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Viewing 31 to 60 of 21093
2015-01-14
Technical Paper
2015-26-0104
Santhoji Katare, Carolyn Hubbard, Seha Son
Aftertreatment system design involves multiple trade-offs between engine performance, fuel economy, regulatory emission levels, packaging, and cost. Selection of the best design solution (or “architecture”) is often based on an assumption that inherent catalyst activity is unaffected by location within the system. However, this study acknowledges that catalyst activity can be significantly impacted by location in the system as a result of varying thermal exposure, and this in turn can impact the selection of an optimum system architecture. Vehicle experiments with catalysts aged over a range of mild to moderate to severe thermal conditions that accurately reflect select locations on a vehicle were conducted on a chassis dynamometer. The vehicle test data indicated CO and NOx could be minimized with a catalyst placed in an intermediate location.
2015-01-14
Technical Paper
2015-26-0120
Sohan Sontakke, Pankaj Kumar
The Performance of Electric Hybrid Transmission system is controlled by Electronic control unit (ECU). ECU Casing, which packages Printed circuit board (PCB) with components soldered on both sides, have to protect the PCB and components from • Thermal Damage • Dust and Water ingress • Vibrations in the vehicle • Air-Pressure fluctuations Paper enlightens Product development Architecture of ECU Casing explaining all Phases of product cultivation from processing of inputs till validation of the product. Requirement Analysis being first phase, analyses all PCB requirements, mechanical requirements related to product certification. Architecture Conceptualization being second phase, analyses layout optimization, Material Category, Manufacturing Category, Production Process, Material Grade. Design being third phase, analyses all aspects of Engineering Design, Manufacturing Design, and Feasibility Design.
2015-01-14
Technical Paper
2015-26-0012
Torben Mielke, Mircea Negrean, Wei Lu, Jonas Rox, Jan Gacnik
Modern distributed electronic vehicle systems like advanced driver assistance systems are unique selling points for modern cars. These systems integrate different vehicle domains and existing components. When implementing such new billable features, it is the key to change the existing E/E-architecture only where it is mandatory, to avoid unnecessary additional cost per unit. To minimize the required changes to the existing hardware platform when integrating new functionality, vehicle manufacturers need to have in-depth knowledge of their E/E-architecture. This knowledge allows designing distributed systems which can be integrated cost-effectively (i.e. with the least amount of changes) into the existing E/E-architecture. With modern vehicle architectures featuring several bus technologies (e.g. CAN, LIN, FlexRay, Ethernet) and several dozens of E/E-components, the required in-depth knowledge of such architectures can only be achieved using model-based analysis and design techniques.
2015-01-14
Technical Paper
2015-26-0086
Prakhar Srivastava, Manish Laxman Karle, Ujjwala Shailesh Karle, Anand A Deshpande
Electric Power Assist Steering (EPAS) is a safety critical system because it affects vehicle stability and dynamics. Therefore, this system should be very reliable. To ensure safety and reliability ISO 26262 standards are adapted which is derived from IEC 61508. This standard regulates product development on system, hardware and software level and manages functional safety for electrical and electronics components. This paper discusses the applicability of the ISO 26262 standard to the development of EPAS ECU w.r.t its hardware and software design. For the hardware safety and reliability, the paper describes the hardware design safety analysis methods like Fault Tree Analysis (FTA), Failure mode and effect analysis (FMEA) and Hazard analysis. The paper discusses the use of these techniques used for improvement of reliability and safety of EPAS at component and system level.
2015-01-14
Technical Paper
2015-26-0100
Prasanna G Bhat, Bhaskar Melage B.H, Dadarao Narwade, Hirak Gayan, Narendra Pawar, Neelkanth V Marathe, Dharmdev Vyas, Samadhan Awate, Abhishek Meshram, Pramod Ghadage, PJM Khan
Abstract The Objective of this work is to upgrade existing TCIC Engine from current stage-I emission limits to the revised stage-II limits for diesel operated generating set application. In this optimization work, it is focused to meet the stringent emission limits by optimizing the existing engine without any major modification in the basic design. Over recent past years, stringent emission legislations have been imposed on reduction of emission parameters emitted from diesel engines. The concerned authorities have revised emission limits which are applicable from July 2014. The se revised limits are the most stringent limits for the category engines above 75 kW. This paper deals with the task of upgrading the present engine with certain design changes, experimentation details & strategies applied to meet the revised emission Norms. The criticality of the task surges exponentially for Turbocharger and Intercooled versions.
2015-01-14
Technical Paper
2015-26-0097
Prasanna G Bhat, Sukrut Thipse, Neelkanth V Marathe, Narendra Pawar, Dadarao Narwade, Hirak Jyoti Gayen, Bhaskar Melage, S V A Achari
Abstract Single cylinder and two cylinder diesel engines are widely used as a source of power generation, three wheelers as well as agricultural machines in small house-hold applications in India and other Asian countries. Use of high end technologies makes these engines too expensive. Therefore simple mechanically controlled components are used for these engines which make them simple in operation and maintenance. In order to meet stringent emission norms, there is a need for the development of these engines. The up-gradation of a two cylinder diesel genset engine is achieved with minimum hardware changes in the engine to make it cost effective. The engine is upgraded from Naturally Aspirated to Turbocharged Intercooled configuration with Exhaust Gas Recirculation (EGR). The changes in hardware include selection of suitable turbocharger, intercooler, and EGR flow rate. Presently, there are very few twin cylinder diesel engines with turbocharging for genset application.
2015-01-14
Technical Paper
2015-26-0107
Moqtik Ashok Bawase, Amita Baikerikar, M R Saraf
Airborne particulate matter (PM) in an urban atmosphere is a result of contribution from diverse range of source including domestic, industry and vehicles. PM emission is a matter a concern due to its multiple impacts on public health, air quality, and global climate. Ever increasing number of vehicles plying on the road is considered to be one of the major sources of PM. Particles in gasoline and diesel vehicle exhaust carry distinctive combinations of certain chemical compounds. Prominence of their chemical signature in ambient particulate matter can be considered as a direct indication of their relative importance as sources of emissions. In this study, Chemical speciation data of vehicle exhaust PM is analyzed and vehicle category wise distribution of carbon fractions is presented for different engine technologies and fuel types.
2014-12-01
Magazine
Materials Infusing Lightweight Composite Structures Business Jets Business Jets Bounce Back
2014-11-26
Article
Lead-acid batteries have clear advantages in cost and low-temperature performance, but Li-ion has its own set of pluses.
2014-11-25
Article
Ophir Photonics’ 1000WP-BB-34 high-power water cooled thermal sensor is designed with the requirement that all materials coming in contact with the cooling water are either copper or nonmetallic.
2014-11-25
Article
Allison Transmission is offering a new option to fully electrify components used with its H 40/50 EP hybrid propulsion system for transit buses and coaches. Co-developed with Vanner Inc., Increased Accessory Power II provides power from the hybrid system to accessories such as electric air conditioning, electric air compressors, and power steering systems.
2014-11-25
WIP Standard
AIR5464A
Over the past decade several metal clad fibers and fabrics have been developed to provide aerospace vehicle designers with a conductive, lighter weight alternative to coated copper or steel for shielding and harness overbraids of electrical cables. Several of these candidates have been unable to provide the strength or thermal stability necessary for the aerospace environment. However, the aramid-based products have shown remarkable resistance to the rigorous environment of aerospace vehicles. Concurrent with these fiber developments, there have been changes in the structures of aerospace vehicles involving greater use of nonmetallic outer surfaces. This has resulted in a need for increased shielding of electrical cables which adds substantial weight to the vehicle. Thus, a lighter weight shielding material has become more critical to meet the performance requirements of the vehicle.
2014-11-25
WIP Standard
AIR6853
This Aerospace Information Report (AIR) provides information on the thrust vectoring flight control systems incorporated on various aircraft development programs and production military aircraft. This report includes V/STOL aircraft thrust vector applications in addition to recommendations for use of thrust vectoring for the improvement of low speed maneuverability in conventional aircraft. Descriptions of each aircraft are provided along with a summary of the thrust vector control system, and, mechanical design methodologies used. Block diagrams, system schematics, and, several system level components are presented.
2014-11-24
Article
TDK Corp.’s BCEM series of EPCOS high-current chokes are designed specifically for buck-boost converters in 48-v automotive power systems.
2014-11-24
Standard
J2698_201411
1.1 This SAE Recommended Practice covers the design and application of primary on-board wiring distribution system harnessing for surface vehicles. This document is intended for single phase nominal 120 VAC circuits that provide power to truck sleeper cab hotel loads so that they may operate with the main propulsion engine turned off. The power supply comes from alternative sources such as land-based grid power, DC-AC inverters and auxiliary power generators. The circuits may also provide power to improve vehicle performance through charging batteries or operating cold-weather starting aids. 1.2 This document is not intended to provide guidance for electric or hybrid electric vehicle wiring circuits. Refer to SAE J1673 for high voltage automotive wiring assembly design. 1.3 Engine block heaters are 120 VAC devices that are used on a multitude of vehicle platforms in addition to trucks with sleeper cabs. Generally, the engine block heater circuit is wired independent of hotel loads.
2014-11-20
Standard
ARP1308D
The intent of this ARP is to identify electrical connectors maintained by the AE-8C1 Committee, to provide their general application characteristics, associated configuration options, and recommendations for new design (see 6.1.1), repair, and retrofit purposes (see 6.1). It is acknowledged the connectors listed herein will not completely satisfy all mobility vehicle and equipment requirements, but optimization of the use of these components will facilitate standardization in the form of maximum utilization of a minimum variety of connectors. This ARP only pertains to AS connector standards. See MIL-STD-1353 for U.S. military specification connector information.
2014-11-20
Standard
ARP739A
This ARP is intended to promote better understanding of gas system characteristics and operation in order to aid in system selection and design. Various gas systems are classified in a broad sense, component operation is described in moderate detail, pertinent design parameters are discussed, and possible modes for system operation are listed.
2014-11-20
Standard
EIA649_1
This document applies to hardware and software and provides CM requirements to be placed on contracts after being tailored by the Acquirer. The requirements have been organized by the following five CM functions: a. Configuration Planning and Management b. Configuration Identification c. Configuration Change Management d. Configuration Status Accounting e. Configuration Verification and Audit
2014-11-19
Article
Technology developed by Tech Mahindra for vehicle-to-infrastructure and vehicle-to-vehicle communication provides a blueprint for creating a gateway that will help achieve seamless V2X mobility.
2014-11-18
Article
Scientists at Fraunhofer have developed a high-resolution magnetic line camera to measure magnetic fields in real time, which is particularly useful for quality assurance during the manufacture of magnets.
2014-11-18
Article
Potential exists for more efficient re-use of rare earth elements, Purdue professor asserts. Regardless of choice, original component design should be engineered for dismantling to enhance end-of-life recovery, he tells Automotive Aftermarket Industry Week forum in Las Vegas.
2014-11-18
WIP Standard
J1779
The marine environment differs greatly from other environments in which hydraulics are used. This Recommended Practice provides hydraulic design considerations and criteria for the marine environment and is applicable to commercial vessels, military ships, and submersible vehicles. This document may be used for manned and un-manned vehicles.
2014-11-18
Magazine
Oil debris monitoring in aero engines In a gas turbine engine, small particles or "chips" are generated at the point of wear, serving as an advanced warning that catastrophic failure will occur if the wear is not addressed. Health monitoring systems, such as oil debris monitoring, are used to find these small particles so that the wear can be resolved before it's too late. Indigenous powertrain development Customer needs and expectations on drivability, fuel economy, and safety has pushed Indian and multinational OEMs to think about the development of powertrains and gearboxes for local needs with global standards. The next wave of crash simulation As computing speed has improved and software itself has made significant speed and performance gains with each release, modeling tools are now quick enough to build high-quality, large, high-detail vehicle models in a very efficient manner.
2014-11-17
Article
Among the many premium interior features in the 2015 Hyundai Genesis is a “world-first” safety technology—an in-cabin CO2 sensor control system, located under the glove box, that combats occupant drowsiness.
2014-11-17
Article
The Association of Global Automakers and its 12 member companies have unveiled auto industry consumer privacy protection principles (http://www.globalautomakers.org/topic/privacy) for vehicle technologies and services.
2014-11-14
WIP Standard
J1113/13
This SAE Standard specifies the test methods and procedures necessary to evaluate electrical components intended for automotive use to the threat of Electrostatic Discharges (ESDs). It describes test procedures for evaluating electrical components on the bench in the powered mode and for the packaging and handling non-powered mode. A procedure for calibrating the simulator that is used for electrostatic discharges is given in Appendix A. An example of how to calculate the RC Time Constant is given in Appendix B Functional Performance Status Classifications for immunity to ESD and Sensitivity classificatins for ESD sensitive devices are given in Appendix C.

Sensitivity classifications for ESD sensitive devices are given in Appendix B.

2014-11-13
Article
Having two gear ratios rather than the single ratio that is typical of EVs enables the eAxle to boost the i8's all-wheel-drive performance across its entire speed range.
2014-11-13
WIP Standard
AIR5358A
This SAE Aerospace Information Report (AIR) was prepared by a panel of the SAE A-5 Committee. This document establishes the specifications for fluids used in landing gear shock struts with extreme pressure and antiwear additives that have been added for improved lubrication.
Viewing 31 to 60 of 21093

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