Numerical investigation of performance and combustion of 16RK215 engine with hydrogen and diesel fuel mixture using reactive control compression ignition method.
الموضوعات :
Misagh Khadem fini
1
()
Hossein Ghomashi
2
(Professor at South Tehran Azad University)
الکلمات المفتاحية: Engine combustion, dual fuel, rail and marine applications,
ملخص المقالة :
With the aim of improving the performance and emissions of the 16RK215 heavy diesel engine, the numerical simulation of hydrogen-diesel combustion was carried out on this engine with the new compression ignition method of reactive control. In the first phase, combustion simulation is done with 100% diesel fuel, and after verification, in the second phase, dual fuel combustion simulation is done. With the aim of maximum use of hydrogen gas, two-fuel combustion simulation of reactive control compression ignition (RCCI) is carried out by using 70% of hydrogen gas with an equivalence ratio of 0.35 and diesel fuel with 30% of the total share of input fuel. Then, in each step, the amount of hydrogen decreases by 10% and the amount of diesel fuel increases by 10%. By increasing the amount of hydrogen, the results show that the maximum combustion pressure decreases and leads to an increase of about 5% of power. NOx, CO, SOOT are reduced due to poor or so-called lean mixture of fuel and incoming air. In the third phase, by keeping the amount of diesel fuel constant, the effect of the variable amount of hydrogen is checked, which increases the maximum combustion pressure and the temperature inside the chamber in the condition of constant injection of 40% diesel. In the condition of 80% hydrogen compared to 20% hydrogen, the amount of NOx pollutants increased by 90%, CO decreased by 61% and UHC decreased by 49%.
[1] H.Ghomashi , V.Issa jan , Numerical simulation of performance and combustion of 16RK215 engine with reactivity controlled compression ignition method . (The 12th International conference for Internal combustion engines and oil, Tehran)
[2] Onishi, S., Jo, S. H., Shoda, K., Jo, P. D., & Kato, S. (1979). Active thermo-atmosphere combustion (ATAC)—a new combustion process for internal combustion engines. SAE Transactions, 1851-1860.
[3] Najt, P. M., & Foster, D. E. (1983). Compression-ignited homogeneous charge combustion. SAE Transactions, 964-979.
[4] Thring, R. H. (1989). Homogeneous-charge compression-ignition (HCCI) engines (No. 892068). SAE Technical paper.
[5] Ghomashi, H., Olley, P., Mason, B., & Ebrahimi, M. K. (2015). Simulating the influence of injection timing, premixed ratio, and inlet temperature on natural gas/diesel dual–fuel HCCI combustion in a diesel engine. International Journal of Powertrains, 4(1), 36-52.
[6] Murari Mohon roy, Eiji Tomoto,Nobuyuki kawahara,yuji harada,atsushi sakane , an experimental investigation on engine performance and emissions of a supercharged H2-diesel dual fuel engine
[7] Liu, Jie, et al., Numerical study of hydrogen addition to DME/CH4 dual fuel RCCI engine. International journal of hydrogen energy 37.10 (2012):8688-8697.
[8] H.An,W.M.Yang,A.Maghbouli,J.Li,S.K.Chou,K.J.Chua,J.X.Wang,L.Li, ” Numerical investigation on the combustion and emission characteristics of a hydrogen assisted biodiesel combustion in a diesel engine https://doi.org/10.1016/j.fuel.2013.12.021
Yari "Effect of synthesis gas composition produced by biomass gasification method on the performance and pollutants of an RCCI diesel-synthesis gas engine." Fuel and combustion 12.4 95-77 [9]
[10] http://en.wikipedia.org/wiki/rk_215
[11] https://www.siemens-energy.com/global/en/offerings/power-generation/gas-engines.html
[12] https://www.engines.man.eu/global/en/index.html
[13] https://www.researchgate.net/figure/Specification-of-16RK215-engine_tbl1_41706247
[14] https://www.avl.com/
[15] Keshavarz, M., Javadirad, G., & Jazayeri, S. A. (2011). Injection Optimization for Heavy Duty Diesel Engine in Order to Find High Efficiency and Low NOx Engine Concept by Means of Quasi Dimensional Multi-Zone Spray Modeling. The Journal of Engine Research, 22(22), 29-38.
[16] Chamehsara, S., Mirsalim, S. M., & Tajdari, M. (2014). Effects of fuel injection discharge curve and injection pressure on upgrading power and combustion parameters in heavy-duty (HD) diesel engine with computational fluid dynamics (CFD) simulation.
