Display:

Results

Viewing 1 to 30 of 15213
2015-01-14
Technical Paper
2015-26-0019
Werner Bick, Cagri Cevik, Christoph Steffens
Abstract In order to minimize the development and production costs in the automotive industry, despite steadily increasing variety of models and applications offered by the OEMs, the pressure on standardization of components and production processes is increasing continuously. As a direct consequence, modular engine families are already established with high degrees of common parts and kits as well as standardized interfaces for all vehicle platforms by most manufacturers these days. At the same time, the world adopted and announced massive legal demands concerning the reduction of CO2 emissions for the entire vehicle fleet. In addition to the optimization of the combustion process, the exhaust gas aftertreatment and thermal management, the use of improved and more resilient materials for higher reduction of mechanical friction leads to a significant amount of the realized lowering in fuel consumption respective CO2 emissions.
2015-01-14
Technical Paper
2015-26-0140
Milind Ambardekar, Adatiya Yogesh, Sudhakara Naidu
Abstract Production variations of a heavy duty truck for its vibrations were measured and then analyzed through an Ishikawa diagram. Noise and Control factors of the truck idle shake were indentified. The major cause was found to be piece to piece variations of its power-train (PT) rubber mounts. To overcome the same, a new nominal level of the mount stiffness was sought based on minimization of a cost function related to vibration transmissibility and fatigue damage of the mounts under dynamic loadings. Physical prototypes of such mounts were proved to minimize the variations of the driver's seat shake at idling among various trucks of the same design. These learning's are useful for design of various subsystems or components to refine the full vehicle-Noise Vibration Harshness (NVH) at the robust design level.
2015-01-14
Technical Paper
2015-26-0127
Gaurav Paliwal, Naveen Sukumar, Umashanker Gupta, Saurav Roy, Hemantkumar Rathi
Abstract The main emphasis for a commercial vehicle design which was focused on fuel-economy and durability does not fulfill the increasing customer expectations anymore. Commercial vehicle designers need to focus on other vehicle aspects such as steering, ride comfort, NVH, braking, ergonomics and aesthetics in order to provide car like perception to truck, bus drivers and passengers during long distance drives. Powertrain mounting system must perform many functions. First and foremost, the mounting system must maintain & control the overall motion of the powertrain, to restrict its envelope reasonably, thereby avoiding damage to any vehicle component from the potential impact. This requires the mount to be stiff. Second the mount must provide good vibration isolation to have a comfortable ride to the vehicle occupant. This requires the mount to be soft.
2015-01-14
Technical Paper
2015-26-0215
T Sukumar, Murugan Subramanian, Sathish Kumar Subramaniyan, Nandakumar Subramanian
Abstract Reliable sealing solutions are extremely important in commercial vehicle industry because sealing failures can cause vehicle breakdown, damage of equipment or even accident, incurring expenses that are substantially higher than the costs of just replacing the damaged seals. Consequently, new seal designs must be experimentally verified and validated before they can be implemented. In this study, Mooney - Rivlin hyper elastic material model is used to simulate the sealing behavior during dynamic conditions. The seal under study is a large diameter lip seal made of Neoprene® rubber (NBR) A finite element model to study the response of the seal under dynamic conditions was developed. The analysis took into account the mating parts dimensions and the lip seal parameters. Three designs were proposed and verified. The seal design is optimized using non-linear FEA and validated. Results include contact pressure, deflection and strain experienced by the seal during actuation.
2015-01-14
Technical Paper
2015-26-0154
Anand Ramalingam, Saravanakumar Thangamani
Abstract This paper discusses about the Flange design study carried out in Fuel Delivery Module (FDM) for meeting out contradictory requirements of robustness and crash worthiness. FDM is assembled in the fuel tank with flange covering the tank opening, and swirl pot assembly comprising fuel pump attached to flange through two steel struts. During crash, FDM undergoes sudden deceleration. Due to inertia, swirl pot assembly creates bending moment in the flange-strut interface. At such adverse condition, flange should not exhibit crack on the sealing side, as it might expose fuel in the fuel tank to the atmosphere. To ensure safety, flange-strut interface in the bottom side of flange is designed with higher stress concentration factor. So, the struts along with swirl pot assembly will break away from flange during crash without creating crack in the flange sealing faces.
2015-01-01
Journal Article
2014-01-9101
Susan Sawyer-Beaulieu, Edwin K.L. Tam
Abstract Life-cycle assessments (LCAs) conducted, to date, of the end-of-life phase of vehicles rely significantly on assumed values and extrapolations within models. The end phase of vehicles, however, has become all the more important as a consequence of increasing regulatory requirements on materials recovery, tightening disposal restrictions, and the rapid introduction of new materials and electronics, all potentially impacting a vehicle's efficacy for achieving greater levels of sustainability. This article presents and discusses selected research results of a comprehensive gate-to-gate life-cycle-inventory (LCI) of end-of-life vehicle (ELV) dismantling and shredding processes, constructed through a comprehensive and detailed case study, and argues that managing and implementing creative dismantling practices can improve significantly the recovery of both reusable and recyclable materials from end-of-life vehicles.
2014-12-22
Standard
AMS4141G
This specification covers an aluminum alloy in the form of die forgings and forging stock ordered to inch/pound units. These forgings have been used typically for parts requiring good resistance to stress-corrosion cracking but with lower strength than AMS4126, but usage is not limited to such applications.
2014-12-22
Standard
AMS4050J
This specification covers an aluminum alloy in the form of plate. This plate has been used typically for parts requiring a high level of mechanical properties and good resistance to stress-corrosion cracking, but usage is not limited to such applications.
2014-12-15
Standard
AS1300D
SCOPE IS UNAVAILABLE.
2014-12-12
Standard
AS83248/2
Scope is unavailable.
2014-12-12
Standard
AS83248/1
Scope is unavailable.
2014-12-12
Standard
AS3075E
SCOPE IS UNAVAILABLE.
2014-12-10
WIP Standard
AS7460B
This procurement specification covers aircraft-quality bolts and screws made of 6.0Al 4.0V titanium alloy and of 160 ksi tensile strength at room temperature. Primarily for aerospace propulsion system applications where high strength, light weight fasteners are required for use up to approximately 600 °F.
2014-12-08
Standard
MA1565C
This SAE Metric Aerospace Standard defines the requirements for corrosion resistant steel helical coil metric series screw thread inserts made from formed wire, the inner surfaces of which, after assembly, provide internal threads of the diameter and pitch specified on the drawing.
2014-12-08
Standard
MA3433A
SCOPE IS UNAVAILABLE.
Viewing 1 to 30 of 15213

Filter