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Viewing 121 to 150 of 13193
2015-04-14
Journal Article
2015-01-0468
Mingxian Wang, Wei Chen, Yan Fu, Yong Yang
Abstract As the world's largest auto producer and consumer, China is both the most promising and complex market given the country's rapid economic growth, huge population, and many regional and segment preference differences. This research is aimed at developing data-driven demand models for customer preference analysis and prediction under a competitive market environment. Regional analysis is first used to understand the impact of geographical factors on customer preference. After a comprehensive data exploration, a customer-level mixed logit model is built to shed light on fast-growing vehicle segments in the Chinese auto market. By combining the data of vehicle purchase, consideration, and past choice, cross-shopping behaviors and brand influence are explicitly modeled in addition to the impact of customer demographics, usage behaviors, and attributes of vehicles.
2015-04-14
Journal Article
2015-01-0470
Joanna Rakowska, Amir Chator, Bruno Barthelemy, Michael Lee, Shawn Morgans, Jeffrey Laya, Gregory Zinn, Ching-Hung Chuang, Sreekanth Reddy Gondipalle
Abstract Designing a vehicle body involves meeting numerous performance requirements related to different attributes such as NVH, Durability, Safety, and others. Multi-Disciplinary Optimization (MDO) is an efficient way to develop a design that optimizes vehicle performance while minimizing the weight. Since a body design evolves in course of the product development cycle, it is essential to repeat the MDO process several times as a design matures and more accurate data become available. This paper presents a real life application of the MDO process to reduce weight while optimizing performance over the design cycle of the 2015 Mustang. The paper discusses the timing and results of the applied Multi-Disciplinary Optimization process. The attributes considered during optimization include Safety, Durability and Body NVH.
2015-04-14
Journal Article
2015-01-0500
Emilio Larrodé, Alberto Torne, Alberto Fraile
Abstract The analysis and decision making on design, behavior and use of a prototype electric vehicle is the main focus has been pursued in this paper. It was modeled a prototype electric vehicle, called Gorila EV, as from the software tool Adams/Car. The dimensional parameters needed to create the model were obtained by measurements, calculations and approximations. Subsequently, it was determined a route to be travelled by the vehicle and proceeded to simulation of the vehicle on that route. Different modifications in the model were performed to compare their results with the original model through simulation in Adams/Car. These changes ranged from a simple change in the mass of the chassis until a change in the type of vehicle traction. After made the changes and simulations, it carried out the analysis of the most remarkable results. These results were studied subsystem by subsystem, beginning with the wheels, to suspensions and engine until vehicle chassis.
2015-04-14
Technical Paper
2015-01-1390
Venk Kandadai, Helen Loeb, Guyrandy Jean-Gilles, Catherine McDonald, Andrew Winston, Thomas Seacrist, Flaura Winston
Abstract Driving simulators offer a safe alternative to on-road driving for the evaluation of driving performance. Standardized procedures for providing individualized feedback on driving performance are not readily available. The aim of this paper is to describe a methodology for developing standardized procedures that provide individualized feedback (“LiveMetrics”) from a simulated driving assessment used to measure driving performance. A preliminary evaluation is presented to test the performance of the LiveMetrics methodology. Three key performance indicators are used to evaluate the performance and utility of the method in the context of the preliminary evaluation. The results from the preliminary evaluation suggest abilities to customize reporting features for feedback and integrate these into existing driver training and education programs.
2015-04-14
Technical Paper
2015-01-1255
Michael Pontoppidan, Jose G. C. Baeta
Abstract The paper presents a layout of a highly boosted Ethanol Direct Injected (EDI) engine with extreme downsizing, which represents a powerful means to reduce emissions at reduced production costs. The substitution of high-displacement engines (2.4- or 3.0-liter) by a downsized turbocharged EDI-engine is studied. The paper describes the detailed layout of all engine hardware and in particular, the cylinder head structure including the optimized intake and exhaust manifolds as well as implemented DI injectors. The paper continues with a presentation of the experimental data obtained at the engine test rig. The paper concludes presenting a series of experimental data obtained with the downsized engine mounted in a car as a replacement for its original high-displacement engine.
2015-04-14
Journal Article
2015-01-0783
Raphael Gukelberger, Jess Gingrich, Terrence Alger, Steven Almaraz, Bradley Denton
Abstract The ongoing pursuit of improved engine efficiency and emissions are driving gasoline low-pressure loop EGR systems into production around the globe. To minimize inevitable downsides of cooled EGR while maintaining its advantages, the Dedicated EGR (D-EGR®) engine was developed. The core of the D-EGR engine development focused on a unique concept that combines the efficiency improvements associated with recirculated exhaust gas and the efficiency improvements associated with fuel reformation. To outline the differences of the new engine concept with a conventional low-pressure loop (LPL) EGR setup, a turbocharged 2.0 L PFI engine was modified to operate in both modes and also compared to the baseline. The first part of the cooled EGR engine concept comparison investigates efficiency, emissions, combustion stability, and robustness at throttled part load conditions.
2015-04-14
Journal Article
2015-01-1103
Taiki Ando, Tooru Yagasaki, Shuji Ichijo, Kyohei Sakagami, Soichiro Sumida
Abstract Pulley thrust control, changes in the trajectory of the belt as it winds around the pulleys, and the amount of friction transmission were focused on in order to reduce transmission loss and increase the transmission efficiency of CVT. In the case of pulley thrust control, making use of the linear relationship between the rotary speed fluctuation transfer characteristic and the torque transmission capacity between the pulleys and the belt, it was possible to reduce the excess safety factor of the torque transmission volume. Due to pulley tilt, the trajectory of the belt displays deviations with the theoretical geometrical winding radius. The structure of the pulleys was modified in order to reduce this deviation and increase transmission efficiency. Optimization of the additives in the CVT fluid increased the coefficient of friction, decreasing pulley thrust and increasing transmission efficiency.
2015-04-14
Journal Article
2015-01-1383
Andrew Blum, Richard Thomas Long
Abstract Fires involving cars, trucks, and other highway vehicles are a common concern for emergency responders. In 2013 alone, there were approximately 188,000 highway vehicle fires. Fire Service personnel are accustomed to responding to conventional vehicle (i.e., internal combustion engine [ICE]) fires, and generally receive training on the hazards associated with those vehicles and their subsystems. However, in light of the recent proliferation of electric drive vehicles (EDVs), a key question for emergency responders is, “what is different with EDVs and what tactical adjustments are required when responding to EDV fires?” The overall goal of this research program was to develop the technical basis for best practices for emergency response procedures for EDV battery incidents, with consideration for suppression methods and agents, personal protective equipment (PPE), and clean-up/overhaul operations.
2015-04-14
Journal Article
2015-01-1526
Yasuyuki Onishi, Thomas Ramsay, Timothy Juan, James McKillen
Abstract A sports car exhibits many challenges from an aerodynamic point of view: drag that limits top speed, lift - or down force - and balance that affects handling, brake cooling and insuring that the heat exchangers have enough air flowing through them under several vehicle speeds and ambient conditions. All of which must be balanced with a sports car styling and esthetic. Since this sports car applies two electric motors to drive front axle and a high-rev V6 turbo charged engine in series with a 9-speed double-clutch transmission and one electric motor to drive rear axle, additional cooling was required, yielding a total of ten air cooled-heat exchangers. It is also a challenge to introduce cooling air into the rear engine room to protect the car under severe thermal conditions. This paper focuses on the cooling and heat resistance concept.
2015-04-14
Journal Article
2015-01-1272
Jeffrey Jocsak, David White, Cedric Armand, Richard S. Davis
Abstract General Motors has developed an all-new Ecotec 1.5 L range extender engine for use in the 2016 next generation Voltec propulsion system. This engine is part of a new Ecotec family of small displacement gasoline engines introduced in the 2015 model year. Major enhancements over the range extender engine in the current generation Voltec propulsion system include the adoption of direct injection (DI), cooled external exhaust gas recirculation (EGR), and a high 12.5:1 geometric compression ratio (CR). Additional enhancements include the adoption of high-authority phasers on both the intake and exhaust camshafts, and an integrated exhaust manifold (IEM). The combination of DI with cooled EGR has enabled significant thermal efficiency gains over the 1.4 L range extender engine in the current generation Voltec propulsion system at high engine loads.
2015-04-13
WIP Standard
AS5726B
This standard only defines interconnect, electrical and logical (functional) requirements for the interface between a Micro Munition and the Host. The physical and mechanical interface between the Micro Munition and Host is undefined. Individual programs will define the relevant requirements for physical and mechanical interfaces in the Interface Control Document (ICD) or system specifications. It is acknowledged that this does not guarantee full interoperability of Interface for Micro Munitions (IMM) interfaces until further standardization is achieved.
2015-04-10
Book
This edition breaks down specific areas of activity into easily readable and searchable content. The section covering the top 10 best-selling models across the VW Group are separated out into individual models, including the latest sales data comparisons with segment competitors. Platform usage is broken down by type, including introduction dates, material structure, model sharing and forecast length of use – this further includes in-depth coverage of the new MQB modular system. VW’s global production footprint is analyzed by country. In other key areas of the report, there is an in-depth review of the VW Group Purchasing strategy, with key information about Regional Sourcing Offices. This is followed by details covering supplier selection, including localization strategies and global sourcing. Pricing and technology strategies are also reviewed, while there is a full report on produced part quality management strategies based on internal VW documentation.
2015-04-09
Article
Honda’s next-generation Civic will debut a sporty new design language, more efficient and spirited powertrains—and serve as the lead application for Honda’s new Global Compact platform that will also underpin the next-generation Accord as well as the HR-V crossover.
2015-04-09
Standard
J1538_201504
The terms included in the Glossary are general in nature and may not apply to all manufacturers' systems. All terms in Section 3 apply to automotive inflatable restraint systems in general which are initiated by an electric or mechanical stimulus upon receipt of a signal from a sensor. These terms are intended to reflect existing designs and the Glossary will be updated as information on other types of systems becomes available. Appendix A is included to identify terminology that is no longer in common use or specifically applicable to inflatable restraint systems, but was published in the December 2001 version of SAE J1538.
2015-04-07
Magazine
GM's CTO driving new paths to technology leadership 'We're making actual production commitments regarding our advanced-technology strategy, rather than just talking about it,' says GM's CTO Jon Lauckner. 'We're absolutely going to be among the leaders, if not the leader, in these areas.' Aluminum prepares for its next big leap Ford's F-Series blockbuster was just the beginning. New micromills now in pilot phase aim to bring vastly stronger and more formable light-alloy materials at higher capacity, says Alcoa's Mike Murphy. Slick solutions for friction reduction From new lubricants to 'smart' oil pumps and clever bearing technologies, engine designers are attacking every potential source of spin losses and internal friction in the quest for more mechanical work out of less fuel. Next-gen NSX: a twin-turbo, multi-material Ferrari-fighter The production NSX made its much-awaited global debut at NAIAS in January.
2015-04-06
WIP Standard
AS6081A
This SAE Aerospace Standard standardizes practices to: a. identify reliable sources to procure parts, b. assess and mitigate risk of distributing fraudulent/counterfeit parts, c. control suspect or confirmed fraudulent/counterfeit parts, d. and report suspect and confirmed fraudulent/counterfeit parts to other potential users and Authority Having Jurisdiction.
2015-04-01
Magazine
Deep thinking about deep space NASA is mining the rich fields of knowledge and creativity in the minds of university students to improve living and working conditions in space. Rise of the underdogs Problem-plagued effort last year spurs Baja SAE team from VIT University of India to overhaul itself and its car. Materials, data-aq packages among choices touted in Collegiate Cup contest Central Michigan's Baja team, which did some impressive materials analyses, takes home the SAE Mid-Michigan Section's trophy as part of that professional group's Engineers Week activities. Toyota looks for more from college students than high GPA "Those that participate in an SAE related-activity display passion for the automotive industry, and these candidates are ideal for our organization."
2015-04-01
Book
Honda's April 2015 R&D Technical Review features cutting-edge developments and new ways of solving engineering problems from Honda's worldwide R&D teams. This edition brings 17 technical papers covering: • New motorcycle design and styling • Styling design of new crossover VEZEL • Development of inverter generator w/ fuel injector engine • Development of UNI-CUB • Synthesis of facet-controlled PtNi nanoparticles and evaluation of performance in PEM fuel cell • Prediction method for vibration transmission of hydraulic engine mount • Study of human dynamic analysis relating to handling and stability fo driving
2015-03-30
Technical Paper
2015-01-0094
Supakit Rooppakhun, Pornporm Boonporm, Worawat Puangcha-um
Abstract In this study, the method of analyzing the thin-wall crashing box of impact attenuator for student formula is proposed by the means of simulation and validation following Formula Society of Automotive Engineers-SAE rules. The analysis was performed based on computerized simulation software for calculated the absorption capacity of the simple and multiple cell of thin-walled tubes. The effect of thin-wall thickness consisted of 1.2 mm, 1.6 mm and 2.0 mm was also evaluated. The simulation results as energy absorption, crashing force efficiency, and absorbed energy per unit mass were identified among nine patterns. According to the results, the increase of interior cell number and the wall thickness contribute the absorbed energy ability. However, the increment of wall thickness lead to the increase of crashing force magnitude. Regarding the kinetic energy, a 2×2 multiple cell box with the thickness of 2 mm is designated for construction and verify.
2015-03-27
Standard
J2129_201503
This SAE Information Report lists the method which outside sources will follow when submitting documents for origination or review by the SAE CONAG Council.
2015-03-27
Standard
J1254_201503
This SAE Standard includes names of major components and parts peculiar to this type of machine. Illustrations used here are not intended to include all existing commercial machines or be exactly descriptive of any particular machine. They have been provided to describe the principles to be used in applying this document.
2015-03-25
Magazine
Bringing it all together Ian Adcock catches up with GKN's newly appointed president, Group Technology, Rob Rickell. Graphene Supreme Ian Adcock discovers what role graphene is likely to play in the vehicles of tomorrow. What lies beneath? Automotive Design looks into chassis developments that are designed to ensure local preferences are catered for globally.
2015-03-25
Book
North America was the world’s second largest automotive market by sales in 2014 with just over 19.4 million units sold, versus 23 million in China and 18.2 million units in Europe. The North American market and, in particular, the US one which accounts for about 80% of the regional sales, approaches the 19-million unit mark under different underlying fundamentals. Significant chunks of excess capacity have been cut at several automotive plants in North America, leading to the end of unhealthy over-discounting in order to secure line saturation and reduce imbalances in inventories.
2015-03-24
WIP Standard
J3092
The purpose of this document is to provide information and guidelines for use by automotive designers, test engineers and policymakers with…
2015-03-12
Standard
AS9016A
The aviation, space, and defense industries rely on the development and manufacture of complex products comprised of multiple systems, subsystems, and components each designed by individual designers (design activities) at various levels within the supply chain. Each design activity controls various aspects of the configuration and specifications related to the product. When a change to design information is requested or required, the change has to be evaluated against the impacts to the higher-level system. Proposed changes to design information that the design activity identifies to be minor and have no effect on their product requirements or specifications have the potential to be concurrently implemented and approved, where authorized to do so. Changes that affect customer mandated requirements or specifications must be approved prior to implementation.
2015-03-11
Article
Collaborative projects between OEMs can be surprising, as evidenced by the Daimler and Renault-Nissan link and its latest A-segment products — said to be the first of more joint developments.
2015-03-10
Technical Paper
2015-01-0073
Hayden Charles Smith, Sam Paterson, Clara Mazzone, Sammy Diasinos, Graham Doig
Abstract The Sunswift Solar Car project has been running at UNSW Australia in Sydney for 20 years as of 2015. It is an entirely student-run endeavour which revolves around the design and development of a solar/electric vehicle nominally designed to compete in the World Solar Challenge rally from Darwin to Adelaide every 2 years. The student cohort is drawn from a range of schools, disciplines and backgrounds, and the team has been increasingly successful and high-profile particularly in its second decade. The excellent level of hands-on training that the project provides to students is not rewarded with academic credit yet many of the alumni credit the project with launching their careers and ambitions. The team's world record-breaking latest vehicle, eVe, is the fifth constructed and presents a radical departure from previous cars in that it carries a passenger in a conventional layout and is based around a road-going sports car.
2015-03-05
Book
ASEAN light vehicle output increased 6% year on year in January 2015, with 352,928 units produced. Full-year 2015 production is expected to reach 4.25 million units, up 10%. Production in Thailand rose 8.7% y/y in January 2015. Indonesian production contracted slightly in January 2015, down 1%. Nonetheless, production recovered from the weak output in December 2014, thanks to the government announcing lower subsidized fuel prices in mid-January. The growth of automotive production in the ASEAN region has in tandem spurred the growth of an automotive supplier industry. With very few local automotive suppliers that could initially supply the parts and the quality required by international carmakers, international suppliers had to follow suit and supply components locally. This report provides a detailed look at the ASEAN Automotive & Supplier Market, focusing on Indonesia, Malaysia, Philippines, Thailand and Vietnam.
2015-03-05
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!
2015-02-26
WIP Standard
AS6171/1
This document describes an evaluation method which measures the effectiveness of a specified test plan used to screen for counterfeit parts. The method includes the determination of the types of defects detected using a specified test plan along with the related counterfeit type coverage. The output of this evaluation will produce the counterfeit defect coverage (CDC), the not-covered defects (NCD), the under-covered defects (UCD), and the counterfeit type coverage (CTC). This information will be supplied to the test laboratory’s customer in both the test report and the Certificate of Quality Conformance. This evaluation method does not address the effectiveness of detecting tampered type devices.
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