Application Technology regarding High-Powered Electric Power Steering System

摘要

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 efficient structure.