Abstract
From our perspective, a global technology development should be focused on resolving the issues of environmental impact and conservation of available natural energy resources. New technological solutions and alternative fuels, such as Compressed Natural Gas (CNG), have increasingly more application for modern engines and vehicles. If we take into account the situation in city transport, where primarily vehicles with diesel engines are used, a strategic proposal is to begin by retrofitting these into bi-fuel or dedicated Natural Gas Vehicles (NGVs). This paper analyzes the retrofit of a diesel bus into dedicated NGV. To confirm the safety of the vehicle in city transport, we addressed the problem of mounting a gas rack with CNG cylinders on the roof of a retrofitted city bus, according to UN ECE Regulation No. 110. This assembly is the most critical part of the retrofitted bus because of the concentration of stress due to increased mass and the application of a specific installation for supply of CNG from the cylinders to the engine. These regulations must be met in all parts of the vehicle, but we only focused on those areas affected by the retrofit to NGV.
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References
Ale Ebrahim, N., Rostamnezhad, M. and Momeni, A. (2005). Research, development, production and performance of heavy duty CNG fleets in Iran. ANGVA 2005, 1–13.
Cho, H. M. and He, B.-Q. (2008). Combustion and emission characteristics of a lean burn natural gas engine. Int. J. Automotive Technology 9,4, 415–422.
ISO/DIS 11439 (2000). Gas Cylinders, High Pressure Cylinders for the On-board Storage of Natural Gas as a Fuel for Automotive Vehicles. ISO.
Kojic, M., Slavkovic, R., Zivkovic, M. and Grujovic, N. (1994). Domestic package “PAK” for linear and nonlinear structural analysis, heat conduction and fluid mechanics. CAD Forum, Novi Sad, 130–135.(In Serbian)
Liang, C.-C. and Le, G.-N. (2010). Optimization of bus rollover strength by consideration of the energy absorption ability. Int. J. Automotive Technology 11,2, 173–185.
Liang, C.-C. and Le, G.-N. (2010). Analysis of bus rollover protection under legislated standards using LS-DYNA software simulation techniques. Int. J. Automotive Technology 11,4, 495–506.
Milojevic, S. and Pesic, R. (2011). CNG buses for clean and economical city transport. Int. J. Vehicle Mech., Engines and Transportation Syst. 37,4, 57–71. SRB.
Milojevic, S., Pesic, R. and Ilic, N. (2009). The first CNG powered serbian low-floor city bus. 9th Int. Conf. Demi. BA.
Rasche, C. (2009). Advanced Lightweight Fuel Storage Systems™. Dynetek Europe GmbH Presentation. http://www.dynetek.com/pdf/AGMPresentation2009.pdf, Accessed on 17 June 2011.
Stocchetti, A. and Volpato, G. (2010). In quest for a sustainable motorization: The CNG opportunity. MPPA Paper No. 31190, 1–20.
United Nations (2008). Specific Components of Motor Vehicles Using CNG in Their Propulsion System. UN ECE Regulation No. 110, Add. 109.
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Milojevic, S., Pesic, R. Theoretical and experimental analysis of a CNG cylinder rack connection to a bus roof. Int.J Automot. Technol. 13, 497–503 (2012). https://doi.org/10.1007/s12239-012-0047-y
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DOI: https://doi.org/10.1007/s12239-012-0047-y