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Experimental Study on Performance, Emissions and Combustion Characteristics of a Single Cylinder Dual Fuel LPG/Diesel Engine
Technical Paper
2011-32-0562
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper shows experimental results on engine's characteristics in a single cylinder diesel Common Rail engine AVL5402 converted to LPG/diesel dual fuel.
Findings from the study show that at full load, higher LPG mass fraction can be reached at lower engine speed due to knocking limit however the economic efficiency with dual fuel is better at higher engine speeds as at these operating regimes the better injection quality and better fuel evaporation can help combustion improve. Comparing to the original engine, when LPG/diesel dual fuel is used, the smoke number and carbon monoxide (CO) decreases at almost all running modes while total hydrocarbon (THC) and nitrogen oxide (NOx) are higher. The improvement of combustion process is a reason for lower smoke number and CO, and higher NOx emissions. Higher THC is explained by unburned hydrocarbon, mainly unburned LPG-air mixture.
Advancing diesel injection timing and increasing pilot injection timing at full load, 1400 rpm and 2000 rpm speeds present similar effects in engine's performance and exhaust emissions. Of which, there is no significant changes of engine's power, the ignition time is advanced, and CO and smoke number are reduced but THC and NOx. In addition, the noise of the engine is reduced remarkably with pilot injection as it help reduce pressure rise rate.
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Citation
Le, T. and Nguyen, T., "Experimental Study on Performance, Emissions and Combustion Characteristics of a Single Cylinder Dual Fuel LPG/Diesel Engine," SAE Technical Paper 2011-32-0562, 2011, https://doi.org/10.4271/2011-32-0562.Also In
References
- Stanislav, Beroun The development of gas (CNG, LPG and H2) engines for buses and trucks and their emission and cycle variability characteristics Society of Automotive Engineers Inc. 2001-01-0144
- Karim, GA Zhigang, L. A predictive model for knock in dual fuel engines SAE Paper 921550 1992
- Zhili, Chen et.al. Study on homogenous premixed charge CI engine fueled with LPG JSAE Rev 2001 22 3
- Kihyung, Lee Jeaduk, Ryu Experimental study of the flame propagation and combustion characteristics of LPG fuel Fuel 2005 84 9
- Saleh, H.E. Effect of variation in LPG composition on emissions and performance in a dual fuel diesel engine Fuel 87 2008 3031 3039
- Qi, D.H. et.al. Combustion and exhaust emission characteristics of a compression ignition engine using liquefied petroleum gas-Diesel blended fuel Energy Conversion and Management 48 500 508 2006
- Tuyen, Pham Huu Tuan, Le Anh et.al. A study on dual fuel application of LPG/Diesel for diesel engine Journal of Transport 0866-7012 2011
- AVL Single Cylinder Research Engine Test-Bed Graz 2002
- AVL Emission bench (CEB II) Graz 2002