Method and apparatus for estimating vehicle brake system efficiency

Vehicle engine torque, acceleration, deceleration and brake treadle pressure are determined (30, 32, 38). Vehicle load is calculated (34) from the engine torque and acceleration; and braking system effectiveness is calculated (42) by comparing the determined deceleration with a deceleration predicte...

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Bibliographische Detailangaben
Hauptverfasser:	L. A. CARON, R. J. YOUNGBLOOD
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL BLASTING BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL BRAKES CLUTCHES CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES COUPLINGS FOR TRANSMITTING ROTATION ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MEASURING MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICS PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT TESTING THERMAL INSULATION IN GENERAL TRANSPORTING VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	Vehicle engine torque, acceleration, deceleration and brake treadle pressure are determined (30, 32, 38). Vehicle load is calculated (34) from the engine torque and acceleration; and braking system effectiveness is calculated (42) by comparing the determined deceleration with a deceleration predicted for the calculated vehicle load and the determined brake treadle pressure. Values representative of braking system effectiveness are accumulated and evaluated to more accurately determine when braking system service is required than is possible by merely scheduling service according to the amount of elapsed time or the number of miles driven since prior service was performed.