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2016-04-04 ...
  • April 4-8, 2016 (3 Sessions) - Live Online
Training / Education Online Web Seminars
Lean burn engines (diesel and GDI) boast higher fuel economy and cleaner emissions than conventionally tuned engines while producing equivalent power. They employ higher combustion chamber compression ratios, significant air intake swirl and precise lean-metered direct fuel injection. The downfall of lean-burn technology, however, is increased exhaust NOx emissions (due to higher heat and cylinder pressure) and a somewhat narrower RPM power-band (due to slower burn rates of lean mixtures). Removal of NOx from exhausts is a critical need for emission standards and ambient ozone requirements.
2015-11-04
Event
High Efficiency Combustion Systems With the increased demands for fuel efficiency and fuel economy, the internal combustion engine (ICE) continues to be examined for design enhancements to improve these measures. Overall, the program will examine several technological advances required to maximize efficiency, including: o Advanced, low-temperature combustion techniques o Improved understanding and modeling of heat loss mechanisms o Electrification and intelligent control of accessory loads o Possible redesign of mechanical systems (e.g., variable stroke for fully expanded cycles) o High-efficiency turbo-machinery to extract exhaust energy and provide boost Emissions Reduction With a greater than 10 percent growth expected in the domestic passenger vehicle market, China now has the world’s largest auto market; and emissions from transportation are growing rapidly as well.
2015-11-04
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2015-11-04
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2015-11-04
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2015-11-04
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2015-11-04
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The internal combustion engine has great potential for high fuel efficiency. The ideal otto and diesel cycles can easily achieve more than 70% thermodynamic efficiency. The problems come when those cycles should be implemented in a real engine. Extreme peak pressure during the cycle will call for a very robust engine structure that in turn will increase friction and hence reduce mechanical efficiency. A very high compression ratio also increase the surface to volume ratio and promote heat losses, taking away much of the benefits from the theoretical cycle. The presentation will start with a standard SI engine and it’s efficiency as a function of load. Then a high compression ratio SI with be introduced and compared with the same engine operated in HCCI mode. The four efficiencies of SI as well as HCCI will be discussed and variations like HCCI with negative valve overlap and higher mean piston speed will be shown. A next step is the results with Partially Premixed Combustion.
2015-11-04
Event
From their origins in meeting emissions and fuel economy standards, embedded control systems are now proliferating across other areas such as improved safety, comfort and convenience, connectivity, and much more. To address the consequent increase in system and software complexity, automotive industry is using Model-Based Design to design, analyze and implement the software in product development. Now, we are ushering in a new era of transformation where automotive and consumer technologies are merging and the availability of low-cost sensing, computing, and control technologies is allowing the automotive industry to create new products and lines of business. This presentation will start off with current trends in Model-Based Design application for product development, then discuss how sensing, computing, and control are impacting the automotive industry, and how model-based methods can enable you to realize the new opportunities generated by this transformation.
2015-11-04
Event
Demand for fuel efficiency and fuel economy constantly increases world-wide. Internal combustion engines and fuels represent an integrated system, continuously examined for enhancements to improve these measures. Fuel ethers are blending components used precisely to enhance performance and provide cleaner, more sustainable gasoline. As clean replacements for toxic compounds, and enablers of improved air quality through a reduction of vehicle emissions of exhaust pollutants like VOCs and PM, fuel ethers enable a global path towards more sustainable, clean, efficient, and affordable mobility. . Thanks to their naturally high octane numbers they also contribute to economies of fuel, enhancing efficient combustion of petrol, while not causing engine damage or corrosion of parts and enabling the transition to higher compression ratio, more efficient engines.
2015-10-21 ...
  • October 21-23, 2015 (8:30 a.m. - 4:30 p.m.) - Troy, Michigan
  • July 18-20, 2016 (8:30 a.m. - 4:30 p.m.) - Troy, Michigan
  • November 16-18, 2016 (8:30 a.m. - 4:30 p.m.) - Tysons, Virginia
Training / Education Classroom Seminars
On-board diagnosis of engine and transmission systems has been mandated by government regulation for light and medium vehicles since the 1996 model year. The regulations specify many of the detailed features that on-board diagnostics must exhibit. In addition, the penalties for not meeting the requirements or providing in-field remedies can be very expensive. This course is designed to provide a fundamental understanding of how and why OBD systems function and the technical features that a diagnostic should have in order to ensure compliant and successful implementation.
2015-10-19 ...
  • October 19-20, 2015 (8:30 a.m. - 4:30 p.m.) - Troy, Michigan
  • March 14-15, 2016 (8:30 a.m. - 4:30 p.m.) - Troy, Michigan
Training / Education Classroom Seminars
Stringent requirements of reduced NOx emission limits in the US have presented engineers and technical staff with numerous challenges. Several in-cylinder technical solutions have been developed for diesel engines to meet 2010 emission standards. These technologies have been optimized and have yielded impressive engine-out results in their ability to reduce emissions to extremely low levels. However, current and state-of-the-art in-cylinder solutions have fallen short of achieving the limits imposed on diesel emissions for 2010.
2015-10-06
Event
This session discusses technologies that treat engine exhaust emissions to meet commercial vehicle requirements. The scope covers developments in catalysts, materials, controls, and integration with the complete engine/vehicle system.
2015-10-06
Event
This session explores total vehicle and powertrain technologies for on and off-road commercial vehicles aimed at reduction of CO2 emissions through design, analysis, and testing techniques. The topics may include energy analysis/management/optimization, current and proposed emission legislation, certification techniques, powertrain integration, weight reduction, idle reduction, and friction/parasitic reduction.
2015-09-30 ...
  • September 30-October 1, 2015 (8:30 a.m. - 4:30 p.m.) - Troy, Michigan
  • April 14-15, 2016 (8:30 a.m. - 4:30 p.m.) - Detroit, Michigan
Training / Education Classroom Seminars
As diesel emissions regulations have become more and more stringent, diesel particulate filters (DPF) have become possibly the most important and complex diesel aftertreatment device. This seminar covers many DPF-related topics using fundamentals from various branches of applied sciences such as porous media, filtration and materials sciences and will provide the student with both a theoretical as well as an applications-oriented approach to enhance the design and reliability of aftertreatment platforms.
2015-09-29
Technical Paper
2015-01-2814
Rakhesh Bharathan
Simultaneous reduction of NOx and PM from engine exhaust of a diesel engine is an interesting area of research due to the implementation of stringent emission regulations all over the world. Cost involved in expensive after treatment systems such as DPF and SCR necessitate minimization of engine out pollutants. With minimum engine out emission achieved through engine hardware and combustion parameter optimization, possibility of elimination or downsizing of the after treatment system can be explored. The paper presents the effect of fuel injection parameters and EGR rate on exhaust emission of a boosted diesel engine. Effects of parameters such as rail pressure, pilot-post injections, SOI, EGR rate and EGR temperature on a 4 cylinder two valve direct injection diesel engine is studied. Present study reveals the possibility of elimination of after treatment systems at BS IV level with optimization of engine hardware and combustion parameters.
2015-09-29
Technical Paper
2015-01-2889
Saravana Venkatesh R, Sunil Pandey, Sathyanandan Mahadevan
In heavy duty diesel engines, Exhaust Gas Recirculation (EGR) is often preferred choice to contain NOx emissions. Critical to such EGR fitted engines is the design of air intake pipe and intake manifold combination in view of proper EGR gas mixing with intake air. The variation in EGR mass fraction at each intake ports should be as minimal as possible and this variation must be contained within +/- 10% band to have a minimal cylinder to cylinder variation of pollutants. EGR homogeneity for various intake configurations were studied using 3D CFD for a 4 cylinder 3.8 L diesel fuel, common rail system, turbocharged and intercooled heavy duty engine. Flow field was studied in the computational domain from the point before EGR mixing till all the four intake ports. EGR mass fraction variation at each intake port was calculated from this analysis after carrying out an experimental validation of the CFD model.
2015-09-29
Technical Paper
2015-01-2794
Meng-Huang Lu, Figen Lacin, Daniel McAninch, Frank Yang
The diesel exhaust aftertreatment using injection, such as urea – SCR and lean NOx trap systems, could effectively reduce the emission NOx level, and has been commonly used in various industrial applications. The performance of the injector is crucial for successfully utilizing this type of technology, and simulation tools are playing an important role in virtual design, which could evaluate performance and optimize the design. The virtual test methodology using CFD that is able to capture the fluid dynamics of injector internal nozzle flow has been developed to sever for this purpose to quantify the water or urea dosing rate of the test injector, and the computational results were validated with the test data measured in the Tenneco Injector Flow Lab. Later, the capability of the virtual test methodology was extended to quantify the spray angle of the test injector with test fluid of water or urea.
2015-09-22
Event
This session is dedicated to topics related to aircraft emissions affecting local air quality and climate change. In addition, papers dealing with FAA/EASA or airport emissions regulations may also be presented.
2015-09-14 ...
  • September 14, 2015 (8:30 a.m. - 4:30 p.m.) - Indianapolis, Indiana
  • April 11, 2016 (8:30 a.m. - 4:30 p.m.) - Detroit, Michigan
  • September 12, 2016 (8:30 a.m. - 4:30 p.m.) - Indianapolis, Indiana
Training / Education Classroom Seminars
The September offering of this seminar is held in conjunction with the SAE 2015 On-Board Diagnostics Symposium. Register for this offering and you can register to attend the SAE 2015 On-Board Diagnostics Symposium for 25% off the classic member event rate. Please contact our Customer Service department at +1.877.606.7323 (U.S. and Canada only) or +1.724.776.4970 (outside U.S. and Canada) to register for SAE 2015 On-Board Diagnostics Symposium at this special rate. On-board diagnostics, required by governmental regulations, provide a means for reducing harmful pollutants into the environment.
2015-09-06
Journal Article
2015-24-2389
Mirko Baratta, Roberto Finesso, Daniela Misul, Ezio Spessa
The potential of internal EGR (iEGR) and external EGR (eEGR) in reducing the engine-out NOx emissions in a heavy-duty diesel engine has been investigated by means of a refined 1D fluid-dynamic engine model developed in the GT-Power environment. The engine is equipped with Variable Valve Actuation (VVA) and Variable Geometry Turbocharger (VGT) systems. The activity was carried out in the frame of the CORE (CO2 Reduction for Long Distance Transport) Collaborative Project of the European Community, VII FP. The engine model integrates an innovative 0D predictive combustion model for the simulation of the HRR (heat release rate), which is based on the accumulated fuel mass approach, and a multi-zone thermodynamic model for the simulation of the in-cylinder temperatures. NOx emissions are calculated by means of the Zeldovich thermal and prompt mechanisms.
2015-09-06
Technical Paper
2015-24-2521
José Ramón Serrano, Pedro Piqueras, Emanuele Angiolini, Cesare Meano, Joaquín De La Morena
The abatement of nitrogen oxides emissions is a topic of major concern for automotive manufacturers. In addition to aftertreatment solutions such as LNT or SCR devices, the use of exhaust gas recirculation (EGR) is necessary in most of the applications to meet emissions regulations. Due to the high specific humidity of the exhaust gases, a high condensate flow may be generated if EGR gases are significantly cooled down. In the case of long-route EGR (LR-EGR) usage, this condensate flow would reach the compressor wheel. This paper explores the variables governing the condensation process and the potential effects of the liquid droplets and streams on the compressor wheel durability combining experimental and theoretical approach. For this purpose, visualization of both the condensate flow and the compressor wheel are performed. Tests are conducted in a flow test rig in which LR-EGR water content is reproduced by water injection on the hot air mass flow.
2015-09-06
Technical Paper
2015-24-2531
Marco Leonetti, Michael Bargende, Martin Kreschel, Christoph Meier, Horst Schulze
Due to the demands for today’s passenger cars regarding fuel consumption and emissions, exhaust turbo charging has become a fundamental step in achieving these goals. Especially in upper and middle class vehicles it is also necessary to consider the noise comfort. Today, floating bushings are mainly used as radial bearings in turbochargers. In the conventional operating range of the turbocharger dynamic instability occurs in the lubrication films of the bearings. This instability is transferred by structure-borne noise into audible airborne sound and known as constant tone phenomenon. This phenomenon is not the major contributor of the engine noise but its tonal character is very unpleasant. In order to gain a more detailed understanding about the origin of this phenomenon, displacement sensors have been applied to the compressor- and the turbine-side of the rotor, to be able to determine the displacement path.
2015-09-06
Technical Paper
2015-24-2448
Mengqin Shen, Vilhelm Malmborg, Yann Gallo, Bjorn B. O. Waldheim, Patrik Nilsson, Axel Eriksson, Joakim Pagels, Oivind Andersson, Bengt Johansson
The conventional diesel combustion offers high thermal efficiencies along with elevated emissions of oxides of nitrogen (NOx). Exhaust gas recirculation (EGR) is one of the possible ways that help to reduce NOx emissions but can generally result in higher engine-out soot emissions. To better understand the knowledge about particle formation and emission, an insight in the cylinder is necessary. In this work, characteristics of soot particles from in-cylinder gas in a heavy duty engine for low temperature combustion (LTC) compared with conventional combustion were investigated. By using a fast gas sampling valve, gas samples from the cylinder were taken as a function of crank angle and analyzed regarding the black carbon mass, soot particle size distribution and particle numbers. Black carbon mass was measured with an aethalometer and the particle size distribution and particle number were measured by a Scanning Mobility Particle Sizer (SMPS). Three levels of EGR were applied.
2015-09-06
Journal Article
2015-24-2426
Roberto Finesso, Ezio Spessa, Mattia Venditti, Yixin Yang
Abstract New methodologies have been developed to optimize EGR rate and injection timing in diesel engines, with the aim of minimizing fuel consumption (FC) and NOx engine-out emissions. The approach entails the application of a recently developed control-oriented engine model, which includes the simulation of the heat release rate, of the in-cylinder pressure and brake torque, as well as of the NOx emission levels. The engine model was coupled with a C-class vehicle model, in order to derive the engine speed and torque demand for several driving cycles, including the NEDC, FTP, AUDC, ARDC and AMDC. The optimization process was based on the minimization of a target function, which takes into account FC and NOx emission levels. The selected control variables of the problem are the injection timing of the main pulse and the position of the EGR valve, which have been considered as the most influential engine parameters on both fuel consumption and NOx emissions.
2015-09-06
Technical Paper
2015-24-2514
Marco Piumetti, Samir Bensaid, Nunzio Russo
A set of ceria-zirconia nanocatalysts with different Zr-contents and structural properties was prepared to study the effect of both the Zr-amount and surface-dependent activity towards soot combustion in “loose” and “tight” soot-catalyst contact. The properties of the catalysts were examined using several physico-chemical techniques. The best soot oxidation activities were achieved for the Ce0.9Zr0.1O2-NP catalyst (NP means nano-polyhedra and 0.9 indicates the atomic ratio of Ce/Ce+Zr), due to its easier reducibility, compared to high-surface area catalysts with the same Ce/Zr ratio. Moreover, better performances were reached for Ce0.9Zr0.1O2-NP, than similar nano-polyhedra with higher Zr-amounts (denoted as CexZr1-xO2-NP, where x = 0.8 or 0.7). On the other hand, worse activities were obtained for both mesoporous and microporous catalysts with the same Ce/Zr ratio.
2015-09-06
Technical Paper
2015-24-2501
Thomas Laible, Stefan Pischinger, Bastian Holderbaum
Abstract Within a project of the Research Association for Combustion Engines e.V., different measures for rising the temperature of exhaust gas aftertreatment components of both a passenger car and an industrial/commercial vehicle engine were investigated on a test bench as well as in simulation. With the passenger car diesel engine and different catalyst configurations, the potential of internal and external heating measures was evaluated. The configuration consisting of a NOx storage catalyst (NSC) and a diesel particulate filter (DPF) illustrates the potential of an electrically heated NSC. The exhaust aftertreatment system consisting of a diesel oxidation catalyst (DOC) and a DPF shows in simulation how variable valve timing in combination with electric heated DOC can be used to increase the exhaust gas temperature and thus fulfill the EU6 emission limits.
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