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Book

Biofuels: Illusion or Reality?

2008-09-01
Environmental issues, rising prices and security of supply are putting energy at the center of all attention. Policymakers pushed by various stakeholders are struggling to find more sustainable solutions to the world’s legitimate demand for energy. The transport sector is especially under pressure as it relies up to 98% on oil. Despite vast research and development investments, no short-term solutions appeared to be reliable. Thanks to lawmakers’ support to biofuels, these substitutes for oil are now seen as the potential solution for a sustainable future in less polluting transportation alternatives. This book analyses the real possibility of biofuels in Europe. Does the region have enough land to produce the needed feedstock? What are the real gains in terms of greenhouse gases emissions and energy efficiency? Are biofuels really a sustainable solution? Will this policy succeed? Are the targets reachable?
Software

SAE Emissions Technology Collection

1998-02-04
Thank you for your interest in the SAE Emissions Technology Collection. This demo gives you an overview of the functionality of the product, illustrating the search interaction and the navigational features. You'll want to try a few searches so you can become familiar with the look and feel of the product and the navigational tools it offers. Please note: this demo does NOT provide you with the content of the product. It contains only one document to show you how you can link from the document summary to the full-text PDF. For information on the content of the product, please see the SAE website. You will be asked to login to the SAE Website before accessing the demo. This will require you to register as a new user if you do not already have an SAE Website account. Click on the following link to access the demo: If you have any questions, please e-mail CustomerService@sae.org or call 1-724-776-4970.
Book

Introduction to Dynamics of Rotor-Bearing Systems

2001-01-01
This book is written as an introduction to rotor-bearing dynamics for practicing engineers and students who are involved in rotor dynamics and bearing designs. The goal is to provide a step-by-step approach to the understanding of fundamentals of rotor-bearing dynamics. Therefore, the emphasis is on the basic principles, phenomena, modeling, theory, and interpretations of the results. Introduction to Dynamics of Rotor-bearing Systems includes numerous examples, from a single-degree-of-freedom system to complicated industrial rotating machinery, which serve to illustrate fundamental dynamic behaviors. The concepts in the text are reinforced by parametric studies and numerous illustrative examples and figures.
Collection

Advances in Catalyst Substrates, 2018

2018-04-03
Papers included in this collection cover the systems engineering experience required to achieve ultra-low emission levels on gasoline light-duty vehicles. Emission system component topics include the development of advanced three-way catalysts, the development of NOX control strategies for gasoline lean burn engines, the application of high cell density substrates to advanced emission systems, and the integration of these components into full vehicle emission systems.
Collection

Vehicle Aerodynamics, 2018

2018-04-03
Vehicle aerodynamic development, drag reduction and fuel economy, handling and stability, cooling flows, surface soiling and water management, vehicle internal environment, tyre aerodynamics and modelling, aeroacoustics, structural response to aerodynamic loading, simulating the on-road environment, onset flow turbulence, unsteady aerodynamics, fundamental flow structures, new test methods and facilities, new applications of computational fluid dynamics simulation, competition vehicle aerodynamics.
Collection

Advances in NOx Reduction Technology, 2015

2015-04-14
This technical paper collection will focus on ‘Advances in NOx Reduction Technology’. The topics covered will include: new materials for lean NOx traps (LNT) and Selective Catalytic Reduction (SCR); system integration and durability; advances in NOx catalyst substrates, novel reductants and mixing designs.
Book

Insight: Fuel Effiency: Fuel Economy Testing (DVD)

2015-04-15
"Spotlight on Design: Insight" features an in-depth look at the latest technology breakthroughs impacting mobility. Viewers are virtually taken to labs and research centers to learn how design engineers are enhancing product performance/reliability, reducing cost, improving quality, safety or environmental impact, and achieving regulatory compliance. As global concerns about the negative consequences of greenhouse gases on the environment increase, regulatory agencies around the world are taking serious steps to address the issue of tailpipe emissions In the episode "Fuel Efficiency: Fuel Economy Testing" (12:01), engineers at the EPA’s National Vehicle and Fuel Emissions Laboratory demonstrate how different vehicles are tested for emissions, and AVL’s technical team shows how accurate tailpipe emissions can be measured and reported.
Collection

Multi-Dimensional Engine Modeling, 2017

2017-03-28
This collection 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 included in this collection.
Collection

Emission Measurement and Testing, 2014

2014-04-01
This technical paper collection covers emissions measuring techniques and testing regimes including new analysis techniques and the novel application of existing techniques, the comparison of existing and proposed testing regimes with real world experience, including modeling.
Technical Paper

The Modeling of Mold Filling in Structural Reaction Injection Molding

1996-04-01
91A118
The main use of FRC in automobiles, with the exception of a few specialized low volume vehicles, has been until now in semistructural parts. One of the most promising process in development today, that may play major role in future structural composite fabrication, is based on SRIM technology. The rapid and extensive introduction of this process goes also through the development of deeper theoretical knowledge of the process and the development of computer simulation to aid mold design and choice of proper processing parameters. To contribute SRIM advancement, a preliminary model has been developed for viscosity changes, extent of the reaction and temperature rises, associated with the mold filling stage, as well as a simple software to evaluate the pressure drop through different combinations of reinforcements.
Technical Paper

Integration and Validation of Sheet Metal Forming Simulation Computer Programs Into the Design Process

1996-04-01
91A121
In order to improve the design of drawn parts and to reduce the number of trial and error tests, Renault has undertaken the development and the validation of various finite element procedures and codes. This paper describes the function of each software and its level of integration into the design process. One of them is already an operational tool used be planners whilst the others are still in the validation phase. Selected examples show typical applications of the computer programs on automotive parts.
Technical Paper

Particulate Reinforced Aluminum Matrix Composites Obtained By Indirect Squeeze-Casting

1996-04-01
91A115
Indirect squeeze casting technology is one of the most attractive fabrication techniques of near net shape components constituted by aluminum matrix composite (AMC) materials. AMCs reinforced with both continuous and discontinuous ceramic elements have been mainly produced by infiltration of porous preforms. Nevertheless, a further promising production route offered by this technique is given by the possibility to employ ingots of pre-reinforced aluminum alloys containing ceramic particles (silicon carbide or alumina); ingots are remelted and, under suitable operative conditions, high quality composite castings of simple and complex shape are produced by squeeze casting. The present paper describes the results of an extensive experimental work carried out by Alures-Centro Tecnico Porcessi on a pilot plant scale employing a vertical squeeze casting machine with a clamping force of 315 tons.
Technical Paper

Critical Compression Loads on Aluminum Honeycomb Panels

1996-04-01
91A131
The purely theoretical evaluation of critical compression loads seems complex and not very reliable in the case of honeycomb panels, on account of the numerous parameters in play and their complex interrelationships. This report provides the designer with a fast tool for preliminary calculations, consisting of a finite-element mathematical model with elastic-linear code (which can be processed using a PC), which makes it possible to obtain information very closely resembling the real situation.
Technical Paper

Thermomechanical Behavior and Wear Resistance of Whisker Or Particle Reinforced Ceramics

1996-04-01
91A107
Ceramic composite materials have been intensively studied during the last years. Particles and whisker reinforcement have shown the simultaneous advantage to allow the preparation of composite materials by conventional processing and to lead, when under optimum conditions, to dramatic toughening and strengthening. Since wear resistance of brittle material have been shown to be related to both hardness and toughness, composite materials with improved were resistance have been developed for cutting tools or bearing applications. However the mechanism responsible for toughening is of major important for wear resistance effectiveness. We have therefore reviewed the main mechanisms before presenting some examples of composites materials for wear resistance applications.
Technical Paper

Reliability Improvement of Automotive Components By Surface Modification

1996-04-01
91A104
In this paper, several detailed studies on the surface properties of coatings are explained in order to make function of surface modification become more effective. As surface coatings, eletroless nickel plating, organic thin film, nitriding and antireflection coating by ultra fine particles are examined. Discussion of optimum production conditions and surface conditions for each coating is introduced.
Technical Paper

Finite Modeling of Sheet Stamping Operations

1996-04-01
91A089
A wide variety of choices confront the potential user of finite element modeling (FEM) for sheet forming analysis. In the first part of this paper, a brief summary of the basic formulations available and sample references to them are provided. Several kinds of finite element models have been developed for analyzing sheet forming operations at OSU and in the Center for Net Shape Manufacturing. These variations began with in-plane FEM and grew into 3-D versions. In the second part of this paper, some key conclusions from these developments will be summarized. More recently, a section analysis program (SHEET-S) has been prepared and transferred to industry. The capabilities and limitations of SHEET-S will be presented in greater detail, including comparisons with experiments and industrial trials.
Technical Paper

Trends and Forecasts for Turbocharging

1988-03-01
871147
Predictable and unpredictable forces will change the direction of the charge-air systems industry. The driver of diesel engine development will be the stringent emissions regulations of the 1990s. The drivers in the gasoline engine market will be improved fuel economy, performance, durability and emissions. Forces will also influence the charge-air marketplace, including changes in emission standards, national fiscal policies, political issues, fuel prices, alternate fuels and consumer tastes. The world community mandate for engines that are clean, quiet, durable and fuel efficient will be satisfied, increasingly, by first-tier component suppliers developing integrated systems solutions.
Technical Paper

U.S. and California Vehicle Emissions Control Programs Effectiveness and Application of Experience

1988-03-01
871148
Many areas of the world are in various stages of development which frequently includes a rapid increase in the motor vehicle population. As a result, some areas are beginning to show the effect of increased motor vehicle use on air pollution. The vehicle's contribution to California's air pollution has long been recognized and studied, and measures have been implemented to reduce emissions from motor vehicles. The history of light duty vehicle emission control in the South Coast Air Basin of California is reviewed. Emission reductions achieved, current levels, projected future emissions and the need for further emissions reductions from light duty vehicles are discussed. For other areas of the world where motor vehicles contribute to air pollution, suggestions are made which can improve the effectiveness of emission control efforts; which should be consistent with political and economic realities, and efforts to achieve international harmonization of standards.
Technical Paper

Performance and Exhaust Emission in Spark Ignition Engine Fueled with Methanol-Butane Mixture

1988-03-01
871165
To improve the cold startability of methanol, methanol-butane mixed fuel was experimented. Engine performance and exhaust emissions are obtained with methanol-butane mixed fuel. These characteristics are compared with those of methanol and gasoline. The mixing ratios of methanol and butane are 50:50 (M50), 80:20 (M80), and 90:10 (M90) based on the calorific value. As a result, M90 produces more power than gasoline and more or less than methanol depending on the engine speed and the excess air ratio. Brake horse power of M90 is higher than that of gasoline by 5 - 10 %, and brake specific fuel consumption is smaller than that of gasoline by 17 % to the maximum based on the calorific value. NOx emission concentrations for M90 are lower than those for gasoline and higher than those for methanol because of the effect of butane, CO emission concentrations are somewhat lower than those for methanol and gasoline.
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