Thermal Behaviors and Lubrication Properties in Rotary Blade Coupling of Sports Utility Vehicles

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概要

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• This study attempts to improve the local high temperature distributions in rotary-blade-coupling (RBC), which is the source of motive power for sport-utility-vehicles (SUV). The experiment takes RBC with forced convection and circumferential ribs for the research on heat transfer enhancement. During rotation, RBC produces centrifugal fluid flow, convection phenomenon and temperature distributions that differ with rotational speed. Simultaneously, rotation enhances the turbulence intensity of the flow field, promoting heat transfer and destabilizing Taylor vortices. This instability influences the local heat transfer distribution and damages the machine parts because of overheating. To analyze the actual convection of the rotary flow field, the experiment testing section is designed based on the actual size of the RBC. In the experiment, the RBC is cooled via forced exterior oil supply, and ring-shaped turbulence ribs of three aspect ratios (AR=5/3, 2.5, and 10/3) are added to augment the heat transfer area, for discussing the axial temperature distributions at the top and bottom of the RBC. The experiment adopts major physical parameters within 2.856×10^5≤Ta≤2.031×10^6 and 0.053≤Re≤1.054 to discuss the heat transfer effect in the interior rotary flow distribution groove of RBC in the four-wheel-drive (4WD) vehicle. Finally, based on the relevant experimental results, an empirical correlation is established for the reference of 4WD vehicle designers.

• 一般社団法人日本機械学会の論文
• 2006-08-15

著者

• Huang Kuohsiu

  Department Of Vehicular Engineering National Taipei University Of Technology

• Ma Wei-ping

  Department Of Computer Application Engineering Lan Yang Institute Of Technology

• Tzeng Sheng-chung

  Department Of Mechanical Engineering Chienkuo Technology University

• WU Tai-Sheng

  Graduate School of the Vehicular Engineering, Dayeh University

• Wu Tai-sheng

  Graduate School Of The Vehicular Engineering Dayeh University

• Wu Tai-Sheng

  Graduate Institute of Vehicular Engineering, Dayeh University, Changhua 500, Taiwan, R.O.C.

関連論文

• Thermal Behaviors and Lubrication Properties in Rotary Blade Coupling of Sports Utility Vehicles
• Flow Structure in an Inner Rotating Annular Channel with Ribbed Wall Cylinder

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