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Investigation of Flame Propagation and Pollutants Formation Within a Combustion Chamber of an RCCI Engine

Abstract

The environmental problems caused by global warming have led to strict regulations to limit greenhouse gas production. These laws have accelerated the changes in the automotive and transportation industries. Reactivity controlled compression ignition (RCCI) combustion has always been considered one of the concepts that can increase the efficiency of internal combustion engines by more than 50%. In this research, by using three-dimensional simulations, we investigate the basis and theory of RCCI combustion. Investigations have shown that flame propagation in RCCI combustion is different from conventional combustions, so that the onset of a flame kernel and the start of energy release are similar to diesel combustion, but the flame propagation is quite different. In the RCCI engine, the whole combustion chamber is ignited so fast by forming several new flame kernels. The maximum combustion chamber temperature is reduced by about 12% in RCCI combustion. In the following, the formations of NOx and soot are investigated, and the process of pollutant formation reactions is accurately analyzed. The RCCI combustion could achieve a near-zero NOx and near-zero soot emission.

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Notes

  1. Renormalized Group.

  2. Reynolds Averaged Navier–Stokes.

  3. Rate of Heat Release.

Abbreviations

AMR:

Adaptive mesh refinement

APFI:

Advance port fuel injection

ATDC:

After top dead center

BDC:

Bottom dead center

BTDC:

Before top dead center

CA:

Crank angle

CFD:

Computational fluid dynamics

c μ :

Turbulent model constant

c p :

Specific heat

D:

Diffusion coefficient

e :

Specific internal energy

GDI:

Gasoline direct injections

h m :

Species enthalpy

k :

Turbulent kinetic energy

K t :

Turbulent conductivity

P :

Pressure

PFI:

Port fuel injection

Pr t :

Prandtl number

RCCI:

Reactivity controlled compression ignition

S :

Source term in mass transport equation

T :

Temperature

TDC:

Top dead center

u :

Velocity

Y m :

Mass fraction of species m

δ ij :

Kronecker delta

ε :

Turbulent dissipation

μ :

Viscosity

μ t :

Turbulent viscosity

ρ :

Density

σ ij :

Stress tensor

References

  • Agarwal AK, Singh AP, Kumar V (2021) Particulate characteristics of low-temperature combustion (PCCI and RCCI) strategies in single cylinder research engine for developing sustainable and cleaner transportation solution. Environ Pollut;284:117375. https://www.sciencedirect.com/science/article/pii/S026974912100957X

  • Benajes J, Pastor JV, García A, Boronat V (2016) A RCCI operational limits assessment in a medium duty compression ignition engine using an adapted compression ratio. Energy Convers Manag;126:497–508. https://www.sciencedirect.com/science/article/pii/S0196890416306975

  • Benajes J, Pastor JV, García A, Monsalve-Serrano J (2015) The potential of RCCI concept to meet EURO VI NOx limitation and ultra-low soot emissions in a heavy-duty engine over the whole engine map. Fuel. 159:952–61. https://www.sciencedirect.com/science/article/pii/S0016236115007553

  • Bessonette PW, Schleyer CH, Duffy KP, Hardy WL, Liechty MP (2007) Effects of fuel property changes on heavy-duty HCCI combustion. SAE Trans. JSTOR;242–54.

  • Çelebi S, Haşimoğlu C, Uyumaz A, Halis S, Calam A, Solmaz H, et al (2021) Operating range, combustion, performance and emissions of an HCCI engine fueled with naphtha. Fuel. ;283:118828. https://www.sciencedirect.com/science/article/pii/S001623612031824X

  • Converge CFD Software. Converge Manual-Converge CFD 2.3. 2016.

  • Dalha IB, Said MA, Abdul Karim ZA, El-Adawy M (2021) Effects of port mixing and high carbon dioxide contents on power generation and emission characteristics of biogas-diesel RCCI combustion. Appl Therm Eng. 198:117449. https://www.sciencedirect.com/science/article/pii/S1359431121008838

  • Diwakar R, Singh S (2008) NOx and soot reduction in diesel engine premixed charge compression ignition combustion: a computational investigation. Int J Engine Res 9(3):195–214. https://doi.org/10.1243/14680874JER00308

    Article  Google Scholar 

  • Duan X, Lai M-C, Jansons M, Guo G, Liu J (2021) A review of controlling strategies of the ignition timing and combustion phase in homogeneous charge compression ignition (HCCI) engine. Fuel;285:119142. https://www.sciencedirect.com/science/article/pii/S0016236120321384

  • Gan S, Ng HK, Pang KM (2011) Homogeneous charge compression ignition (HCCI) combustion: implementation and effects on pollutants in direct injection diesel engines. Appl Energy;88(3):559–67. https://www.sciencedirect.com/science/article/pii/S0306261910003697

  • Han Z, Reitz RD (1997) A temperature wall function formulation for variable-density turbulent flows with application to engine convective heat transfer modeling. Int J Heat Mass Transf. ;40(3):613–25. https://www.sciencedirect.com/science/article/pii/0017931096001172

  • Hanson RM, Kokjohn SL, Splitter DA, Reitz RD (2010) An experimental investigation of fuel reactivity controlled pcci combustion in a heavy-duty engine. SAE Int J Engines 3(1):700–716

    Article  Google Scholar 

  • Inagaki K, Fuyuto T, Nishikawa K, Nakakita K (2006) Dual-fuel PCI combustion controlled by in-cylinder stratification of ignitability. SAE Tech. Pap. 2006; (2006–01–0028).

  • Richards KJ, Senecal PK, Pomraning E (2008) CONVERGE (Version 1.3). Convergent Science Inc, Middleton

    Google Scholar 

  • Okude K, Mori K, Shiino S, Moriya T (2004) Premixed compression ignition (PCI) combustion for simultaneous reduction of NOx and soot in diesel engine. SAE Tech. Pap. 2004–01–1907. 2004;14

  • Kokjohn SL (2012) Reactivity controlled compression ignition (RCCI) combustion. The University of Wisconsin, Madison

    Google Scholar 

  • Kokjohn SL, Hanson RM, Splitter DA, Reitz RD (2011) Fuel reactivity controlled compression ignition (RCCI): a pathway to controlled high-efficiency clean combustion. Int J Engine Res 12(3):209–226. https://doi.org/10.1177/1468087411401548

    Article  Google Scholar 

  • Li Y, Jia M, Chang Y, Liu Y, Xie M, Wang T, et al. (2014) Parametric study and optimization of a RCCI (reactivity controlled compression ignition) engine fueled with methanol and diesel. Energy;65:319–32. https://www.sciencedirect.com/science/article/pii/S0360544213010293

  • Liu AB, Mather D, Reitz RD (1993) Modeling the effects of drop drag and breakup on fuel sprays. SAE International, Warrendale. https://doi.org/10.4271/930072

    Article  Google Scholar 

  • Mohammadian A, Chehrmonavari H, Kakaee A, Paykani A (2020) Effect of injection strategies on a single-fuel RCCI combustion fueled with isobutanol/isobutanol + DTBP blends. Fuel;278:118219. https://www.sciencedirect.com/science/article/pii/S0016236120312151

  • Molina S, García A, Monsalve-Serrano J, Estepa D (2018) Miller cycle for improved efficiency, load range and emissions in a heavy-duty engine running under reactivity controlled compression ignition combustion. Appl Therm Eng Elsevier 136:161–168

    Article  Google Scholar 

  • Molina S, García A, Monsalve-Serrano J, Villalta D (2019) Effects of fuel injection parameters on premixed charge compression ignition combustion and emission characteristics in a medium-duty compression ignition diesel engine. Int J Engine Res. 22(2):443–55. https://doi.org/10.1177/1468087419867014

  • Musculus MPB (2006) Multiple simultaneous optical diagnostic imaging of early-injection low-temperature combustion in a heavy-duty diesel engine. SAE International, Warrendale

    Google Scholar 

  • Nagle J, Strickland-Constable RF (1962) Oxidation of carbon between 1000–2000 °C. Proc Fifth Carbon Conf 1:154

    Article  Google Scholar 

  • Nazemi M, Shahbakhti M (2016) Modeling and analysis of fuel injection parameters for combustion and performance of an RCCI engine. Appl Energy;165:135–50. https://www.sciencedirect.com/science/article/pii/S0306261915015433

  • Pan S, Cai K, Cai M, Du C, Li X, Han W, et al (2021) Experimental study on the cyclic variations of ethanol/diesel reactivity controlled compression ignition (RCCI) combustion in a heavy-duty diesel engine. Energy;237:121614. https://www.sciencedirect.com/science/article/pii/S0360544221018624

  • Parks JE, Prikhodko V, Storey JME, Barone TL, Lewis SA, Kass MD, et al. (2015) Emissions from premixed charge compression ignition (PCCI) combustion and affect on emission control devices. Catal Today;151(3):278–84. https://www.sciencedirect.com/science/article/pii/S0920586110001471

  • Payri F, Luján JM, Martín J, Abbad A (2010) Digital signal processing of in-cylinder pressure for combustion diagnosis of internal combustion engines. Mech Syst Signal Process;24(6):1767–84. https://www.sciencedirect.com/science/article/pii/S0888327010000518

  • Polat S, Yücesu HS, Uyumaz A, Kannan K, Shahbakhti M (2020) An experimental investigation on combustion and performance characteristics of supercharged HCCI operation in low compression ratio engine setting. Appl Therm Eng. ;180:115858. https://www.sciencedirect.com/science/article/pii/S1359431120333408

  • Raghu P, Thilagan K, Thirumoorthy M, Lokachari S, Nallusamy N (2013) Spray characteristics of diesel and biodiesel in direct injection diesel engine. Adv Mater Res. Trans Tech Publications Ltd; 768:173–9. https://www.scientific.net/AMR.768.173

  • Ramana PV, Maheswar D, UmameheswerGowd B (2015) Review on research and development of HCCI technology. Int J IT Eng Appl Sci Res 4(5):5–16

    Google Scholar 

  • Reitz R (1987) Modeling atomization processes in high-pressure vaporizing sprays. At Spray Technol 3(4):309–337

    Google Scholar 

  • Reitz RD, Duraisamy G. Review of high efficiency and clean reactivity controlled compression ignition (RCCI) combustion in internal combustion engines. Prog Energy Combust Sci. 2015;46:12–71. https://www.sciencedirect.com/science/article/pii/S0360128514000288

  • Rostampour A, Toosi AN (2015) Numerical investigation of the effect of knock on heat transfer in a turbocharged spark ignition engine. J Eng Gas Turbines Power. DOI 10(1115/1):4030517

    Google Scholar 

  • Said MA, Dalha IB, Abdul Karim ZA, El-Adawy M (2022) Influence of biogas mixing parameters on the combustion and emission characteristics of diesel RCCI engine. Alexandria Eng J;61(2):1479–97. https://www.sciencedirect.com/science/article/pii/S1110016821004154

  • Schmidt DP, Rutland CJ (2000) A new droplet collision algorithm. J Comput Phys;164(1):62–80. https://www.sciencedirect.com/science/article/pii/S0021999100965689

  • Senecal PK, Pomraning E, Richards KJ, Briggs TE, Choi CY, McDavid RM, et al 2003 Multi-dimensional modeling of direct-injection diesel spray liquid length and flame lift-off length using CFD and parallel detailed chemistry. SAE Trans; 1331–51.

  • Singh G, Singh AP, Agarwal AK. Experimental investigations of combustion, performance and emission characterization of biodiesel fuelled HCCI engine using external mixture formation technique. Sustain Energy Technol Assessments;6:116–28. https://www.sciencedirect.com/science/article/pii/S2213138814000034

  • Srihari S, Thirumalini S. Investigation on reduction of emission in PCCI-DI engine with biofuel blends. Renew Energy. 2017;114:1232–7. https://www.sciencedirect.com/science/article/pii/S0960148117307607

  • Su TF, Patterson MA, Reitz RD, Farrell PV (1996) Experimental and numerical studies of high pressure multiple injection sprays. SAE Int. https://doi.org/10.4271/960861

    Article  Google Scholar 

  • Wang Y, Yao M, Li T, Zhang W, Zheng Z (2016) A parametric study for enabling reactivity controlled compression ignition (RCCI) operation in diesel engines at various engine loads. Appl Energy;175:389–402. https://www.sciencedirect.com/science/article/pii/S0306261916305578

  • Wategave SP, Banapurmath NR, Sawant MS, Soudagar MEM, Mujtaba MA, Afzal A, et al (2021) Clean combustion and emissions strategy using reactivity controlled compression ignition (RCCI) mode engine powered with CNG-Karanja biodiesel. J Taiwan Inst Chem Eng;124:116–31. https://www.sciencedirect.com/science/article/pii/S1876107021002315

  • Xue Q, Som S, Senecal P, Pomraning E (2013) A study of grid resolution and SGS models for LES under non-reacting spray conditions

  • Yao M, Zheng Z, Liu H (2009) Progress and recent trends in homogeneous charge compression ignition (HCCI) engines. Prog Energy Combust Sci; 35(5):398–437. https://www.sciencedirect.com/science/article/pii/S0360128509000197

  • Yousefi A, Birouk M, Guo H (2017) An experimental and numerical study of the effect of diesel injection timing on natural gas/diesel dual-fuel combustion at low load. Fuel;203:642–57. https://www.sciencedirect.com/science/article/pii/S001623611730580X

  • Zhang C, Zhou A, Shen Y, Li Y, Shi Q (2017) Effects of combustion duration characteristic on the brake thermal efficiency and NOx emission of a turbocharged diesel engine fueled with diesel-LNG dual-fuel. Appl Therm Eng 2017;127:312–8. https://www.sciencedirect.com/science/article/pii/S1359431117315089

  • Zhang J, Ren J (2011) Numerical simulation on effects of nozzle hole cone angle on combustion and emissions in a diesel engine. In: 2011 Int. conf. electr. inf. control eng, p 5138–42

  • Zhao H (2007) HCCI and CAI engines for the automotive industry, 1st edn. Woodhead Publishing, Sawston

    Book  Google Scholar 

  • Zhao W, Zhang Y, Huang G, He Z, Qian Y, Lu X (2021) Experimental investigation on combustion and emission characteristics of butanol/biodiesel under blend fuel mode, dual fuel RCCI and ICCI modes. Fuel. 2021;305:121590. https://www.sciencedirect.com/science/article/pii/S001623612101471X

  • Žvar Baškovič U, Vihar R, Rodman Oprešnik S, Seljak T, Katrašnik T (2021) RCCI combustion with renewable fuel mix—tailoring operating parameters to minimize exhaust emissions. Fuel;122590. https://www.sciencedirect.com/science/article/pii/S0016236121024583

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Correspondence to Mohammad Hassan Shojaeefard.

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Rostampour, A., Shojaeefard, M.H. & Molaeimanesh, G.R. Investigation of Flame Propagation and Pollutants Formation Within a Combustion Chamber of an RCCI Engine. Iran J Sci Technol Trans Mech Eng (2022). https://doi.org/10.1007/s40997-022-00504-1

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  • DOI: https://doi.org/10.1007/s40997-022-00504-1

Keywords

  • Flame propagation
  • RCCI
  • NOx
  • Soot
  • Low-temperature combustion