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Viewing 151 to 180 of 13422
2016-04-05
Technical Paper
2016-01-1017
Mitsutaka Jono, Masayuki Taguchi, Toshimitsu Shonohara, Shigeru Narihiro
Abstract It is important to take action regarding environmental issues on a global scale, and automakers are adding downsized turbocharged engines to their line-ups as a means of reducing CO2 emissions, particularly in Europe. Honda has recently announced a next-generation powertrain series that realizes a good balance between environmental performance and driving pleasure. As part of this series, the company has developed a downsized and turbocharged 2.0L gasoline direct injection engine. This is a high-powered sports car engine positioned in the European “hot hatch” category. The development balanced engine power with good environmental performance.
2016-04-05
Technical Paper
2016-01-1020
Yusuke Wada, Koji Nakano, Kei Mochizuki, Ryuichi Hata
Abstract A 1.5 L downsizing turbocharged engine was developed to achieve both driving and environmental performance. The engine is intended to replace 1.8 - 2.4 L class NA engines. In downsizing turbocharged engines, mixture homogeneity is important for suppressing knocking and emission reduction. Particularly under high load, creating rapid combustion and a homogeneous mixture are key technologies. The authors used a long-stroke direct injection engine, which has outstanding rapid combustion and thermal efficiency, as a base engine meeting these requirements. They combined this with a high-tumble port and shallow-dish piston intended to support tumble flow. The combination enhanced flow within the cylinder. The combustion system was built to include a sodium-filled exhaust valve to reduce knocking and a multi-hole injector (six holes) for mixture homogeneity and to reduce the fuel wall wetting.
2016-04-05
Journal Article
2016-01-1598
Frank Meinert, Kristian Johannessen, Fernando Saito, Bongha Song, Jewel Barlow, David Burton, Taehwan Cho, Luis Fernando Gouveia de Moraes
Abstract Wind tunnel testing of reduced-scale models is a valuable tool for aerodynamic development during the early stages of a new vehicle program, when basic design themes are being evaluated. Both full-and reduced-scale testing have been conducted for many years at the General Motors Aerodynamics Laboratory (GMAL), but with increased emphasis on aerodynamic drag reduction, it was necessary to identify additional facilities to provide increased test capacity. With vehicle development distributed among engineering teams around the world, it was also necessary to identify facilities local to those teams, to support their work. This paper describes a cooperative effort to determine the correlation among five wind tunnels: GMAL, the Glenn L.
2016-04-05
Technical Paper
2016-01-0936
Anoop Reghunathan Nair, Brett Schubring, Kiran Premchand, Andrew Brocker, Peter Croswell, Craig DiMaggio, Homayoun Ahari, Jeffrey Wuttke, Michael Zammit, Michael Andrew Smith
New Particulate Matter (PM) and Particulate Number (PN) regulations throughout the world have created a need for aftertreatment solutions that include particulate control as an option to comply with the legislation. However, limitations in other criteria emissions cannot be sacrificed to accomplish the reduction of PM/PN. For this work, three-way washcoat catalyzed wall-flow Gasoline Particulate Filters (GPF) and similarly catalyzed flow-through catalysts of common defined volume were tested. Their catalytic performance was determined by measuring NOx, CO and HC conversion efficiencies and CO2 levels over the U.S. Federal Test Procedure 75 (FTP-75) and US06 Supplemental Federal Test Procedure (US06) cycles. Analysis of the impact on CO2 emissions was also evaluated in relation to backpressure from 1-D modeling analysis. All exhaust systems used the same loading and ratio of Platinum Group Metals (PGM), but employed different cell structures in their substrates.
2016-04-05
Journal Article
2016-01-0961
Satish Narayanan Ramachandran, Gillis Hommen, Paul Mentink, Xander Seykens, Frank Willems, Frank Kupper
Abstract Heavy-duty diesel engines are used in a wide range of applications. For varying operating environments, the engine and aftertreatment system must comply with the real-world emission legislation limits. Simultaneously, minimal fuel consumption and good drivability are crucial for economic competitiveness and usability. Meeting these requirements takes substantial development and calibration effort, and complying with regulations results in a trade-off between emissions and fuel consumption. TNO's Integrated Emission Management (IEM) strategy finds online, the cost-optimal point in this trade-off and is able to deal with variations in operating conditions, while complying with legislation limits. Based on the actual state of the engine and aftertreatment system, an optimal engine operating point is computed using a model-based optimal-control algorithm.
2016-04-05
Journal Article
2016-01-0982
Philip Lawson, John Houldcroft, Andrew Neil, Andrea Balcombe, Richard Osborne, Antonio Ciriello, Wilhelm Graupner
Abstract A recent trend in powertrain development organisations has been to apply processes historically associated with manufacturing. The aim is to capitalise on the resulting productivity gains to contain the increasing test demand necessary to develop current and future product. Significant obstacles to the implementation of manufacturing derived methods include the lack of clarity of the engineering test requirements and existing working practices in the product development environment. The System Optimisation Approach has been presented in previous work as a potential solution [1]. As an extension, this paper introduces a new concept closely related to the established manufacturing principle of Process Capability (Cp). Application of the resulting method quantifies the test facility’s capability to provide a test result subject to a specified statistical confidence within a certain number of test repeats.
2016-04-05
Technical Paper
2016-01-0692
Yasushi Yoshihara, Koichi Nakata, Daishi Takahashi, Tetsuo Omura, Atsuharu Ota
Abstract Improving vehicle fuel economy is a central part of efforts toward achieving a sustainable society. An effective way of accomplishing this is to enhance the engine thermal efficiency. Mitigating knock and reducing engine heat loss are important aspects of enhancing the thermal efficiency. Cooled exhaust gas recirculation (EGR) is regarded as a key technology because it is capable of achieving both of these objectives. For this reason, it has been adopted in a wide range of both hybrid vehicles and conventional vehicles in recent years. In EGR equipped engines, fast combustion is regarded as one of the most important technologies, since it realizes higher EGR ratio. To create fast combustion, generation of strong in-cylinder turbulence is necessary. Strong in-cylinder turbulence is achieved through swirl, squish, and tumble flows. Specifically high tumble flow has been adopted on a number of new engines because of the intense effect of promoting in-cylinder turbulence.
2016-04-05
WIP Standard
AS1814E

This list of terms, with accompanying photomicrographs where appropriate, is intended as a guide for use in the preparation of material specifications.

The terms and photomicrographs are intended to present definitions only; they do not define either acceptance limits or minimum standards of quality.

Listings are not grouped by specific alloys or conditions and represent the typical microstructures wherever they occur.

Etchants used for the microstructures shown are stated. Where "Krolls" is stated, the composition is 10 ml HF, 30 ml HNO3, and 50 ml water (H2O).

Other common etchants are listed in ASTM E407, Microetching Metals and Alloys.

2016-04-05
Journal Article
2016-01-1169
Brendan Conlon, Mindy Barth, Charles Hua, Clifford Lyons, Dan Nguy, Margaret Palardy
Abstract GM has developed an all-new gasoline-electric hybrid powertrain for the model year 2016 Chevrolet Malibu Hybrid vehicle, which was designed to achieve excellent fuel economy, performance, and drive quality. The powertrain shares the transmission architecture with the 2016 Chevrolet Volt extended range electric vehicle, but includes changes to optimize the system for engine driven charge sustaining operation in the range of conditions represented by the US EPA 5 cycle fuel economy tests. In this paper, we describe the Malibu Hybrid propulsion system features and components, including the battery pack, transaxle, electric motors and power electronics, engine, and thermal system. The modifications between the Volt and Malibu Hybrid propulsion systems are discussed and explained as resulting from the differences between the primarily electric and gasoline powered applications.
2016-04-05
Technical Paper
2016-01-0667
Kookjin Hwang, Iljoong Hwang, Hwangbok Lee, Hyunil Park, Hoyeon Choi, Kwanwoo Lee, Wootae Kim, Heungchul Kim, Bonghoon Han, Jongsub Lee, Bosung Shin, Dongsuk Chae
Abstract Hyundai/Kia Motor Company will introduce new Kappa 1.6L GDI engine dedicated for hybrid vehicles, starting production for Korean market in the early 2016. It has achieved the challenging level of 40% maximum thermal efficiency as a gasoline engine. Even though it has the highest fuel efficiency, it can generate sufficient power to provide vehicle's dynamic driving performance. The new Kappa 1.6L GDI engine has been developed focusing on the fuel efficiency. To maximize fuel efficiency, compact combustion chamber is designed with 1.35 stroke-bore ratio. And other key technologies such as Atkinson cycle with high compression ratio, cooled EGR system with high energy ignition coil and high tumble intake ports are applied. The knock has been suppressed significantly to improve fuel efficiency by split cooling system with two thermostats and block insert, the piston cooling jet and the sodium-filled exhaust valve.
2016-04-05
Journal Article
2016-01-0693
Daishi Takahashi, Koichi Nakata, Yasushi Yoshihara, Tetsuo Omura
Abstract Improving vehicle fuel economy is a central part of efforts toward achieving a sustainable society, and an effective way of accomplishing this aim is to enhance the engine thermal efficiency. Measures to mitigate knocking and reduce engine cooling heat loss are important aspects of enhancing the engine thermal efficiency. Cooled exhaust gas recirculation (EGR) is regarded as a key technology because it is capable of achieving both of these objectives. For this reason, it has been adopted in a wide range of both hybrid vehicles and conventional vehicles in recent years. Cooled EGR has the potential to achieve further lower fuel consumption if the EGR ratio can be increased. Fast combustion is an important and effective way for expanding the EGR ratio. The engine combustion enhancement can be categorized into measures to improve ignition characteristics and methods to promote flame propagation.
2016-04-05
Journal Article
2016-01-1153
Jinming Liu, Mohammad Anwar, Peter Chiang, Shawn Hawkins, Youngsoo Jeong, Faizul Momen, Stephen Poulos, Seunghan Song
Abstract Building on the experience of the Chevrolet Spark EV battery electric vehicle, General Motors (GM) has developed a propulsion system with increased capability for its next generation Chevrolet Bolt EV. It propels a new larger electric vehicle with significantly greater electric driving range. Through extensive analysis the primary propulsion system components, which include the drive unit, traction electric motor, power electronics, energy storage, and on-board charging module, were optimized individually and as an integrated system to deliver improvements in propulsion system energy, power, torque and efficiency. The results deliver outstanding EV range and fun-to-drive acceleration performance.
2016-04-05
Technical Paper
2016-01-0127
Agish George, William Taylor, Jody Nelson
Abstract One of the key premises of the ISO 26262 functional safety standard is the development of an appropriate Technical Safety Concept for the item under development. This is specified in detail in Part 4 of the standard - Product development at the system level. The Technical safety requirements and the technical safety concept form the basis for deriving the hardware and software safety requirements that are then used by engineering teams for developing a safe product. Just like any other form of product development, making multiple revisions of the requirements are highly undesirable. This is primarily due to cost increases, chances of having inconsistencies within work products and its impact on the overall project schedule. Good technical safety requirements are in fact the foundation for an effective functional safety implementation.
2016-04-05
Standard
EIA649-2
This Standard applies to all products produced by NASA Headquarters and NASA Centers, including Component Facilities and Technical and Service Support Centers. This Standard may also apply to the Jet Propulsion Laboratory and suppliers/service providers to the extent specified in their agreements with NASA. This Standard may be cited in the CM requirements of NASA Headquarters, NASA Centers, Programs, Projects, and Supplier agreements.
2016-04-01
Standard
J511_201604
This pneumatic spring terminology has been developed to assist engineers and designers in the preparation of specifications and descriptive material relating to pneumatic springs and their components. It does not include gas supply or control systems.
2016-04-01
Magazine
CMU goes full futuristic A student team from Carnegie Mellon University offers its take on a proposed new mode of transportation involving tubes and pods. Three CDS teams win MOMENTUM design awards Teams from British Columbia Institute of Technology, University of Idaho and Pakistan Navy Engineering College win competition for best description of an innovation for their 2016 SAE Collegiate Design Series vehicle entry. These pro tips can earn your CDS team point Members of SAE International's Collegiate Design Series staff offer 10 tips to help teams fully realize their potential at competition.
2016-04-01
Book
Honda's April 2016 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 23 technical papers and provides featured topics that include: • Development of New Fuel Cell Vehicle CLARITY FUEL CELL • Development of RC213V-S • Introduction of Heat Exchanger Production Technique for Stirling Engine Using Additive Manufacturing
2016-04-01
Magazine
Electronic Warfare Next Generation FPGAs for Electronic Warfare Systems Materials: Composites Managing the Impact of Nanomaterials in Aerospace Manufacturing Aerospace Materials/Manufacturing Turbine Flow Meters Alternative Power Sources Designing a Power Generation System for a More-Electric Aircraft
2016-03-31
Standard
J1939DA_201603
This document is intended to supplement the J1939 documents by offering the J1939 information in a form that can be sorted and search for easier use. The J1939 Digital Annex, introduced in August 2013, offers key J1939 technical data in an Electronic Spreadsheet that can be easily searched, sorted, and adapted to other formats. J1939DA contains all of the SPNs (parameters), PGNs (messages), and other J1939 data previously published in the SAE J1939 top level document. J1939DA also contains all of the SLOTs, Manufacturer ID Codes, NAME Functions, and Preferred Addresses previously published in the SAE J1939 top level and the J1939-71 document. J1939DA contains the complete technical details for all of the SPNs and PGNs previously published in the SAE J1939-71 document. It also includes the supporting descriptions and figures previously published in the SAE J1939-71 document.
2016-03-30
Standard
J2735SET_201603
This Abstract Syntax Notation (ASN.1) File is the precise source code used for SAE International Standard J2735. As part of an international treaty, all US ITS standards are expressed in "ASN.1 syntax". ASN.1 Syntax is used to define the messages or "ASN specifications". Using the ASN.1 specification, a compiler tool produces the ASN library which will then be used to produce encodings (The J2735 message set uses UPER encoding). The library is a set of many separate files that collectively implement the encoding and decoding of the standard. The library is then used by any application (along with the additional logic of that application) to manage the messages. The chosen ASN tool is used to produce a new copy of the library when changes are made and it is then linked to the final application being developed. The ASN library manages many of the details associated with ASN syntax, allowing for subtle manipulation to make the best advantage of the encoding style.
2016-03-30
Standard
J2735_201603
This SAE Standard specifies a message set, and its data frames and data elements, specifically for use by applications intended to utilize the 5.9 GHz Dedicated Short Range Communications for Wireless Access in Vehicular Environments (DSRC/WAVE, referenced in this document simply as "DSRC") communications systems. Although the scope of this Standard is focused on DSRC, this message set, and its data frames and data elements, have been designed, to the extent possible, to be of potential use for applications that may be deployed in conjunction with other wireless communications technologies as well. This Standard therefore specifies the definitive message structure and provides sufficient background information to allow readers to properly interpret the message definitions from the point of view of an application developer implementing the messages according to the DSRC Standards.
2016-03-30
Standard
J2735ASN_201603
This Abstract Syntax Notation (ASN.1) File is the precise source code used for SAE International Standard J2735. As part of an international treaty, all US ITS standards are expressed in "ASN.1 syntax". ASN.1 Syntax is used to define the messages or "ASN specifications". Using the ASN.1 specification, a compiler tool produces the ASN library which will then be used to produce encodings (The J2735 message set uses UPER encoding). The library is a set of many separate files that collectively implement the encoding and decoding of the standard. The library is then used by any application (along with the additional logic of that application) to manage the messages. The chosen ASN tool is used to produce a new copy of the library when changes are made and it is then linked to the final application being developed. The ASN library manages many of the details associated with ASN syntax, allowing for subtle manipulation to make the best advantage of the encoding style.
2016-03-29
Standard
AS9117
This standard specifies requirements for DPRV to establish common product/service requirements for use at all levels of the supply chain. This standard shall apply when an organization elects to delegate product release verification by contractual flow down to their supplier (reference 9100 and 9110 standards); to perform product acceptance on their behalf. The delegating organization shall use this standard as the baseline for establishing a DPRV process, although they may include additional contract requirements to meet their specific needs.
2016-03-27
Article
Self-driving car project CEO John Krafcik discussed Google's work underway toward fully autonomous vehicles, at a recent NY forum. First likely market: the elderly and impaired.
2016-03-24
Article
In this Q&A, Toyota Technical Center President Seiya Nakao discusses future mobility development, technical innovation, Toyota's recent reorganization, and the ever-changing automotive engineering profession.
2016-03-12
Article
Cloud service providers are playing an increasingly growing role in the drive to provide more features, functions and services. Companies are working on strategies that provide "cloud" access without compromising safety.
2016-03-12
Article
Jeep Design is taking seven new concept vehicles, including two interesting pickups, to the Utah off-road festival where the hardest-core Jeep enthusiasts gather annually.
2016-03-04
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!
2016-03-03
WIP Standard
EIA649_1A
This document is used for placing Configuration Management Requirements on Defense Contracts after being tailored by the Acquirer. When effectively and consistently applied, Configuration Management (CM) provides a positive impact on product quality, cost, and schedule. The planning and execution of Configuration Management (CM) is an essential part of the product development and life cycle management process. It provides control of all configuration documentation, physical parts and software representing or comprising the product. Configuration Management's overarching goal is to establish and maintain consistency of a product's functional and physical attributes with its requirements, design and operational information throughout its life cycle. When effectively and consistently applied, Configuration Management (CM) provides a positive impact on product quality, cost, and schedule.
2016-03-03
WIP Standard
EIA649C
When effectively and consistently applied, Configuration Management (CM) provides a positive impact on product quality, cost, and schedule. This standard is intended to assist in establishing, performing, or evaluating CM systems. CM is an integrated system of processes that ensure consistency of a product's performance, functional and physical attributes with its requirements, design, and operational information. The essence of CM, as portrayed in this consensus standard, is the common application of CM functions and their underlying fundamental principles, which have universal applicability across the broad spectrum of commercial and government enterprises. The standard provides an understanding of what to do, why a customer/suppler should do it, and when it is necessary to tailor the application of CM functions. This standard fulfills the important function of providing a rational basis upon which to apply good judgment in both planning for and executing CM across the enterprise.
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