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SELF EXPRESSIVE & SELF HEALING CLOSURES HARDWARES FOR AUTONOMOUS AND SHARED MOBILITY

General Motors Technical Center India-Vijayasarathy Subramanian, Biju Kumar, Masani Sivakrishna, Anandakumar Marappan
  • Technical Paper
  • 2019-28-2525
Published 2019-11-21 by SAE International in United States
Shared Mobility is changing the trends in Automotive Industry and its one of the Disruptions. The current vehicle customer usage and life of components are designed majorly for personal vehicle and with factors that comprehend usage of shared vehicles. The usage pattern for customer differ between personal vehicle, shared vehicle & Taxi. In the era of Autonomous and Shared mobility systems, the customer usage and expectation is high. The vehicle needs systems that will control customer interactions (Self-Expressive) & fix the issues on their own (Self-Healing). These two systems / methods will help in increasing customer satisfaction and life of the vehicle. We will be focusing on vehicle Closure hardware & mechanisms and look for opportunities to improve product life and customer experience in ride share and shared mobility vehicles by enabling integrated designs, which will Self-Express & Self-Heal. Vehicle closures having direct human interfaces with components like closures, handle & other hardware's will be tracked for their performance parameters and usage pattern. The performance parameters will be tracked for every customer and mapped to…
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Computer Vision and Monocular Camera System for Cost Efficient Autonomous Vehicle

Ashish K. Pidurkar
  • Technical Paper
  • 2019-28-2518
Published 2019-11-21 by SAE International in United States
The positioning of the sensors on vehicle will play a critical role in autonomous cars, it improves the performance of overall system by all the means and make it cost effective by reducing a total system cost. This paper contributes in deciding the best position of camera location on the vehicle with complete geometric and system calculation based on the maximum speed of vehicle, hardware processing speed, camera parameters, actuation and control time, Blind spot detections, maximum Height of objects, etc. The paper presents the technologies and datasets used for lane lines and other object detections. It focusses on newly proposed technique and its calculations to decide the best location of monocular camera sensor on the vehicle by considering all other parameters of autonomous vehicle system. It enhances the performance of overall system as well as reduces the system cost which takes us closer to the futuristic dream of efficient and low-cost autonomous vehicle.
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Steering and Handling Performance Optimization Through Correlation of Objective - Subjective Parameters and Multi-body Dynamics Simulation

Mahindra & Mahindra, Ltd.-Deva Ranjit Kumar Rajarajan, Vinothprakash Rajasekar, Shraddhesh Rasal, Baskar Anthonysamy, Visweswara Lenka
  • Technical Paper
  • 2019-28-2412
Published 2019-11-21 by SAE International in United States
RESEARCH OBJECTIVE: Automobile Industry has driven through the ages with continuous development with innovative technologies and frugal engineering. Expectation of customer is also increasing through the generations. To meet the customer demand for performance and be best in market, OEM needs to deliver best performance of vehicle with cost effective and short development process. Steering and Handling of vehicle is one of major customer touchpoints and needs to be tuned to achieve various conflicting requirements. The objective of this research is to optimize the steering and handling using correlation between three major methods of evaluation. METHODOLOGY: Methodology for optimization of steering and handling performance using correlation between subjective evaluation, objective measurement and multi-body-dynamic simulation is presented. In first phase, correlation of objective steering & handling parameters is established with subjective evaluation, based on evaluation of various vehicles in SUV segment. The objective parameters which give highest correlation are selected for target setting process. In second phase, Multi-body dynamic(MBD) model is developed in MSC ADAMS and is validated through physical kinematic and compliance data. Components such…
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Testing Electric Vehicle sub-systems using low cost programmable electronic load

Hella India Automotive Pvt Ltd.-Ameya V Gambhir, Nekzad Doctor
  • Technical Paper
  • 2019-28-2492
Published 2019-11-21 by SAE International in United States
The advancements in Electric Vehicles have introduced many complex sub-systems with demanding and sporadic power needs. For example, the current consumed by electric motor or bank of super-capacitors involve transients making them non-linear loads. Conventional test systems for load analysis mainly involved resistive loads where the rate of rise or fall of current was linear, falling short to accommodate the dynamic behavior of the Electric Vehicle loads. In this paper, we have proposed a low cost; yet effective electronic load that is independent of the battery voltage and can sink the current in any prescribed pattern with respect to time. The simulation results have shown the effectiveness of the hardware with respect to changes in temperature, aging and sudden input fluctuations. The implemented electronic load is interfaced to a desktop application to program the dynamic load behavior and the test duration. The same interface can act as data logger for long duration environmental and longevity tests. The indigenous system has proven quite useful for design validation tests and during End-of-Line testing of systems like DC-DC…
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In-Depth Analysis of Additive-Treated Gasoline with a Modified HFRR Technique

SAE International Journal of Fuels and Lubricants

Afton Chemical Company, USA-William Colucci, Kristine Morel
Shell Global Solutions (US) Inc., USA-Edward Malisa, Joseph Russo, Andreas Glawar, John Mengwasser, Edward Nelson
  • Journal Article
  • 04-13-01-0002
Published 2019-11-21 by SAE International in United States
Gasoline fuel lubricity is key to reducing wear and energy losses from friction in engines. The High-Frequency Reciprocating Rig (HFRR) test protocol recommended for gasoline fuels has been modified to evaluate the wear and friction properties of additized fuels. Adapted from the American Society for Testing and Materials (ASTM) D6079 test for diesel lubricity and literature-based procedures developed for gasoline fuels, the protocol and hardware used in this study allow for differentiation of fuels with unique additive chemistries and varying additive treat rates (EPA-approved lowest additive concentration, LAC, or higher). Supplementing HFRR tests, measurements of acoustic emissions corroborate friction coefficient trends using different additized fuels. Anti-wear performance of fuels during engine tests was characterized by roller-follower pin wear and metal concentration in engine oil, further distinguishing LAC from alternate additized fuels. The engine tests and acoustic emissions measurements support HFRR observations that gasoline fuels with varying additive chemistries and concentrations can offer enhanced lubricity compared to fuels additized with basic LAC additized fuels.
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CONNECTOR ACCESSORIES, ELECTRICAL, STRAIN RELIEF, NONENVIRONMENTAL, SELF-LOCKING AND NON-SELF-LOCKING, 45°, CATEGORY 4B (FOR MIL-DTL-5015 CRIMP, MIL-DTL-26482 SERIES 2, AS81703 SERIES 3, AND MIL-DTL-83723 SERIES III CONNECTORS)

AE-8C1 Connectors Committee
  • Aerospace Standard
  • AS85049/43B
  • Current
Published 2019-11-14 by SAE International in United States
No Abstract Available.
Annotation ability available
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Design and Research of Intelligent Vehicle EPB Controller Based on ISO26262 Standard

Nanjing Tech University-Min Song
Senior-Tian Le Jia
Published 2019-11-04 by SAE International in United States
In recent years, the development of intelligent vehicle and new energy vehicles has advanced by leaps and bounds, which has further improved the safety requirements of controllers. And more and more component manufacturers are actively promoting the ISO 26262 standard “Road Vehicles-Functional Safety”. At the same time, the electronic parking brake (EPB) system is an indispensable electronic product of the intelligent vehicle, which brings convenience to drivers and improves vehicle safety. So it is necessary to develop an intelligent vehicle pneumatic EPB system based on the ISO 26262 standard to improve reliability and safety. In this paper, the concept phase of the ISO 26262 standard was analyzed and applied to the design of the EPB system. The risk assessment and risk analysis of the EPB system were carried out, and the corresponding safety objectives were formulated. In this paper, a dual MCU scheme was proposed to the EPB system, which contained the core MCU and the monitoring MCU. Then the hardware circuit is designed according to the proposed safety goal, including mutual reset circuit and…
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Design and Validation of a Prototype Underlying Control System for Autonomous Vehicles

China Software Testing Center-Rong Wang
Fourth Author-Chaoyu Zhang
Published 2019-11-04 by SAE International in United States
With the development of self-driving cars, large amounts of sensors controllers, actuators and other devices will be integrated into autonomous driving system and the electrical and electronic architecture of traditional vehicles needs to be changed and upgraded. Therefore, this paper proposes a kind of autonomous vehicle underlying control system, which inputs perception and decision information and outputs control instructions to complete autonomous driving. The original vehicle electrical system hardware and software had redesigned and developed and a new electronic and electrical architecture for self-driving vehicles is presented. The underlying control system was designed to solve the problem of system integration and meet the upgrading requirements of data calculation and real-time transmission in autonomous vehicles. In the paper, the overall designing scheme of underlying control system introduces the underlying control system architecture diagram and three-layer modular communication architecture, then autonomous vehicles underlying control system hardware circuit design, software design and experiments are separated illustrated. With regards of hardware circuit, the underlying control system components, working mechanism and the integration with perception module and positioning module were…
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Analysis of Accelerator Hardware for Autonomous Vehicles and Data Centers

Wayne State University-Kyle W. Brown
Published 2019-10-22 by SAE International in United States
The development of Autonomous Vehicles (AV) has become a popular subject in academia and industry. Companies and cities are quickly realizing the opportunities that AVs can generate from Mobility as a Service to traffic safety. The challenges for the infrastructure to incorporate AVs as a viable transportation source are immense, from an outdated infrastructure to radical Smart-City designs. Historically, the transportation infrastructure has faced challenges from underfunding, economics, and much needed improvements. With the current infrastructure unable to support many of the services required by a fully connected network, a transformation will be necessary to meet growing mobility needs. The role of accelerating technology in data centers are key for production operations among industry leaders such as Amazon and Microsoft for real-time processing. The same accelerating technology that has successfully impacted data centers will play the same role in much smaller micro data centers (mDC) for Smart-City design in the transportation infrastructure. These mDCs and Edge computing sites will be tasked with the latency, tasking caching and offloading (TCO), and processing of millions of connected…
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Eddy Current Inspection of Circular Holes in Nonferrous Metallic Aircraft Engine Hardware

AMS K Non Destructive Methods and Processes Committee
  • Aerospace Standard
  • AS4787A
  • Current
Published 2019-10-14 by SAE International in United States

This SAE Aerospace Standard (AS) establishes minimum requirements for eddy current inspection of circular holes in nonferrous, metallic, low conductivity (less than 5% IACS) aircraft engine hardware with fasteners removed. The inspection is intended to be performed at maintenance and overhaul facilities on engine run hardware.