The Experts below are selected from a list of 303 Experts worldwide ranked by ideXlab platform

Mevlüt Süreyya Koçak - One of the best experts on this subject based on the ideXlab platform.

  • the effect of biodiesel fuel obtained from waste frying oil on direct injection diesel Engine performance and exhaust emissions
    Renewable Energy, 2008
    Co-Authors: Zafer Utlu, Mevlüt Süreyya Koçak
    Abstract:

    In this study, usage of methyl ester obtained from waste frying oil (WFO) is examined as an experimental material. A reactor was designed and installed for production of methyl ester from this kind of oil. Physical and chemical properties of methyl ester were determined in the laboratory. The methyl ester was tested in a diesel Engine with turbocharged, four cylinders and direct injection. Gathered results were compared with No. 2 diesel fuel. Engine Tests results obtained with the aim of comparison from the measures of torque, power; specific fuel consumptions are nearly the same. In addition, amount of emission such as CO, CO2, NOx, and smoke darkness of waste frying oils are less than No. 2 diesel fuel.

  • The effect of biodiesel fuel obtained from waste frying oil on direct injection diesel Engine performance and exhaust emissions
    Renewable Energy, 2008
    Co-Authors: Zafer Utlu, Mevlüt Süreyya Koçak
    Abstract:

    In this study, usage of methyl ester obtained from waste frying oil (WFO) is examined as an experimental material. A reactor was designed and installed for production of methyl ester from this kind of oil. Physical and chemical properties of methyl ester were determined in the laboratory. The methyl ester was tested in a diesel Engine with turbocharged, four cylinders and direct injection. Gathered results were compared with No. 2 diesel fuel. Engine Tests results obtained with the aim of comparison from the measures of torque, power; specific fuel consumptions are nearly the same. In addition, amount of emission such as CO, CO2, NOx, and smoke darkness of waste frying oils are less than No. 2 diesel fuel. © 2007 Elsevier Ltd. All rights reserved.

Gérard Barbezat - One of the best experts on this subject based on the ideXlab platform.

  • advanced thermal spray technology and coating for lightweight Engine blocks for the automotive industry
    Surface & Coatings Technology, 2005
    Co-Authors: Gérard Barbezat
    Abstract:

    Abstract New advanced thermal spray technology allows providing wear-resistant coatings on the cylinder surface of aluminum or magnesium Engines. The obtained special surface topography after the finishing allows to decrease significantly the coefficient of friction and to decrease the fuel consumption from 2% to 4%. Engine Tests on diesel and gasoline Engines have confirmed the value of this technology regarding the aspect of energy saving. This coating technology is introduced since 4 years in Europe by the manufacturing of high power diesel, respectively, gasoline Engines. The combination of different MMC coating materials allows the development of new specific solutions for each types of Engine. Coatings with improved corrosion resistance and abrasion resistance were also developed and are available now. A brief overview on other applications of thermal spraying in the automotive industry will be given also.

  • Advanced thermal spray technology and coating for lightweight Engine blocks for the automotive industry
    Surface and Coatings Technology, 2005
    Co-Authors: Gérard Barbezat
    Abstract:

    New advanced thermal spray technology allows providing wear-resistant coatings on the cylinder surface of aluminum or magnesium Engines. The obtained special surface topography after the finishing allows to decrease significantly the coefficient of friction and to decrease the fuel consumption from 2% to 4%. Engine Tests on diesel and gasoline Engines have confirmed the value of this technology regarding the aspect of energy saving. This coating technology is introduced since 4 years in Europe by the manufacturing of high power diesel, respectively, gasoline Engines. The combination of different MMC coating materials allows the development of new specific solutions for each types of Engine. Coatings with improved corrosion resistance and abrasion resistance were also developed and are available now. A brief overview on other applications of thermal spraying in the automotive industry will be given also. © 2005 Elsevier B.V. All rights reserved.

Zafer Utlu - One of the best experts on this subject based on the ideXlab platform.

  • the effect of biodiesel fuel obtained from waste frying oil on direct injection diesel Engine performance and exhaust emissions
    Renewable Energy, 2008
    Co-Authors: Zafer Utlu, Mevlüt Süreyya Koçak
    Abstract:

    In this study, usage of methyl ester obtained from waste frying oil (WFO) is examined as an experimental material. A reactor was designed and installed for production of methyl ester from this kind of oil. Physical and chemical properties of methyl ester were determined in the laboratory. The methyl ester was tested in a diesel Engine with turbocharged, four cylinders and direct injection. Gathered results were compared with No. 2 diesel fuel. Engine Tests results obtained with the aim of comparison from the measures of torque, power; specific fuel consumptions are nearly the same. In addition, amount of emission such as CO, CO2, NOx, and smoke darkness of waste frying oils are less than No. 2 diesel fuel.

  • The effect of biodiesel fuel obtained from waste frying oil on direct injection diesel Engine performance and exhaust emissions
    Renewable Energy, 2008
    Co-Authors: Zafer Utlu, Mevlüt Süreyya Koçak
    Abstract:

    In this study, usage of methyl ester obtained from waste frying oil (WFO) is examined as an experimental material. A reactor was designed and installed for production of methyl ester from this kind of oil. Physical and chemical properties of methyl ester were determined in the laboratory. The methyl ester was tested in a diesel Engine with turbocharged, four cylinders and direct injection. Gathered results were compared with No. 2 diesel fuel. Engine Tests results obtained with the aim of comparison from the measures of torque, power; specific fuel consumptions are nearly the same. In addition, amount of emission such as CO, CO2, NOx, and smoke darkness of waste frying oils are less than No. 2 diesel fuel. © 2007 Elsevier Ltd. All rights reserved.

Filiz Karaosmanoglu - One of the best experts on this subject based on the ideXlab platform.

  • the Engine Tests of biodiesel from used frying oil
    Energy Sources, 2004
    Co-Authors: Yahya Ulusoy, Yucel Tekin, Merve Cetinkaya, Filiz Karaosmanoglu
    Abstract:

    Biodiesel is an environmentally friendly and a renewable alternative diesel fuel that can be used in diesel Engines with little or no modification. Used frying oil is one of the raw materials which can be used for biodiesel production. The objective of this study was to investigate the effects of used frying oil originated from biodiesel on Engine performance and emissions in a Fiat Doblo 1.9 DS, four-cylinder, four-stroke, 46 kW power capacity diesel Engine. Comparative measurements with no. 2 diesel fuel were conducted on both Engine power and emission characteristics of each of the fuel used. Biodiesel, when compared to no. 2 diesel fuel, showed reduction in wheel force over 3.35% and it also reduced the wheel power by over 2.03%. In the acceleration Tests, 40–100 km/h and 60–100 km/h acceleration periods were measured and a reduction of 7.32% and 8.78% were observed, respectively. According to emission Tests, as a result of biodiesel consumption, a reduction of 8.59% in CO emission and an increase of ...

  • Long term CI Engine test of sunflower oil
    Renewable Energy, 1999
    Co-Authors: Filiz Karaosmanoglu, G Kurt, Turgut Ozaktas
    Abstract:

    Oil seed plants have been one of the biomass sources of fuel. Vegetable oils may be employed in CI Engines as an alternative fuel. In this study, diesel fuel properties of sunflower oil were determined and long term Engine Tests of sunflower oil were performed. Engine Tests were conducted at a speed of 1600 rpm under part load condition for 50 h with a single-cylinder (volume: 1007 cm3) direct injection, air cooled diesel Engine, having a bore/stroke ratio of 108:110 mm. An overall evaluation of results indicates that the sunflower oil can be proposed as a possible candidate for diesel fuel.

  • performance and emission characteristics of a diesel Engine operating on safflower seed oil methyl ester
    Applied Biochemistry and Biotechnology, 1994
    Co-Authors: A Işigigur, Filiz Karaosmanoglu, H A Aksoy, F Hamdullahpur, Omer L Gulder
    Abstract:

    This study focused on the evaluation and testing of safflower seed oil methyl ester as a diesel fuel alternative. The kinematic viscosity and ASTM fuel properties of the methyl ester fuel were within the limits specified for Grade No.2-D diesel fuel. Engine Tests were performed on a four-cylinder, direct-injection CI Engine using methyl ester and reference diesel fuel; Engine performance and exhaust emission characteristics were determined. Safflower seed oil methyl ester revealed similar Engine performance characteristics to the reference Grade No.2-D diesel fuel. Lower CO and HC emissions were obtained when methyl ester was used, and the negligible amount of sulfur content was an additional advantage of methyl ester over diesel fuel.

Alfons Fischer - One of the best experts on this subject based on the ideXlab platform.

  • microstructural alterations within thermal spray coatings during highly loaded diesel Engine Tests
    Wear, 2009
    Co-Authors: Mareike Hahn, R Theissmann, B Gleising, W Dudzinski, Alfons Fischer
    Abstract:

    Abstract The good wear characteristics of thermal spray coatings are related to structural, productional, and topographical properties. Finally, the alteration of the microstructure in different contact zones is essential for mild wear conditions that will guarantee a long-life cycle because it reveals the ability of the material to adjust to the current load situation. Previous studies have shown that in diverse tribosystems an in situ formation of a nanocrystalline layer together with mechanical mixing maintains long-lasting, wear resistant surfaces with low wear rates. This investigation exemplifies results from a cylinder that was run in a road test motor. The relevant piston ring positions that fully describe the tribosystem have to be defined at the combustion chamber (CC), top dead centre (TDC), stroke and bottom dead centre (BDC). Transmission electron microscopy (TEM) and energy-filtered transmission electron microscopy (EFTEM) are used to analyse these contact zones in terms of microstructure and chemistry. Nanocrystalline surface layers up to a thickness of 100 nm occurred in all areas of contact whereas subsurface zones revealed differing microstructural changes. Thus the influence of thermal impact and different mechanical load conditions in a motor cylinder are evident. EFTEM elemental mappings verify the incorporation of elements that stem from lubrication or combustion residues.