Abstract
This research investigated the spray and combustion characteristics of compressed ignition type LPG fuel when a cetane number enhancing additive was applied to a constant volume chamber. Because LPG has a lower cetane number, DTBP and alpha olefin were added to the LPG (100% butane) to enhance the cetane number and viscosity. By adding the cetane enhancer, stable combustion over the wide range of the ambient conditions was possible as well. According to the blending rates of DTBP and alpha olefin, various proportions of LPG blended fuels were obtained. In a constant volume chamber, a high speed digital camera was also employed to visualize the combustion characteristics of LPG fuel. The combustion pressures and heat-release rates of the LPG blends were also compared at various ambient pressures. As the results of measurements of exhaust emissions, CO and HC were reduced considerably, but CO2 was increased by blending LPG with DTBP and alpha olefin.
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References
Alam, M., Goto, S., Sugiyama, K., Kajiwaara, M., Mori, M., Konno, M., Motohashi, M. and Oyama, K. (2001). Performance and emissions of a DI diesel engine operated with LPG and ignition improving additives. SAE Paper No. 2001-01-3680.
Goto, S., Lee, D., Wakao, Y., Honma, H., Mori, M., Akasaka, Y., Hashimoto, K., Motohashi, M. and Konno, M. (1999). Development of an LPG diesel engine using cetane number enhancing additives. SAE Paper No. 1999-01-3602.
Goodrich, B., McDuff, P., Krupa, C., Alvarez, L., Williams, A. and Dejovine, J. (1998). A no-harm test matrix investigating the effect of di-tert-butyl peroxide (DTBP) cetane number improver on diesel fuel properities. SAE Paper No. 982574.
Hashimoto, K., Ohta, H., Hirasawa, T., Arai, M. and Tamura, M. (2002). Evaluation of ignition quality of LPG with cetane number improver. SAE Paper No. 2002-01-0870.
Lee, S. and Daisho, Y. (2004). Spray characteristics of directly injected LPG. Int. J. Automotive Technology 5,4, 239–245.
Sobiesiak, A., Hoag, M. and Battoei-Avarzaman, M. (2003). Injector durability and emissions from liquid LPG port-injected spark ignition engine. SAE Paper No. 2003-01-3090.
Sugiyama, K., Kajiwara, M., Iwama, M., Mori, M., Oguma, M., Kinoshita, K. and Goto, S. (2003). Performance and emissions of a DI diesel engine operated with LPG and cetane enhancing additives. SAE Paper No. 2003-01-1920.
Thompson, A., Lambert, S. and Mulqueen, S. (1997). Prediction and precision of cetane number improver response equations. SAE Paper No. 972901.
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Lee, S.W., Cho, Y.S. & Baik, D.S. Effect of cetane enhancer on spray and combustion characteristics of compressed ignition type LPG fuel. Int.J Automot. Technol. 11, 381–386 (2010). https://doi.org/10.1007/s12239-010-0047-8
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DOI: https://doi.org/10.1007/s12239-010-0047-8