International Journal of Automotive Engineering
Online ISSN : 2185-0992
Print ISSN : 2185-0984
ISSN-L : 2185-0992
Volume 8, Issue 1
Displaying 1-4 of 4 articles from this issue
Technical Paper
  • Hirofumi Onishi, Kelly Wu, Kazuo Yoshida, Takeshi Kato
    2017 Volume 8 Issue 1 Pages 1-6
    Published: 2017
    Released on J-STAGE: February 08, 2017
    Recently, cyber-risks in modern intelligent vehicles have become concerns to society. First, carry-in devices, such as smart-phones and USB-memory-devices used outside of vehicles expose vehicles to various cyber-attacks from the external IT (Information Technology) world. Next, Global Navigation Satellite Systems (GNSS) which provide position information to many valuable functions have vulnerabilities to jamming and spoofing. Finally, emerging vehicle-to-vehicle communication poses security challenges, because of its unique communication schema where all neighboring vehicles exchange data within a short duration. In this report, we examine these vulnerabilities’ impact on vehicle cyber-security and introduce various countermeasures against these vulnerabilities in the US.
    Download PDF (1468K)
Research Paper
Technical Paper
  • - CFD Approach on Moving Belt Dimensions -
    Christopher Collin, Thomas Indinger, Jörg Müller
    2017 Volume 8 Issue 1 Pages 15-21
    Published: 2017
    Released on J-STAGE: March 02, 2017
    For the wind tunnel testing of race car aerodynamics, it is essential to cover the real underbody flow field characteristics, as they affect the aerodynamic balance of race cars and, hence, the transferability of wind tunnel measurements to on-road conditions. In this study, numerical simulations have been performed to determine the influence of moving belt dimensions on the aerodynamic forces for a particular race car. The results are compared with an infinitely large moving ground in open road conditions. Thus, the requirements for the dimensioning of a single belt moving ground simulation in wind tunnels for race car aerodynamics are derived.
    Download PDF (1307K)
  • - Advances in Efficiency, Power Density and Robustness -
    Francis van der Sluis, Dirk Twisk, Michel van de Sanden
    2017 Volume 8 Issue 1 Pages 22-29
    Published: 2017
    Released on J-STAGE: March 28, 2017
    Continuously Variable Transmission (CVT) technology is spreading. Fuel consumption is a key driver. Next to driveline synergy optimizations the improvement of CVT components is mandatory to comply with increasing demands. Pushbelt development within Bosch focuses on measures that support both directions. The latest pushbelt release contains measures that improve variator efficiency and ratio coverage at increased torque capacity and wear resistance. This paper explains these measures and their working mechanisms. The newly developed pushbelt combines enhancements in fuel efficiency and power density in a recently released transmission where it supports the world’s largest CVT ratio coverage of 8.7(1).
    Download PDF (1422K)