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NEXT GENERATION POWER DISTRIBUTION UNIT IN WIRING HARNESS

Mahindra & Mahindra Ltd-Boobala Krishnan D, T Vijayan, Apurbo Kirty
Mahindra Research Valley-Himanshi Dua
  • 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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Development of low cost life saving system for Automotive vehicles during Road Accidents.

Tata Technologies Ltd-Aashish Bhargava
Tata Technologies, Ltd.-Sachin Madhukarrao Pajgade
  • Technical Paper
  • 2019-28-2460
To be published on 2019-11-21 by SAE International in United States
According to research study 45% of death cause due to not getting help on time to the injured person. Research has proven that if injured person is not found any option of help then they also loose the power to fight such critical situation due to psychological effect. When vehicle met accident, people are not getting on time support, this delay is the major cause of death in developing nations. Presently there is no any robust system available in market for passenger & commercial vehicles which helps to provide on time help to the injured persons & saves human life. In current situation low cost life saving device is need of our society. This paper deals with the design & development of the low cost-life saving device. This paper also comprises the scenario when any vehicle meet an accidents within certain speed limit then how the intelligent life saving device will work & save the life's. Further it explains the type of life saving device design, logical programming and system packaging. The system has been…
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Thermal Challenges in Automotive Exhaust System through Heat Shield Insulation

Sharda Motor industries limited ( R&D )-Rajadurai S
  • Technical Paper
  • 2019-28-2539
To be published on 2019-11-21 by SAE International in United States
While advanced automotive system assemblies contribute greater value to automotive safety, reliability, emission/noise performance and comfort, they are also generating higher temperatures that can reduce the functionality and reliability of thesystem over time. Thermal management and insulation are extremely important and highly demanding in BSVI, RDE and Non-IC engine operating vehicles. Passenger vehicle and Commercial vehicle exhaust systems are facing multiple challenges such as packaging constraints, weight reduction andthermalmanagement requirements.Frugal engineering is mandatory to develop heat shield in the exhaust system with minimum heat loss. The focus of the paper is to design, develop and validate heat shield products with different variables such as design gap, insulation material, sheet metal thickness and manufacturing processes. 1D and 3D computational simulations are performed with different gaps from 3 mm to 14 mm are considered. Heat protection of about 75% is achieved ( from 614°C to 140°C) using different insulation materials. Sheet metal thicknesses from 0.15 mm to 1 mm with different manufacturing processes are used in the wrap around, closed and open type protections. Computational simulation and…
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Automotive Engineering: September 2019

  • Magazine Issue
  • 19AUTP09
Published 2019-08-29 by SAE International in United States
Engineering the 2020 Chevrolet Corvette The eighth-gen (C8) Corvette is a creative mix of novel and traditional technical solutions - unleashed at a shockingly low base price.Stuck on structural adhesives As the need for lighter materials and enhanced body performance intensifies, structural adhesives flourish as a materials-joining solution.Rethinking ADAS materials New specialized thermoplastics offer greater design freedom to improve sensor performance and packaging, at reduced cost.Inside VW's expanding Silicon Valley lab The pioneering California innovation hub enters its third decade on a new wave of innovation.Editorial There is no substitute for 'Automotive Grade'Standards News SAE embraces micromobility and its macro challengesSupplier Eye The value - and risks - of Technology TestbedsWhat We're DrivingLatest mass-reducing innovations honored by AltairGM underway with plan to build U.S. electric-vehicle charging infrastructureFord 'cranks' it up with another big V8 for MustangZF shifts EV transmission efficiency up a gear2020 Hyundai Palisade: New chassis, Atkinson V6Ford returns to OHVs for new commercial-truck V8Q&A American Battery Solutions Inc.'s Subash Dhar
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Cork and Rubber Composition Sheet; for Aromatic Fuel and Oil Resistant Gaskets

AMS CE Elastomers Committee
  • Aerospace Material Specification
  • AMSC6183B
  • Current
Published 2019-06-10 by SAE International in United States
This specification covers vulcanized sheet made of granulated cork uniformly dispersed in a synthetic rubber compound, for use in gaskets where aromatic fuel or oil resistance is required (See 6.2).
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Engine Exhaust Noise Optimization Using Sobol DoE Sequence and NSGA-II Algorithms

Tafe Motors and Tractors Limited-Ishwinder Pal Singh Sethi, Devendra Nene, Anand Shivajirao Patil
Published 2019-06-05 by SAE International in United States
Exhaust muffler is one of the most important component for overall vehicle noise signature. Optimized design of exhaust system plays a vital role in engine performance as well as auditory comfort. Exhaust orifice noise reduction is often contradicted by increased back pressure and packaging space. The process of arriving at exhaust design, which meets packaging space, back pressure and orifice noise requirements, is often manual and time consuming. Therefore, an automated numerical technique is needed for this multi-objective optimization.In current case study, a tractor exhaust system has been subjected to Design of Experiments (DoE) using Sobol sequencing algorithm and optimized using NSGA-II algorithm. Target design space of the exhaust muffler is identified and modeled considering available packaging constrain. Various exhaust design parameters like; length of internal pipes, location of baffles and perforation etc. are defined as input variables. Performance objective of back pressure and sound pressure level has also been defined in simulations workflow.Exhaust orifice noise has been reduced with significant reduction in overall simulations time. The optimal design is achieved satisfying all constrains leading…
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PACKING, PREFORMED - MS28775 O-RING

A-6C2 Seals Committee
  • Aerospace Standard
  • AS28775A
  • Current
Published 2019-06-03 by SAE International in United States
No Abstract Available.
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Reimagining Innovation: Additive Manufacturing

  • Magazine Article
  • TBMG-34570
Published 2019-06-01 by Tech Briefs Media Group in United States

In the injectable drug-delivery industry, expectations for improved patient experiences with administration and at-home delivery of therapeutic regimens are evolving. Products that combine the drug, its primary packaging, and a delivery system — commonly called combination products — are on the rise. The inclusion and expansion of digital elements in a delivery system can help deliver medical, sensor, and diagnostic information in real-time data streams. Such data can help caregivers provide better overall care, while other digital elements may encourage adherence to therapeutic regimens. Given these trends, additive manufacturing (AM) provides the opening for expansive idea generation and development agility that can lead to improved quality and new opportunities to disrupt the drug-delivery space.

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Approximating Convective Boundary Conditions for Transient Thermal Simulations with Surrogate Models for Thermal Packaging Studies

Oakland University-Laila Guessous
ThermoAnalytics Inc.-Jon Rene Juszkiewicz
Published 2019-04-02 by SAE International in United States
The need for transient thermal simulations in vehicle packaging studies has grown rapidly in recent years. To date, the computational costs associated with the transient simulation of 3D conjugate heat transfer phenomena has prohibited the widespread use of full vehicle transient simulations. This paper presents results from a recent study that explored a method to circumvent the computational costs associated with long transient conjugate heat transfer simulations.The proposed method first segregates the thermal structural and fluid physics domains to take advantage of time scale differences. The two domains are then re-coupled to calculate a series of steady state conjugate heat transfer simulations at various vehicle speeds. The local convection terms are then used to construct a set of surrogate models dependent on vehicle speed, that predict the local heat transfer coefficients and the local near wall fluid temperatures. These surrogate models are then coupled to the thermal structural simulation to simulate the wall temperature history.Results from transient conjugate heat transfer simulations of several vehicle test cycles were compared to simulations performed with the method described…
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Aerodynamic Development of the 2019 Chevrolet Corvette C7 ZR1

General Motors-Alexander Nastov, David Caples
Published 2019-04-02 by SAE International in United States
This paper presents an overview of the aerodynamic development of the 2019 Chevrolet Corvette C7 ZR1. Extensive wind tunnel testing and computational fluid dynamics simulations were completed to engineer the ZR1’s aerodynamics to improve lift-to-drag efficiency and track capability over previous Corvette offerings. The ZR1 architecture changes posed many aerodynamic challenges including increased vehicle cooling, strict packaging demands, wider front track width, and aggressive exterior styling. Through motorsports-inspired aerodynamic development, the ZR1 was engineered to overcome these challenges through the creation of new devices such as a raised rear wing and front underwing. The resulting Standard ZR1 achieved a top speed of 212 mph making it the fastest Corvette ever [1]. Optionally, the ZR1 with the ZTK Performance Package provides the highest downforce of any Corvette, generating approximately 950 pounds at the ZTK’s top speed [1].
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