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NEXT GENERATION POWER DISTRIBUTION UNIT IN WIRING HARNESS

Mahindra & Mahindra, Ltd.-Boobala Krishnan D, Himanshi Dua, T Vijayan, Apurbo Kirty
  • Technical Paper
  • 2019-28-2571
To be published on 2019-11-21 by SAE International in United States
Keywords – Miniaturization, Low Profile (LP) Relays, Low Profile (LP) Fuses, Fuse box, Wiring Harness Research and/or Engineering Questions/Objective With the exponential advancement in technological features of automobile’s EE architecture, designing of power distribution unit becomes complex and challenging. Due to the increase in the number of features, the overall weight of power distribution unit increases and thereby affecting the overall system cost and fuel economy. The scope of this document is to scale down the weight and space of the power distribution unit without compromising with the current performance. Methodology Miniaturization involves replacing the mini fuses and J-case fuses with LP mini and LP J-case fuses respectively. The transition doesn’t involve any tooling modification and hence saves the tooling cost. Furthermore, to address stringent weight and space targets, LP mini fuses and LP J-case fuses were further replaced with micro-2 fuse and M-case fuse respectively. Similarly, micro relay and mini relay were replaced with Ultra micro and High current micro relay respectively. Results We took MPV segment vehicle for our initial testing and validation…
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Miniaturized and sleek protective device

Mahindra & Mahindra, Ltd.-Priyanka Marudhavanan
  • Technical Paper
  • 2019-28-2535
To be published on 2019-11-21 by SAE International in United States
A miniaturized and sleek protective device M. Priyanka, Mahindra&Mahindra, India D. Boobala Krishnan*, Mahindra&Mahindra, India T.Vijayan, Mahindra& Mahindra, India Keywords-Fuse, Lightweight. Research and/or Engineering Questions/Objective: Now-a-days there is lot of advancement coming in automobiles. Earlier the electronics were used in engine and engine compartment areas. Now all hydraulics and transmission have been operated by electronics. The role of electronics like sensors, actuators increasing day by day for lifting and moving operations. With increase in electronics circuit, there is complex in wiring harness and packaging space for fuse box is premium Limitations: Limitations of placing other devices. Occupy more space and weight in the vehicle. Packing constraint due to vibration and thermal management issues. Methodology: Two different fuse of same rating can be given in one fuse and we can reduce the wire size. By this method we can save many fuses and reduce the fuse box size. An optimized fuse box minimizes the length of circuit. It translates the system into less plastics. This type of system is highly useful in systems such as ECU…
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Optimization of An EV Controller Design For A Three Wheeler BOVs - EMC Approach

International Centre for Automotive Technology-Nikhil Grover
  • Technical Paper
  • 2019-28-2474
To be published on 2019-11-21 by SAE International in United States
Introduction: The advent of electric mobility is changing the conventional mobility techniques and their application in automobiles across all segments. Three wheeler Battery Operated Vehicles (BoVs) are a special category of electric vehicles (EVs) as far as EMC compliance is concerned. The problem mainly lies with the open body design and cost cutting measures being exercised by the manufactures which makes Electromagnetic compatibility (EMC) compliance challenging. Objective: Though it is sometimes possible to resolve EMC malfunctions related to motor power cable, cables & wiring harness etc. using external techniques post design stage, but controller being a closed and typical element makes it difficult to improve against EMC malfunctions using external techniques. This paper would concentrate on the controller design parameters and improvement of the same in terms of Electromagnetic compatibility (EMC) and performance efficiency at the design stage itself. Methodology: This study would concentrate on designing of motor controller for three wheeler EVs, improving and optimizing the EMI/EMC aspects of the design and its performance with the following aspects in mind: 1. Selection of critical…
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Wiring Harness Optimization towards Wireless Vehicle

Eicher Motors Limited-Nikhil Baluja
  • Technical Paper
  • 2019-28-2530
To be published on 2019-11-21 by SAE International in United States
Paper Title - Wiring Harness Optimization towards Wireless vehicle Research and/or Engineering Questions/Objective (maximum 100 words)  In current scenario, wiring harness plays a vital role in inter-connecting electrical & electronic components fitted all across the vehicle.  As per cable standard, DIN 72551 or ISO 6722, copper conductors being used in stranded wires against cable cross-section & corresponding weight.  While going complete wire-less requires each component to have its own battery, ground, transmitter & receiver which indeed is a very costly affair to be employed in vehicle as huge development cost is required.  Here I'm suggesting an innovative method to make a vehicle apparently Wire-Less by creating local clusters connected to each other via conventional wiring harness & wire-less module.  Such method will apparently give a look of Wire-less vehicle itself & better advantages in terms of installation, service, troubleshooting, uptime & customer delight.  Moreover, direct benefits of Cost, Weight, FE will also be achieved. Methodology (maximum 150 words) # To start with this technology, I've divided it in different…
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Wire and Cable Marking Process, UV Laser

AE-8A Elec Wiring and Fiber Optic Interconnect Sys Install
  • Aerospace Standard
  • AS5649A
  • Current
Published 2019-10-21 by SAE International in United States

This standard is applicable to the marking of aerospace vehicle electrical wires and cables using ultraviolet (UV) lasers. This standard specifies the process requirements for the implementation of UV laser marking of aerospace electrical wire and cable and fiber optic cable to achieve an acceptable quality mark using equipment designed for UV laser marking of identification codes on aerospace wire and cable. Wiring specified as UV laser markable subject to AS4373 and which has been marked in accordance with this standard will conform to the requirements of AS50881.

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SLEEVE, CHAFE-PROTECTION, HIGH ABRASION EXPANDABLE (-55 TO +200 °C)

AE-8D Wire and Cable Committee
  • Aerospace Standard
  • AS60491/4
  • Current
Published 2019-10-03 by SAE International in United States

Scope is unavailable.

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SLEEVE, CHAFE-PROTECTION, WRAP-AROUND, SELF-CLOSING (-55 TO +200 °C)

AE-8D Wire and Cable Committee
  • Aerospace Standard
  • AS60491/1
  • Current
Published 2019-10-03 by SAE International in United States

Scope is unavailable.

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SLEEVE, CHAFE-PROTECTION, EXPANDABLE (-55 TO +200 °C)

AE-8D Wire and Cable Committee
  • Aerospace Standard
  • AS60491/3
  • Current
Published 2019-10-03 by SAE International in United States

Scope is unavailable.

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SLEEVE, CHAFE-PROTECTION, EXPANDABLE (-55 TO +240 °C)

AE-8D Wire and Cable Committee
  • Aerospace Standard
  • AS60491/5
  • Current
Published 2019-10-03 by SAE International in United States

Scope is unavailable.

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Sleeve, Protection, for Cable and Harness Protection

AE-8D Wire and Cable Committee
  • Aerospace Standard
  • AS60491A
  • Current
Published 2019-10-03 by SAE International in United States

Procurement specification is principally for defining protection sleeves on a cable or group of electrical/fiber optic wires (wiring bundle). Single wire protection depends on the minimum diameter of the wire. Sleeve may be used to protect a wire bundle for a platform installation or for repair of installed damaged jacket or jacket/shielded wire bundles. Refer to AS50881 for aerospace wire bundle protection installations.