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Viewing 1 to 30 of 9386
2017-04-04
Event
Technical presentation, review and investigation focusing on China market, including powertrain technology roadmap, regulation review, product development and localization, off road applications, new technology evaluation etc, covering both conventional and alternative powertrain and other vehicular component and system aspects.
2017-04-04
Event
This session considers modeling (zero-D, 1D, 2D, 3D CFD) and experimental papers on: combustion chamber, systems (lubrication, cooling, fuel, EGR); components (oil pumps, coolant pump, fuel injectors, compressors, turbines, turbochargers, torque converters, gear box, fans, bearings, valves, ports, manifolds, turbine housing); heat exchangers (radiators, oil coolers); aftertreatment (SCR, DOC, DOF, exhaust gas cooling); battery cooling (HEV, EV, motor/generator) and controls (passive and active).
2017-04-04
Event
This session covers topics regarding new CI and SI engines and components. This includes analytical, experimental, and computational studies covering hardware development as well as design and analysis techniques.
2017-04-04
Event
Classical SI combustion characterized by ignition by an external energy source that serves to control combustion phasing and a combustion rate that is determined by flame propagation. The scope of topics includes efficiency, emissions, knock, preignition, direct injection, ignition strategies, and fuel / additive effects. Papers describing experimental or applied simulation results are invited and will be placed in appropriate sub-sessions. Papers with an emphasis on the modeling aspects of combustion are encouraged to be submitted into PFL110 or PFL120 modeling sessions.
2017-04-04
Event
This session includes four papers related to spark-ignition engines and their fuels and five papers related to the processes of compression ignition combustion of different fuels.
2017-04-04
Event
This session focuses on both SI and CI combustion and mixture preparation during cold start and transient engine operation. Example topics include engine performance, emissions, control strategies and calibrations for cold start and transient operation impact on NOx, PM, HC, CO, and CO2 emissions; also including the impact of variable valve timing, spark, and turbocharger controls.
2017-04-04
Event
This session sets out to reflect the recent advances on the research, development and practices of Powertrain NVH treatment. The technical papers are of interest to powertrain system designers, testing specialists, NVH experts, and other individuals who evaluate and develop technologies to control powertrain NVH. The coverage includes: engine, engine subsystem and components noise and vibration; powertrain systems noise measurement and instrumentation; powertrain systems noise analysis.
2017-04-04
Event
This session focuses on fuel injection, combustion, controls, performance and emissions of SI engines fueled with gaseous fuels such as methane, natural gas (NG), biogas, producer gas, coke oven gas, hydrogen, or hydrogen-NG blends. Papers on Diesel-NG or diesel-hydrogen dual-fuel engines will also be accepted in this session.
2017-04-04
Event
Separate sub-sessions cover zero-dimensional, one-dimensional, and quasi-dimensional models for simulation of SI and CI engines with respect to: engine breathing, boosting, and acoustics; SI combustion and emissions; CI combustion and emissions; fundamentals of engine thermodynamics; numerical modeling of gas dynamics; thermal management; mechanical and lubrication systems; system level models for controls; system level models for vehicle fuel economy and emissions predictions.
2017-04-04
Event
The session covers advances in the development and application of models and tools involved in multi-dimensional engine modeling: advances in chemical kinetics, combustion and spray modeling, turbulence, heat transfer, mesh generation, and approaches targeting improved computational efficiency. Papers employing multi-dimensional modeling to gain a deeper understanding of processes related to turbulent transport, transient phenomena, and chemically reacting, two-phase flows are also encouraged.
2017-04-04
Event
Papers are invited for this session on the general topics of combustion engine gaseous emissions (regulated and non-regulated). This includes papers discussing well-to-wheels CO2 production for alternative technologies, fuel economy and all greenhouse gas emission research with their primary focus on engine, emissions, fuels, control or related components or sub-components within. It also includes hydrocarbon species and specific NOx species production over aftertreatment devices as a result of changes in fuel specification and the inclusion of bio-derived components and consideration of secondary emissions production (slip) as a result of aftertreatment. (Papers focusing on vehicle-system approach on fuel economy should be directed to PFL370.)
2016-11-15
Event
This session contains manuscripts focused on two-stroke engines. Topics such as emissions, performance, and efficiency will be explored. Advanced combustion control, direct fuel injection, simulation models and experimental results will be presented.
2016-11-15
Event
This session contains manuscripts focused on two-stroke engines. Topics such as emissions, performance, and efficiency will be explored. Advanced combustion control, direct fuel injection, simulation models and experimental results will be presented.
2016-11-08
Technical Paper
2016-32-0050
Francesco Testa, Vincenzo Gagliardi, Marco Ferrari, Stefano Fontanesi, Andrea Bertani
It is well known that 3D CFD simulation can give detailed information about fluid and flow properties in complex 3D domains and that1D CFD simulation can give important information at a system level, i.e. about the performance of the entire engine. The drawbacks of the two simulation methods are that the former requires high computational cost while the latter is not able to capture complex local 3D features of the flow. Therefore, the two simulation methods are to be seen as complementary, indeed a coupling of the two approaches can benefit from the pros of the two methods while minimizing the cons. In particular, with a multi-scale modeling approach (1D-3D) it is possible to simulate large and complex domains by modeling the complex part with a 3D approach and the rest of the domain with 1D approach.
2016-11-08
Technical Paper
2016-32-0046
Stephan Schneider, Marco Chiodi, Horst Friedrich, Michael Bargende
The proposed paper deals with the development process and initial measurement results of an opposed piston engine for the use in a Free Piston Linear Generator (FPLG). The FPLG, which is being developed at the German Aerospace Center (DLR), is an innovative internal combustion engine for the generation of electrical power. With its arrangement, the piston freely oscillates between the compression chamber of the combustion unit and a gas spring with no mechanical coupling like a crank shaft. A linear alternator converts the kinetic energy of the moving piston into electric energy. The virtual development of the novel combustion system is divided into two stages: One the one hand, the combustion system including e.g. a cylinder liner, pistons, cooling and lubrication concepts has to be developed.
2016-11-08
Technical Paper
2016-32-0047
Xinyan Wang, Jun Ma, Hua Zhao
In this study, a 2-stroke Boosted Uniflow Scavenged Direct Injection Gasoline (BUSDIG) engine was proposed and researched to achieve aggressive engine downsizing and downspeeding. Compared to the loop or cross scavenged 2-stroke engines, the BUSDIG engine can achieve excellent scavenging performance and be operated with higher boost pressure as well as the absence of air and fuel short-circuiting. As a fundamental engine geometric parameter, the bore/stroke (B/S) ratio would directly affect the scavenging process in the uniflow scavenged 2-stroke engine. In this paper, the three dimensional (3D) computational fluid dynamics (CFD) simulations were applied to investigate the scavenging process in the BUSDIG engine with different bore/stroke (B/S) ratios. Four bore and stroke (B/S) ratios of 0.66, 0.8, 1 and 1.3 were analyzed.
2016-11-08
Technical Paper
2016-32-0045
Joseph K. Ausserer, Marc D. Polanka, Paul Litke, Jacob Baranski
Small remotely piloted aircraft (20-55 lbs) powered by internal combustion engines typically operate on motor gasoline, which has an anti-knock index (AKI) greater than 80. In order to comply with the single battlefield fuel initiative in DoD Directive 4140.25, there is an increasing interest in converting the 1 10 kW power plants in the aforementioned size class to run on lower AKI fuels such as Diesel and JP-8, which have AKIs of approximately 20. It has been speculated that the higher losses (short circuiting, incomplete combustion, heat transfer) that cause these engines to have lower efficiencies than their conventional scale counterparts may also relax the fuel AKI requirements of the engines. To investigate that supposition, the fuel AKI requirement of a 3W-55i engine (a larger variant of the engine used on the Scan Eagle) was mapped and compared to operation of the engine on the manufacturer recommended 98 ON fuel.
2016-11-08
Technical Paper
2016-32-0038
He Changming, Xu Sichuan
Current lightweight IC engine has potentials to further decrease CO2 emissions and improve fuel economy due to less friction losses. Small and compact IC engines with higher power density have been developed in order to achieve these downsizing targets for recent years. Here an innovative opposed-piston diesel engine in two-stroke mode was built, which with upgraded power performance and thermal efficiency advantages, as well as almost equivalent fuel consumption and pollutant emissions as compared to conventional four-stroke diesel engines. But the exhaust manifold of this engine will be subjected to thermo-mechanical fatigue from higher thermal loads. The maximum exhaust gas temperature is also elevated that may cause cracking on exhaust manifold. At design initial stage, compared with physical prototypes, a series of virtual model verifications with modern analytic tools seems to be more feasible and reasonable, in consideration of relatively high costs and time saving.
2016-11-08
Technical Paper
2016-32-0049
Kuniyoshi Eto, Masaru Nozawa, Masato Nara, Buhei Kobayashi, Daiki Shibasaki, Ken Shirai
A new air-cooled SI two-stroke gasoline engine has been developed for an arborist-chainsaw. This engine has a displacement of 25 cc and generates about 1.1 kW and complies with the latest CARB and EPA exhaust regulations by optimizing scavenging flows and the use of a catalytic converter. Characteristics of lightweight, compact and high power-to-weight ratio are required for handheld chainsaws, especially for arborist chainsaws. As a matter of course, these characteristics are needed for engine itself in order to satisfy such market requirements for hand-held power equipment. To realize lightweight and compact design, the placement of catalytic converter is optimized for the engine and a two-piece crankshaft is adopted.
2016-11-08
Technical Paper
2016-32-0048
Garrett Parker, Stuart Bartley, Michael Nicholls
Two-cycle engine clean-up data is being presented to demonstrate the deposit removal capabilities of a premium fuel additive. In this testing, the fuel additive was added as a top-treatment to the 50:1 blended fuel-oil mixture. Engine testing was conducted on an Echo SRM-265 (26.4 cc) string trimmer run using a standardized test cycle and conditions. Test measurements included piston deposits, ring stick, and exhaust port blockage. To gain the most complete data set several variables were investigated including: 2 different base gasoline fuels, ethanol level (E0 and E10), additive dose (none, low, and high), and fuel stabilizer dose (none and high). Post clean-up test data shows a high level of deposits are removed helping to restore the engine to its original performance.
2016-11-08
Technical Paper
2016-32-0073
Sendilvelan Subramanian, Mahadevan Ganesan PhD
Control of harmful emissions during cold start of the engine has become a challenging task over the years due to the ever increasing stringent emission norms. Positioning the catalytic converter closer to the exhaust manifold is an efficient way of achieving rapid light-off temperature. On the other hand, the resulting higher thermal loading under high- load engine operation may substantially cause thermal degradation and accelerate catalyst ageing. The objective of the present work is to reduce the light-off time of the catalyst and at the same time reduce the thermal degradation and ageing of the catalyst to the minimum possible extent by adopting an approach with Telescopic Catalytic Converter System (TCCS) . The emission tests were conducted at the cold start of a 4 cylinder spark ignition engine with TCCS at different positions of the catalyst at no load conditions.
2016-10-27
Event
This session focuses on fuel injection, combustion, controls, performance and emissions of SI engines fueled with gaseous fuels such as methane, natural gas (NG), biogas, producer gas, coke oven gas, hydrogen, or hydrogen-NG blends. Papers on Diesel-NG or diesel-hydrogen dual-fuel engines will also be accepted in this session.
2016-10-26
Event
This session covers topics regarding new CI and SI engines and components. This includes analytical, experimental, and computational studies covering hardware development as well as design and analysis techniques.
2016-10-26
Event
This session covers the Power Cylinder: piston, piston rings, piston pins, and connecting rods. The papers include information on reducing friction and increasing fuel economy, improving durability by understanding wear, and decreasing oil consumption and blow-by.
2016-10-26
Event
Mixed mode with auto ignition but inhomogeneous charge. Injection-controlled but with EOI before SOC. Papers describing experiments and test data, simulation results focused on applications, fuel/additive effects, combustion control, and PPC injection strategies are invited and will be placed in appropriate sub-sessions. Papers with an emphasis on the modeling aspects of combustion are encouraged to be submitted into FFL110 or FFL120 modeling sessions.
2016-10-26 ...
  • October 26-28, 2016 (8:30 a.m. - 4:30 p.m.) - Baltimore, Maryland
Training / Education Classroom Seminars
Public awareness regarding pollutants and their adverse health effects has created an urgent need for engineers to better understand the combustion process as well as the pollutants formed as by-products of that process. To effectively contribute to emission control strategies and design and develop emission control systems and components, a good understanding of the physical and mathematical principles of the combustion process is necessary. This seminar will bring issues related to combustion and emissions "down to earth," relying less on mathematical terms and more on physical explanations and analogies.
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