Evaluation of the effect of variable compression ratios performance on opposed piston 2-stroke engine
 
More details
Hide details
1
School of Mechanical Engineering at University of Birmingham.
 
2
Faculty of Mechanical Engineering at University of Birmingham
 
3
Faculty of Power and Aeronautical Engineering at Warsaw University of Technology.
 
 
Publication date: 2017-11-01
 
 
Combustion Engines 2017,171(4), 97-106
 
KEYWORDS
ABSTRACT
Numerous skills involving the introduction of (OP) opposed piston engine have been developed in the recent past. Indeed, novel techniques can help to improve the performance of the engine. The aim of this paper is to model and simulate a simple single-cylinder two-stroke opposed-piston engine and minimise fuel consumption and heat loss, using the software programme AVL BOOST™. AVL BOOST is an engine modelling software, which analyses the performance of a modelled single cylinder two-stroke opposed-piston engine by changing desired parameters. In order to meet this aim, experimental results from a unique engine are used to make a comparison with the results obtained from AVL BOOST model. Six combinations of compression ratios (12, 13.5, 15, 16.5, 18 and 19.5) are analysed in this study with the engine speed running at 420 rpm and 1500 rpm. In addition to the compression ratios, the effect of stroke-to-bore (S/B) ratios on OP2S performance is investigated. Various values of S/B ratios, whilst maintaining a constant swept volume, port geometry and combustion timing, and their effect on fuel consumption and heat loss are analysed in this study. A comparison between the two engine speeds with increasing combinations of compression ratios, and the S/B ratios revealed minimal differences in peak pressure, peak temperature, IMEP, ISFC, indicated efficiency and total heat loss. Detailed analyses of these parameters are highlighted in discrete sections of this paper.
 
REFERENCES (11)
1.
REGNER, G., HEROLD, R., WAHL, M. et al. The Achates power opposed-piston two-stroke engine: performance and emissions results in a medium-duty application. SAE Int. J. Engines. 2011, 4(3), 2726-2735.
 
2.
PIRAULT, J.-P., FLINT, M. Opposed piston engines: evolution, use, and future applications. SAE International. Warrendale, 2009.
 
3.
Achates. A Historical Look at Opposed-Piston Engines. 2011. (online) Available at: achatespower.com/opposedpiston-engine-history (accessed 19.10.2016).
 
4.
Tank and AFV News. Ukraine announces 1500 HP version of 6TD engine. 2016. (online) Available at: tankandafvnews.com/2016/05/24/ukraine-announces-1500hpversion-of-6td-engine (accessed 20.10.2016).
 
5.
HEROLD, R., WAHL, M., REGNER, G. et al. Thermodynamic benefits of opposed-piston two-stroke engines. SAE Technical Paper. 2011, 2011-01-2216.
 
6.
VENUGOPAL, R., ABANI, N., MACKENZIE, R. Effects of injection pattern design on piston thermal management in an opposed-piston two-stroke engine. SAE Technical Paper. 2013, 2013-01-2423.
 
7.
OPALIŃSKI, M., MAZURO, P., WYSZYNSKI, M. Comparison of flow performance in one and three dimensional software for modelling of opposed piston engines. Archivum Combustions. 2015, 35(1).
 
8.
MA, F., ZHAO, C., ZHANG, F. et al. An experimental investigation on the combustion and heat release characteristics of an opposed-piston folded-cranktrain diesel engine. Energies. 2015, 8(7), 6365-6381.
 
9.
XU, H.M. Powertrain lectures: engine operating dynamics. University of Birmingham. 2017.
 
10.
HEYWOOD, J.B. Internal combustion engine fundamentals. McGraw-Hill, 1988.
 
11.
LANCASTER, D.R, KREIGER, R.B., LIENESCH, J.H. Measurement and analysis of engine pressure data. SAE Technical Paper. 1975, 750026.
 
 
CITATIONS (1):
1.
 
eISSN:2658-1442
ISSN:2300-9896
Journals System - logo
Scroll to top