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 Shengli Wei,Chengcheng Wu,Shuzhe Yan,et al.Miller Cycle with Early Intake Valve Closing in Marine Medium-Speed Diesel Engines[J].Journal of Marine Science and Application,2022,(1):151-160.[doi:10.1007/s11804-022-00250-5]
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Miller Cycle with Early Intake Valve Closing in Marine Medium-Speed Diesel Engines


Miller Cycle with Early Intake Valve Closing in Marine Medium-Speed Diesel Engines
Shengli Wei Chengcheng Wu Shuzhe Yan Tongyuan Ding Jie Chen
Shengli Wei Chengcheng Wu Shuzhe Yan Tongyuan Ding Jie Chen
School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China
Medium-speed diesel engineMiller cycleCombustionNOx emissionEarly intake valve closing (EIVC)
In this study, a one-dimensional simulation was performed to evaluate the performance of in-cylinder combustion to control NO x emissions on a four-stroke, six-cylinder marine medium-speed diesel engine. Reducing the combustion temperature is an important in-cylinder measure to decrease NOx emissions of marine diesel engines. The Miller cycle is an effective method used to reduce the maximum combustion temperature in a cylinder and accordingly decrease NOx emissions. Therefore, the authors of this study designed seven different early intake valve closing (EIVC) Miller cycles for the original engine, and analyzed the cycle effects on combustions and emissions in high-load conditions. The results indicate that the temperature in the cylinder was significantly reduced, whereas fuel consumption was almost unchanged. When the IVC was properly advanced, the ignition delay period increased and the premixed combustion accelerated, but the in-cylinder average pressure, temperature and NOx emissions in the cylinder were lower than the original engine. However, closing the intake valve too early led to high fuel consumption. In addition, the NOx emissions, in-cylinder temperature, and heat release rate remarkably increased. Therefore, the optimal timing of the EIVC varied with different loads. The higher the load was, the earlier the best advance angle appeared. Therefore, the Miller cycle is an effective method for in-engine NOx purification and does not entail significant cost.


Benajes J, Molina S, Novella R, Belarte E (2014) Evaluation of massive exhaust gas recirculation and Miller cycle strategies for mixing-controlled low temperature combustion in a heavy duty diesel engine.Energy 71:355-366.http://doi.org/10.1016/j.fuel.2021.120940
Cui Y, Hu Z, Deng K, Wang Q (2014) Miller-cycle regulatable, twostage turbocharging system design for marine diesel engines.Journal of Engineering for Gas Turbines and Power 136(2):1-8.http://doi.org/10.1115/1.4025486
Dobos A, Kirkpatrick A (2017) Quasidimensional modeling of diesel combustion using detailed chemical kinetics.Journal of Engineering for Gas Turbines and Power 139(8):1-14.http://doi.org/10.1115/1.4035820
Dobrucali E (2016) The effects of the engine design and running parameters on the performance of a Otto-Miller Cycle engine.Energy 103:119-126.http://doi.org/10.1016/j.energy.2016.02.160
Feng L, Tian J, Long W, Gong W, Du B, Li D, Chen L (2016)Decreasing NOx of a low-speed two-stroke marine diesel engine by using in-cylinder emission control measures.Energies 9(4):1-16.http://doi.org/10.3390/en9040304
Georgiou C, Azimov U (2020) Analysis and multi-parametric optimisation of the performance and exhaust gas emissions of a heavy-duty diesel engine operating on miller cycle.Energies 13(14):3724.http://doi.org/10.3390/en13143724
Gonca G, Sahin B (2017) Effect of turbo charging and steam injection methods on the performance of a miller cycle diesel engine (MCDE).Applied Thermal Engineering 118:138-146.http://doi.org/10.1016/j.applthermaleng.2017.02.039
Gonca G, Sahin B, Parlak A, Ust Y, Ayhan V, Cesur I, Boru B (2015)Theoretical and experimental investigation of the Miller cycle diesel engine in terms of performance and emission parameters.Applied Energy 138:11-20.http://doi.org/10.1016/j.apenergy.2014.10.043
He Y, Liu J, Sun D, Zhu B (2019) Development of an aggressive miller cycle engine with extended late-intake-valve-closing and a two-stage turbocharger.Proceedings of the Institution of Mechanical Engineers, Part D:Journal of Automobile Engineering 233(2):413-426.http://doi.org/10.1177/0954407017745220
Imperato M, Kaario O, Sarjovaara P, Larmi M (2016) Split fuel injection and Miller cycle in a large-bore engine.Applied Energy 162:289-297.http://doi.org/10.1016/j.apenergy.2015.10.041
Kyrtatos P, Hoyer K, Obrecht P (2013) Recent developments in the understanding of the potential of in-cylinder NOx reduction though extreme miller valve timing.26th CIMAC Congress, Shanghai, No.225.
Kyrtatos P, Hoyer K, Obrecht P, Boulouchos K (2014) Apparent effects of in-cylinder pressure oscillations and cycle-to-cycle variability on heat release rate and soot concentration under long ignition delay conditions in diesel engines.International Journal of Engine Research 15(3):325-337.http://doi.org/10.1177/1468087413483288
Leng X, Wei S, Tian J, He S, Long W, Guo H, Zhang X, Zhong B, Li H (2014) The influence of charge temperature on the combustion and NOx emission of a medium speed diesel engine.Journal of Harbin Engineering University 35(11):1351-1357.(in Chinese)http://doi.org/10.3969/j.issn.1006-7043.201308049
Li C, Wang Y, Jia B, Roskilly A (2019) Application of Miller Cycle with turbocharger and ethanol to reduce NOx and particulates emissions from diesel engine-a numerical approach with model validations.Applied Thermal Engineering 159:904-911.http://doi.org/10.1016/j.applthermaleng.2019.01.056
Li T, Gao Y, Wang J, Chen Z (2014) The Miller cycle effects on improvement of fuel economy in a highly boosted, high compression ratio, direct-injection gasoline engine:EIVC vs.LIVC.Energy Conversion Management 79:59-65.http://doi.org/10.1016/j.enconman.2013.12.022
Liu H, Ma J, Tong L, Ma G, Zheng Z (2018) Investigation on the potential of high efficiency for internal combustion engines.Energies 11(3):513.http://doi.org/10.3390/en11030513
Liu H, Zhang H, Wang H, Zou X, Yao M (2016) A Numerical study on combustion and emission characteristics of marine engine through miller cycle coupled with EGR and water emulsified fuel.SAE Technical Paper 2016-01-2187.http://doi.org/10.4271/2016-01-2187
Lucchini T, Della Torre A, D’Errico G, Onorati A, Maes N, Somers L, Hardy G (2017) A comprehensive methodology for computational fluid dynamics combustion modeling of industrial diesel engines.International Journal of Engine Research 18(1-2):26-38.http://doi.org/10.1177/14680874166 79570
Luo Q, Sun B (2016) Effect of the Miller cycle on the performance of turbocharged hydrogen internal combustion engines.Energy Conversion Management 123:209-217.http://doi.org/10.1016/j.enconman.2016.06.039
Muzio L, Quartucy GC (1997) Implementing NOx control:Research to application.Progress in Energy and Combustion Science.23(3):233-266.http://doi.org/10.1016/S0360-1285(97)00002-6
Nahim HM, Younes R, Nohra C, Ouladsine M (2015) Complete modeling for systems of a marine diesel engine.Journal of Marine Science and Application 14(1):93-104.http://doi.org/10.1007/s11804-015-1285-y
Qi K, Feng L, Leng X, Du B, Long W (2011) Simulation of quasidimensional combustion model for predicting diesel engine performance.Applied Mathematical Modelling 35(2):930-940.http://doi.org/10.1016/j.apm.2010.07.047
Song E, Fan L, Chen C, Dong Q, Ma X, Bai Y (2013) Influence of pre-injection control parameters on main-injection fuel quantity for an electronically controlled double-valve fuel injection system of diesel engine.Journal of Marine Science and Application 12(3):366-373.http://doi.org/10.1007/s11804-013-1199-5
Tadros M, Ventura M, Guedes Soares C (2020) Optimization of the performance of marine diesel engines to minimize the formation of SOx emissions.Journal of Marine Science and Application 19(3):473-484.http://doi.org/10.1007/s11804-020-00156-0
Wang P, Tang X, Shi L, Ni X, Hu Z, Deng K (2021) Experimental investigation of the influences of Miller cycle combined with EGR on performance, energy and exergy characteristics of a fourstroke marine regulated two-stage turbocharged diesel engine.Fuel 300, 120940.http://doi.org/10.1016/j.fuel.2021.120940
Yang Z, Xie H, Chen T, Wu Z, Zhao H (2019) Effects of PFI/DI injection on combustion characteristics of miller-cycle gasoline engine.Journal of Central South University 25(1):52-59.(in Chinese) http://doi.org/10.11715/j.rskxjs.R201804027
Zamboni G, Moggia S, Capobianco M (2016) Hybrid EGR and turbocharging systems control for low NOx and fuel consumption in an automotive diesel engine.Applied Energy 165:839-848.http://doi.org/10.1016/j.apenergy.2015.12.117
Zeldovich Y, Barenblatt G, Sunyaew R (2014) Selected Works of Yakov Borisovich Zeldovich, Volume I.Princeton University Press, Princeton, New Jersey, 404-410.
Zerom M, Gonca G (2020) Multi-criteria performance analysis of dual miller cycle-Organic rankine cycle combined power plant.Energy Conversion Management 221, 113121.http://doi.org/10.1016/j.enconman.2020.113121
Zhao J (2017) Research and application of over-expansion cycle(Atkinson and Miller) engines-A review.Applied Energy 185:300-319.http://doi.org/10.1016/j.apenergy.2016.10.063
Zhu S, Liu S, Qu S, Deng K (2017) Thermodynamic and experimental researches on matching strategies of the pre-turbine steam injection and the Miller cycle applied on a turbocharged diesel engine.Energy 140:488-505.http://doi.org/10.1016/j.energy.2017.08.094


Received date: 2021-07-08;Accepted date: 2021-10-24。
Foundation item:Supported by the Industry-UniversityResearch Collaboration Project of Jiangsu Province (Grant No. BY2019048); the 19th batch of student scientific research projects of Jiangsu University (19A306).
Corresponding author:Shengli Wei,E-mail:victory_wei@hotmail.com
Last Update: 2022-04-22