The Experts below are selected from a list of 11826 Experts worldwide ranked by ideXlab platform
C H Buckberry - One of the best experts on this subject based on the ideXlab platform.
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a high speed all digital technique for cycle resolved 2 d flow measurement and flow visualisation within si Engine Cylinders
Optics and Lasers in Engineering, 1999Co-Authors: M Reeves, David P Towers, B Tavender, C H BuckberryAbstract:Particle image velocimetry (PIV) is now a well-established planar flow measurement technique for the study of in-cylinder flow fields in internal combustion Engines. Here the authors describe a turnkey, high-speed digital imaging system that provides combined real-time flow visualisation and rapidly processed PIV data in an industrial optical research Engine facility. The system is based on commercially available, high-speed imaging and laser technology and conventional digital cross-correlation processing to provide cycle-resolved PIV data and flow visualisation within timescales appropriate for Engine development. A simple variation on the synchronisation scheme also allows the acquisition of tens to thousands of flow visualisation sequences and PIV maps at the same crank angle, thus giving the potential for the study of cycle-to-cycle flow variability and its effect on combustion stability in a suitably instrumented optical Engine. The technique may also find applications in other unsteady or oscillatory flows of importance in aerodynamics, acoustics, mixing, and heat transfer.
Mustafa Nursoy - One of the best experts on this subject based on the ideXlab platform.
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surface properties of crn coated Engine Cylinders
Materials & Design, 2009Co-Authors: Cengiz Oner, Hanbey Hazar, Mustafa NursoyAbstract:In an experimental study performed on a single cylinder four stroke diesel Engine, the cylinder was coated with CrN by PVD and its surface behaviors were investigated. The wear behaviors of the Engine with CrN coated cylinder and with uncoated, cast iron, cylinder were compared. The effect of hardness, surface topography, microstructure, and running conditions were studied. With X-ray analysis, the structural changes on the surface due to thermal and mechanical shocks were examined.
Branca Freitas De Oliveira - One of the best experts on this subject based on the ideXlab platform.
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Design for additive manufacturing applied for mass reduction of a two-stroke Engine cylinder for portable machine
International Journal on Interactive Design and Manufacturing (IJIDeM), 2019Co-Authors: Thiago Posser, Branca Freitas De OliveiraAbstract:Metal additive manufacturing is an evolving technology not yet economically feasible for massive scale employment, but already profitable for low production volumes, especially in high-value-added segments, as well as being dominant in the prototyping industry. Since it provides significant design freedom compared to traditional manufacturing methods, it is suitable for lightweight projects with application of optimization software and bold concepts. Combustion Engine Cylinders for portable machines are complex parts that requires high investments for tooling construction of aluminum casting, which keeps the component geometry under its physical limitations. The advantages offered by the design freedom of the additive manufacturing becomes evident, through the results of this paper, where 27% of mass was reduced in an Engine cylinder model by removing the draft angles of the cooling fins and adjusting their thickness, besides the addition of lattice structures into the crankcase flange. The lattice structures design took into account the printing limitations and their mechanical strength was evaluated through structural simulation, keeping a tensile range comparable to the original geometry. Due to its high potential for functional optimizations, additive manufacturing technologies advances should remain under the industry development focus areas, since it could become relevant to the future discussions in the portable machine Cylinders production field.
M Reeves - One of the best experts on this subject based on the ideXlab platform.
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a high speed all digital technique for cycle resolved 2 d flow measurement and flow visualisation within si Engine Cylinders
Optics and Lasers in Engineering, 1999Co-Authors: M Reeves, David P Towers, B Tavender, C H BuckberryAbstract:Particle image velocimetry (PIV) is now a well-established planar flow measurement technique for the study of in-cylinder flow fields in internal combustion Engines. Here the authors describe a turnkey, high-speed digital imaging system that provides combined real-time flow visualisation and rapidly processed PIV data in an industrial optical research Engine facility. The system is based on commercially available, high-speed imaging and laser technology and conventional digital cross-correlation processing to provide cycle-resolved PIV data and flow visualisation within timescales appropriate for Engine development. A simple variation on the synchronisation scheme also allows the acquisition of tens to thousands of flow visualisation sequences and PIV maps at the same crank angle, thus giving the potential for the study of cycle-to-cycle flow variability and its effect on combustion stability in a suitably instrumented optical Engine. The technique may also find applications in other unsteady or oscillatory flows of importance in aerodynamics, acoustics, mixing, and heat transfer.
Cengiz Oner - One of the best experts on this subject based on the ideXlab platform.
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surface properties of crn coated Engine Cylinders
Materials & Design, 2009Co-Authors: Cengiz Oner, Hanbey Hazar, Mustafa NursoyAbstract:In an experimental study performed on a single cylinder four stroke diesel Engine, the cylinder was coated with CrN by PVD and its surface behaviors were investigated. The wear behaviors of the Engine with CrN coated cylinder and with uncoated, cast iron, cylinder were compared. The effect of hardness, surface topography, microstructure, and running conditions were studied. With X-ray analysis, the structural changes on the surface due to thermal and mechanical shocks were examined.