This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Evaluation of Ignition Quality of LPG with Cetane Number Improver
Technical Paper
2002-01-0870
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The objective of this study is to improve the ignition quality of LPG (liquefied petroleum gas) in order to utilize LPG as a diesel fuel. First, the relationship between the cetane numbers and ignition delay periods of primary standard fuels (mixtures of n-cetane and heptamethylnonane) and diesel fuels were investigated by measuring the ignition delay periods using a constant volume combustion chamber. As a result, it was found that a good relationship between the cetane numbers and ignition delay periods could be obtained for a 550°C combustion chamber temperature and 4MPa pressure. Also, the cetane number estimation equation was established using the ignition delay data of n-paraffins. Next, the constant volume combustion chamber was modified to evaluate the ignition delay period of LPG with a cetane number improver, and these cetane numbers were then estimated. The estimated cetane numbers of the LPG with a 15 wt % cetane number improver were more than 50 suggesting the possibility of utilizing LPG as a diesel fuel. Furthermore, the ignition quality of LPG with n-paraffins and a cetane number improver were evaluated. As a result, the ignition quality of LPG with 30wt% n-paraffin and 1wt% di-tert-butyl peroxide was equivalent to that of commercial diesel fuels. This result suggests that it is possible to develop an LPG-based diesel fuel containing a low cetane number improver.
Recommended Content
Authors
Citation
Hashimoto, K., Ohta, H., Hirasawa, T., Arai, M. et al., "Evaluation of Ignition Quality of LPG with Cetane Number Improver," SAE Technical Paper 2002-01-0870, 2002, https://doi.org/10.4271/2002-01-0870.Also In
References
- Hashimoto, K. Kawakatsu, Y. Arai, M. Tamura, M. “Study on cetane number improvement of diesel fuel” Journal of Japan Institute of Energy 74 200 204 1995
- Hashimoto, K. Yamada, H. Ohno, Y. Arai, M. Tamura, M. “A study on the effects of 2,2-dinitropropane on cetane number” Sekiyu Gakkaishi 40 524 528 1997
- Hashimoto, K. Akutsu, Y. Arai, M. Tamura, M. “Effects of azo compounds on the cetane number rating of diesel fuels” Sekiyu Gakkaishi 39 166 169 1996
- Goto, S. Lee, D. Wakao, Y. Honma, H. Mori, M. Akasaka, Y. Hashimoto, K. Motohashi, M. Konno, M. ““ SAE Paper , 1999-01-3602 1999
- Hurn, R.W. Hughes, K.J. “Combustion Characteristics of Diesel Fuels as Measured in a Constant-Volume Bomb” SAE Quart. Trans. 6 1 25 35 1952
- Siebers, D.L. “Ignition Characteristics of Alternative Diesel Fuels: Implications on Cetane Number” SAE Paper , 852102 1985
- Ryan, T. W. III “Correlation of Physical and Chemical Ignition Delay to Cetane Number” SAE Paper , 852103 1985
- Ryan, T. W. III Stapper, B. “Diesel Fuel Ignition Quality as Determined in a Constant Volume Combustion Bomb” SAE Paper , 870586 1987
- Ryan, T. W. III Callahan, T.J. “Engine and Constant Volume Bomb Studies of Diesel Ignition and Combustion” SAE Paper , 881626 1988
- Freedman, B. Bagby, M. O. Callahan, T.J. Ryan, T. W. III SAE Paper , 900343 1990
- Aligrot, C. Champoussin, J-C. Guerrassi, N. Claus, G. SAE Paper , 970638 1997
- Wolfer, H. H. Trans. Royal Aircraft Establishment 358 1950
- Russell, T. J. “Gasoline and Diesel Fuel Additives” Owen, K. Wiley & Sons New York 71 81 1989
- Hashimoto, K. Akutsu, Y. Arai, M. Tamura, M. “Chemical reaction mechanisms of cetane number improving agents” Sekiyu Gakkaishi 41 341 347 1996