No.1011 2013小型・軽量化関連技術特集号 高性能新電磁クラッチを用いた第３世代電子制御AWDカップリングの開発 |
| カテゴリー | 論文 |
|---|---|
| 筆者 | 自動車部品事業本部 第2 駆動技術部 博士（工学）安藤淳二 自動車部品事業本部 第2 駆動技術部 安藤寛之 津田拓也 鈴木邦彦 新川喜弘 |
| 要旨 | This paper describes the development of the new third-generation electronically controlled all-wheel drive (AWD) coupling that achieves drastically improved drag torque performance and torque accuracy at low temperatures and contributes to higher fuel efficiency through weight reduction in the driveline. One issue for electronically controlled AWD couplings is an increase in torque due to higher lubricant viscosity at low temperatures, especially below 0℃ because of clutch slide with the lubricant sealed inside the couplings. The developed thirdgeneration electronically controlled AWD coupling addresses this issue by focusing on the surface texture of the electromagnetic clutch. The third-generation coupling also restricts the torque increase by actively utilizing the dynamic pressure between the clutch plates and increasing the clearance of the clutch plates at low temperatures where viscosity increases. This enables further weight reduction in the driveline. In order to reduce drag torque at low temperatures, a macroscopic sliding surface profi le in the order of tens of micrometers is provided on the electromagnetic clutch under fluid lubrication. In addition, to reduce control torque at low temperatures when electric current is applied, the microscopic sliding surface profi le on the electromagnetic clutch, which is in the order of several micrometers, was optimized under boundary lubrication. This results in stable torque accuracy at both low and high temperatures. |
| キーワード | All-Wheel Drive System, Gen3 ITCC, Electromagnetic Clutch, Surface Texture |
| 関連タグ |
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