This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Experimental Study of Post Injection Scheduling for Soot Reduction in a Light-Duty Turbodiesel Engine
Technical Paper
2016-01-0726
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
This experimental study involves optimization of the scheduling of diesel post injections to reduce soot emissions from a light-duty diesel engine. Previous work has shown that certain post injection schedules can reduce engine-out soot emissions when compared to conventional injection schedules for the same engine load. The purpose of this study is to investigate the impact of post injection scheduling for a range of engine conditions on a light duty multicylinder turbodiesel engine (1.9L GM ZDTH). For each engine operating condition, a test grid was developed so that only two variables (post injection duration and the commanded dwell time between main injection and post injection) were varied, with all other conditions held constant, in order to isolate the effects of the post injection schedule. Results have identified two distinct regimes of post injection schedules that reduce soot emissions. In one regime, the post injection timing is critical, with the size of the post injection having only a minor effect on the results. This “close-coupled” regime reduced soot by up to 22%, with reductions in fuel consumption of up to 3%, but at the price of a 7% increase in NOx. In the other regime, the size of the post injection is critical, with the timing of the post injection having only a minor effect on the results. This “long-dwell” regime reduced soot by up to 40% and NOx by up to 5%, but with no significant improvement in fuel consumption and up to 13% increases in total hydrocarbons.
Recommended Content
Authors
Topic
Citation
Martin, J., Sun, C., Boehman, A., and O'Connor, J., "Experimental Study of Post Injection Scheduling for Soot Reduction in a Light-Duty Turbodiesel Engine," SAE Technical Paper 2016-01-0726, 2016, https://doi.org/10.4271/2016-01-0726.Also In
References
- Kennedy , I.M. The health effects of combustion-generated aerosols Proceedings of the Combustion Institute 31 2 2757 2770 2007 10.1016/j.proci.2006.08.116
- Sydbom , A. , Blomberg , A. , Parnia , S. , Stenfors , N. et al. Health effects of diesel exhaust emissions European Respiratory Journal 17 4 733 746 2001
- Myung , C. and Park , S. Exhaust nanoparticle emissions from internal combustion engines: A review International Journal of Automotive Technology 13 1 9 22 2012 10.1007/s12239-012-0002-y
- Tree , D.R. and Svensson , K.I. Soot processes in compression ignition engines Progress in Energy and Combustion Science 33 3 272 309 2007 10.1016/j.pecs.2006.03.002
- Akihama , K. , Takatori , Y. , Inagaki , K. , Sasaki , S. et al. Mechanism of the Smokeless Rich Diesel Combustion by Reducing Temperature SAE Technical Paper 2001-01-0655 2001 10.4271/2001-01-0655
- O'Connor , J. and Musculus , M. Post Injections for Soot Reduction in Diesel Engines: A Review of Current Understanding SAE Int. J. Engines 6 1 400 421 2013 10.4271/2013-01-0917
- Horibe , N. , Komizo , T. , Sumimoto , T. , Wang , H. et al. Smoke Reduction Effects by Post Injection for Various Injection Parameters and Combustion Chamber Shapes in a Diesel Engine SAE Technical Paper 2014-01-2634 2014 10.4271/2014-01-2634
- Hountalas , D. , Lamaris , V. , Pariotis , E. , and Ofner , H. Parametric Study Based on a Phenomenological Model to Investigate the Effect of Post Fuel Injection on HDDI Diesel Engine Performance and Emissions-Model Validation Using Experimental Data SAE Technical Paper 2008-01-0641 2008 10.4271/2008-01-0641
- Yun , H. , Sun , Y. , and Reitz , R.D. An experimental and numerical investigation on the effect of post injection strategies on combustion and emissions in the low-temperature diesel combustion regime ASME 2005 Internal Combustion Engine Division Spring Technical Conference April 5-7, 2005 10.1115/ICES2005-1043
- O’Connor , J. and Musculus , M. Effect of Load on Close-Coupled Post-Injection Efficacy for Soot Reduction in an Optical Heavy-Duty Diesel Research Engine Journal of Engineering for Gas Turbines and Power 136 10 101509 2014 10.1115/1.4027276
- O'Connor , J. and Musculus , M. Effects of exhaust gas recirculation and load on soot in a heavy-duty optical diesel engine with close-coupled post injections for high-efficiency combustion phasing International Journal of Engine Research 0 0 1 23 2013 10.1177/1468087413488767
- Payri , F. , Benajes , J. , Pastor , J. , and Molina , S. Influence of the Post-Injection Pattern on Performance, Soot and NOx Emissions in a HD Diesel Engine SAE Technical Paper 2002-01-0502 2002 10.4271/2002-01-0502
- Hotta , Y. , Inayoshi , M. , Nakakita , K. , Fujiwara , K. et al. Achieving Lower Exhaust Emissions and Better Performance in an HSDI Diesel Engine with Multiple Injection SAE Technical Paper 2005-01-0928 2005 10.4271/2005-01-0928
- Ganser , M. Common Rail Injectors for 2000 bar and Beyond SAE Technical Paper 2000-01-0706 2000 10.4271/2000-01-0706
- Chen , S. Simultaneous Reduction of NOx and Particulate Emissions by Using Multiple Injections in a Small Diesel Engine SAE Technical Paper 2000-01-3084 2000 10.4271/2000-01-3084
- Desantes , J. , Arrègle , J. , López , J. , and García , A. A Comprehensive Study of Diesel Combustion and Emissions with Post-injection SAE Technical Paper 2007-01-0915 2007 10.4271/2007-01-0915
- 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
- Bobba , M. , Musculus , M. , and Neel , W. Effect of Post Injections on In-Cylinder and Exhaust Soot for Low-Temperature Combustion in a Heavy-Duty Diesel Engine SAE Int. J. Engines 3 1 496 516 2010 10.4271/2010-01-0612
- Vander Wal , R.L. and Tomasek , A.J. Soot nanostructure: dependence upon synthesis conditions Combustion and Flame 136 1 129 140 2004 10.1016/j.combustflame.2003.09.008