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Research Papers: Gas Turbines: Combustion, Fuels, and Emissions

High Load (21 Bar IMEP) Dual Fuel RCCI Combustion Using Dual Direct Injection

[+] Author and Article Information
Jae Hyung Lim

Mem. ASME
Engine Research Center,
University of Wisconsin–Madison,
1500 Engineering Drive,
Madison, WI 53706
e-mail: jlim33@wisc.edu

Rolf D. Reitz

Engine Research Center,
University of Wisconsin–Madison,
1500 Engineering Drive,
Madison, WI 53706
e-mail: reitz@engr.wisc.edu

1Corresponding author.

Contributed by the Combustion and Fuels Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received February 17, 2014; final manuscript received March 18, 2014; published online May 9, 2014. Editor: David Wisler.

J. Eng. Gas Turbines Power 136(10), 101514 (May 09, 2014) (10 pages) Paper No: GTP-14-1106; doi: 10.1115/1.4027361 History: Received February 17, 2014; Revised March 18, 2014

Dual-fuel reactivity controlled compression ignition (RCCI) combustion has shown high thermal efficiency and superior controllability with low NOx and soot emissions. However, as in other low temperature combustion (LTC) strategies, the combustion control using low exhaust gas recirculation (EGR) or a high compression ratio at high load conditions has been a challenge. The objective of this work was to examine the efficacy of using dual direct injectors for combustion phasing control of high load RCCI combustion. The present computational work demonstrates that 21 bar gross indicated mean effective pressure (IMEP) RCCI is achievable using dual direct injection. The simulations were done using the KIVA3V-Release 2 code with a discrete multicomponent fuel evaporation model, coupled with sparse analytical Jacobian solver for describing the chemistry of the two fuels (iso-octane and n-heptane). In order to identify an optimum injection strategy a nondominated sorting genetic algorithm II (NSGA II), which is a multiobjective genetic algorithm, was used. The goal of the optimization was to find injection timings and mass splits among the multiple injections that simultaneously minimize the six objectives: soot, nitrogen oxide (NOx), carbon monoxide (CO), unburned hydrocarbon (UHC), indicated specific fuel consumption (ISFC), and ringing intensity. The simulations were performed for a 2.44 liter, heavy-duty engine with a 15:1 compression ratio. The speed was 1800 rev/min and the intake valve closure (IVC) conditions were maintained at 3.42 bar, 90 °C, and 46% EGR. The resulting optimum condition has 12.6 bar/deg peak pressure rise rate, 158 bar maximum pressure, and 48.7% gross indicated thermal efficiency. The NOx, CO, and soot emissions are very low.

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References

Bessonette, P. W., Schleyer, C. H., Duffy, K. P., Hardy, W. L., and Liechty, M., 2007, “Effects of Fuel Property Changes on Heavy-Duty HCCI Combustion,” SAE Technical Paper No. 2007-01-0191. [CrossRef]
Kokjohn, S., Hanson, R., Splitter, D., and Reitz, R. D., 2011, “Fuel Reactivity Controlled Compression Ignition (RCCI): A Pathway to Controlled High-Efficiency Clean Combustion,” Int. J. Engine Res., 12(3), pp. 209–226. [CrossRef]
Splitter, D., Hanson, R., Kokjohn, S., and Reitz, R., 2011, “Reactivity Controlled Compression Ignition (RCCI) Heavy-Duty Engine Operation at Mid- and High-Loads With Conventional and Alternative Fuels,” SAE Technical Paper No. 2011-01-0363. [CrossRef]
Nieman, D. E., Dempsey, A. B., and Reitz, R. D., 2012, “Heavy-Duty RCCI Operation Using Natural Gas and Diesel,” SAE Int. J. Engines, 5, pp. 270–285. [CrossRef]
Splitter, D., Wissink, M., Kokjohn, S., and Reitz, R., 2012, “Effect of Compression Ratio and Piston Geometry on RCCI Load Limits and Efficiency,” SAE Technical Paper No. 2012-01-0383. [CrossRef]
Dempsey, A. B. and Reitz, R. D., 2011, “Computational Optimization of Reactivity Controlled Compression Ignition in a Heavy-Duty Engine With Ultra Low Compression Ratio,” SAE Int. J. Engines, 4, pp. 2222–2239. [CrossRef]
Eichmeier, J., Wagner, U., and Spicher, U., 2011, “Controlling Gasoline Low Temperature Combustion by Diesel Micro Pilot Injection,” ASME Paper No. ICEF2011-60042. [CrossRef]
Dec, J. E., Yang, Y., and Dronniou, N., 2012, “Improving Efficiency and Using E10 for Higher Loads in Boosted HCCI Engines,” SAE Int. J. Engines, 5, pp. 1009–1032. [CrossRef]
Manente, V., Johansson, B., and Tunestal, P., 2009, “Partially Premixed Combustion at High Load Using Gasoline and Ethanol, a Comparison With Diesel,” SAE International Technical Paper No. 2009-01-0944. [CrossRef]
Manente, V., Johansson, B., and Cannella, W., 2011, “Gasoline Partially Premixed Combustion, the Future of Internal Combustion Engines?,” Int. J. Engine Res., 12(3), pp. 194–208. [CrossRef]
Dempsey, A. B. and Reitz, R. D., 2011, “Computational Optimization of a Heavy-Duty Compression Ignition Engine Fueled With Conventional Gasoline,” SAE Int. J. Engines, 4, pp. 338–359. [CrossRef]
Ra, Y., Loeper, P., Andrie, M., Krieger, R., Foster, D., and Reitz, R., 2011, “Study of High Speed Gasoline Direct Injection Compression Ignition (GDICI) Engine Operation in the LTC Regime,” SAE Int. J. Engines, 4(1), pp. 1412–1430. [CrossRef]
Das Adhikary, B., Ra, Y., Reitz, R., and Ciatti, S., 2012, “Numerical Optimization of a Light-Duty Compression Ignition Engine Fuelled With Low-Octane Gasoline,” SAE International Technical Paper No. 2012-01-1336. [CrossRef]
Amsden, A. A., 1999, “KIVA-3V, Release 2, Improvement to KIVA-3V,” Los Alamos National Laboratory, Los Alamos, NM, Report No. LA-13608-MS.
Ra, Y. and Reitz, R. D., 2009, “A Vaporization Model for Discrete Multi-Component Fuel Sprays,” Int. J. Multiphase Flow, 35(2), pp. 101–117. [CrossRef]
Ra, Y. and Reitz, R. D., 2008, “A Reduced Chemical Kinetic Model for IC Engine Combustion Simulations With Primary Reference Fuels,” Combust. Flame, 155(4), pp. 713–738. [CrossRef]
Kokjohn, S., Hanson, R., Splitter, D., Kaddatz, J., and Reitz, R., 2011, “Fuel Reactivity Controlled Compression Ignition (RCCI) Combustion in Light- and Heavy-Duty Engines,” SAE Int. J. Engines, 4(1), pp. 360–374. [CrossRef]
Smith, G. P., Golden, D. M., Frenklach, M., Moriarty, N. W., Eiteneer, B., Goldenberg, M., Bowman, C. T., Hanson, R. K., Song, S., Gardiner, W. C., Jr., Lissianski, V. V., and Qin, Z., 2013, “GRI-Mech Home Page,” http://www.me.berkeley.edu/gri_mech/
Hiroyasu, H. and Kadota, T., 1976, “Models for Combustion and Formation of Nitric Oxide and Soot in Direct Injection Diesel Engines,” SAE Technical Paper No. 760129. [CrossRef]
Kong, S. C., Yong, S., and Reitz, R. D., 2007, “Modeling Diesel Spray Flame Liftoff, Sooting Tendency, and NOx Emissions Using Detailed Chemistry With Phenomenological Soot Model,” ASME J. Eng. Gas Turbines Power, 129(1), pp. 245–251. [CrossRef]
Perini, F., Galligani, E., and Reitz, R. D., 2012, “An Analytical Jacobian Approach to Sparse Reaction Kinetics for Computationally Efficient Combustion Modeling With Large Reaction Mechanisms,” Energy Fuels, 26(8), pp. 4804–4822. [CrossRef]
Abani, N., Kokjohn, S., Park, S. W., Bergin, M., Munnannur, A., Ning, W., Sun, Y., and Reitz, R. D., 2008, “An Improved Spray Model for Reducing Numerical Parameter Dependencies in Diesel Engine CFD Simulations,” SAE International Technical Paper No. 2008-01-0970. [CrossRef]
Beale, J. C. and Reitz, R. D., 1999, “Modeling Spray Atomization With the Kelvin-Helmholtz/Rayleigh-Taylor Hybrid Model,” Atomization Sprays, 9(6), pp. 623–650.
Han, Z. and Reitz, R. D., 1995, “Turbulence Modeling of Internal Combustion Engines Using RNG κ-ɛ Models,” Combust. Sci. Technol., 106(4–6), pp. 267–295. [CrossRef]
Hanson, R., Kokjohn, S., Splitter, D., and Reitz, R., 2011, “Fuel Effects on Reactivity Controlled Compression Ignition (RCCI) Combustion at Low Load,” SAE Int. J. Engines, 4, pp. 394–411. [CrossRef]
Wissink, M. L., Lim, J. H., Splitter, D. A., Hanson, R. M., and Reitz, R. D., 2012, “Investigation of Injection Strategies to Improve High Efficiency RCCI Combustion With Diesel and Gasoline Direct Injection,” ASME Internal Combustion Engine Division Fall Technical Conference, Vancouver, BC, Canada, September 23–26, ASME Paper No. ICEF2012-92107. [CrossRef]
Eng, J. A., 2002, “Characterization of Pressure Waves in HCCI Combustion,” SAE International Technical Paper No. 2002-01-2859. [CrossRef]
Shi, Y. and Reitz, R. D., 2009, “Assessment of Optimization Methodologies to Study the Effects of Bowl Geometry, Spray Targeting and Swirl Ratio for a Heavy-Duty Diesel Engine Operated at High-Load,” SAE Int. J. Engines, 1(1), pp. 537–557. [CrossRef]
Deb, K., Pratap, A., Agarwal, S., and Meyarivan, T., 2002, “A Fast and Elitist Multiobjective Genetic Algorithm: NSGA-II,” IEEE Trans. Evol. Comput., 6(2), pp. 182–197. [CrossRef]
Genzale, C. L., Reitz, R. D., and Wickman, D. D., 2007, “A Computational Investigation Into the Effects of Spray Targeting, Bowl Geometry and Swirl Ratio for Low-Temperature Combustion in a Heavy-Duty Diesel Engine,” SAE International Technical Paper No. 2007-01-0119. [CrossRef]
Genzale, C. L., 2008, “Optimizing Combustion Chamber Design for Low-Temperature Diesel Combustion,” Ph.D. dissertation, University of Wisconsin-Madison, Madison, WI.
Deb, K. and Jain, S., 2002, “Running Performance Metrics for Evolutionary Multi-Objective Optimization,” Indian Institute of Technology, Kanpur, India, KanGAL Report No. 2002004.

Figures

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Fig. 1

HCCI combustion of port-injected iso-octane with 46% EGR

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Fig. 2

Schematic representation of the injection strategy for the high load RCCI operation

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Fig. 3

Computational grid at TDC

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Fig. 4

Computational grid at TDC for the RCCI validation cases (red and green arrows indicate the injection direction of iso-octane and n-heptane, respectively)

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Fig. 5

The validation cases pressure traces and HRR

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Fig. 6

Validation case emissions

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Fig. 7

Optimum design injection strategy

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Fig. 8

Injection profiles of the optimum case

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Fig. 9

Pressure trace and heat release rate of the optimum case

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Fig. 10

In-cylinder equivalence ratio evolution

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Fig. 11

In-cylinder temperature evolution

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Fig. 12

Sources of emissions (soot, NOx, CO, and UHC)

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Fig. 13

Effect of the mass and SOI change (1st injection). The red crosses on the upper right corner indicate the overlap of the 1st and 2nd injections.

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Fig. 14

Effect of the 1st injection on the squish temperature

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Fig. 15

Inadequate combustion due to low squish temperature

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Fig. 16

Effect of the mass and SOI change (2nd injection) on the ringing intensity

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Fig. 17

Effect of the early 2nd injection

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Fig. 18

Smearing of the n-heptane vapor

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Fig. 19

Effect of the mass and SOI change (3rd injection) on the combustion control and emission

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Fig. 20

Varying n-heptane mass and SOI3 resulting in similar pressure traces

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