Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1991-11-19
1993-09-21
Graham, Matthew C.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
303100, 36442602, B60T 868
Patent
active
052462790
ABSTRACT:
An assumed vehicle body speed is determined on the basis of the wheel speed detected by a wheel speed sensor for each wheel and a slip value indicating the tendency of locking the wheel is determined for a predetermined wheel speed on the basis of the assumed vehicle body speed and a wheel speed of the predetermined wheel. The braking force is controlled on the basis of the slip value. When no braking force is controlled and when at least one of the wheel speeds for all the wheels detected by the wheel speed sensors is larger than the assumed vehicle body speed previously determined, a new assumed vehicle body speed which follows is inhibited from being renewed to a larger value and the new assumed vehicle body speed is set as a value equal to the previous assumed vehicle body speed.
REFERENCES:
patent: 4089564 (1978-05-01), Oberg
patent: 4774668 (1988-09-01), Matsubara et al.
patent: 4787682 (1988-11-01), Muto
patent: 4802711 (1984-02-01), Muto et al.
patent: 4807941 (1989-02-01), Onogi et al.
patent: 4912744 (1990-03-01), Hurst
Kurihara Yoji
Nobumoto Kazutoshi
Onaka Toru
Tsuyama Toshiaki
Graham Matthew C.
Mazda Motor Corporation
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