Motor vehicles – Including one or more ski-like or runner members – With at least one surface-engaging propulsion element
Patent
1989-06-28
1991-10-29
Marmor, Charles A.
Motor vehicles
Including one or more ski-like or runner members
With at least one surface-engaging propulsion element
180132, 280 91, B62D 506
Patent
active
050607430
ABSTRACT:
A four-wheel steering system for an automotive vehicle includes a front wheel steering mechanism operable in response to a steering effort applied thereto to steer a pair of dirigible front road wheels, a rear wheel steering mechanism arranged to steer a pair of dirigible rear road wheels in response to steerage of the front road wheels, and a control apparatus arranged to control the rear wheel steering mechanism in such a manner that the rear road wheels are retained in their neutral positions when the front road wheels are steered at an angle less than a predetermined small angle and that the rear road wheels are steered in an opposite direction relative to the front road wheels when the front road wheels are steered at a larger angle than the predetermined small angle. The control apparatus is further arranged to control the rear wheel steering mechanism in such a manner that a changing rate of the rear wheel steering angle per a unit steering angle of the front road wheels increases in accordance with an increase of the front wheel steering angle.
REFERENCES:
patent: 4657102 (1987-04-01), Kanazawa et al.
patent: 4860845 (1989-08-01), Janson
Aga Masami
Kajiwara Takashi
Oda Susumu
Tajima, deceased Naoki
Kagen Alan M.
Marmor Charles A.
Toyota Jidosha & Kabushiki Kaisha
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