Electronic brake monitoring system and method
First Claim
1. In a braking system for a motorized vehicle having at least one fluid brake including a brake engaging means and a pressurized fluid chamber exerting fluid pressure on said engaging means to cause the engaging means to extend forward upon actuation of a brake pedal in order to exert pressure on a braking means that is connected to the engaging means, the improvement comprising:
- means for sensing the fluid pressure exerted by the fluid chamber on the engaging means in order to cause the engaging means to extend forward toward the braking means;
means for measuring the distance the engaging member is extended from the fluid chamber toward the braking means; and
means for determining from said sensed fluid pressure and said measured engaging means distance the adjustment status of said fluid brake.
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Accused Products
Abstract
A brake monitoring system for a motorized vehicle having fluid brakes including a pressurized fluid chamber and brake engaging apparatus. Sensors are provided to measure the required fluid pressure exerted by the fluid chamber on the engaging apparatus to bring about braking of the vehicle. Measurement is also made of the distance the engaging apparatus is extended from the fluid chamber in braking. Apparatus is further provided to determine from the measured fluid pressure and measured engaging distance whether the brakes are properly adjusted.
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Citations
15 Claims
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1. In a braking system for a motorized vehicle having at least one fluid brake including a brake engaging means and a pressurized fluid chamber exerting fluid pressure on said engaging means to cause the engaging means to extend forward upon actuation of a brake pedal in order to exert pressure on a braking means that is connected to the engaging means, the improvement comprising:
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means for sensing the fluid pressure exerted by the fluid chamber on the engaging means in order to cause the engaging means to extend forward toward the braking means; means for measuring the distance the engaging member is extended from the fluid chamber toward the braking means; and means for determining from said sensed fluid pressure and said measured engaging means distance the adjustment status of said fluid brake. - View Dependent Claims (2, 3, 4)
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5. A braking system for a motorized vehicle having at least one fluid brake including a pressurized fluid chamber which extends a pushrod that exerts pressure on a slack adjuster activating a braking means that is connected to the slack adjustor, comprising:
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means for sensing the fluid pressure exerted by the fluid chamber on said pushrod causing said pushrod to be extended toward the slack adjuster; means for measuring the distance the pushrod is extended from said fluid chamber toward said slack adjustor, moving said slack adjuster by a like amount; and means for determining from said sensed fluid pressure and measured pushrod distance whether said brake is out of adjustment. - View Dependent Claims (6, 7, 8, 9, 10)
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11. An electronic braking system for a motorized vehicle having air brakes, the air brakes including a pressurized air chamber having a pushrod which exerts pressure on a slack adjuster turning the slack adjuster which is connected to a braking member, whereby the braking member is placed in contact with a brake drum causing the motorized vehicle to brake, comprising:
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means for sensing the air pressure exerted by the air chamber on the pushrod to extend the pushrod; means for measuring the distance the pushrod is extended from the air chamber; means for tabulating said sensed air pressure and measured pushrod distance; and means for determining from said tabulation whether the air brakes are out of adjustment.
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12. A method of braking for a motorized vehicle having at least one fluid brake including a pressurized fluid chamber having an engaging means which exerts pressure on a braking means that is connected to the engaging means, whereby brake shoes of the braking means are placed in contact with a brake drum causing the motorized vehicle to brake, comprising the steps of:
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sensing the fluid pressure exerted by the fluid chamber on the engaging means causing the engaging means to be extended toward the braking means; measuring the distance the engaging member is extended from the fluid chamber toward the braking means; and determining from said sensed fluid pressure and measured engaging means distance whether the brake is out of adjustment. - View Dependent Claims (13, 14, 15)
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Specification