Effects of fuel combination and IVO timing on combustion and emissions of a dual-fuel HCCI combustion engine
Received date: 06 Jan 2020
Accepted date: 29 Feb 2020
Published date: 15 Dec 2020
Copyright
This paper experimentally and numerically studied the effects of fuel combination and intake valve opening (IVO) timing on combustion and emissions of an n-heptane and gasoline dual-fuel homogeneous charge compression ignition (HCCI) engine. By changing the gasoline fraction (GF) from 0.1 to 0.5 and the IVO timing from –15°CA ATDC to 35°CA ATDC, the in-cylinder pressure traces, heat release behaviors, and HC and CO emissions were investigated. The results showed that both the increased GF and the retarded IVO timing delay the combustion phasing, lengthen the combustion duration, and decrease the peak heat release rate and the maximum average combustion temperature, whereas the IVO timing has a more obvious influence on combustion than GF. HC and CO emissions are decreased with reduced GF, advanced IVO timing and increased operational load.
Xin LIANG , Jianyong ZHANG , Zhongzhao LI , Jiabo ZHANG , Zhen HUANG , Dong HAN . Effects of fuel combination and IVO timing on combustion and emissions of a dual-fuel HCCI combustion engine[J]. Frontiers in Energy, 2020 , 14(4) : 778 -789 . DOI: 10.1007/s11708-020-0698-8
1 |
Lu X, Han D, Huang Z. Fuel design and management for the control of advanced compression-ignition combustion modes. Progress in Energy and Combustion Science, 2011, 37(6): 741–783
|
2 |
Karthikeya Sharma T, Amba Prasad Rao G, Madhu Murthy K. Control of peak pressures of an HCCI engine under varying swirl and operating parameters. Frontiers in Energy, 2016, 10(3): 337–346
|
3 |
Wissink M, Reitz R. The role of the diffusion-limited injection in direct dual fuel stratification. International Journal of Engine Research, 2017, 18(4): 351–365
|
4 |
Liu Y, Li L, Lu H, Schmitt S, Deng J, Rao L. SI/HCCI mode switching optimization in a gasoline direct injection engine employing dual univalve system. Journal of Engineering for Gas Turbines and Power, 2019, 141(3): 031001
|
5 |
Wang Z S, Du G Z, Li Z J, Wang X, Wang D. Study on the combustion characteristics of a high compression ratio HCCI engine fueled with natural gas. Fuel, 2019, 255: 115701
|
6 |
Vallinayagam R, An Y, Vedharaj S J, Sim J, Chang B, Johansson. Naphtha vs. dieseline–the effect of fuel properties on combustion homogeneity in transition from CI combustion towards HCCI. Fuel, 2018, 224: 451–460
|
7 |
Coskun G, Delil Y, Demir U. Analysis of an HCCI engine combustion using toluene reference fuel for different equivalence ratios-Comparison of experimental results with CFD and SRM simulations. Fuel, 2019, 247: 217–227
|
8 |
Qian Y, Li H, Han D, Ji L, Huang Z, Lu X. Octane rating effects of direct injection fuels on dual fuel HCCI-DI stratified combustion mode with port injection of n-heptane. Energy, 2016, 111: 1003–1016
|
9 |
Liu W, Zhang J B, Huang Z, Han D. Applicability of high dimensional model representation correlations for ignition delay times of n-heptane/air mixtures. Frontiers in Energy, 2019, 13(2): 367–376
|
10 |
Kassa M, Hall C, Ickes A, Wallner T. Modeling and control of fuel distribution in a dual-fuel internal combustion engine leveraging late intake valve closings. International Journal of Engine Research, 2017, 18(8): 797–809
|
11 |
Liu H, Tang Q, Yang Z, Ran X, Geng C, Chen B, Feng L, Yao M. A comparative study on partially premixed combustion (PPC) and reactivity controlled compression ignition (RCCI) in an optical engine. Proceedings of the Combustion Institute, 2019, 37(4): 4759–4766
|
12 |
Yu S, Li L G, Zheng M. n-Butanol reactivity modulation with early fuel injections for low NOx compression ignition combustion. Fuel, 2019, 242: 243–254
|
13 |
Tang Q, Liu H, Ran X, Li M, Yao M. Effects of direct-injection fuel types and proportion on late-injection reactivity controlled compression ignition. Combustion and Flame, 2020, 211: 445–455
|
14 |
Liu H, Ma G, Ma N, Zheng Z, Huang H, Yao M. Effects of charge concentration and reactivity stratification on combustion and emission characteristics of a PFI-DI dual injection engine under low load condition. Fuel, 2018, 231: 26–36
|
15 |
Lu X, Qian Y, Yang Z, Han D, Ji J, Zhou X, Huang Z. Experimental study on compound HCCI (homogenous charge compression ignition) combustion fueled with gasoline and diesel blends. Energy, 2014, 64: 707–718
|
16 |
Huang Z, Ji L, Han D, Yang Z, Lu X. Experimental study on dual-fuel compound homogeneous charge compression ignition combustion. International Journal of Engine Research, 2013, 14(1): 23–33
|
17 |
Ma S, Zheng Z, Liu H, Zhang Q, Yao M. Experimental investigation of the effects of diesel injection strategy on gasoline/diesel dual-fuel combustion. Applied Energy, 2013, 109: 202–212
|
18 |
Kuzuoka K, Kondo T, Kudo H, Taniguchi H, Chishima H, Hashimoto K. Controlling combustion with negative valve overlap in a gasoline–diesel dual-fuel compression ignition engine. International Journal of Engine Research, 2016, 17(3): 354–365
|
19 |
He B, Liu M, Yuan J, Zhao H. Combustion and emission characteristics of a HCCI engine fuelled with n-butanol–gasoline blends. Fuel, 2013, 108: 668–674
|
20 |
Hasan M M, Rahman M M, Nomani Kabir M, Abdullah A A. Numerical study on the combustion and performance characteristics of a HCCI engine resulting from the autoignition of gasoline surrogate fuel. Journal of Energy Engineering, 2017, 143(5): 04017049
|
21 |
Cinar C, Uyumaz A, Solmaz H, Sahin F, Polat S, Yilmaz E. Effects of intake air temperature on combustion, performance and emission characteristics of a HCCI engine fueled with the blends of 20% n-heptane and 80% isooctane fuels. Fuel Processing Technology, 2015, 130: 275–281
|
22 |
Yeom K, Jang J Y, Bae C S. Homogeneous charge compression ignition of LPG and gasoline using variable valve timing in an engine. Fuel, 2007, 86(4): 494–503
|
23 |
Vos K R, Shaver G M, Lu X, Allen C M, McCarthy J Jr, Farrell L. Improving diesel engine efficiency at high speeds and loads through improved breathing via delayed intake valve closure timing. International Journal of Engine Research, 2019, 20(2): 194–202
|
24 |
Huang Z, Li Z, Zhang J, Lu X, Fang J, Han D. Active fuel design—a way to manage the right fuel for HCCI engines. Frontiers in Energy, 2016, 10(1): 14–28
|
25 |
Richards K J, Senecal P K, Pomraning E. CONVERGE (v2.3). Convergent Science Inc, Madison, WI, USA, 2016.
|
26 |
Han Z, Reitz R D. Turbulence modeling of internal combustion engines using RNG k-ε models. Combustion Science and Technology, 1995, 106(4–6): 267–295
|
27 |
Senecal P K, Pomraning E, Richards K J, Briggs T E, Choi C Y, McDavid R M, Patterson M A. Multi-dimensional modeling of direct-injection diesel spray liquid length and flame lift-off length using CFD and parallel detailed chemistry. SAE Technical Paper, 2003, 2003–01–1043
|
28 |
Liu Y, Jia M, Xie M, Pang B. Enhancement on a skeletal kinetic model for primary reference fuel oxidation by using a semidecoupling methodology. Energy & Fuels, 2012, 26(12): 7069–7083
|
29 |
Han Z, Reitz R D. A temperature wall function formulation for variable density turbulence flow with application to engine convective heat transfer modeling. International Journal of Heat and Mass Transfer, 1997, 40(3): 613–625
|
30 |
Guang H, Yang Z, Huang Z, Lu X C. Experimental study of n-heptane ignition delay with carbon dioxide addition in a rapid compression machine under low-temperature conditions. Chinese Science Bulletin, 2012, 57(30): 3953–3960
|
31 |
Maurya R K, Agarwal A K. Experimental study of combustion and emission characteristics of ethanol fuelled port injected homogeneous charge compression ignition (HCCI) combustion engine. Applied Energy, 2011, 88(4): 1169–1180
|
32 |
Yousefi A, Gharehghani A, Birouk M. Comparison study on combustion characteristics and emissions of a homogeneous charge compression ignition (HCCI) engine with and without pre-combustion chamber. Energy Conversion and Management, 2015, 100: 232–241
|
33 |
Papagiannakis R G. Study of air inlet preheating and EGR impacts for improving the operation of compression ignition engine running under dual fuel mode. Energy Conversion and Management, 2013, 68: 40–53
|
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