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Solving The Car Sequencing Problem Using Heuristic Approaches (Définition De La Séquence De Production Pour Une Linge D’Assemblage D’Automobiles​), Soumia Ichoua, Abdelilah Chiguer, Fayez F. Boctor 2015 Embry-Riddle Aeronautical University

Solving The Car Sequencing Problem Using Heuristic Approaches (Définition De La Séquence De Production Pour Une Linge D’Assemblage D’Automobiles​), Soumia Ichoua, Abdelilah Chiguer, Fayez F. Boctor

Soumia Ichoua

Le principe de la personnalisation de l’offre amène l’industrie de l’automobile à proposer, pour chaque modèle vendu, un nombre important d’options, telles que le toit ouvrant, l’air climatisé ou les freins ABS. Cette diversité d’options nous oblige à accorder une grande attention au problème de la détermination de la séquence de voitures à assembler car l’équilibrage de la ligne d’assemblage en dépend. Pour définir une bonne séquence pour une journée de travail, nous proposons d’utiliser des heuristiques pour générer une séquence initiale puis d’utiliser des procédures pour en améliorer la ...


Physics-Based Modeling And Control Of Powertrain Systems Integrated With Low Temperature Combustion Engines, Mehran Bidarvatan 2015 Michigan Technological University

Physics-Based Modeling And Control Of Powertrain Systems Integrated With Low Temperature Combustion Engines, Mehran Bidarvatan

Dissertations, Master's Theses and Master's Reports

Low Temperature Combustion (LTC) holds promise for high thermal efficiency and low Nitrogen Oxides (NOx) and Particulate Matter (PM) exhaust emissions. Fast and robust control of different engine variables is a major challenge for real-time model-based control of LTC. This thesis concentrates on control of powertrain systems that are integrated with a specific type of LTC engines called Homogenous Charge Compression Ignition (HCCI). In this thesis, accurate mean value and dynamic cycleto- cycle Control Oriented Models (COMs) are developed to capture the dynamics of HCCI engine operation. The COMs are experimentally validated for a wide range of HCCI steady-state and ...


A Quantitative Investigation Of The Water Condensation Inside Tubes Of Compact Charge Air Cooler, Robin Cash 2015 Michigan Technological University

A Quantitative Investigation Of The Water Condensation Inside Tubes Of Compact Charge Air Cooler, Robin Cash

Dissertations, Master's Theses and Master's Reports

To address the need of increasing fuel economy requirements, automotive Original Equipment Manufacturers (OEMs) are increasing the number of turbocharged engines in their powertrain line-ups. The turbine-driven technology uses a forced induction device, which increases engine performance by increasing the density of the air charge being drawn into the cylinder. Denser air allows more fuel to be introduced into the combustion chamber, thus increasing engine performance. During the compression process, the air is heated to temperatures that can cause pre-ignition, resulting in reduced engine functionality. The introduction of the charge air cooler (CAC) is therefore, necessary to extract heat from ...


Modeling And Analysis Of Reactivity Controlled Compression Ignition (Rcci) Combustion, Mohammadreza Nazemi 2015 Michigan Technological University

Modeling And Analysis Of Reactivity Controlled Compression Ignition (Rcci) Combustion, Mohammadreza Nazemi

Dissertations, Master's Theses and Master's Reports - Open

Homogeneous Charge Compression Ignition (HCCI) and Premixed Charge Compression Ignition (PCCI) combustion strategies are promising methods for achieving low engine-out NOx and soot emissions as well as high indicated efficiency. However, these combustion strategies have difficulties with controlling the rate of heat release and lack of an adequate combustion phasing control mechanism. A dual-fuel Reactivity Controlled Compression Ignition (RCCI) combustion strategy will address these issues due to the existence of precise means for controlling the heat release rate and combustion phasing. In the RCCI strategy two fuels with different reactivity (auto-ignition characteristics, e.g., gasoline and diesel) are blended inside ...


The Black Box Solution To Autonomous Liability, Ujjayini Bose 2015 Washington University School of Law

The Black Box Solution To Autonomous Liability, Ujjayini Bose

Washington University Law Review

Autonomous vehicles, or self-driving cars, have the potential to revolutionize modern transportation through increased productivity and safety. Today, industry leaders in both automotive manufacturing and technology development are engaged in the design and production of these vehicles. Representatives from these companies have already successfully lobbied a number of state legislatures to permit the testing and use of autonomous vehicles.

While the prospect of a mass market in autonomous vehicles is exciting for both consumers and manufacturers, the use of autonomous vehicles implicates novel legal issues. For example, when a car drives itself, who is responsible when it crashes? Should the ...


Designing A Heat Sink For Lithium-Ion Battery Packs In Electric Vehicles, Dylan Irvine, Evan Foreman, Christopher B. Remington, Aaron Jackson, Sam Endrizzi 2015 University of Akron Main Campus

Designing A Heat Sink For Lithium-Ion Battery Packs In Electric Vehicles, Dylan Irvine, Evan Foreman, Christopher B. Remington, Aaron Jackson, Sam Endrizzi

Williams Honors College, Honors Research Projects

This report addresses the concepts and implementation of fluid cooled heat sink designs for an electric or hybrid vehicle battery. To determine the battery’s temperature and heat flux profile, testing was performed by measuring these values at multiple locations on a lithium-ion pouch battery using heat flux sensors and thermocouples during the charge and discharge cycles of the battery. Once the data was collected and analyzed, trendlines were fit to the heat flux data then used to create equations for the heat flux profile during the discharging stage. Each equation represented a specific region on the battery geometry. Four ...


Designing A Heat Sink For Lithium-Ion Battery Packs In Electric Vehicles, Evan Foreman, Dylan Irvine, Aaron Jackson, Christopher Brandon Remington, Sam Endrizzi 2015 The University Of Akron

Designing A Heat Sink For Lithium-Ion Battery Packs In Electric Vehicles, Evan Foreman, Dylan Irvine, Aaron Jackson, Christopher Brandon Remington, Sam Endrizzi

Williams Honors College, Honors Research Projects

This report addresses the concepts and implementation of fluid cooled heat sink designs for an electric or hybrid vehicle battery. To determine the battery’s temperature and heat flux profile, testing was performed by measuring these values at multiple locations on a lithium-ion pouch battery using heat flux sensors and thermocouples during the charge and discharge cycles of the battery. Once the data was collected and analyzed, trendlines were fit to the heat flux data then used to create equations for the heat flux profile during the discharging stage. Each equation represented a specific region on the battery geometry. Four ...


Crash Frequency Analysis Of Left-Side Merging And Diverging Areas On Urban Freeway Segments: A Case Study Of I-75 Through Downtown Dayton, Ohio, Deogratias Eustace, Aline Aylo, Worku Y. Mergia 2015 University of Dayton

Crash Frequency Analysis Of Left-Side Merging And Diverging Areas On Urban Freeway Segments: A Case Study Of I-75 Through Downtown Dayton, Ohio, Deogratias Eustace, Aline Aylo, Worku Y. Mergia

Civil and Environmental Engineering and Engineering Mechanics Faculty Publications

This paper analyzes the effect of left- and right-side merging and diverging areas and other variables such as light condition, roadway pavement condition, drivers’ age and presence of construction work zones on the occurrence frequency of crashes. A 6.5-mile (10.5-km) section of I-75 that passes through downtown Dayton, Ohio was considered. The area of interest has a high traffic volume and consists of different geometric design challenges including closely spaced merging and diverging ramps. A four-year record of crash data (2005–2008) and a statistical modeling technique that assumes a negative binomial distribution on generalized linear models (GLMs ...


Inkjet Printing: Facing Challenges And Its New Applications In Coating Industry, Sadegh Poozesh 2015 University of Kentucky

Inkjet Printing: Facing Challenges And Its New Applications In Coating Industry, Sadegh Poozesh

Theses and Dissertations--Mechanical Engineering

This study is devoted to some of the most important issues for advancing inkjet printing for possible application in the coating industry with a focus on piezoelectric droplet on demand (DOD) inkjet technology. Current problems, as embodied in liquid filament breakup along with satellite droplet formation and reduction in droplet sizes, are discussed and then potential solutions identified. For satellite droplets, it is shown that liquid filament break-up behavior can be predicted by using a combination of two pi-numbers, including the Weber number, We and the Ohnesorge number, Oh, or the Reynolds number, Re, and the Weber number, We. All ...


Design And Implementation Of A Mobile Test Cell, Timothy J. Okkema 2015 Michigan Technological University

Design And Implementation Of A Mobile Test Cell, Timothy J. Okkema

Dissertations, Master's Theses and Master's Reports - Open

In this thesis, a modular powertrain mounting and instrumentation system is developed to increase engine testing efficiency in the Michigan Technological University Mobile Laboratory (Mobile Lab). This method is specifically designed for use in an on-the-road application with limited space where traditional engine test cell designs are not practical. This system is made to be robust, but simple enough that it can easily be built by future powertrain test engineers. In addition, a wall mounted diesel system was developed to provide common rail injection pressures to add the ability for conversion of mechanical injected diesel engines. And finally, an engine ...


Design Of The University Of Akron's 2015 Fsae Electric Vehicle Braking System, Nicholas D. Galbincea 2015 University of Akron Main Campus

Design Of The University Of Akron's 2015 Fsae Electric Vehicle Braking System, Nicholas D. Galbincea

Williams Honors College, Honors Research Projects

The following report encompasses the design of the 2015 University of Akron’s FSAE formula electric braking system. The system is one based on hydraulic braking and designed for a one man performance racing vehicle. The objective of the system is to convert the kinetic energy of the vehicle into thermal energy, allowing the vehicle to decelerate optimally and safely. The design includes three major categories: calculation and evaluation of the hydraulic system in order to select calipers and master cylinders, the design of the pedal box, and the design of the rotors.

The results and findings of the proceeding ...


Composite Tie Rod Research, Design And Testing For Sae Baja, Amanda M. Nauman 2015 The University Of Akron

Composite Tie Rod Research, Design And Testing For Sae Baja, Amanda M. Nauman

Williams Honors College, Honors Research Projects

Composite materials have become increasing popular in recent years. For the Baja SAE team, composites are typically only used for body panels. To grow as a team and to earn additional points in design competition, it was decided to explore composite use in mechanical applications, specifically for the tie rods. Research was conducted, looking into composite materials basics, types, and material properties. Additionally, manufacturing was explored, including a few projects separate from the tie rod application. 3D models were created after the materials were selected, and FEA analysis was conducted on the parts. Once theoretical testing was finished, the physical ...


Quantifying Road Roughness: Multiresolution And Near Real-Time Analysis, Ahmad Abdulraheem Alhasan 2015 Iowa State University

Quantifying Road Roughness: Multiresolution And Near Real-Time Analysis, Ahmad Abdulraheem Alhasan

Graduate Theses and Dissertations

Road roughness is a key parameter for road construction and for assessing ride quality during the life of paved and unpaved road systems. The quarter-car model (QC model), is a standard mathematical tool for estimating suspension responses and can be used for summative or pointwise analysis of vehicle response to road geometry.

In fact, transportation agencies specify roughness requirements as summative values for pavement projects that affect construction practices and contractor pay factors. The International Roughness Index (IRI), a summative statistic of quarter-car suspension response, is widely used to characterize overall roughness profiles of pavement stretches but does not provide ...


Addressing New Skills Needed For The Automotive Industry Through A Motorsports Educational Pathway, Vukica M. Jovanovic, Mileta M. Tomovic, Alok K. Verma, Nathan Luetke, Steve Branch 2015 Old Dominion University

Addressing New Skills Needed For The Automotive Industry Through A Motorsports Educational Pathway, Vukica M. Jovanovic, Mileta M. Tomovic, Alok K. Verma, Nathan Luetke, Steve Branch

Engineering Technology Faculty Publications

The automotive industry has higher-skilled positions available that need engineers and engineering technologists qualified and capable to work in a high-paced, advanced manufacturing sector. Various educational programs across the country offer programs related to the motorsports area at the Associate of Science level. There are also various articu-lation agreements that enable students to continue their education to the baccalaureate level. These programs try to fill in the gap related to the skills shortage in systems and new design methods and processes. The main strength of such educational pathways is that students, who are trained to work as technicians with an ...


Examination Of The Effects Of External Load, Velocity, And Center Of Gravity On Weight Estimation Using A Lifting Linkage, Ryan McCleish 2015 Iowa State University

Examination Of The Effects Of External Load, Velocity, And Center Of Gravity On Weight Estimation Using A Lifting Linkage, Ryan Mccleish

Graduate Theses and Dissertations

Having an accurate measurement of the weight of a vehicle payload is important, when moving material. An accurate knowledge of the payload can increase efficiency during material transportation, by ensuring the maximum payload is being moved. Many existing weight measurement systems exist but are often costly, add significant weight, or increase operating time. An improved dynamic weight measurement system to estimate the weight of a payload inside of a container is proposed in this research. Using pressure transducers and angle sensors on a lifting linkage, the weight of a payload is calculated in constant motion, which minimizes any time loss ...


Binder Jet Additive Manufacturing Of Stainless Steel-Hydroxyapatite Bio-Composite, Don Suranga Dhanushka Uduwage 2015 Minnesota State University - Mankato

Binder Jet Additive Manufacturing Of Stainless Steel-Hydroxyapatite Bio-Composite, Don Suranga Dhanushka Uduwage

All Theses, Dissertations, and Other Capstone Projects

This study was conducted to create a bio-composite with a porous structure using the binder-jet printing additive manufacturing process. The samples were printed by changing the parameters such as layer thickness, roller speed, sintering time and sintering temperature of the X1-Lab binder jet additive manufacturing printer. The samples were printed 80% stainless steel 316 mixed with 20% Calcium Phosphate Tribasic by volume. Eight experiments were attempted to print according to the fractional factorial design of experiment. The effects of changing parameters on the mechanical properties of the new bio-composite was tested using ASTM E-09 compressive strength standards. The compression testing ...


Air Flow And Rain Water Penetration Analysis On Generator Enclosures Using Cfd Simulations, Sasanka Andawatta Kankanamge 2015 Minnesota State University - Mankato

Air Flow And Rain Water Penetration Analysis On Generator Enclosures Using Cfd Simulations, Sasanka Andawatta Kankanamge

All Theses, Dissertations, and Other Capstone Projects

Rain water penetration testing on power generator units requires a number of complicated procedures, requiring many resources. As such, a Computational Fluid Dynamics (CFD) tool, "FloEFD for Creo" is used to study the water penetration behavior on a OM924 diesel power generator enclosure in a computational environment. First, the three governing equations in fluid dynamics are derived and explained using simple methods. Next, behavior of rain water droplets upon impact is briefly discussed. Air velocity, volumetric flow rate and static pressure drop were measured physically in the OM924 generator enclosure. Then, a CFD model for the OM924 enclosure was developed ...


Simulation Of A Regenerative Electromagnetic Vehicle Suspension, Fabio Tarantini 2015 University of Windsor

Simulation Of A Regenerative Electromagnetic Vehicle Suspension, Fabio Tarantini

Electronic Theses and Dissertations

In the last two decades, legislation that regulates carbon dioxide emissions are getting more and more stringent. In order to meet these regulations, fuel efficiency must be increased. This can be possible using devices that recover otherwise wasted energy. In this study, an electromagnetic regenerative shock absorber is analyzed. The device is capable of converting the vibrational energy, usually wasted as heat in conventional dampers, into electrical energy. The objective of this work is to develop a Matlab® model of the system in order to evaluate the gain in terms of harvested energy. The dynamic performance of the selected regenerative ...


Numerical Investigation Of Steady-State And Transient Operations Of A Turbocharged Si Engine With Electric Supercharger, Ivan Filidoro 2015 University of Windsor

Numerical Investigation Of Steady-State And Transient Operations Of A Turbocharged Si Engine With Electric Supercharger, Ivan Filidoro

Electronic Theses and Dissertations

Gasoline engine downsizing, associated with turbocharging, has proved to be one of the most effective ways to reduce specific fuel consumption of the internal combustion engine. This tendency introduces a number of technical challenges, such as reduced steady-state low speed torque, delay in transient response caused by the turbocharger, combustion limitations due to propensity to knock. Advanced boosting systems can succeed in overcoming these issues; of particular interest is the solution featuring a second, electrically-driven, compressor in series with the turbocharger compressor. The engine considered in this work is a four-cylinder inline, turbocharged and electrically supercharged engine by FCA. In ...


Computational Fluid Dynamics Modeling Of The Effects Of Water Injection In A Diesel Engine, Rabun Z. Wallace 2015 Georgia Southern University

Computational Fluid Dynamics Modeling Of The Effects Of Water Injection In A Diesel Engine, Rabun Z. Wallace

Electronic Theses and Dissertations

Water injection has been used in internal combustion engines for many years. It has been used to cool combustion temperatures, reduce emissions, and in some instances clean carbon buildup from the cylinder. Research has shown that the water to fuel mass ratio is most effective between 20-30%, so the upper and lower limit were used for simulations in Converge CFD. To validate the CFD model, a case without water injection was compared to experimental data from Sandia National Laboratory. The predicted in-cylinder pressure and heat release rate showed good agreement with the experimental data. Cases were run with the injection ...


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