SAE International Journal of Passenger Cars-Mechanical Systems最新文献

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Vehicle Stability Control through Optimized Coordination of Active Rear Steering and Differential Driving/Braking 通过主动后转向和差速驱动/制动的优化协调实现车辆稳定性控制

Q3 TRANSPORTATION SCIENCE & TECHNOLOGY

SAE International Journal of Passenger Cars-Mechanical Systems

Pub Date : 2018-07-05 DOI: 10.4271/06-11-03-0020

Zhou Zhou, Huang Miaohua, Zhao Ya-chao, Fangxiao Cheng

引用次数: 3

Comparison of Various Drag Reduction Devices and Their Aerodynamic Effects on the DrivAer Model 各种减阻装置的比较及其对驾驶员模型的气动影响

Q3 TRANSPORTATION SCIENCE & TECHNOLOGY

SAE International Journal of Passenger Cars-Mechanical Systems

Pub Date : 2018-07-05 DOI: 10.4271/06-11-03-0019

Junho Cho, J. Park, K. Yee, Hak-Lim Kim

引用次数: 6

Parametric Study of Asymmetric Side Tapering in Constant Cross Wind Conditions 常侧风条件下非对称侧锥的参数研究

Q3 TRANSPORTATION SCIENCE & TECHNOLOGY

SAE International Journal of Passenger Cars-Mechanical Systems

Pub Date : 2018-06-28 DOI: 10.4271/06-11-03-0018

M. Varney, M. Passmore, A. Gaylard

Copyright © 2018 SAE International. Sports Utility Vehicles (SUVs) often have blunt rear end geometries for design and practicality, which is not typically aerodynamic. Drag can be reduced with a number of passive and active methods, which are generally prioritised at zero yaw, which is not entirely representative of the “on road” environment. As such, to combine a visually square geometry (at rest) with optimal drag reductions at non-zero yaw, an adaptive system that applies vertical side edge tapers independently is tested statically. A parametric study has been undertaken in Loughborough University’s Large Wind Tunnel with the ¼ scale Windsor Model. The aerodynamic effect of implementing asymmetric side tapering has been assessed for a range of yaw angles (0°, ±2.5°, ±5° and ±10°) on the force and moment coefficients. This adaptive system reduced drag at every non-zero yaw angle tested, from the simplest geometry (full body taper without wheels) to the most complex geometry (upper body taper with wheels) with varying levels of success; providing additional drag reductions from 3% to 125%. The system also shows potential to beneficially modify the cross wind stability of the geometry.

版权所有©2018 SAE International。运动型多用途车（SUV）通常具有钝的后端几何形状，用于设计和实用性，这通常不是空气动力学。可以通过多种被动和主动方法来减少阻力，这些方法通常在零偏航时优先考虑，这并不完全代表“道路”环境。因此，为了将视觉上正方形的几何形状（静止时）与非零偏航时的最佳减阻相结合，对独立应用垂直侧边锥度的自适应系统进行静态测试。拉夫堡大学的大型风洞采用¼比例的温莎模型进行了参数研究。在力和力矩系数的偏航角范围（0°、±2.5°、±5°和±10°）内，评估了实施不对称侧锥的空气动力学效应。该自适应系统降低了测试的每个非零偏航角下的阻力，从最简单的几何形状（无车轮的全身锥度）到最复杂的几何形状（有车轮的上身锥度），成功率各不相同；从而提供从3%到125%的额外阻力减小。该系统还显示出有益地修改几何形状的侧风稳定性的潜力。

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引用次数: 7

Evaluation of the Energy Consumption of a Thermal Management System of a Plug-In Hybrid Electric Vehicle Using the Example of the Audi Q7 e-tron 插电式混合动力汽车热管理系统能耗评价——以奥迪Q7 e-tron为例

Q3 TRANSPORTATION SCIENCE & TECHNOLOGY

SAE International Journal of Passenger Cars-Mechanical Systems

Pub Date : 2018-06-18 DOI: 10.4271/06-11-03-0017

J. Menken, K. Strasser, Thomas Anzenberger, Christian Rebinger

引用次数: 7

Exhaust Manifold Thermal Assessment with Ambient Heat Transfer Coefficient Optimization 基于环境传热系数优化的排气歧管热评估

Q3 TRANSPORTATION SCIENCE & TECHNOLOGY

SAE International Journal of Passenger Cars-Mechanical Systems

Pub Date : 2018-06-04 DOI: 10.4271/06-11-03-0016

Baran Çelikten, I. Duman, C. Harman, Sinan Eroğlu

引用次数: 2

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