1–50 von 148 Ergebnissen
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    The Dissipation of Frictional Energy from the Interface of an Annular Disc Brake

    Day, A J / Newcomb, T P | SAGE Publications | 1984
    The performance of resin bonded composite friction materials in a particular brake design is strongly dependent upon the dissipation of ...

    Tailoring Oils to Engines

    Colyer, C C | SAGE Publications | 1984
    continuous tailoring of engine oils to meet new engine requirements. The SAE/ASTM/API tripartite Engine oil performance and engine service ...

    Technical Considerations for Catalysts for the European Market

    Gandhi, H S | SAGE Publications | 1988
    The durability of automotive catalysts for European applications were investigated as a function of higher temperatures encountered in ...

    Aero Engine Ceramics—the Vision, the Reality and the Progress

    Angus, J P | SAGE Publications | 1993
    advanced materials in the world today. It consists of two-dimensional woven and laminated silicon carbide fibres in a chemical vapour infiltrated ...

    An Exhaust Emissions Based Air–Fuel Ratio Calculation for Internal Combustion Engines

    Chan, S H | SAGE Publications | 1996
    This paper describes a method for accurate determination of air–fuel ratio based upon exhaust gas emissions analysis as an alternative to ...
    Schlagwörter: chemical equilibrium

    Implications of NOy emissions from subsonic aircraft at cruise altitude

    Lee, S H / Le Dilosquer, M / Singh, R et al. | SAGE Publications | 1997
    x and HNO3 is calculated using the UGAMP three-dimensional chemical transport model. The sink of NOx ...

    Spacecraft ion propulsion development in the United Kingdom

    Fearn, D G | SAGE Publications | 1997
    The on-board propulsion system dominates the design of many spacecraft, particularly as regards mass and volume. However, the mass of this ...

    The effects of carbon dioxide in exhaust gas recirculation on diesel engine emissions

    Ladommatos, N / Adelhalim, S M / Zhao, H et al. | SAGE Publications | 1998
    The investigation was conducted on a high-speed direct injection diesel engine and was concerned with the effects of exhaust gas ...
    Schlagwörter: oxides of nitrogen

    Prediction of the effect of injection parameters on NOx emission and burning quality in the direct injection diesel engine using a modified multizone model

    Salem, H / El-Bahnasy, S. H. / Elbaz, M | SAGE Publications | 1998
    while products of combustion are assumed to be in chemical equilibrium at local temperature. The extended Zeldovich mechanism is used to predict ...

    Catalyst regeneration via chemical treatment and emission tests at idle speeds

    Arapatsakos, C. I. / Sparis, P. D. | SAGE Publications | 1999
    The present paper examines the possibility of chemical treatment of used catalysts for the purpose of improving catalytic efficiency. The ...
    Schlagwörter: chemical treatment

    Mathematical modelling of precious metals catalytic converters for diesel NOx reduction

    Kandylas, I. P. / Koltsakis, G. C. / Stamatelos, A. M. | SAGE Publications | 1999
    mathematical model of the transport and chemical phenomena in platinum-based lean-NOx catalysts was formulated, based on ...

    Computer aided engineering in diesel exhaust aftertreatment systems design

    Stamatelos, A. M. / Koltsakis, G. C. / Kandylas, I. P. et al. | SAGE Publications | 1999
    diesel oxidation or a de-NOx catalytic converter, a database containing chemical kinetics data for a variety of oxidation and de ...

    The modelling of direct chemical kinetic effects in turbulent flames

    Lindstedt, R P | SAGE Publications | 2000
    need to deal with issues such as flame stability, relight and pollutant emissions has served to bring chemical kinetics and the coupling of ...
    Schlagwörter: chemical kinetic effects

    Heat transfer and chemical kinetics in the exhaust system of a cold-start engine fitted with a three-way catalytic converter

    Chan, S. H. / Hoang, D. L. / Zhou, P. L. | SAGE Publications | 2000
    water condensation and evaporation at the walls of the exhaust manifold/pipe and monolith cells, and the chemical reactions of CO/HC/NO in the ...
    Schlagwörter: chemical kinetics

    A comparison of the relative effects of fuel composition and ignition energy on the early stages of combustion in a natural gas spark ignition engine using simulation

    Yossefi, D / Belmont, M. R. / Ashcroft, S. J. et al. | SAGE Publications | 2000
    Spark ignition engines operating on natural gas (NG) show advantages over petrol and diesel alternatives in terms of precatalyst emissions ...

    Fabrication and characterization of polyurethane-coated fabrics for collapsible diesel tanks

    Velan, T. V. T. / Bilal, I. M. / Arumugham, S | SAGE Publications | 2000
    respectively) with low free isocyanates were used to fabricate coated fabrics. The physical, chemical and mechanical properties of these coated fabrics ...

    Modelling NOx emissions from spark-ignition engines

    Sodré, J. R. | SAGE Publications | 2000
    A rapid chemical equilibrium composition model was applied to calculate the main combustion products from spark-ignition engines. The ...
    Schlagwörter: oxides of nitrogen

    Numerical simulation of high-speed turbulent reacting coaxial jet flow using a structured grid

    Mehta, R C | SAGE Publications | 2000
    continuity equations that provide for the convection, diffusion and production of each chemical species. The closure of the system of equations is ...

    Identification of chemical and vibrational relaxation regimes in rocket nozzle flow via a quasi-linear formulation

    Lentini, D | SAGE Publications | 2001
    A quasi-linear formulation is proposed for high-speed finite-rate chemically reacting mixtures of imperfect gases, i.e. thermally perfect ...

    Understanding of controlled autoignition combustion in a four-stroke gasoline engine

    Zhao, H / Peng, Z / Ladommatos, N | SAGE Publications | 2001
    and particulate emissions. Since CAI combustion is a process dominated by chemical kinetics of the fuel-air mixture, an engine simulation ...

    A new strategy for improving the warm-up performance of a light-off auto-catalyst for reducing cold-start emissions

    Jeong, S-J / Kim, W-S | SAGE Publications | 2001
    Light-off catalysts are often used to minimize cold-start emissions. The improved coldstart performance of light-off catalysts (LOCs) needs ...
    Schlagwörter: chemical reaction

    Mathematical modelling of catalytic exhaust systems for EURO-3 and EURO-4 emissions standards

    Pontikakis, G / Stamatelos, A | SAGE Publications | 2001
    of representative chemical reactions. In this paper it is proved, by means of typical case studies, that the above modelling approach, with ...

    The development of a two-dimensional transient catalyst model for direct injection two-stroke applications

    McCullough, G / Douglas, R / Cunningham, G et al. | SAGE Publications | 2001
    , properties and chemical processes simulated by the model and discusses the limitations and assumptions applied. A review of the modelling techniques ...

    The validation of a two-dimensional transient catalyst model for direct injection two-stroke applications

    McCullough, G / Douglas, R / Cunningham, G et al. | SAGE Publications | 2001
    This paper describes the detailed validation of a computer model designed to simulate the transient light-off in a two-stroke oxidation ...

    Combustion modelling for direct injection diesel engines

    Micklow, G. J. / Gong, W. | SAGE Publications | 2001
    Successful modelling of combustion systems depends on an adequate as well as a computationally efficient description of the reaction ...
    Schlagwörter: chemical kinetics

    A direct injection diesel combustion model for use in transient condition analysis

    Cui, Y / Deng, K / Wu, J | SAGE Publications | 2001
    velocity distribution of fuel spray, zonal entrainment and the calculation of gas properties and chemical equilibrium compositions of combustion ...

    Modelling the impacts of aircraft traffic on the chemical composition of the upper troposphere

    Giannakopoulos, C / Good, P / Law, K S et al. | SAGE Publications | 2003
    A three-dimensional chemistry-transport model has been used to assess the impacts of aircraft traffic in the upper troposphere. Aircraft ...
    Schlagwörter: chemical perturbations

    Changes at interfaces of friction components during braking

    Holinski, R / Hesse, D | SAGE Publications | 2003
    chemical effects occur that result in surface changes of friction elements. These changes determine the service life of friction components and the ...

    Composition and size of diesel particulate emissions from a commercial European engine tested with present and future fuels

    Lapuerta, M / Hernández, J J / Ballesteros, R et al. | SAGE Publications | 2003
    and tested with fourteen types of conventional and alternative fuel are reported. The chemical analysis of the emitted particulate matter ...

    On-board conversion of alcohols to ethers for fumigation in compression ignition engines

    Armbruster, H / Stucki, S / Olsson, E et al. | SAGE Publications | 2003
    Fumigation of dimethyl ether (DME) is an interesting option for using methanol as a fuel in compression ignition engines. In this concept ...

    Identification of catalytic converter kinetic model using a genetic algorithm approach

    Pontikakis, G N / Stamatelos, A M | SAGE Publications | 2004
    optimization procedure, for fast and accurate estimation of the set of tuneable kinetic parameters that describe the chemical behaviour of each ...

    Differentiation of lubricant degradation in the piston ring groove and crown land by multivariate data analysis

    Aruna, M A / Fox, M F | SAGE Publications | 2004
    positions on the piston of an operating petrol engine. Chemical and physical analysis of the lubricants obtained from the two sampling positions ...
    Schlagwörter: chemical and physical analyses

    Influence of variable valve timings on the gas exchange process in a controlled auto-ignition engine

    Milovanovic, N / Chen, R / Turner, J | SAGE Publications | 2004
    combustion is controlled by the chemical kinetics of the charge mixture, with no influence of the flame diffusion or turbulent propagation. Therefore ...

    Effect of Fuel injection timing with waste cooking oil as a fuel in a direct injection diesel engine

    Bari, S / Yu, C W / Lim, T H | SAGE Publications | 2004
    physical and chemical properties of vegetable oils are known to be different from those of diesel. This study examines the changes in the behaviour ...

    A diesel particulate filter regeneration model with a multi-step chemical reaction scheme

    Law, M C / Clarke, A / Garner, C P | SAGE Publications | 2005
    important to understand the fundamentals of the regeneration process. Previous soot oxidation regeneration models relied on tunable chemical kinetic ...
    Schlagwörter: chemical

    Numerical study of the combustion mechanism of a homogeneous charge compression ignition engine fuelled with dimethyl ether and methane, with a detailed kinetics model. Part 2: the reaction kinetics of dimethyl ether and methane dual-fuel

    Yao, M / Qin, J / Zheng, Z | SAGE Publications | 2005
    A numerical study was carried out using a zero-dimensional detailed chemical kinetics model to investigate the chemical reaction phenomena ...
    Schlagwörter: chemical reaction kinetics

    Study on the effect of different combinations of engine coolant additives on the heat dissipation rate of radiators

    Sathyanarayanan, P L / Ramprabhu, R | SAGE Publications | 2005
    governed by its composition and thereby its physical and chemical properties. Thus, a study on the effects of different combinations of engine ...

    Numerical study of the combustion mechanism of a homogeneous charge compression ignition engine fuelled with dimethyl ether and methane, with a detailed kinetics model

    Yao, M / Qin, J / Zheng, Z | SAGE Publications | 2005
    . Based on the sensitivity analysis of chemical reactions, the major paths of the DME reaction occurring in the engine cylinder are clarified. The ...

    Experimental investigation of the characteristics of an NOx reduction system for a dimethyl ether engine

    Lee, Seang-Wock / Satio, Yoshio | SAGE Publications | 2005
    number close to that of diesel fuel, secondly, an innovative chemical process has been developed for much production of DME efficiently from ...

    Effects of dimethyl carbonate fuel additive on diesel engine performances

    Zhang, G D / Liu, H / Xia, X X et al. | SAGE Publications | 2005
    The physical and chemical properties of some oxygenated compounds are discussed, including dimethoxymethane (methylal, or DMM), dimethyl ...

    Study of diesel-fuelled homogeneous charge compression ignition combustion by in-cylinder early fuel injection and negative valve overlap

    Shi, L / Deng, K / Cui, Y | SAGE Publications | 2005
    recirculation (EGR) in the cylinder. The effects of the engine load, speed, inlet temperature, external EGR, and internal EGR on HCCI combustion and ...

    An Investigation on a New Reduced Chemical Kinetic Model of n-heptane for HCCI Combustion

    Yao, Mingfa / Zheng, Zhaolei | SAGE Publications | 2006
    Detailed chemical kinetic calculations coupled with computational fluid dynamics simulations of chemically reacting flows are still ...
    Schlagwörter: reduced chemical kinetic model

    Differentiation between ‘good’, ‘borderline’, and ‘poor’ ASTM lubricant standards by ring zone sampling and multivariate data analysis

    Aruna, M A / G Datoo, A N / Fox, M F | SAGE Publications | 2006
    lubricants was investigated by piston ring zone sampling from an operating petrol engine over 25 hour test runs. Chemical/physical analyses of the ...
    Schlagwörter: chemical/physical analyses

    A chemically informed, control-oriented model of a three-way catalytic converter

    Soumelidis, M I / Stobart, R K / Jackson, R A | SAGE Publications | 2007
    Chemical activity inside a three-way catalytic converter (TWC) is highly complex and usually is not taken into account when developing TWC ...
    Schlagwörter: chemical modelling

    Enhancement of the combustion process in dual-fuel engines at part loads using exhaust gas recirculation

    Pirouzpanah, V / Saray, R Khoshbakhti | SAGE Publications | 2007
    combustion model with detailed chemical kinetics for combustion of natural gas fuel. The authors have developed software in which the pilot fuel is ...
    Schlagwörter: chemical kinetics

    Effect of additives on ignition of methane at homogeneous charge compression ignition engine-like conditions

    Morsy, M H / Chung, S H | SAGE Publications | 2007
    (H2O2) for the control of ignition of methane fuel in HCCI engines has been investigated numerically. The chemical kinetic mechanisms ...

    Numerical simulation of homogeneous charge compression ignition combustion using a multi-dimensional model

    Jia, Ming / Xie, Maozhao | SAGE Publications | 2007
    A detailed chemical kinetics model was used in a computational fluid dynamics (CFD) code to study the combustion process of a homogeneous ...

    Modelling of the selective catalytic NOx reduction in diesel exhaust including ammonia storage

    Tsinoglou, D / Koltsakis, G | SAGE Publications | 2007
    previously published mathematical model. The chemical phenomena are described by global reactions for the oxidation of ammonia and the reduction of ...

    Modelling three-way catalytic converters: An effort to predict the effect of precious metal loading

    Konstantas, G / Stamatelos, A M | SAGE Publications | 2007
    cannot predict this effect. Recent improvements in the core chemical reaction modelling of the CATRAN code, reported in this paper, allow a good ...

    Engineering nanostructures at surfaces using nanolithography

    Diegoli, S / Hamlett, C A E / Leigh, S J et al. | SAGE Publications | 2007
    In just a few years, exploring nanostructured materials has become a new theme common to many disciplines of science and engineering ...