Dizel Motorlarda Performans ve Egzoz Emisyonlarının n-hexadecane Katkı Maddesi ile İyileştirilmesi

Year 2018, , 701 - 706, 01.09.2018

Mehmet Çelik

https://doi.org/10.2339/politeknik.382994

Abstract

Yakıtların fiziksel ve kimyasal özellikleri; motor
performansı ve emisyonları önemli ölçüde etkilemektedir. Yakıt kalitesini
arttırmak, daha iyi yanma ve emisyonları azaltmak için yakıt içerisine çeşitli
katkı maddeleri ilave edilmektedir. Bu katkı maddeleri hidrokarbonların daha
iyi yanması için katalitik bir etki oluşturur. Bu çalışmada, dizel yakıtına
ilave edilen n-hexadecane katkı maddesi değişen yakıt özelliklerinin motor
performansı ve egzoz emisyonları üzerine etkisi incelenmiştir. Deneyler sonucunda
n-hexadecane ilave edilen yakıtların
viskozitesi azalırken setan sayısı artmaktadır. Yakıt özelliklerinde ki bu
iyileşme, yakıtın silindir içerisine püskürtüldüğünde daha iyi atomize olmasına
ve yanma kalitesinin artmasına neden olmaktadır. Deneyler sonucun da en iyi
iyileşme %16 n-hexadecane (DHD16) oranında elde edilmiştir. 2800 1/min’de dizel
yakıtına göre (D0) güç %1.06 artarken, özgül yakıt tüketimi %2.38 azalmaktadır.
Karbon monoksit (CO) emisyonu %10.24, hidrokarbon (HC) emisyonu %19.31, is
emisyonu %19.96 azalmaktadır. Yanma kalitesinin iyileşmesi ısı yayılımının
yükselmesine sebep olurken azot oksit (NO_x) emisyonu %6.66
arttırmıştır.  Setan sayısındaki artışa
bağlı olarak maksimum silindir basıncı artmış tutuşma gecikmesi azalmıştır.

Keywords

n-hexadecane, yakıt katkıları, egzoz emisyonları, dizel motorlar, motor performansı

Improvement of Performance and Exhaust Emissions in Diesel Engines by Addition of n-hexadecane Material

Abstract

Physical and
chemical properties of fuels significantly affect engine performance and
emissions. Various additives are added to the fuel to improve fuel quality,
better combustion and reduce emissions. These additives create a catalytic
effect for better combustion of hydrocarbons. In this study, the effect of
varying fuel properties on engine performance and exhaust emissions of
n-hexadecane additive added to diesel fuel was investigated. As a result of the
experiments, while the viscosity of n-hexadecane added fuels decreased, the
cetane number increased. This improvement in fuel properties leads to better
atomization and increased combustion quality when fuel is injected into the
fuel cylinder. As a result, the best improvement was obtained at 16%
n-hexadecane (DHD16) ratio. At 2800 1/min, the power increases by 1.06%
compared to diesel fuel (D0) while the brake specific fuel consumption
decreases by 2.38%. Carbon monoxide (CO) emission decreases by 10.24%,
hydrocarbon (HC) emission decreases by 19.31% and smoke emission decreases by
19.96%. Improvement of combustion quality caused increase of heat emission
while nitrogen oxide (NOx) increased the emission by 6.66%. Due to the increase
in cetane number, the maximum cylinder pressure increased and the ignition
delay decreased.

Keywords

n-hexadecane, fuel additives, exhaust emissions, diesel engines, engine performance

References

• [1] Kaimal V.K. and Vijayabalan P., “A detailed study of combustion characteristics of a DI diesel engine using waste plastic oil and its blends”, Energy Conversion and Management, 105: 951-956, (2015).
• [2] Du J., Sun W., Guo L., Xiao S., Tan M., Li G. and Fan L., “Experimental study on fuel economies and emissions of direct-injection premixed combustion engine fueled with gasoline/diesel blends”, Energy Conversion and Management, 100: 300-309, (2015).
• [3] Çelik M., Solmaz H. and Yücesu H.S., “Examination of the effects of organic based manganese fuel additive on combustion and engine performance”, Fuel Process. Technol. 139: 100-107, (2015).
• [4] Shahabuddin M., Liaquat A.M., Masjuki H.H., Kalam M.A. and Mofiruj M., “Ignition delay, combustion and emission characteristics of diesel engine fueled with biodiesel, Renew. Sustain. Energy Rev. 21: 623-632, (2013).
• [5] Mangus M., Kiani F., Mattson J., Tabakh D., Petka J., Depcik C., Peltier E. and Stagg-Williams S., “Investigating the compression ignition combustion of multiple biodiesel/ULSD (ultra-low sulfur diesel) blends via common-rail injection”, Energy, 89: 932-945, (2015).
• [6] Ghasemi A., Barron R.M. and Balachandar R., “Spray-induced air motion in single and twin ultra-high injection diesel sprays”, Fuel, 121: 284-297, (2014).
• [7] Agarwal A.K., Som S., Shukla P.C., Goyal H. and Longman D. “In-nozzle flow and spray characteristics for mineral diesel, Karanja, and Jatropha biodiesels”, Applied Energy, 156: 138-148, (2015).
• [8] Lenin M.A., Swaminathan M.R. and Kumaresan G., “Performance and emission characteristics of a DI diesel engine with a nano-fuel additive”, Fuel, 109: 362-365, (2013).
• [9] Poon H.M., Pang K.M., Ng H.K., Gan S. and Schramm J., “Development of multi-component diesel surrogate fuel models – Part I: Validation of reduced mechanisms of diesel fuel constituents in 0-D kinetic simulations”, Fuel, 180: 433-441, (2016).
• [10] Wang X., Wang X. and Chen J., “Experimental investigations of density and dynamic viscosity of n-hexadecane with three fatty acid methyl esters”, Fuel, 166: 553-559, (2016).
• [11] Parmar S., Pant K.K., John M., Kumar K., Pai S.M. and Newalkar B.L. “Hydroisomerization of n-hexadecane over Pt/ZSM-22 framework: Effect of divalent cation exchange”, Journal of Molecular Catalysis A: Chemical, 404-405: 47–56, (2015).
• [12] Öztürk E., “Performance, emissions, combustion and injection characteristics of a diesel engine fueled with canola oil–hazelnut soapstock biodiesel mixture”, Fuel Process. Technol. 129: 183-191, (2015).
• [13] Çaynak S., Gürü M., Biçer A., Keskin A. and İçingür Y., “Biodiesel production from pomace oil and improvement of its properties with synthetic manganese additive, Fuel, 88: 534-538, (2009).
• [14] Tesfa, B., Mishra, R., Zhang, C., Gu, F. and Ball, A.D. “Combustion and performance characteristics of CI engine runnin with biodiesel”, Energy, 51: 101-115, (2013).
• [15] Challen B. and Baranescu R., “Diesel Engine Referance Book, Second edition”, McFarland, ISBN: 0-7506-2176-1, (1984).
• [16] Avinash A., Natarajan S. and Mahalakshmi N.V., “Lean homogenous combustion of E-diesel using external mixture formation technique”, Alexandria Engineering Journal, 54: 271-279, (2015).
• [17] Liu H., Wang Z., Wang J., He X., Zheng Y., Tang Q. and Wang J., “Performance, combustion and emission characteristics of a diesel engine fueled with polyoxymethylene dimethyl ethers (PODE3-4)/diesel blends”, Energy, 88: 793-800, (2015).
• [18] Ashraful A.M., Masjuki H.H., Kalam M.A., Rashedul H.K., Sajjad H. and Abedin M.J., “Influence of anti-corrosion additive on the performance, emission and engine component wear characteristics of an IDI diesel engine fueled with palm biodiesel”, Energy Convers. Manag. 87: 48-57, (2014).
• [19] Oliveira A., Morais A.M., Valente O.S. and Sodré J.R., “Combustion characteristics, performance and emissions from a diesel power generator fueled by B7-ethanol blends”, Fuel Process. Technol. 139: 67-72, (2015).
• [20] Keskin A., Ocakoğlu K., Reşitoğlu I.A. and Gürü M., “Influence of titanium based fuel additive on diesel engine performance and emission, J. Fac. Eng. Archit. Gazi Univ. 28 (3): 671-676, (2013).
• [21] Venu H. and Madhavan V., “Influence of diethyl ether (DEE) addition in ethanol-biodiesel-diesel (EBD) and methanol-biodiesel-diesel (MBD) blends in a diesel engine”, Fuel, 189: 377–390, (2017).
• [22] An H., Yang W.M., Maghbouli A., Li J., Chou S.K., Chua K.J., Wang J.X. and Li L., “Numerical investigation on the combustion and emission characteristics of a hydrogen assisted biodiesel combustion in a diesel engine”, Fuel, 120: 186–194, (2014).