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A Late Injection Combustion Strategy Using a Novel Ramped Combustion System
Technical Paper
2017-24-0090
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Traffic related NOx and particle emission remain a significant concern particularly in the urban environment. Electrification offers a medium to long term solution, but there remains a need to significantly reduce internal combustion engine emissions in the short and medium term, and potentially in the long term for long range inter city transportation. Late injection low temperature combustion (LTC) has the potential to achieve ultra-low emissions levels in a compression ignition engine by increasing the lean pre-mixed burn fraction. However, significant quantities of diluent are normally required to achieve the required delay in ignition and pre-mixing to achieve LTC. This results in high boost requirements, increased pumping work and the complexity of the air handling system and potentially adversely impacting fuel economy. In this paper, results from a single cylinder light duty research engine are presented using a novel ramped combustion chamber focused at mid to high engine loads. The ramped combustion chamber improves mixing and enables more retarded injection timings than those possible on conventional bowl designs. This combustion strategy has enabled LTC conditions to be achieved at lower dilution rates, typically 20-30% at loads up to 15bar IMEP. CFD analysis of the air-fuel interaction indicates the ramped bowl effectively deflects fuel away from the squish region enabling very late injection timings. One dimensional analysis of the engine system was used to investigate the potential of late exhaust valve opening in improving work recovery, resulting in improved fuel consumption over the baseline LTC valve timings.
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Morgan, R., Heikal, M., and Pike-Wilson, E., "A Late Injection Combustion Strategy Using a Novel Ramped Combustion System," SAE Technical Paper 2017-24-0090, 2017, https://doi.org/10.4271/2017-24-0090.Data Sets - Support Documents
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References
- Miranda , A.I. et al. A cost-efficiency and health benefit approach to improve urban air quality Science of The Total Environment 2016 569-570 342 351
- Tutuianu , M. et al. Development of the World-wide harmonized Light duty Test Cycle (WLTC) and a possible pathway for its introduction in the European legislation Transportation Research Part D: Transport and Environment 2015 40 61 75
- http://europa.eu/rapid/press-release_IP-15-5945_en.htm 5 6 2017
- Agarwal , A.K. , Singh A.P. , and Maurya R.K. Evolution, challenges and path forward for low temperature combustion engines Progress in Energy and Combustion Science 2017 61 1 56
- Reitz , R.D. and Duraisamy G. Review of high efficiency and clean reactivity controlled compression ignition (RCCI) combustion in internal combustion engines Progress in Energy and Combustion Science 2015 46 12 71
- Saxena , S. and Bedoya I.D. Fundamental phenomena affecting low temperature combustion and HCCI engines, high load limits and strategies for extending these limits Progress in Energy and Combustion Science 2013 39 5 457 488
- Musculus , M.P.B. , Miles P.C. , and Pickett L.M. Conceptual models for partially premixed low-temperature diesel combustion Progress in Energy and Combustion Science 2013 39 2-3 246 283
- Dec , J. A Conceptual Model of DI Diesel Combustion Based on Laser-Sheet Imaging* SAE Technical Paper 970873 1997 10.4271/970873
- Arnone , L. , Manelli , S. , Bonanni , M. , Such , C. et al. Performance Development of a New Tier 4 Final Engine Family below 56 kW SAE Technical Paper 2013-24-0125 2013 10.4271/2013-24-0125
- Natti , K. , Sinha , A. , Hoerter , C. , Andersson , P. et al. Studies on the Impact of 300 MPa Injection Pressure on Engine Performance, Gaseous and Particulate Emissions SAE Int. J. Engines 6 1 336 351 2013 10.4271/2013-01-0897
- Styron , J. , Baldwin , B. , Fulton , B. , Ives , D. et al. Ford 2011 6.7L Power Stroke® Diesel Engine Combustion System Development SAE Technical Paper 2011-01-0415 2011 10.4271/2011-01-0415
- Higginson , S. A parametric study of combustion system design for a light duty diesel engine 2015 University of Brighton
- Laguitton , O. The effect of compression ratio on exhasut emissiosn from a PCCI Diesel engine 2007 University of Brighton
- Watson , N. , Pilley , A. , and Marzouk , M. A Combustion Correlation for Diesel Engine Simulation SAE Technical Paper 800029 1980 10.4271/800029