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Full-Scale Burn Test of a 2014 Sport Utility Vehicle

Colwell Consulting LLC-Benjamin Knox, Michael Papageorge, Jeff D. Colwell
  • Technical Paper
  • 2020-01-0925
To be published on 2020-04-14 by SAE International in United States
Results from a full-scale vehicle burn test involving a sport utility vehicle illustrated how fire spread throughout the vehicle, how temperature distributions changed over time, and how arcing-through-char is not guaranteed in a vehicle fire. The fire was initiated on a grommet on the rear portion of the passenger’s side of the engine compartment. Once the temperature near the origin reached approximately 600°C, the rate of fire spread rapidly increased. Over the next 3.5 minutes, the fire spread to all locations within the engine compartment and both front tires. Although the vehicle’s electrical system was energized for the duration of the fire, with the battery located at the rear of the passenger compartment, no evidence of beaded copper wires was observed on any of the conductors located in the engine compartment.
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Simulation of Conductive and Radiated Emission for Off and On-Board Radio Receivers According to CISPR 12 and 25.

Altair Engineering-Aseim Elfrgani, C. J. Reddy
Altair ProductDesign, Inc-Dipen Das
  • Technical Paper
  • 2020-01-1371
To be published on 2020-04-14 by SAE International in United States
Two of the most commonly exercised standards by Electromagnetic compatibility (EMC) automotive engineers are CISPR 12 and CISPR 25. Both are developed and established by EMC regulatory committee named as CISPR (International Special Committee on Radio Interference) which is a part of International Electrotechnical Commission (IEC). While CISPR 12 is imposed as a regulation to ensure uninterrupted communication for off-board radio receivers, CISPR 25 is often applied to ensure the quality of services of on-board receivers. Performing these tests becomes challenging until the vehicle is prototyped which may prolong the production time in case of failure or need for modification. However, conducting these tests in simulation environment can offer more time and cost-efficient way of analyzing the electromagnetic environment of automotive vehicles. In this paper, a computational approach is proposed in order to predict electromagnetic disturbance from on-board electronics/electrical systems using 3D computational electromagnetic (CEM) tool; Altair Feko. The presented study elaborates on radiated and conductive emission simulations performed for both vehicular and component/module level EMI testing according to CISPR 12 and 25. Simulation setup…
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Internal Model Control During Mode Transition Subject To Time Delay For Hybrid Electric Vehicles

Shanghai Jiao Tong University-Dongxiao Miao, Li Chen, Ping Yi
  • Technical Paper
  • 2020-01-0961
To be published on 2020-04-14 by SAE International in United States
With the rapid development of series-parallel hybrid electric vehicles (SPHEVs), mode transition from pure electrical drive to hybrid drive has attracted considerable attention. The presence of time delay due to response capacity of actuators and signal transmission of communication may lead to decrease of speed tracking accuracy, even instable dynamics. Consequently, drivability of the SPHEV is unacceptable, and durability of the components is reduced. So far, plenty of control strategies have been proposed for the mode transition, however, no previous research has been reported to deal with the time delay during the mode transition. In this paper, a dynamic model with time delay of hybrid electric system is established. Next, a mode transition time-delay controller is proposed by combining a two degree of freedom internal model controller (2DOF-IMC) and a Smith compensator. Considering the control plant has three inputs (the engine output torque, clutch transmitted torque and motor output torque) and two outputs (the engine speed and motor speed), the generalized inverse matrix is used to solve the non-square control problem for the inverse matrix…
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WIRE, ELECTRICAL, POLYTETRAFLUOROETHYLENE/POLYMIDE INSULATED, LIGHT WEIGHT, SILVER COATED, HIGH STRENGTH OR ULTRA HIGH STRENGTH COPPER ALLOY, 200 °C, 600 VOLT, ROHS

AE-8D Wire and Cable Committee
  • Aerospace Standard
  • AS22759/81C
  • Current
Published 2020-03-24 by SAE International in United States
No Abstract Available.
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WIRE, ELECTRICAL, POLYTETRAFLUOROETHYLENE/POLYMIDE INSULATED, LIGHT WEIGHT, SILVER COATED, COPPER CONDUCTOR, 200 °C, 600 VOLT, ROHS

AE-8D Wire and Cable Committee
  • Aerospace Standard
  • AS22759/91C
  • Current
Published 2020-03-24 by SAE International in United States
No Abstract Available.
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WIRE, ELECTRICAL, POLYTETRAFLUOROETHYLENE/POLYMIDE INSULATED, LIGHT WEIGHT, NICKEL COATED, HIGH STRENGTH OR ULTRA HIGH STRENGTH COPPER ALLOY, 260 °C, 600 VOLT, ROHS

AE-8D Wire and Cable Committee
  • Aerospace Standard
  • AS22759/82C
  • Current
Published 2020-03-24 by SAE International in United States
No Abstract Available.
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Digital Annex of Medium/Heavy-Duty E/E Systems Diagnosis Nomenclature

Truck Bus Control and Communications Network Committee
  • Ground Vehicle Standard
  • J2403DA_202003
  • Current
Published 2020-03-17 by SAE International in United States

This document is intended to supplement SAE J2403 by providing the content of Table 1, Table 2, and Table 3 from SAE J2403 in a form that can be sorted and searched for easier use. It is NOT intended as a substitute for the actual document, and any discrepancies between this Digital Annex and the published SAE J2403 document must be resolved in favor of the published document. This document provides the content of Table 1 and Table 2 published in SAE J2403 into the single table in the 'Term' tab, while the 'Recommended Term Definitions' tab provides the content of Table 3 in SAE J2403 and the 'Glossary' tab provides the content of Table 4 in SAE J2403.

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Test Methods for Insulated Electric Wire

AE-8D Wire and Cable Committee
  • Aerospace Standard
  • AS4373F
  • Current
Published 2020-03-12 by SAE International in United States
This standard describes test methods for insulated, single conductor, electric wire intended for aerospace applications. Particular requirements for the wire being tested need to be specified in a procurement document or other detail specification. Suggested minimum requirements are included in the notes at the end of some of the test methods. SAE Performance Standard AS4372 uses some of the tests in this document for evaluating comparative performance of aerospace wires.
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Performance Evaluation of a Heavy-Duty Diesel Truck Retrofitted with Waste Heat Recovery and Hybrid Electric Systems

SAE International Journal of Alternative Powertrains

Universita degli Studi Niccolo Cusano, Italy-Manfredi Villani, Simone Lombardi, Laura Tribioli
  • Journal Article
  • 08-09-01-0004
Published 2020-03-11 by SAE International in United States
The interest of long-hauling companies about the conversion of their fleets into low-emission and fuel-efficient vehicles is growing, and retrofitting options may represent a suitable solution. Powertrain hybridization and waste heat recovery are considered among the most promising methods to further improve the fuel economy of road vehicles powered by internal combustion engines. In this article, not only the effect of retrofitting a heavy-duty truck with an electrification-oriented ORC unit or with a series hybrid system is investigated, but also the possibility of implementing both at the same time. The conventional vehicle is powered by a heavy-duty 12.6 liters diesel engine. It is shown that, despite such a large engine has high potential for waste heat recovery, on the other hand it represents a very challenging constraint when designing a hybrid retrofitting. Four powertrain options are considered: conventional vehicle (engine-only powered), waste heat recovery retrofit, hybrid retrofit, waste heat recovery+hybrid retrofit. For the hybrid powertrains, the optimal control strategy is analyzed and used as a starting point to develop an online implementable rule-based control strategy.…
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Fundamentals in Wire Selection and Sizing for Aerospace Applications

AE-7C Systems
  • Aerospace Standard
  • AIR6540A
  • Current
Published 2020-03-06 by SAE International in United States
The scope of this report is to capture fundamental principles of selecting a wire size for an aerospace application using the method prescribed in the AS50881 standard and additional calculations, not found in AS50881, to ensure the wire selection will adequately perform in the specific physical and environment conditions. This report covers wire selection and sizing as part of the electrical wire interconnection systems (EWIS) used in aerospace vehicles. Aerospace vehicles include manned and unmanned airplanes, helicopters, lighter-than-air vehicles, missiles, and external pods. This document does not apply to wiring inside of airborne electronic equipment but shall apply to wiring externally attached to such equipment. Wire selection must consider physical and environmental factors to size wires such that they have sufficient mechanical strength, do not exceed allowable voltage drop levels, are protected by materials or circuit protection devices, and meet circuit current carrying requirements. For electrical power feeders and distribution, or EWIS applications, other information and environmental and installation limitations are also needed to adequately evaluate and select the correct wire size for a specific…
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