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Viewing 1 to 30 of 157
2015-04-14
Technical Paper
2015-01-0475
Truong Nguyen, John Bell
Abstract Modern automotive electrical and electronic architecture is comprised of the battery and charging system, power distribution boxes, electronic control units, electrical devices, grounds, and the means of connecting all of these together - the wire harness or Electrical Distribution System (EDS). As automotive electrical content and complexity increases, it becomes imperative to optimize the weight, size, cost, and manufacturability of a vehicle [1]. In terms of an EDS, the most potential gain can be realized if the EDS supplier and vehicle Original Equipment Manufacturer (OEM) work together during the advanced electrical & electronic architecture development and packaging design process. Traditionally, the electrical content, harness partitioning, and packaging locations are designed by the vehicle OEM with limited advanced input from the EDS supplier.
2014-09-30
Technical Paper
2014-36-0233
M. Mammetti, M. Roche Arroyos
Abstract The ELVA project (Advanced Electric Vehicle Architectures) was aimed at developing specific vehicle concepts and architectures for electric vehicles where no adaptations of existing internal combustion vehicles were made, taking advantage of the new freedoms in design that electric powertrains provide. The project, characterized by an intensive interaction among the partners, was co-funded under the European Commission's 7th Framework Programme and included in the consortium ika (coordinator), Volkswagen, Renault, CRF, Continental, SAFER and Applus+ IDIADA. The paper deals with the development of a web design support tool devoted to designers for the definition of the powertrain components that fulfil the main vehicle targets (range, acceleration and maximum speed) complying with the current regulations and market practices. The main advantage of the tool is that it focuses on the design putting together calculations that typically belong to different fields.
2011-06-13
Technical Paper
2011-38-0063
Giuseppe Mingione, Emiliano Iuliano, Didier Guffond, Cameron Tropea
Recent aircraft incidents and accidents have highlighted the existence of icing cloud characteristics beyond the actual certification envelope defined by the JAR/FAR Appendix C, which accounts for an icing envelope comprising water droplets up to a diameter of 50 μm. The main concern is the presence of SLD (Supercooled Large Droplets), with droplet diameters well beyond 50 microns. In a previous European-funded project, EURICE, in-flight icing conditions and theoretical studies were performed to demonstrate the existence of SLD and to help characterize SLD clouds. Within the EXTICE project the problem of SLD simulation is addressed with both numerical and experimental tools is being addressed. In this paper the objectives and main achievements of the EXTICE project will be described.
2009-07-12
Technical Paper
2009-01-2559
Z. Szigetvari, E. Noack, L. Scharringhausen, R. Mueller, G. Bufano, B. Marco, A. Quaranta, P. Parodi, S. Palumberi
Columbus had been mated to the International Space Station (ISS) in February 2008 and it is working since then nearly flawlessly. Operation of the European Laboratory requires the coordination of different and relocated operational and support centers. Especially, module system level activities, related to functional operation of the ECLSS and TCS subsystems require a multidisciplinary and well coordinated task management between the NASA Houston Space Center, the European Columbus Control Center, the ALTEC/TAS-I and the Astrium Bremen Engineering Support Centers (ESC). The present paper concentrates on the lessons learned during the last year of module operation with emphasis on TCS and ECLSS related activities (e.g. nominal operations, anomaly resolutions, troubleshooting and maintenance activities).
2009-07-12
Technical Paper
2009-01-2529
Sharon M. Singer, David L. Akin
Employing a cooperative human and robotic team has the potential to greatly reduce human workload during space missions and create more efficient operational teams. The Hubble Space Telescope Servicing Mission 3A tasks were assessed and modeled with three different human and robot team pairings to elucidate the difference to team performance. Tasks were allocated to the standard two-human EVA crew and a robotic agent for each of the cases. The schedules reduce the human crew's involvement time in each EVA day's activities by rearranging subtasks to minimize the human crew's wait time. This work examines three agent participation scenarios and their effect on the expected efficiency of the cooperative team during mission activities.
2009-07-12
Technical Paper
2009-01-2513
Julie A. Levri, John A. Hogan, Bruce Deng, Jon Welch, Mike Ho
The On-line Project Information System (OPIS) is the Exploration Life Support (ELS) mechanism for task data sharing and annual reporting. Fiscal year 2008 (FY08) was the first year in which ELS Principal Investigators (PI's) were required to complete an OPIS annual report. The reporting process consists of downloading a template that is customized to the task deliverable type(s), completing the report, and uploading the document to OPIS for review and approval. In addition to providing a general status and overview of OPIS features, this paper describes the user critiques and resulting system modifications of the first year of OPIS reporting efforts. Specifically, this paper discusses process communication and logistics issues, user interface ambiguity, report completion challenges, and the resultant or pending system improvements designed to circumvent such issues for the fiscal year 2009 reporting effort.
2009-07-12
Journal Article
2009-01-2530
Lealem Mulugeta, David Bodkin, Romain Chasseigne, Michael Demel, Dexter Jagula, Matthew Turnock
Several space agencies have announced plans to return humans to the Moon in the near future. The objectives of these missions include using the Moon as a stepping-stone towards crewed missions to Mars, to test advanced technology, and to further exploration of the Moon for scientific research and in-situ resource utilization. To meet these objectives, it will be necessary to establish and operate a lunar base. As a result, a wide variety of tasks that may pose a number of crew health and safety risks will need to be performed on the surface of the Moon. Therefore, to ensure sustainable human presence on the Moon and beyond, it is essential to anticipate potential risks, assess the impact of each risk, and devise mitigation strategies. To address this, a nine-week intensive investigation was performed by an international, interdisciplinary and intercultural team on how to maximize crew safety on the lunar surface through a symbiotic relationship between astronauts and robots.
2009-05-19
Technical Paper
2009-01-2141
Pranab Saha, Jian Pan, Jerry R. Veen
The paper discusses the development of a new SAE standard J2883 for measuring sound absorption performance of absorption materials in a small reverberation room. It discusses the need for such a standard particularly in the automotive industry. It also discusses the need for understanding the parameters such as the room volume, diffusion and cut-off frequency, and the sample size that affect the measurements and how to address these parameters in developing a robust test method. Finally, the paper discusses some of the findings of the round robin tests where measurements were conducted in various size rooms, task force activities, and the proposed repeatability and reproducibility values of the test method.
2009-04-20
Journal Article
2009-01-1390
Ronald J. Soldaat, Jamal Alghanem, Ming Chen, Stephen K. Kernosky, Thomas B. Stoughton, Lorraine Tervo
Over the past twelve years the Auto/Steel Partnership (A/SP) Tube Hydroforming Materials and Lubricants Team has been conducting projects to aid the implementation of tubular hydroforming in automotive applications. The approach taken has been to initially gain a basic understanding of the hydroforming process and potential issues and to then extend learning to real world applications of increasing complexity. The experimental project investigations have encompassed various steel grades with a recent focus on advanced high strength steel (AHSS) and tailor welded tubes (TWTs) in free expansion and corner fill processes using several types of lubricants. Project plans are developed based on identified knowledge gaps, barriers to implementation and technology needs as follows: Effects of forming operations prior to hydroforming including tube making, pre-bending and pre-forming. Forming limits (e.g. forming limit diagrams (FLDs)) and other failure criterion.
2008-11-11
Technical Paper
2008-01-2902
Evgeni Ganev, Mike Koerner, William Warr
In association with NASA Glenn Research Center and Lockheed Martin Space Systems, Honeywell has developed and successfully tested an electric power generation system that uses non-toxic hydrogen and oxygen propellants that are reacted catalytically. The resulting fuel-rich gases drive a turbogenerator. Speed control of this system is challenging due to highly variable electric load profile. Discrete two-position valves were used to control the propellant flow for improved reliability compared to proportional valves. This “bang-bang” speed control method exhibits variation in turbine acceleration and deceleration with load. The control thresholds for the turbine speed are adjusted based on load so as to compensate for increased speed overshoot and undershoot.
2008-10-20
Technical Paper
2008-21-0013
Gustavo O. Collantes
This paper discusses some of the key issues that policy would need to address to effectively encourage significant innovation in hybrid electric vehicle technologies. Emphasis is placed in related provisions in the Energy Independence and Security Act of 2007, as the energy legislation that authorizes (though appropriations have not occurred yet) the allocation of public resources to vehicle technology programs. Private investment in vehicle hybridization is contingent on expectations about future oil prices, which in turn are highly uncertain. The importance of addressing this issue in the context of technology innovation policy is discussed.
2008-10-20
Technical Paper
2008-21-0019
Gerulf Kinkelin, Alain Gilberg, Bertrand Delord, Harald Heinecke, Simon Fürst, Juergen Moessinger, Andreas Lapp, Ulrich Virnich, Stefan Bunzel, Thomas Weber, Noë Spinner, Lennart Lundh, Daniel Svensson, Peter Heitkämper, Fredrik Mattsson, Kenji Nishikawa, Hiroyuki Hirano, Klaus Lange, Bernd Kunkel
The AUTomotive Open System ARchitecture (AUTOSAR) Development Partnership has published early 2008 the specifications Release 3.0 [1], with a prime focus on the overall architecture, basic software, run time environment, communication stacks and methodology. Heavy developments have taken place in the OEM and supplier community to deliver AUTOSAR loaded cars on the streets starting 2008 [2]. The 2008 achievements have been: Improving the specifications in order to secure the exploitation for body, chassis and powertrain applications Adding major features: safety related functionalities, OBD II and Telematics application interfaces.
2008-10-20
Technical Paper
2008-21-0044
Bob Brincheck
Capitalism has followed cheap labor since before the Industrial Revolution. However, high-skilled work like programming and engineering has recently begun traveling to low-cost nations, and as a result, the eternal challenge of balancing cost and risk has even more serious consequences. The new outsourcing models that help companies stay cost-competitive in the short run, may hurt them in the long run by creating competitors who adapt or outright steal their intellectual property. This paper outlines how product lifecycle management (PLM) solutions can be used to outsource engineering without sacrificing cost controls, intellectual property integrity, or in-house engineering talent. It describes collaboration models built around advanced design technology that inject efficiency into engineering processes at every level, enabling companies to balance short and long term concerns.
2008-10-07
Technical Paper
2008-36-0113
Carlo Giovanni Petrucci Zanovello
This work intends to present one of the several ways to manage these productivity gains, communizing parts with ideas given from the supplier. Nowadays, the costumers on automotive industry manage to reduce the products complexity by its own engineering departments. There shall be presented the supplier capacity on proposing this communization based not only on its own production line information, but, also, based on the part application knowledge in the final product. Then, when these two lines of thought complete themselves, the solutions proposed have a lower supplier cost impact and a higher gain on complexity reduction to the costumer.
2008-10-07
Technical Paper
2008-36-0195
Raoni Barros Bagno, Guilherme Antônio Assis Machado, Celso Luiz Fratta
This article aims to show how the development of innovative products within the automotive industry in Brazil has been oriented, linking technological competences construction in local poles with suppliers and headquarters cooperation. The discussion in this article is illustrated by the development and application analysis of an electronic locker differential integrated to a front transversal transmission, which is the world's first commercial application. It proposes, through a case study, a relationship between the subjects discussed in here and the new tendencies for product development within the automotive industry and also for the world's R&D flow.
2008-06-23
Technical Paper
2008-01-1711
Matt Best, Jiamei Deng, Richard Stobart, James Marco
Traditionally, university research in engine technology has been focused on fundamental engine phenomena. Increasingly however, research topics are developing in the form of systems issues. Examples include air and exhaust gas recirculation (EGR) management, after-treatment systems, engine cooling, hybrid systems and energy recovery. This trend leads to the need for engine research to be conducted using currently available products and components that are re-configured or incrementally improved to support a particular research investigation. A production engine will include an electronic control unit (ECU) that must be understood and utilised or simply removed and circumvented. In general the intellectual property (IP) limitations places on ECUs by their suppliers mean that they cannot be used. The supplier of the ECU is usually unable to reveal any detail of the implementation. As a consequence any research using production hardware is seriously disadvantaged from the beginning.
2008-06-23
Technical Paper
2008-01-1515
Peter Jackson, Bart Addis, Gao Jun, Suo GuoTao, Umesh Sawant
The paper covers the design and development of a new 13L heavy-duty diesel engine intended primarily for heavy truck applications in China. It provides information on the specific characteristics of the engine that make it particularly suitable for operation in China, and describes in detail some of the design techniques that were used. To meet these exacting requirements, extensive use was made of Analysis-Led Design, which allows components, sub-systems and the entire engine, aftertreatment and vehicle system to be modeled before designs are taken to prototype hardware. This enables a level of system and sub-system optimization not previously available. The paper describes the emissions strategy for China, and the physical design strategy for the new engine, and provides some engine performance robustness details. The engine architecture is discussed and the paper details the analysis of the major components - cylinder block, head, head seal, power cylinder and bearings.
2008-06-23
Technical Paper
2008-01-1775
Jun Zhu, Tianyou Guo, Yukun Shi, Jin Cao, Wenhui Zhang
The price of fossil fuels and the increasing inexorable energy crisis have become vital issues for everyone. Tongji University EconoPower Racing Team was established to participate in the “Honda EconoPower Cup” annually. Every contestant in the competition must finish a certain distance in the fixed time, with the gasoline supplied by the committee. After that the committee will measure the fuel consumption of every team and calculate the distance per liter fuel (the farther the better) to determine the champion. In order to enhance the EP vehicle's achievement we've made some improvements, such as framework, body, engine's optimization and so on. In this passage we mainly state some details of our research approaches in framework, steering, transmission, shape and driving strategy. The main technologies were: friction reduction, lightweight, enhancement of power train efficiency, tire selection and driving strategy.
2008-06-23
Technical Paper
2008-01-1780
Rui Cai, Jiabo Ye, Yang Wang, Lin Chen
“Soichiro Honda Cup, Honda Econo-Power Competition”, is an annual international energy-saving competition which is hosted by Honda Motor Co., Ltd. Till now it has been held 27 sessions. The aims of the EP project are: promoting the development of environmental protection, making full use of limit earth resources, challenging the fuel consumption limitation of vehicle. Tongji University's students' team has participated in the competition for seven consecutive times. In order to minimize the fuel consumption of the EP energy-saving vehicle, this paper focuses on the technical methods of improving the fuel economy of the engine. Firstly, the optimization of the carburetor. Secondly, for the purpose of improving combustion efficiency, researches on dual spark plug and compression ratio are done.
2008-06-17
Technical Paper
2008-01-1874
Thomas Alexander, Siegmund Schimanski
Cooperation and communication between team members is essential for an efficient and effective teamwork. Modeling and simulation of the corresponding processes during task analysis helps to identify shortcomings in both areas and to enhance the overall team performance. This is crucial for military mission preparation when soldiers frequently act as a team. In this case the mission's success requires optimal tasks assignment, planning, and execution. This paper presents a novel method and technique how to describe, model, and analyze military team cooperation processes for a subsequent simulation. The focus is on communication between team members.
2008-04-14
Technical Paper
2008-01-1285
John M. Cabaniss, Charles Gorman, Wayne Juchno
In 1990 in the USA, Section 206 of the Clean Air Act ushered in a new era in passenger car and light truck service and maintenance. Ensuing requirements led to introduction of sophisticated vehicle on-board diagnostic systems. These systems demand the increasing sophistication of service providers. The amount of service information has expanded exponentially. The sophistication of the tools needed to diagnose and repair vehicles has become increasingly complex. To meet the needs of today's service professionals, new systems had to be developed. The convergence of regulations, vehicle complexity, tool capabilities and the growing volume of service information required the vehicle producers and service communities to implement more efficient information delivery systems.
2008-04-14
Journal Article
2008-01-0412
Carlos Eduardo DaSilva
Making the decision to extend a supply chain into the international market can add value to a company's competitive advantage, particularly for global businesses with local manufacturing partners. This paper will address key elements to foster a successful Program Project Management using Critical Chain principles for source identification, adjustment and harmonization of the necessary knowledge and standards to balance the differences between cultures and technology, including in this discussion a Risk Management tool and the transition to a Global Quality approach to build and maintain strong relationships throughout a worldwide supply base.
2008-04-14
Journal Article
2008-01-1279
Ravi Anand, Beena Anand, Subra Ganesan
Increasingly Automotive OEMs and their suppliers find themselves spread across different continents. This in turn gives rise to knowledge, physical assets and key decision makers also being spread across the globe. This poses significant challenges for the companies to effectively manage and keep track of their resources. It is also challenging to work with teams spread across globe and for the team to arrive at intelligent decisions quickly and efficiently. In last few years we have spent significant amount of person hours trying to create systems and Software to help manage Workflow and Assets spread across diverse Geographic and Political areas.
2007-11-28
Technical Paper
2007-01-2688
Viviane Vasconcellos Ferreira Grubisic, André Ogliari, Cristiano Vasconcellos Ferreira
The attributes of the project team play a fundamental role in the product development process (PDP), since they, have a significant influence on the conducting of activities, making of decisions and liaison with customers. The importance of the project team is also recognized in the management of the potential risks that can appear during the PDP, because risk management (RM) depends strongly on the company culture and the commitment of the project team involved. However, in general, the culture of a company is not pro-active in the sense of anticipating potential problems that may appear and generally the project team resists analyzing these potential problems for fear of exposing and consequently committing themselves. In this regard, this paper presents a brief introduction on product development and its importance and management. Subjects related to risk management, the product design process and the project team are then discussed.
2007-11-28
Technical Paper
2007-01-2689
Rafael de Lima Ramos, Marco Antonio Camargo, Carlos Alberto Costa, Marcos Alexandre Luciano
In the segment of heavy transport, trailers can have a wide range of configurations depending on their application. This can vary from mining to agriculture applications, each one with its own requirements and characteristics. Therefore, companies usually configure their engineering teams according to these applications. This provides much focused knowledge about each product application; however, when looking from the whole company's viewpoint, this kind of configuration can result in barriers to share information and knowledge, as many of the products’ functions and systems can be the same. This paper presents a study of product architecture for the trailers transport sector in a Brazilian company, leader in this segment. This architecture, based on the concept of product models, provides a wide structure which can support and capture the embodiment of most products of the company. For the embodiment of the architecture developed, the UML (Unified Modeling Language) has been used.
2007-07-23
Technical Paper
2007-01-1843
E. Meeks, J. M. Deur, D. Hodgson, M. V. Petrova, K. V. Puduppakkam, C. Wang, C. K. Westbrook, A. M. Dean, W. H. Green, M. Koshi, U. Maas
To address the growing need for detailed chemistry in engine simulations, new software tools and validated data sets are being developed under an industry-funded consortium involving members from the automotive and fuels industry. The results described here include systematic comparison and validation of detailed chemistry models using a wide range of fundamental experimental data, and the development of software tools that support the use of detailed mechanisms in engineering simulations. Such tools include the automated reduction of reaction mechanisms for targeted simulation conditions. Selected results are presented and discussed.
2007-07-09
Technical Paper
2007-01-3232
David L. Akin, Shane Jacobs, David Gruntz
Extensive prior research at the University of Maryland Space Systems Laboratory has identified significant operational advantages to high levels of integration between EVA crew and dexterous robotics. Crew performance on recent Hubble Space Telescope repair missions was broken down into task primitives, and evaluated for the impact of dexterous robotics in direct support of extravehicular activity. Results demonstrate that direct EVA-robotic cooperation can increase human performance in satellite servicing tasks by factors ranging from at least 60% (for highly complex and dexterous servicing tasks) to as much as 400% for more simple activities with greater levels of planned orbital replacement unit (ORU) interchange. This paper details experimental and analytical investigations of differing approaches to adding dexterous robotic capabilities to the EVA work site, via increasingly direct integration of robotics into the space suit system itself.
2007-06-12
Technical Paper
2007-01-2478
Matthew P. Reed, David W. Wagner
Industrial tasks performed by standing workers are among those most commonly simulated using digital human models. Workers often walk, turn, and take acyclic steps as they perform these tasks. Current h uman modeling tools lack the capability to simulate these whole body motions accurately. Most models simulate walking by replaying joint angle trajectories corresponding to a general gait pattern. Turning is simulated poorly if at all, and violations of kinematic constraints between the feet and ground are common. Moreover, current models do not accurately predict foot placement with respect to loads and other hand targets, diminishing the utility of the associated ergonomic analyses. A new approach to simulating stepping and walking in task-oriented activities is proposed. Foot placements and motions are predicted from operator and task characteristics using empirical models derived from laboratory data and validated using field data from an auto assembly plant.
2007-05-15
Technical Paper
2007-01-2338
Thierry Debelle, Kurt Veggeberg, Chris DeFilippo
Modular instrumentation is being widely used in noise and vibration measurement systems that demand higher channel counts and the wider dynamic range that 24-bit delta-sigma ADCs make available at lower costs. This is an overview how flexible modular instrumentation employing the latest software technology can be used in making high precision noise and vibration measurements where higher sampling rates, higher channel counts, increased dynamic range, and distributed architectures were needed in smaller packages. An example where this is being used is in acoustic beam forming in aircraft pass by noise tests to measure and distinguish engine and airframe noise sources.
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