Search Results

At WCX World Congress Experience you’ll participate in live panel discussions, Q&As, keynotes, and breakout sessions with researchers and leaders across the industry.

This document describes the Client Adaptation Element (CAE), the set of functions that provides access and aggregation capability for the WDM LAN, within the SAE AS5659 WDM LAN specifications document family. In the WDM LAN, the CAE fits in between the Optical Backbone, which provides transmission of data over the transparent network, and the clients which the network serves. The complexity of the CAE depends on the types and number of clients.

This document describes network management and control facilities for the WDM LAN, within the SAE AS5659 WDM LAN specifications document family. Unlike like point-to-point solutions, networks require a control plane to allocate the shared network resources and a management plane which provides a disciplined approach to configuring and monitoring the network. Within a Wavelength Division Multiplexed (WDM) environment, management and control provides wavelength selection and routing for traffic that is processed. The extent of network management and control depends on the design of the network, and can range from hardwired wavelengths to dynamic wavelength allocation with damage recovery.

This document gives general guidelines to be used during the connector design stage. Various guidelines may not apply in all situations. Therefore, sound engineering judgment must be used in their application. Consider these guidelines as the basis for connector and wiring DFMEA’s. Items in this document are grouped by DFMEA functional requirements. Groups are as follows: A Non-functional Drawing Requirements B Electrical Continuity C Electrical Isolation/Sealing D Device Assembly E Harness Assembly F Vehicle Assembly G Serviceability

This document gives general guidelines to be used during the connector design stage. Various guidelines may not apply in all situations. Therefore, sound engineering judgment must be used in their application. Consider these guidelines as the basis for connector and wiring DFMEA’s. Items in this document are grouped by DFMEA functional requirements. Groups are as follows: A Electrical Continuity B Electrical Isolation/Sealing C Device Assembly D Harness Assembly E Vehicle Assembly F Materials G Serviceability H Environmental Requirements I High Voltage (≥ 60V) Application Requirements

Visual Place Recognition (VPR) excels at providing a good location prior for autonomous vehicles to initialize the map-based visual SLAM system, especially when the environment changes after a long term. Condition change and viewpoint change, which influences features extracted from images, are two of the major challenges in recognizing a visited place. Existing VPR methods focus on developing the robustness of global feature to address them but ignore the benefits that local feature can auxiliarily offer. Therefore, we introduce a novel hierarchical place recognition method with both global and local features deriving from homologous VLAD to improve the VPR performance. Our model is weak supervised by GPS label and we design a fine-tuning strategy with a coupled triplet loss to make the model more suitable for extracting local features.

Automotive Information Systems, Inc., which operates an automotive repair hotline, has developed a software application to make its technicians’ expertise available in an automated, interactive form. This system, Auto Fix, is based on Bayes Theorem, which models problems based on probability, and an extensive automotive database. Auto Fix delivers solutions to users via an easy-to-use Web-based user interface. This paper addresses the issues of user definition, team staffing, technology selection, knowledge authoring and data integration; it also offers observations on challenges and successes met in the development process.

The demands for effective and efficient management of commercial vehicles and freight transport have led to the increasing needs for sophisticated fleet management systems (FMS) for reducing the operation cost of commercial vehicle operation, improving custom service and asset management as well as maintaining the safety and security. The availability and declining costs of telecommunications and information technologies afford opportunities for using real-time information to achieve these targets and the emergence of internet technology make it possible to transfer updated real-time information through more widely available communication media. This paper introduces the web-based remote-access concept for the real-time information acquisition, which has been used to enhance functionality of a dynamic fleet management system.

This specification defines the procedures and requirements for joining metals and alloys using the electron-beam (EB) welding process.

The objective of this study is to determine the energy use and Greenhouse Gas (GHG) emissions involved in adopting various electrified vehicle technologies over the next decade in Canada and the United States. The vehicle architectures selected for this work stem from those in the EcoCAR competitions. Each architecture was simulated using Argonne National Laboratory's (ANL) Powertrain System Analysis Toolkit (PSAT) software to determine the energy consumption and petroleum use. Natural Resources Canada's GHGenius model and ANL's GREET model were employed to determine the upstream emissions resulting from each region's power generation mix. Results from each powertrain and fuel combination were analyzed in order to understand the repercussions of introducing these vehicle technologies over the next decade. The three Canadian Provinces selected for this study were Alberta, Ontario, and Quebec. The U.S. regions studied were the Northeastern U.S., California, and the complete U.S. mix.

The advent of active-safety and safety-critical functions, including by-wire systems, and the interdependency of these functions is rapidly changing the scenario of automotive systems. OEMs need to understand and control functional and timing properties, including end-to-end latencies of distributed computations. The evaluation of the timing behavior can be very complex, considering the communication and synchronization model between application tasks, middleware, and network drivers, and the scheduling choices for tasks and messages. In this view, the timing behavior of CAN messages is of very high importance. In this paper we present some of the challenges in the evaluation of CAN message latencies.

Spark plug and ignition voltage requirements were determined for a typical medium duty truck engine in four configurations: production gasoline version; dual gasoline-LPG carburetion; full LP-gas conversion; full LP-gas conversion with compression ratio increased from 7.6 to 8.93:1. This paper shows that spark plugs only one range colder should be used when converting from gasoline to LP-gas operation. Very cold running plugs are undesirable because of the higher sparking voltage requirements. Cylinder-to-cylinder variations in spark plug temperature were also found to be much greater using LP-gas.

The automotive PowerNet is in the middle of a major transformation. The main drivers are steadily increasing power demand, availability requirements, and complexity and cost. These factors result in a wide variety of possible future PowerNet topologies. The increasing power demand is, among other factors, caused by the progressive electrification of formerly mechanical components and a constantly increasing number of comfort and safety loads. This leads to a steady increase in installed electrical power. X-by-wire systems1 and autonomous driving functions result in higher availability requirements. As a result, the power supply of all safety-critical loads must always be kept sufficiently stable. To reduce costs and increase reliability, the car manufacturers aim to reduce the complexity of the PowerNet system, including the wiring harness and the controller network. The wiring harness e.g., is currently one of the most expensive parts of modern cars.

The wheel rotation sensor developed for navigation system is small and light, and generates high output voltage of 0.37V p-p without a prc-amplifier when the gap between the sensor and the multi-polarized magnetic rotor is 2.0mm. The sensor has excellent resistance to environmental conditions. Several simulation tests and car evaluations were carried out and it is confirmed that the sensor generates enough output voltage and satisfies requirements for the system including the decrease of output voltage caused by temperature, gap variation while running, and so on.

September 17-19, 2019 │ Garden Grove, CA, USA

Why should you attend the 2022 Thermal Management Systems Symposium

September 17-19, 2019 │ Garden Grove, CA, USA

September 17-19, 2019 │ Garden Grove, CA, USA