Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1984-06-04
1986-06-10
Stoner, Jr., Bruce H.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
303111, B60T 864, B60T 870
Patent
active
045939551
ABSTRACT:
To prevent erroneous operation of a wheel anti-skid or anti-brake lock system which is arranged to compensate for yaw of the vehicle if the wheels at the respective sides of the vehicle operate on portions of a road surface of widely different roughness, e.g. one side of the vehicle on a dry road track and the other side on ice or snow, upon movement of the vehicle through a curve during which a brake is applied, so that the yaw-prevention portion of the system might erroneously recognize movement through the curve as yaw, that is, rotation about a vertical axis through the vehicle, an accelerometer (36') is provided, connected to sense transverse acceleration of the vehicle, e.g. about a vertical axis, and inhibiting application of the yaw-preventing signals to the automatic braking system. Application of the yaw-preventing signals is inhibited by including an AND-gate (36, 35) in the yaw-preventing circuits (31, 30) so that, unless the AND-gate is enabled, signals from the yaw-prevention circuit will not be transmitted.
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patent: 4489382 (1984-12-01), Jonner et al.
Oberley Alvin
Robert & Bosch GmbH
Stoner Jr. Bruce H.
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