Influence of Biocellulose Derived Fuel Blends on Injection Properties
Today, 88 % from the total amount of energy used worldwide is represented by fossil fuels (oil, natural gas and coal). Oil dependence required a diversification of fuels in the transport sector in general and road transport in order to stop global warming
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Abstract Today, 88 % from the total amount of energy used worldwide is represented by fossil fuels (oil, natural gas and coal). Oil dependence required a diversification of fuels in the transport sector in general and road transport in order to stop global warming. Alternative fuels difference slightly in terms of such phisical properties as: density, viscosity and bulk modulus, properties which influence the fuel injection parameters such as penetrability, Sauter Mean Diameter and vaporization rate. The European Union adopted Directive 2003/30/EC to enforce the use of biofuels and other alternative fuels. EU member states must achieve a target of 20 % of alternative fuels used in the transport sector. These lead to different combustion characteristics. The main objective of this paper is to determine the influence of alternative fuels produced by Fischer–Tropsch synthesis from the gasification of biomass used for compression ignited engines. Keywords Biofuels
Diesel injection Coupled 1D–3D simulations
1 Considerations Regarding the Tested Fuels In order to evaluate the influence of biofuel characteristics on ICE performances, experimental research has be done in virtual and real environment. The tendency is to increase the concentration of synthetic fuels in the mixture leading to a 50 % after 2020. F2012-A02-015 S. Sacareanu (&) A. Chiru A. B. Muntean Transilvania University of Brasov, Brasov, Romania e-mail: [email protected] C. Stan University of Applied Science, Zwickau, Germany
SAE-China and FISITA (eds.), Proceedings of the FISITA 2012 World Automotive Congress, Lecture Notes in Electrical Engineering 189, DOI: 10.1007/978-3-642-33841-0_29, Springer-Verlag Berlin Heidelberg 2013
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In this study, mixtures of FT fuel and classic diesel have been used during numerical simulations. The concentrations were 20 % FT fuel and 80 % fossil diesel named FT20, and 50 % FT fuel and 50 % fossil diesel named FT50. These specific concentrations were chosen based on the European Commission Directive 2003/30/CE. Pure FT fuel combustion performances have been also studied. ICE’s energetic and ecologic parameters are in a direct dependence on fuels characteristics and on injection systems performances. Thus, it is necessary to optimize injection system’s the parameters (penetrability, fuels spray atomization, pressure, injected volume) of the injection system considering the working regime and the fuel used. The optimization of the injection system requires experimental research as well as numerical simulations. In the last decade, the techniques of numerical simulations have evolved, presenting advantages such as possibilities of substantial time saving analysis, reduced number of materials, an increased number of parameters being studied, both design and functional, ease in designing a prototype stand. The properties of the fuels investigated in this work are presented in Table 1. To be able to use the advantages of numerical simulations, the application must comply with cer
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