No.1006E 2009 Application Technology regarding High-Powered Electric Power Steering System |
| Category | TECHNICAL REPORT |
|---|---|
| Author | T. TAKAHASHI H. SUZUKI T. NAKAYAMA Central JAPAN Technical Center, Steering System Operations Headquarters K. FUJIYAMA Electronics Engineering Dept. 1, Steering System Operations Headquarters S. YAMAGUCHI Electronics Engineering Dept. 2, Steering System Operations Headquarters M. YAMASHITA T. GOTO T. SAITO Steering Development Dept., Toyota Motor Corporation |
| Abstract | In response to demands in recent years for steering systems enabling improved fuel efficiency and featuring compatibility with active safety technology, we have developed a high-powered Rack-Direct Electric Power Steering System (RD-EPS®) with integrated Variable Gear Ratio Steering System (E-VGR®) for full-sized passenger vehicles. RD-EPS® consists of a ball screw type reduction gear, a rack-coaxial brushless motor and an ECU with separated voltage booster, and in development of this new steering, we achieved higher-power performance of each of these parts. The E-VGR® unit has been integrated on the EPS pinion gear upper area to achieve a compact, highly effi cient structure. |
| Keyword | EPS, high effi ciency, ball screw, brushless motor, voltage boost, variable gear ratio |
| Reference | T. SUGIMOTO, I. UNO, H. ISHIHARA, S. URANO, T. OHHASHI, T. IKEDA : JTEKT ENGINEERING JOURNAL, No.1003E (2007) 40.
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