Motor vehicle brake pressure-regulating apparatus
First Claim
1. An apparatus which regulates brake pressure of each respective wheel brake during a brake application on a motor vehicle, having at least one fluid pressure responsive braking system supplied from a fluid pressure source, said apparatus comprising:
- (a) a brake valve positioned on such vehicle and connected to communicate such fluid pressure from such source to each of such respective wheel brakes during a brake application;
(b) at least one sensing means positioned on such vehicle, adjacent each respective wheel brake, for determining at least one preselected parameter which is indicative of an amount of brake pressure being applied to a corresponding one of such respective wheel brakes during such brake application, and for generating a signal value representative of such brake pressure;
(c) at least one electronically-controlled pressure-regulating valve, connected intermediate said brake valve and each of such respective wheel brakes, to control fluid pressure communication to a respective wheel brake associated with said regulating valve upon receipt of an appropriate command signal;
(d) an electronic control system, positioned on such motor vehicle, and connected to receive said signal value from said sensing means, and connected to transmit said command signal to said regulating valves based upon an evaluation of said signal value of said brake pressure; and
(e) a comparator associated with said electronic control system for evaluating said signal value of said brake pressure being applied to said corresponding one of such respective wheel brakes, said evaluation of said signal value of said brake pressure including comparing said signal value of said sensing device adjacent each such respective wheel with one another, and initiating a command signal to said regulating valve, corresponding to such wheel brake having a stronger signal, which will switch said regulating valve from an open position to one of a closed position and a bleed position until said stronger signal is reduced to one of a specified limit value, and a difference between said stronger signal and other signal values is substantially zero.
1 Assignment
0 Petitions
Accused Products
Abstract
A preselected parameter of the wheel brakes of a motor vehicle, to be equalized with respect to their braking force, is sensed. Such parameter is correlated with the amount of braking force being applied. A signal is generated by the preselected sensor, which is then used to control supplemental pressure-regulating valves, positioned in the brake pressure feed line to the respective wheel brakes. The parameter selected to be sensed can be, among other things, either the braking force or torque being applied or the wheel brake temperature.
65 Citations
35 Claims
-
1. An apparatus which regulates brake pressure of each respective wheel brake during a brake application on a motor vehicle, having at least one fluid pressure responsive braking system supplied from a fluid pressure source, said apparatus comprising:
-
(a) a brake valve positioned on such vehicle and connected to communicate such fluid pressure from such source to each of such respective wheel brakes during a brake application; (b) at least one sensing means positioned on such vehicle, adjacent each respective wheel brake, for determining at least one preselected parameter which is indicative of an amount of brake pressure being applied to a corresponding one of such respective wheel brakes during such brake application, and for generating a signal value representative of such brake pressure; (c) at least one electronically-controlled pressure-regulating valve, connected intermediate said brake valve and each of such respective wheel brakes, to control fluid pressure communication to a respective wheel brake associated with said regulating valve upon receipt of an appropriate command signal; (d) an electronic control system, positioned on such motor vehicle, and connected to receive said signal value from said sensing means, and connected to transmit said command signal to said regulating valves based upon an evaluation of said signal value of said brake pressure; and (e) a comparator associated with said electronic control system for evaluating said signal value of said brake pressure being applied to said corresponding one of such respective wheel brakes, said evaluation of said signal value of said brake pressure including comparing said signal value of said sensing device adjacent each such respective wheel with one another, and initiating a command signal to said regulating valve, corresponding to such wheel brake having a stronger signal, which will switch said regulating valve from an open position to one of a closed position and a bleed position until said stronger signal is reduced to one of a specified limit value, and a difference between said stronger signal and other signal values is substantially zero. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. An apparatus which regulates brake pressure of each respective wheel brake during a brake application on a motor vehicle, having at least one electronically-controlled fluid pressure responsive braking system supplied from a fluid pressure source, said apparatus comprising:
-
(a) a brake application means positioned on such vehicle for generating a brake application signal when activated by an operator of such vehicle; (b) at least one sensing means positioned on such vehicle, adjacent each respective wheel brake, for determining at least one preselected parameter which is indicative of an amount of brake pressure being applied to a corresponding one of such respective wheel brakes during such brake application, and for generating a signal value representative of such brake pressure; (c) at least one electronically-controlled pressure modulating valve disposed on such vehicle, adjacent each respective wheel brake, for supplying fluid pressure to a corresponding wheel brake upon receipt of a brake signal; (d) at least one electronically-controlled pressure-regulating valve, connected to said modulating valve, to control supply of fluid pressure to such respective wheel brake through said modulating valve upon receipt of an appropriate command signal; (e) an electronic control system positioned on such vehicle and connected to receive said brake application signal from said brake application means and said signal value representative of such brake pressure, and connected to transmit said brake signal to said modulating valve upon receipt of said brake application signal and said command signal to said regulating valves based upon an evaluation of said signal value of such brake pressure; and (f) a comparator associated with said electronic control system for evaluating said signal value of said brake pressure being applied to said corresponding one of such respective wheel brakes, said evaluation of said signal value of said brake pressure including comparing said signal value of said sensing device adjacent each such respective wheel with one another, and initiating a command signal to said regulating valve, corresponding to such wheel brake having a stronger signal, which will switch said regulating valve from an open position to one of a closed position and a bleed position until said stronger signal is reduced to one of a specified limit value, and a difference between said stronger signal and other signal values is substantially zero. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
-
Specification