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Viewing 151 to 180 of 12968
2014-04-01
Technical Paper
2014-01-0421
Yohsuke Tamura, Masayuki Takeuchi, Kiyotaka Maeda, Noriaki Ohtsuka, Kenji Sato
The localized fire test provided in the Global Technical Regulation for Hydrogen Fuel Cell Vehicles gives two separate test methods: the ‘generic installation test - Method 1′ and the ‘specific vehicle installation test - Method 2′. Vehicle manufacturers are required to apply either of the two methods. Focused on Method 2, the present study was conducted to determine the characteristics and validity of Method 2. Test results under identical burner flame temperature conditions and the effects of cylinder protection covers made of different materials were compared between Method 1 and Method 2. The following results were obtained: (1) Methods 1 and 2 produced nearly identical results when the minimum temperature profile in the GTR test procedure was followed in both cases. (2) A steel protection cover on the cylinder significantly lowered cylinder surface temperatures during the fire test until activation of the thermal pressure relief device (TPRD). (3) A thermoplastic cover on the cylinder melted during the fire test and produced an engulfing pool fire during the localized fire portion of the test that accelerated activation of the TPRD.
2014-04-01
Technical Paper
2014-01-0379
Mallikarjuna Bennur, Jianmin Guan, Dilip Mandal
This paper presents the most recent advancement in the vehicle development process using the one-step or auto Transfer Path Analysis (TPA) in conjunction with the superelement, component mode synthesis, and automated multi-level substructuring techniques. The goal is to identify the possible ways of energy transfer from the various sources of excitation through numerous interfaces to given target locations. The full vehicle model, consists of superelements, has been validated with the detailed system model for all loadcases. The forces/loads can be from rotating components, powertrain, transfer case, chain drives, pumps, prop-shaft, differential, tire-wheel unbalance, road input, etc., and the receiver can be at driver/passenger ears, steering column/wheel, seats, etc. The traditional TPA involves two solver runs, and can be fairly complex to setup in order to ensure that the results from the two runs are consistent with subcases properly labeled as input to the TPA utility. However, auto TPA allows necessary data needed for the TPA analysis to be requested in a single frequency response analysis run.
2014-04-01
Technical Paper
2014-01-0772
Fengzhu LI, Shunan Bao, Sijun LI
Lean logistics is an application of lean manufacturing principles. The core of lean logistics is to eliminate all non-value-added activities (waste) within productions, movements and storages. It reduces lead time, cuts cost, and improves quality. In order to be competitive, enterprises in western countries widely use lean manufacturing and logistics principles in automotive industries, especially for engine manufacturing system due to its high contents of assembly work. However, in China, lean logistics and its applications are fairly new to many companies. This article analyzes the current status of lean logistics in engine manufacturing in China, summarizes lean logistics principles, put forwards application of lean logistics principles based on a real case study of a new manufacturing system planning. In details, origins of the lean logistics are introduced, characteristics of engine manufacturing logistics are outlined, requirements of the lean logistics system are proposed, PFEP (Plan for Every Part) methodology is used, and packaging specifications are analyzed.
2014-04-01
Technical Paper
2014-01-1780
Soovadeep Bakshi, Parveen Dhillon, Teja Maruvada
This paper presents the method of designing an optimized light weight, cost effective planetary gearbox for a Formula Student vehicle. The gearbox has a high speed functioning capability, in addition to the compact size and light weight. The iterative optimization procedure used provides a technique for selecting the best possible configuration of the gearbox. Conventional gearboxes used for this purpose are generally two step reduction gearboxes, which are bulkier in terms of weight and volume. Also, a review of the existing market reveals that the planetary gearboxes manufactured in India are not capable of handling high speeds, thus rendering them futile for racing applications. The target reduction ratio for the gearbox is a fixed parameter. The method involves design and optimization of the gear-train with the calculated ratio. A detailed algorithm has been used, which involves developing a mathematically modelled code for deciding gear characteristics, physical modelling using CAD, and structural testing of the same through simulation, with repeated iterations with a target to reduce both weight and volume.
2014-04-01
Technical Paper
2014-01-1515
Lifeng Wang, Takeshi Kadono, Satoshi Sumiya
Low cost and S(sulphur)-tolerant DOCs (Diesel Oxidation Catalysts) are being demanded in emerging countries such as China and India, where Euro 4 and 5 type emission standards are going to be implemented or are being implemented. However, fuel S content is different in the metros vis-à-vis non metros in many emerging countries. In such a scenario, DOCs need to maintain catalytic performance with high S fuel as well as standard low S fuel. This paper describes the development results of S tolerant Pt-Pd based DOCs. A new washcoat technology (WT D) has been developed for EU 4 passive Pt-Pd DOC applications, in which PGM cost was thrifted by replacing part of Pt by Pd. Vehicle test results after thermal ageing and S poisoning demonstrated that the Pt-Pd DOC (Pt:Pd=4:1) prepared with WT D gave similar tailpipe CO (Carbon monoxide) and HC (Hydrocarbon) emission conversions as a commercially available EU 4 passive Pt-only DOC when 50ppm S diesel fuel was used. When 350ppm S fuel was used, the Pt-Pd DOC exhibits higher CO and THC emission conversions than the Pt DOC.
2014-03-31
Standard
J595_201403
This document provides design guidelines, test procedure references, and performance requirements for directional, single color, flashing optical warning devices used on authorized emergency, maintenance and service vehicles. It is intended to apply to, but not limited to, surface land vehicles.
2014-03-26
Book
IHS SupplierBusiness' new Supplying the Renault-Nissan Alliance report provides a unique insight into the environment in which the OEMs make their critical sourcing decisions, analyzing how Renault-Nissan is moving forward in terms of models and technology. The report also looks at what issues are affecting the OEMs' supply and manufacturing base. The report is based on interviews with key purchasing executives, featuring IHS Automotive's industry standard forecasting and analysis on the following topics, among others: • Product and Platform Strategy • Production Strategy • Purchasing Strategy • Supplier Selection • Global Sourcing • Pricing Policy • Quality Management • Technology Development • OEM-Supplier Relations Survey Results While the primary product of the Renault-Nissan Alliance is new vehicle production, the primary purpose of the Alliance is to achieve cost savings across those business divisions integral to delivering new vehicles. This search and implementation of cross-OEM synergies has been gathering pace since the Alliance was formed in 1999, via such methods as vehicle platform sharing and whole vehicle sharing, which takes the form of cross-brand rebadging.
2014-03-25
Article
Many people are skeptical of electrified vehicles (EVs)—and specifically the battery pack, because it is the most expensive part of the auto. By building an explanation that is more accessible to society, the industry (and the world!) will benefit.
2014-03-24
Technical Paper
2014-01-2030
Bo-Chiuan Chen, Chang-Wei Shih, Yuming Lin
Abstract Time-to-collision (TTC) can be used to design the forward collision warning system (FCWS). Conventional TTC is defined as the relative distance divided by the relative velocity. It might result in estimation errors for maneuvers with non-zero relative accelerations. In order to improve the accuracy of TTC estimation, we consider the relative acceleration and extend the region of interest for FCWS from the main lane to adjacent lanes. If we assume constant relative acceleration within the sample time, the relative distance can be approximated using a second order polynomial. Recursive least square technique is employed to estimate associated coefficients. Variable forgetting factor adjusted using relative acceleration is proposed to enhance the approximation accuracies. Similar process is applied to estimate the coefficients of a second order polynomial for the relative polar angle. The estimated coefficients of the second order polynomial of the relative distance can be transformed into the relative distance, relative velocity, and relative acceleration for calculating TTC.
2014-03-24
Technical Paper
2014-01-2027
Adria Ferrer, Carlos Garcia Gutierrez
Abstract South East Asia is one of the regions with highest traffic-related fatality rates worldwide −18.5 fatalities per 100.000 inhabitants-. In response to that, governments of ASEAN countries are currently introducing new regulations, which will help to improve the road safety standards in the region. This paper reviews new safety regulations in force of following ASEAN countries: Singapore, Thailand, Malaysia, Indonesia, Vietnam and the Philippines. General safety trends promote the approach to international standards as well as the adoption of UNECE regulations. In fact, the 1958 agreement was signed by Thailand and Malaysia in 2006. Besides, Malaysia has gradually adopted fifty-three UNECE regulations so far and is currently considering the inclusion of twenty-four more. After the success of other NCAP organizations, the ASEAN NCAP assessment program was established in 2011. This program is powered by the Malaysian Institute of Road Safety Research (MIROS) and the Global New Car Assessment Program (GNCAP).
2014-03-19
Article
Ford is using a highly engineered lens with 16 precision optical surfaces and 80 facets in the upcoming 2015 F-150's headlamp to re-create as much as possible a daytime quality of light after the sun goes down. The automaker says no other light-duty pickup truck on the road today uses LED headlamps.
2014-03-18
Magazine
Alternative fuels face challenges With gasoline prices seeming to stabilize and fuel economy measures taking hold is there a compelling need for alternative fuels? Automotive engineers offer some surprising reasons why there is.
2014-03-11
Book
Timothy George Thoppil
Unwinding Electric Motors: Strategic Perspectives and Insights for Automotive Powertrain Applications provides an in-depth assessment of the most important technology, manufacturing, and supply chain aspects of the fast-paced world of electric motors. A joint effort that brings together the technology and product strategy experience of the P3 Group and the focused reach of SAE International, Unwinding Electric Motors: Strategic Perspectives and Insights for Automotive Powertrain Applications lends clarity combined with solid data to those interested in understanding the fundamental factors shaping this industry in the next five years. Authored by Timothy G. Thoppil, from the P3 Group, this market study draws on extensive industry experience and is supported by surveys and interviews with industry professionals from OEMs, Tier 1 suppliers, research institutions, and universities. Unwinding Electric Motors: Strategic Perspectives and Insights for Automotive Powertrain Applications offers reliable market intelligence and discernment to the technical and business professionals in search of valuable input to support good decision making.
2014-03-10
Article
Billing itself as the "first-ever open-source race team," Perrinn myTeam is inviting students, professional engineers, and others to contribute and share data for development of a possible sports car entry at Le Mans in 2015.
2014-03-10
Article
CD-adpaco fills the design testing void with multidisciplinary design exploration (MDX), a methodology for automatically testing designs from early in the concept stage.
2014-03-10
WIP Standard
AS5553B
This standard is for use by organizations that procure and/or integrate electronic parts and/or assemblies containing such items. The requirements of this standard are generic and intended to be applied/flowed down through the supply chain to all organizations that procure electronic parts and/or assemblies, regardless of type, size and product provided. The mitigation of fraudulent/counterfeit EEE parts in this standard is risk-based and will vary depending on the desired performance or reliability of the equipment/hardware.
2014-03-07
Article
The ishare urban concept vehicle by Applus IDIADA is designed as a demonstrator of the company’s vehicle-development capabilities.
2014-03-06
Article
AVL's Integrated and Open Development Platform highlighted at the SAE 2014 World Congress April 8-10 in Detroit.
2014-03-05
Article
Previously having been strictly a contract manufacturer for Westport Innovations, Delphi Automotive under a new agreement will co-develop with Westport new high-pressure natural-gas fuel injectors, the companies jointly announced March 3.
2014-03-05
Article
Formerly chief of hybrid and electric powertrain engineering, Nitz is now Executive Director, Global Transmissions and Electrification. His new role reflects the evolution of automotive transmission systems as their mechanical and electrical functionality converges.
2014-03-05
Magazine
Into the DEAP The Distributed Electrical Aerospace Propulsion project looks toward a future optimized integrated propulsion system that will allow cleaner, quieter, and more efficient performance to be incorporated into a radically innovative airframe that will feature enclosed electrically powered fans. Managing the deluge of data The model-based development (MBD) process has been a key enabler of technical advancement in the transportation industry; however, the MBD process leads to the generation of large volumes of data artifacts and work products. To maintain efficiency while continuously improving the quality of products, it is necessary to be able to manage this data in an efficient manner.
2014-03-04
Magazine
What's New at ConExpo/IFPE More new products and technologies that companies plan to showcase at this year's ConExpo-Con/Agg, which is co-located with the IFPE fluid-power event in Las Vegas from March 4-8, are previewed. Gearshift actuator dynamics in a dual clutch transmission The emergence of tougher environmental and fuel efficient legislations have triggered exploration and advance toward new and better vehicle transmission technologies. Software makes solid impact Programs are helping hydraulic systems do more while reducing operator workloads. Damping out booming noise NVH improvement techniques are gaining traction with the goal to improve the quality perception of off-highway equipment performance and operator comfort.
2014-02-26
Standard
J2403_201402
This SAE Recommended Practice is applicable to all E/E systems on MD and HD vehicles. The terms defined are largely focused on compression-ignited and spark-ignited engines. Specific applications of this document include diagnostic, service and repair manuals, bulletins and updates, training manuals, repair data bases, under-hood emission labels, and emission certification applications. This document focuses on diagnostic terms, definitions, abbreviations, and acronyms applicable to E/E systems. It also covers mechanical systems which require definition. Nothing in this document should be construed as prohibiting the introduction of a term, abbreviation, or acronym not covered by this document. The use and appropriate updating of this document is strongly encouraged. Certain terms have already been in common use and are readily understood by manufacturers and technicians, but do not follow the methodology of this document. To preserve this understanding, these terms were included and have been identified with the footnote (2), "previous usage," so they will not erroneously serve as a precedent in the construction of new names.
2014-02-25
Book
The Chinese Automotive Supplier Report looks at the economics of the automotive industry in China, particularly relating to the supply base. It provides an overview of the macroeconomic environment including vehicle sales, production, imports and exports. In addition, the report looks at OEMs' activity, relations with the supply base. This research utilizes IHS Automotive's Light-Vehicle Production Forecasts; the industry standard for automotive forecasting and analysis. The report also includes an appendix of 213 supplier profiles from China-based suppliers or the Chinese operations of global suppliers. These profiles provide relevant data on corporate strategy, investments, product offerings and contact information all built from SupplierBusiness research. Certain profiles also map out relevant automotive manufacturing and R&D locations for the supplier. Background to this report The Chinese car market experienced one of the most accelerated expansions ever recorded in the history of the automotive industry, having achieved a six-fold growth over the last decade.
2014-02-25
Book
This valuable resource lists all Aerospace Standards (AS), Aerospace Recommended Practices (ARP), Aerospace Information Reports (AIR), and Aerospace Resource Documents (ARD) published by SAE. Each listing includes title, subject, document number, key words, new and revised documents, and DODISS-adopted documents. AMS Index - Now Available!
2014-02-24
Book
Jorge Segers
Racecar data acquisition used to be limited to well-funded teams in high-profile championships. Today, the cost of electronics has decreased dramatically, making them available to everyone. But the cost of any data acquisition system is a waste of money if the recorded data is not interpreted correctly. This book, updated from the best-selling 2008 edition, contains techniques for analyzing data recorded by any vehicle's data acquisition system. It details how to measure the performance of the vehicle and driver, what can be learned from it, and how this information can be used to advantage next time the vehicle hits the track. Such information is invaluable to racing engineers and managers, race teams, and racing data analysts in all motorsports. Whether measuring the performance of a Formula One racecar or that of a road-legal street car on the local drag strip, the dynamics of vehicles and their drivers remain the same. Identical analysis techniques apply. Some race series have restricted data logging to decrease the team’s running budgets.
2014-02-21
Standard
J1879_201402
This document will primarily address intrinsic reliability of electronic components for use in automotive electronics. Where practical, methods of extrinsic reliability detection and prevention will also be addressed. The current handbook primarily focuses on integrated circuit subjects, but can easily be adapted for use in discrete or passive device qualification with the generation of a list of failure mechanisms relevant to those components. Semiconductor device qualification is the main scope of the current handbook. Other procedures addressing extrinsic defects are particularly mentioned in the monitoring chapter. Striving for the target of Zero Defects in component manufacturing and product use it is strongly recommended to apply this handbook. If it gets adopted as a standard, the term “shall” will represent a binding requirement. This document does not relieve the supplier of the responsibility to assure that a product meets the complete set of its requirements.
2014-02-18
Book
This new addition to the Supplying the OEMs series of reports takes a look at Swedish premium manufacturer Volvo. The report examines the company’s product and platform strategy, including the upcoming SPA and CMA platforms. The report also goes inside the Volvo’s purchasing strategy, including an in-depth interview with Lars Wrebo, Senior Vice President of Purchasing and Manufacturing at Volvo. The report also looks at the company’s current manufacturing sites based in Sweden, its future production strategy for China, the relationship with parent company Geely, and looks at OEM-supplier relations. The report is backed up with IHS Automotive production forecasts for the Volvo brand; the industry standard for automotive forecasting and analysis. Volvo is one of the most iconic and best-known Swedish brands. Although a relatively small company, assembling fewer than 500,000 cars per year in recent times, it is arguably one of the best-known automotive companies world-wide. Its widespread recognition derives from its reputation for leading-edge safety technology and environmental compliance.
2014-02-18
Magazine
Synergistic opportunities abound The horizontal deployment of technologies and knowledge evident in mass-market personal mobility needs to be scaled up in magnitude and performance for commercial vehicles. Q&A with Dr. V Sumantran The Hinduja Group's Executive Vice Chairman talks about his company's award-winning vehicle and related commercial-vehicle topics. The future of electric and hybrid vehicles in India Technical and political challenges alike have held back the electric and hybrid market, but there are signs of hope.
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