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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2019/189094
Kind Code:
Provided is a steering system that is capable of, with a simple structure, enhancing the straight-line traveling stability of a vehicle and that is also capable of enhancing the fuel efficiency. A steering system (101) is provided with: a first steering apparatus (11) that causes wheels to be steered in accordance with a steering-amount instruction; a second steering apparatus (150) that includes a mechanical part (150a) that causes left and right wheels to be separately steered by being driven by steering actuators provided in tire housings (105) of a vehicle, and a control unit (150b) that controls the steering actuators; and a vehicle information detecting unit (110) that detects vehicle information including vehicle speed and steering angle. The control unit (150b) includes: a determining means (33) for determining, from the steering angle, whether or not the vehicle is in a straight-line traveling state; and a vehicle-speed-responsive toe-angle controlling means (34) for, when the determining means (33) determines that the vehicle is in a straight-line traveling state, controlling toe angles of the left and right wheels by controlling the steering actuators in accordance with the vehicle speed.

ISHIHARA, Norio (1578 Higashikaizuka, Iwata-sh, Shizuoka 10, 〒4388510, JP)
OOHATA, Yuusuke (1578 Higashikaizuka, Iwata-sh, Shizuoka 10, 〒4388510, JP)
UTSUNOMIYA, Satoshi (1578 Higashikaizuka, Iwata-sh, Shizuoka 10, 〒4388510, JP)
OOBA, Hirokazu (1578 Higashikaizuka, Iwata-sh, Shizuoka 10, 〒4388510, JP)
Application Number:
Publication Date:
October 03, 2019
Filing Date:
March 26, 2019
Export Citation:
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NTN CORPORATION (3-17, Kyomachibori 1-chome Nishi-ku, Osaka-sh, Osaka 03, 〒5500003, JP)
International Classes:
B62D7/09; B60G7/00; B60G17/015; B62D5/04; B62D6/00; B62D7/08; B62D101/00; B62D109/00; B62D111/00; B62D113/00; B62D131/00; B62D137/00
Domestic Patent References:
Foreign References:
Other References:
ISHIHARA NORIO: "Hub bearing with front wheel active steering function to improve vehicle motion performance", JSAE ANNUAL SPRING, 21 May 2018 (2018-05-21), pages 1 - 6
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (Higobashi Nittai Bldg, 10-2 Edobori 1-chome, Nishi-ku, Osaka-sh, Osaka 02, 〒5500002, JP)
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