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Viewing 1 to 35 of 35
Technical Paper
2017-03-28
Author(s): Kurimoto, N., Watanabe, N., Hoshi, S., Sasaki, S. et al.
Abstract A methodology for simulating effect of international variations in fuel compositions on spray combustion is proposed. The methodology is validated with spray combustion experiments with real ....
Journal Article
2017-03-28
Author(s): Burke, S., Ratcliff, M., McCormick, R., Rhoads, R. et al.
Abstract In some studies, a relationship has been observed between increasing ethanol content in gasoline and increased particulate matter (PM) emissions from vehicles equipped with spark ignition eng....
Technical Paper
2017-03-28
Author(s): Abidin, Z., Hoag, K., and Badain, N.
Abstract The promising D-EGR gasoline engine results achieved in the test cell, and then in a vehicle demonstration have led to exploration of further possible applications. A study has been conducted....
Technical Paper
2017-03-28
Author(s): Chevillard, S., Colin, O., Bohbot, J., Wang, M. et al.
Abstract Nowadays Spark Ignition (SI) engine developments focus on downsizing, in order to increase the engine load level and consequently its efficiency. As a side effect, knock occurrence is strongl....
Journal Article
2017-03-28
Author(s): Pal, P., Probst, D., Pei, Y., Zhang, Y. et al.
Abstract Fuels in the gasoline auto-ignition range (Research Octane Number (RON) > 60) have been demonstrated to be effective alternatives to diesel fuel in compression ignition engines. Such fuels al....
Technical Paper
2017-03-28
Author(s): Akkurt, B., Akargun, H., Somers, L., Deen, N. et al.
Abstract Advanced Computational Fluid Dynamics (CFD) modeling of reacting sprays provides access to information not available even applying the most advanced experimental techniques. This is particula....
Technical Paper
2017-03-28
Author(s): Wu, M., Pei, Y., Qin, J., Li, X. et al.
Abstract Wall temperature in GDI engine is influenced by both water jacket and gas heat source. In turn, wall temperature affects evaporation and mixing characteristics of impingement spray as well as....
Journal Article
2017-03-28
Author(s): Wang, Z., Ameen, M., Som, S., and Abraham, J.
Abstract The basic idea behind large-eddy simulation (LES) is to accurately resolve the large energy-containing scales and to use subgrid-scale (SGS) models for the smaller scales. The accuracy of LES....
Technical Paper
2017-03-28
Author(s): Verma, I., Meeks, E., Bish, E., Kuntz, M. et al.
Abstract Emissions from Diesel engines have been a major concern for many years, particularly with regards to the impact of NOx and particulate matter on human health. Exhaust gas re-circulation (EGR)....
Technical Paper
2017-03-28
Author(s): Mubarak ali, M., Hernandez Perez, F., Vallinayagam, R., Vedharaj, S. et al.
Abstract Full cycle simulations of KAUST optical diesel engine were conducted in order to provide insights into the details of fuel spray, mixing, and combustion characteristics at different start of ....
Technical Paper
2017-03-28
Author(s): Wang, M., Gao, S., and Lee, C.
Abstract In this work, an efficient and unified combustion model is introduced to simulate the flame propagation, diffusion-controlled combustion, and chemically-driven ignition in both SI and CI engi....
Technical Paper
2017-03-28
Author(s): Lackmann, T., Lucchini, T., D'Errico, G., Kerstein, A. et al.
Abstract Many new combustion concepts are currently being investigated to further improve engines in terms of both efficiency and emissions. Examples include homogeneous charge compression ignition (H....
Journal Article
2017-03-28
Author(s): Addepalli, K. and Mallikarjuna, J.
Abstract Today, GDI engines are becoming very popular because of better fuel economy and low exhaust emissions. The gain in fuel economy in these engines is realized only in the stratified mode of ope....
Journal Article
2017-03-28
Author(s): Berni, F., Fontanesi, S., Cicalese, G., and D'Adamo, A.
Abstract CFD and FE tools are intensively adopted by engine manufacturers in order to prevent thermo-mechanical failures reducing time- and cost-to market. The capability to predict correctly the phys....
Technical Paper
2017-03-28
Author(s): Fraioli, V., Beatrice, C., Di Blasio, G., Belgiorno, G. et al.
Abstract The adoption of gaseous fuels for Light Duty (LD) engines is considered a promising solution to efficiently reduce greenhouse gases emissions and diversify fuels supplies, while keeping pollu....
Technical Paper
2017-03-28
Author(s): Twellmeyer, A., Kopple, F., and Weigand, B.
Abstract Compressed Natural Gas (CNG) is a promising alternative fuel for internal combustion engines as its combustion is fuel-efficient and lean in carbon dioxide compared to gasoline. The high octa....
Technical Paper
2017-03-28
Author(s): Diwakar, R. and Domenech-Llopis, V.
Abstract With the ability of modern high pressure diesel injectors to deliver accurate, closely coupled multiple pulse injections, it is possible to minimize engine combustion noise without negative e....
Technical Paper
2017-03-28
Author(s): Yu, J., Abe, M., and Sukegawa, Y.
Abstract We developed a numerical method for PFI engine, which would take complex intake-port phenomena into consideration. Numerical study for PFI engine has additional difficulty compared with that ....
Technical Paper
2017-03-28
Author(s): Kundu, P., Ameen, M., Unnikrishnan, U., and Som, S.
Abstract Modeling unsteady turbulent flame development in lifted spray flames is important as a strong correlation exists between pollutant formation and the transient flame features such as auto-igni....
Technical Paper
2017-03-28
Author(s): Karpatne, A., Breden, D., and Raja, L.
Abstract The arc breakdown phase in automotive spark-plugs is a sub-microsecond event that precedes the main spark event. This phase is typically characterized by strong non-equilibrium plasma phenome....
Technical Paper
2017-03-28
Author(s): Perini, F., Zha, K., Busch, S., and Reitz, R.
Abstract In this work, linear, non-linear and a generalized renormalization group (RNG) two-equation RANS turbulence models of the k-epsilon form were compared for the prediction of turbulent compress....
Technical Paper
2017-03-28
Author(s): Pucilowski, M., Jangi, M., Shamun, S., Li, C. et al.
Abstract Methanol as an alternative fuel in internal combustion engines has an advantage in decreasing emissions of greenhouse gases and soot. Hence, developing of a high performance internal combusti....
Technical Paper
2017-03-28
Author(s): Eder, L., Kiesling, C., Priesching, P., Pirker, G. et al.
Abstract Using natural gas as a fuel in internal combustion engines is a promising way to obtain efficient power generation with relatively low environmental impact. Dual fuel operation is especially ....
Technical Paper
2017-03-28
Author(s): Cui, L., Wang, T., Sun, K., Lu, Z. et al.
Abstract The scavenging process in two-stroke marine engines not only transports burnt gas out of the cylinder but also provides fresh air for the next cycle, thereby significantly affecting the engin....
Technical Paper
2017-03-28
Author(s): Gholamisheeri, M., Thelen, B., and Toulson, E.
Abstract Three dimensional numerical simulation of the transient turbulent jet and ignition processes of a premixed methane-air mixture of a turbulent jet ignition (TJI) system is performed using Conv....
Journal Article
2017-03-28
Author(s): Lucchini, T., D'Errico, G., Onorati, A., Frassoldati, A. et al.
Abstract Nowadays, detailed kinetics is necessary for a proper estimation of both flame structure and pollutant formation in compression ignition engines. However, large mechanisms and the need to inc....
Journal Article
2017-03-28
Author(s): Iaccarino, S., Breda, S., D'Adamo, A., Fontanesi, S. et al.
Abstract The increasing limitations in engine emissions and fuel consumption have led researchers to the need to accurately predict combustion and related events in gasoline engines. In particular, kn....
Technical Paper
2017-03-28
Author(s): Li, Y., Guo, H., and Li, H.
Abstract Computational fluid dynamics (CFD) model has been widely applied in internal combustion (IC) engine research. The integration of chemical kinetic model with CFD provides an opportunity for re....
Technical Paper
2017-03-28
Author(s): Sforza, L., Lucchini, T., Onorati, A., Zhu, X. et al.
Abstract Objective of this work is the incorporation of the flame stretch effects in an Eulerian-Lagrangian model for premixed SI combustion in order to describe ignition and flame propagation under h....
Journal Article
2017-03-28
Author(s): D'Adamo, A., Breda, S., Iaccarino, S., Berni, F. et al.
Abstract Engine knock is one of the most limiting factors for modern Spark-Ignition (SI) engines to achieve high efficiency targets. The stochastic nature of knock in SI units hinders the predictive c....
Journal Article
2017-03-28
Author(s): Pei, Y., Zhang, Y., Kumar, P., Traver, M. et al.
Abstract A computational fluid dynamics (CFD) guided combustion system optimization was conducted for a heavy-duty compression-ignition engine with a gasoline-like fuel that has an anti-knock index (A....
Technical Paper
2017-03-28
Author(s): Ko, I., D'Adamo, A., Fontanesi, S., and Min, K.
Abstract In recent years, Large-Eddy Simulation (LES) is spotlighted as an engineering tool and severe research efforts are carried out on its applicability to Internal Combustion Engines (ICEs). Howe....
Technical Paper
2017-03-28
Author(s): Kim, T. and Park, S.
Abstract An important challenge for modeling Direct-Injection Spark-Ignition (DISI) gasoline engines is understanding flash boiling spray. Flash boiling occurs when the ambient pressure is lower than ....
Technical Paper
2017-03-28
Author(s): Petranovic, Z., Edelbauer, W., Vujanović, M., Priesching, P. et al.
Abstract Commonly, the spray process in Direct Injection (DI) diesel engines is modeled with the Euler Lagrangian discrete droplet approach which has limited validity in the dense spray region, close ....
Journal Article
2017-03-28
Author(s): Breda, S., D'Adamo, A., Fontanesi, S., D'Orrico, F. et al.
Abstract Conventional fossil fuels are more and more regulated in terms of both engine-out emissions and fuel consumption. Moreover, oil price and political instabilities in oil-producer countries are....
Viewing 1 to 35 of 35