Four-wheel steering device for vehicle

专利名称：Four-wheel steering device for vehicle发明人：Hirotaka Kanazawa,Teruhiko Takatani,Naoto

Takata

申请号：US06/5190申请日：19831025公开号：US04552239A公开日：19851112

摘要：In the four-wheeled vehicle, both the front and rear wheels are turned inresponse to operation of the steering wheel. The turning angle of the rear wheels iscontrolled in accordance with a turning angle ratio characteristic curve defined on a&thgr;F-&thgr;R plane wherein &thgr; F and &thgr;R respectively represent the turningangles of the front and rear wheels. The turning angle ratio characteristic curve issubstantially a broken line having a positive inclination in the region where the value ofthe front wheel turning angle &thgr;F is smaller than a predetermined value and having asmaller inclination in the region where the value of the front wheel turning angle &thgr;Fis larger than the predetermined value. The turning angle ratio characteristic curve ischanged according to the vehicle speed so that the turning angle ratio . theta.R/&thgr;Fis increased as the vehicle speed increases.

申请人：MAZDA MOTOR CORPORATION

代理机构：Murray, Whisenhunt & Ferguson

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