Process and apparatus for controlling the braking pressure in an

Details Process and apparatus for controlling the braking pressure in an Process and apparatus for controlling the braking pressure in an

1979-07-11

1982-03-16

Smith, Jerry

Boots, shoes, and leggings

303 96, 303105, 303111, B60T 802

Patent

active

043204597

ABSTRACT:
Sensor devices detect the dynamic response of each vehicle wheel to braking pressure and produce control signals if the associated wheel rapidly decelerates, slips, or accelerates. When braking pressure is initially applied, a deceleration control signal output from the sensor associated with a low friction wheel actuates, through a co-control logic circuit network, exhaust of braking pressure on both wheels on the corresponding axle. Shortly a period of fast application of braking pressure on both wheels occurs for a preselected time interval. This application is extended, for the co-controlled wheel only, for a shorter time period established by a timer through the logic network. After a holding period for both wheels, but at different pressure levels, a brief increase in braking pressure is actuated until another deceleration signal is output by the controlled wheel sensor. This actuates an exhaust of pressure in both wheels. However, the co-controlled wheel exhaust is normally of shorter duration since a subsequent slip control signal from the controlled wheel acts only to continue to exhaust that wheel's pressure. The periods of timed application, hold, and exhaust repeat as vehicle speed is reduced.

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patent: 4059312 (1977-11-01), Jonner
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