2013-01-0045
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
An experimental study on effects of high-pressure injections in conjunction with split fuel injections were conducted on an AVL single cylinder DI diesel engine. Various injection schemes were studied through the use of an electronically controlled, common rail injection system capable of injection pressures up to 200 MPa and a maximum of six injections per combustion event.
Up to 100 MPa of the fuel injection pressure, the higher injection pressures create faster combustion rates that result in the higher in-cylinder gas temperatures as compared to conventional low-pressure fuel injection systems. When applying high-pressure injections, particulate emission reductions of up to 50% were observed with no change in hydrocarbon emissions, reductions of CO emissions and only slightly higher NOx emissions.
Over 100 MPa, on the other hand, the higher injection pressures still reduced up to almost zero-level of particulate emission, at the same time that the NO emission is reduced greatly. Under these high-pressure injection conditions, strong correlations between soot and CO emissions were observed, which compete for the oxidizing OH species.
Multiple or split high-pressure injections also investigated as a means to decrease particulate emissions. As a result, a four-split injection strategy resulted in a 55% reduction in particulates and with little or no penalty on NOx emissions. The high pressure split injection strategy with EGR was more effective in reducing particulate and CO emissions simultaneously.
Recommended Content
Authors
Topic
Citation
Yang, S. and Chung, S., "An experimental Study on the Effects of High-Pressure and Multiple Injection Strategies on DI Diesel Engine Emissions," SAE Technical Paper 2013-01-0045, 2013, https://doi.org/10.4271/2013-01-0045.Also In
References
- Reitz , R. and Diwakar , R. Structure of High-Pressure Fuel Sprays SAE Technical Paper 870598 1987 10.4271/870598
- Varde , K. S. , and Watanabe , T. Characteristics of High Pressure Spray and Exhaust Emissions in a Single Cylinder DI Diesel Engine FISITA 2000 Korea June 12 15 2000
- Kato , T. , Tsujimura , K. , Shintani , M. , Minami , T. et al. Spray Characteristics and Combustion Improvement of D.I. Diesel Engine with High Pressure Fuel Injection SAE Technical Paper 890265 1989 10.4271/890265
- Montgomery , D. and Reitz , R. Six-Mode Cycle Evaluation of the Effect of EGR and Multiple Injections on Particulate and NOx Emissions from a D.I. Diesel Engine SAE Technical Paper 960316 1996 10.4271/960316
- Han , Z. , Uludogan , A. , Hampson , G. , and Reitz , R. Mechanism of Soot and NOx Emission Reduction Using Multiple-injection in a Diesel Engine SAE Technical Paper 960633 1996 10.4271/960633
- Su , T. , Patterson , M. , Reitz , R. , and Farrell , P. Experimental and Numerical Studies of High Pressure Multiple Injection Sprays SAE Technical Paper 960861 1996 10.4271/960861
- Hampson , G. and Reitz , R. Two-Color Imaging of In-Cylinder Soot Concentration and Temperature in a Heavy-Duty DI Diesel Engine with Comparison to Multidimensional Modeling for Single and Split Injections SAE Technical Paper 980524 1998 10.4271/980524
- Tow , T. , Pierpont , D. , and Reitz , R. Reducing Particulate and NOx Emissions by Using Multiple Injections in a Heavy Duty D.I. Diesel Engine SAE Technical Paper 940897 1994 10.4271/940897
- Akasaka , Y. and Sakurai , Y. Effects of Oxygenated Fuel and Cetane Improver on Exhaust Emission from Heavy-Duty DI Diesel Engines SAE Technical Paper 942023 1994 10.4271/942023
- Song , J. , Cheenkachorn , K. , Wang , J. , Perez , J. , Boehman , A. L. et al. Effect of Oxygenated Fuel on Combustion and Emissions in a Light-Duty Turbo Diesel Engine Energy & Fuels 16 2 294 301 2002 10.1021/ef010167t
- Ergenc , A. T. , Koca , D. O. , Abacioglu , M. Combustion Characteristics of a High Pressure Fuel Injected Single Cylinder Compression-Ignition Engine, Fuelled With Diesel-Ester Blends under Various Fuel Injection Advance Angles intl. journal of renewable energy research 2 2 236 242 2012
- Choi , C. Y. , Reitz , R. D. An experimental study on the effects of oxygenated fuel blends and multiple injection strategies on DI diesel engine emissions Fuel 78 11 1303 1317 1999 10.1016/S0016-2361(99)00058-7
- Minato , A. , Tanaka , T. , and Nishimura , T. Investigation of Premixed Lean Diesel Combustion with Ultra High Pressure Injection SAE Technical Paper 2005-01-0914 2005 10.4271/2005-01-0914
- 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
- Choi , C. Y. , Reitz , R. D. Modeling the Effects of Oxygenated Fuels and Split Injections on DI Diesel Engine Performance and Emissions Combustion Science and Technology 159 1 169 198 2000 10.1080/00102200008935782
- Koci , C. , Ra , Y. , Krieger , R. , Andrie , M. et al. Multiple- Event Fuel Injection Investigations in a Highly-Dilute Diesel Low Temperature Combustion Regime SAE Int. J. Engines 2 1 837 857 2009 10.4271/2009-01-0925
- Sarangi , A. , McTaggart-Cowan , G. , and Garner , C. The Effects of Intake Pressure on High EGR Low Temperature Diesel Engine Combustion SAE Technical Paper 2010-01-2145 2010 10.4271/2010-01-2145