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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.

 
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Assessment of Automotive Environmental Noise on Mobile Phone Hands-Free Call Quality

FEV North America, Inc.-Jeffrey Pruetz, Channing Watson, Todd Tousignant, Kiran Govindswamy
Published 2019-06-05 by SAE International in United States
Environmental noises such as wind, road, powertrain, and HVAC noise are important aspects to consider when implementing a hands-free terminal for mobile phone calling from within a car. Traditionally, these environmental noises have been exclusively considered for driver comfort; however, with the introduction of the hands-free terminals (HFT) and increasing consumer demand relative to mobile phone call quality, a broader implication of high background noise levels should be considered. HFT algorithm development and implementation can and does provide a high level of background noise suppression to mitigate these concerns, but this is often done at the expense of computational power and cumulative delay during a phone call. The more advantageous solution would be to address the problem from a source and path perspective with emphasis on reduction of noise in the frequency bands which most influence call quality performance. The assessments shown throughout this paper establish a sensitivity of HFT call quality to background noise levels based on industry-standard metrics, including those defined by International Telecommunication Union (ITU) standards. These assessments were established based on…
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Structure-Borne Prediction on a Tire-Suspension Assembly Using Experimental Invariant Spindle Forces

Siemens Industry Software NV-Jesús Ortega Almirón, Fabio Bianciardi, Patrick Corbeels
Published 2019-06-05 by SAE International in United States
Road induced noise is getting more and more significant in context of the electrification of the powertrain. The automotive industry is seeking for technologies to predict the contribution of vehicle components upfront, early in the development process. Classical Transfer Path Analysis (TPA) is a well-established technique that successfully identifies the transmission paths of noise and vibration from different excitation sources to the target responses. But it has a drawback: it requires the physical availability of the full vehicle. To achieve shorter development cycles, to avoid costly time-consuming design iterations and due to the limited availability of prototypes, engineers derived a method that addresses these requirements. Component-based TPA is a relatively new structure borne substructuring approach that allows to characterize the source excitation by a set of equivalent loads (blocked forces) independently from the receiver structure and to predict its behavior when coupled to different receivers. Frequency Based Substructuring, FBS, is applied in order to obtain the coupled assembly. However, there are a number of challenges affecting its applicability, such as the proper modelling of the…
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Acoustic Effects of Lightweighting in a Sport Utility Vehicle

Autoneum North America, Inc.-Andrea Lynne Frey
Published 2019-06-05 by SAE International in United States
Weight reduction is a significant concern for automotive manufacturers, and is often achieved by removing as much mass as is safe from the structure of the vehicle. This has a negative effect on the interior acoustics, which has become more and more of an issue as technology has advanced and people expect to be able to do business and consume media in their vehicles. Traditional acoustic treatment tends to be very heavy, which eliminates some of the weight savings.Recently a vehicle study was performed to determine if the current production sound package in a highly-rated sport utility vehicle could be maintained or improved while reducing the weight. This paper presents the results of that study. The study focused on road noise transmitted through the floor (carpet, rear wheelhouse inner and trunk insulation) and engine noise transmitted through the dash (dash inner). Testing was performed both at the vehicle level on the road and at the component level in the laboratory. It was found that the lightweight sound package was highly effective against road noise, but…
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New platform, chic sheetmetal for tech-centric 2020 Range Rover Evoque

Automotive Engineering: May 2019

Stuart Birch
  • Magazine Article
  • 19AUTP05_16
Published 2019-05-01 by SAE International in United States

The new-generation Range Rover Evoque is loaded with luxury and lots of electronic safety systems to bring comfort, in every sense, to its driver. But why does it still need the outlandish offroad prowess Jaguar Land Rover demonstrated at its media launch when most examples are likely to spend their working lives in the city or cruising freeways?

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Detection of Potholes and Speedbumps by Monitoring Front Traffic

Manipal Institute of Technology-Amit Jindal
Mercedes Benz R&D India-Karthikeyan Nagarajan
Published 2019-04-24 by SAE International in United States
This article proposes a novel method for detecting potholes and speed bumps by monitoring the front traffic when the road is not visibly seen. The existing camera-based systems in the car directly scan the road surface and estimate the road profile. The main disadvantage of the current technology is that it is not possible to detect the road profile when the road is not clearly visible. This can happen in situations when roads are waterlogged or have occluded bumps and in low light conditions. In thisarticle, the proposed method for detecting potholes or speed bumps by monitoring the vertical movement of the front traffic can enhance the existing algorithm by overcoming the abovementioned disadvantage. However, the method works only when there is traffic ahead of the system vehicle. The method makes level 3 and above autonomous driving more robust in terms of comfort and safety by estimating the road profile in the abovementioned road conditions. The method uses an object localization algorithm and optical flow to determine the motion vectors of vehicles. The histogram of…
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Volumetric Rating of Excavator Mounted, Bucket Linkage Operated Grapples

MTC C5, Excavators
  • Ground Vehicle Standard
  • J2754_201904
  • Current
Published 2019-04-15 by SAE International in United States
No Abstract Available.
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On-Track Measurement of Road Load Changes in Two Close-Following Vehicles: Methods and Results

Argonne National Laboratory-Michael Duoba, Alejandro Fernandez Canosa
Published 2019-04-02 by SAE International in United States
As emerging automated vehicle technology is making advances in safety and reliability, engineers are also exploring improvements in energy efficiency with this new paradigm. Powertrain efficiency receives due attention, but also impactful is finding ways to reduce driving losses in coordinated-driving scenarios. Efforts focused on simulation to quantify road load improvements require a sufficient amount of background validation work to support them. This study uses a practical approach to directly quantify road load changes by testing the coordinated driving of two vehicles on a test track at various speeds (64, 88, 113 km/h) and vehicle time gaps (0.3 to 1.3 s). Axle torque sensors were used to directly measure the load required to maintain steady-state speeds while following a lead vehicle at various gap distances. Through trial and error, test methods were developed that appear to provide satisfactory results, considering the challenges of track testing under real-world conditions (wind, weather, temperature changes, etc.). We found that total road load was reduced by about 10-12% at an optimum gap time of 0.25 to 0.4 s. Challenges…
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Research on Dynamic Load of Belgian Event Based on Virtual Proving Ground

CATARC-Jiansen Yang, Xinyu Wang, Xin Li
Published 2019-04-02 by SAE International in United States
The fatigue load spectrum of the physical proving ground is the necessary input for fatigue life analysis of vehicle parts and components. It is usually obtained by Road Load Data Acquisition (RLDA) and loads decomposition using multi-body dynamics tools. Virtual Proving Ground (VPG) methodology is gradually replacing this technical strategy. The belgian road is the typical event in durability test, in this paper, the flexible body and FTire model are applied to the vehicle multi-body dynamics model in order to improve the simulation accuracy. The result shows that all the wheel center force, shock absorber displacement and axial force acquired by VPG simulation have excellent correlation with real vehicle measured data. It is also proved that the virtual proving ground technology is a reliable and effective method to obtain the fatigue load spectrum in the early stage of development.
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On the Mechanical Design of the Rolling Road Addition to the CSUF Wind Tunnel

California State University, Fullerton-Ramitha Edirisinghe, Salvador Mayoral
Published 2019-04-02 by SAE International in United States
For ground effect aerodynamic studies in wind tunnels, boundary layer growth over the floor of the test section is a large concern. Many different techniques have been used to remove this boundary layer, of which creating a moving ground plane is considered the best option. By creating a moving floor in the test section, the ground plane speed can be set to that of the free stream air speed, thus removing the boundary layer or at the very least mitigating the boundary layer growth. Several studies detail the aerodynamic design concerns for such devices, but little information exists on the mechanical design concerns. This work reviews lessons learned during a design study of a rolling road for the wind tunnel at California State University, Fullerton (CSUF) mainly focusing on the motor specification and cooling system design. First, an overview of the major systems that comprise a rolling road apparatus are given. Then, initial constraints and free-body diagrams are presented detailing the forces experienced by the rolling road. From these free-body diagrams, analytical equations are presented…
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