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The Road to the Top is Not on the Map: Conversations with Top Women of the Automotive Industry

Terry Barclay
Center For Automotive Research-Carla Bailo
  • Book
  • R-491
To be published on 2019-10-01 by SAE International in United States

Carla Bailo, CEO of the Center for Automotive Research, and Terry Barclay, CEO of Inforum, bring together over 30 of the most influential women in the automotive industry to share their insight and advice. From suppliers to OEMs, they hail from every corner of the industry.

Automated Vehicle Disengagement Reaction Time Compared to Human Brake Reaction Time in Both Automobile and Motorcycle Operation

Dynamic Analysis Group LLC-Jeffrey T. Dinges, Nicholas J. Durisek
  • Technical Paper
  • 2019-01-1010
To be published on 2019-04-02 by SAE International in United States
Autonomous Vehicle Disengagement Reports have been published by the California Department of Motor Vehicles since 2015. Some of the autonomous control system manufacturers and vehicle manufacturers provide information that includes the time that it takes for a human driver to take manual control of the vehicle when reporting on vehicle disengagements. This study compares the reported autonomous vehicle operation disengagement reaction time to field literature in testing and experimentation on human reaction times for both automobile and motorcycle operation. The study will address the types of autonomous vehicle disengagements that occurred during the collection along with the understood conditions that surround the disengagement. It will also address how autonomous vehicle disengagements and general human perception and reaction performance influences autonomous vehicle operation.

Modelling of a Discrete Variable Compression Ratio (VCR) System for Fuel Consumption Evaluation - Part 2: Modelling Results

Luca Barazzoni
Oakland University-Brian Sangeorzan, Dan DelVescovo
  • Technical Paper
  • 2019-01-0472
To be published on 2019-04-02 by SAE International in United States
Variable Compression Ratio systems are an increasingly attractive solution for car manufacturers in order to reduce vehicle fuel consumption. By having the capability to operate with a range of compression ratios, engine efficiency can be significantly increased by operating with a high compression ratio at low loads, where the engine is normally not knock-limited, and with a low compression ratio at high load, where the engine is more prone to knock. In this way, engine efficiency can be maximized without sacrificing performance. This study aims to analyze how the effectiveness of a VCR system is affected by various powertrain and vehicle parameters. By using a Matlab model of a VCR system developed in Part 1 of this work, the influence of the vehicle characteristics, the drive cycle, and of the number of stages used in the VCR system was studied. This model takes as inputs: a switching time for the VCR system, the vehicle characteristics, the engine performance maps corresponding to the distinct compression ratios utilized and a vehicle drive cycle. The impact of the…

Evaluating a Heavy-duty Truck Climate Control System using Thermal Comfort-focused Testing and Simulation Techniques

ThermoAnalytics Inc.-Mark Hepokoski, Steven Patterson, Allen Curran
Volvo Trucks North America-Steven Adelman, Miguel Javier
  • Technical Paper
  • 2019-01-0696
To be published on 2019-04-02 by SAE International in United States
The design of efficient vehicle climate control systems involves reconciling two competing objectives: Maximizing the thermal comfort of occupants while simultaneously reducing the vehicle’s energy usage. Given the energy expenditure of traditional HVAC systems, efforts have been directed toward reducing their weight and power requirements. Consequently, vehicle manufacturers are increasingly investigating the use of thermal comfort as a design metric, rather than air temperature, which requires heating or cooling of the entire cabin air volume. Thermal comfort-focused technologies, such as localized heating and cooling strategies, have the potential to elicit favourable subjective responses to thermal environments even when the ambient air temperature in the cabin would otherwise fall outside of established acceptability guidelines. These technologies can be especially relevant for heavy-duty truck manufacturers since the cabin is relatively large, with an HVAC system sized accordingly, and often occupied by a single driver for long durations. Thermal comfort-focused testing and simulation techniques previously employed for automobiles have been applied to scenarios involving heavy-duty trucks. A set of human subjects and a test system comprised of a…

Establishment of Chassis Dynamo-meter for commercial vehicles

Ashok Leyland, Ltd.-Ramarajan Yogeeswaran, Shiju Subramaniom, Senthil Krishnan R
  • Technical Paper
  • 2019-01-0702
To be published on 2019-04-02 by SAE International in United States
The Chassis Dynamo-meter system provides a means of testing vehicle in place of driving them on the test track or highway. The machine simulates road conditions in speed, torque or road load control modes, allowing the vehicle to experience the same forces as it would be on the test track or highway. Chassis dynamo-meter with its 24 x 7 capabilities can perform several value-added tests to assess vehicle performance while operating under load in short period of time and with other intangible benefits such as well-timed product launch, reduced breakdown time and faster failure resolution, Dynamo-meter is worthy of an investment. However, the scale of investment and constraints in required infrastructure limits the number of dynamo-meters in a R&D center of Original Equipment Manufacturers. With such limitations, comes the challenges of sizing dynamo-meter and infrastructural requirements in a way that it caters to wide range of products (GVW 3500 kg to 50000 kg) in the portfolio of OEMs. This paper deliberates on the approach taken to address these challenges. Products in the portfolio and test…

PDT Application: Systematic Decision Tool for Seeking Optimum Performance

California State University, Long Beach-Allen Teagle-Hernandez
HSEA Technology, Inc.-Takehisa Matsuda
  • Technical Paper
  • 2019-01-0820
To be published on 2019-04-02 by SAE International in United States
The NVH development for interior quietness as related to air-borne noise of a new automobile typically undergoes several stages where each stage can consist of various models. The issue is how do you track NV performance progression and how can one ensure that this progression is efficient and that NV specialists avoid seat-of-the-pants decisions. Additionally, sound proof material packages are developed by multiple suppliers and therefore how can OEMs catalog each performance in order to assign the right selection. Is there a platform which facilitates the comparison of NV performance at various levels (component, parts and flat samples)? Performance Design Tool (PDT) is a comprehensive vehicle development management system that allows NVH engineers to establish a systematic process to make sound design decisions which will save time and money. In PDT, the Energy Transmission Loss (ETL), which is a metric established by HONDA that can evaluate insulation and absorption performance in a comparable manner, has been further developed by collaborating with Hybrid Statistical Energy Analysis (HSEA) model, and it enables engineers to analyze more details…

Instrumentation and Processor in Loop Verification for Dynamic Skip Fire Technology

Tula Technology Inc.-Arnav Mohan, Karthik Deepak Natraj, Joe Serrano
  • Technical Paper
  • 2019-01-1245
To be published on 2019-04-02 by SAE International in United States
Amidst various cylinder deactivation technologies in automobile engines which provide better fuel efficiency, Dynamic Skip Fire (DSF) has proved to be quite promising. In DSF, a firing decision is made every crank angle event based on how much torque is requested. Providing this technology to automakers in form of a software package can be quite challenging given that there is little or no hardware access to a customer’s engine controller. The integration of the DSF software package with controller firmware can cause certain deviations in timing and performance depending on the platform and compiler being used by the manufacturer. In this paper, we discuss how we can closely emulate a development and testing environment and produce confident instrumentation and test results. To do so we use the same family of microcontrollers and compiler as that of the target controller and use an industry wide calibration and test software. Further, the timing data acquired from various functions in the DSF source code is analyzed in detail, with emphasis given to drive-train data as inputs to the…

Development and Research of Laser Ranging Vehicle Driving Deviation Test System

Wuhan University of Technology-Xiaolong He, Can Yang
  • Technical Paper
  • 2019-01-0926
To be published on 2019-04-02 by SAE International in United States
Before the new car goes offline, due to assembly errors, inaccurate four-wheel positioning, etc., the vehicle will run off on a flat road, which will affect the driving comfort and safety. At present, most automobile manufacturers choose to perform the deviation test in the process of vehicle offline detection. Compared with other detection methods, the online deviation test system is developed with high precision of laser ranging, fast response and good reliability, which can realize fast and high-precision detection of vehicle deviation. In this paper, test system software is based on the LabVIEW platform to develop, a variety of communication methods to build the communication system, using information check and queue task processing to control, to meet the test needs. Firstly, the calculation model of the deviation of the test system is established. Considering the influence of the driving angle in the measurement, the functional structure of the test system is built to determine the main functions of each part. In the system software design, it mainly includes the main test program and communication program,…

Simple Prediction for Fuel Consumption and Cruising Distance of Internal Combustion Engine Vehicles with RFD Method

AGC Inc.-Miyoko Oiwake, Yoshiichi Ozeki
Tokyo City University-Hideaki Nagano, Memori Ikeda, Itsuhei Kohri
  • Technical Paper
  • 2019-01-0893
To be published on 2019-04-02 by SAE International in United States
For the development of various parts and components of vehicles, it is inevitable to realize the effects of those structure and thermal performance on fuel consumption. However, owing to limited information for parts suppliers to obtain, it is not always easy to predict and study the fuel consumption under various driving conditions. In this report, the authors have developed an RFD (Regression Fuel-consumption Diagram) method to predict cruising performance of internal combustion engine vehicle only based on the published information to give to suppliers. The RFD method can calculate the fuel consumption based on the fuel consumption diagram which represents an engine characteristics and the control characteristics of transmission after the calculation of the driving power following a driving cycle. However, in general, the information for the fuel consumption diagram and the control characteristics of transmission are not open to the suppliers. In the RFD method, the unknown characteristics are identified from the published fuel consumption data by using standard reference models for the transmission and the fuel consumption diagram which were defined by regression…

Dielectric test methods for evaluating spark plug insulators

Fram Group Co.-Jing Zheng, Danny R. Overton, Corey Eiden, Philip Paul Treier
  • Technical Paper
  • 2019-01-0928
To be published on 2019-04-02 by SAE International in United States
Dielectric testing is essential in developing ceramic insulators for spark plugs used in modern engine platforms. Many test methods are developed for different materials and applications. At Autolite, parallel plate dielectric testing based on the ASTM standard was used for material evaluation. The paper will cover the factors that influence the measurements in these tests as well as a comparison of insulator materials from different spark plug manufacturers. Furthermore, to better evaluate the performance of final product, Autolite developed a proprietary engine dielectric test method for spark plugs. The test method is compared with most conventional tests in the automotive industry, and the performance of spark plugs using Autolite conventional and next gen ceramic will be reported.