Patent ID: 6089677
Filing Date: 2000-07-18
Classification: B60K,B60T

Abstract:
A braking force control apparatus for an automotive vehicle drive train including an engine and at least one traction road wheel driven by the engine, the apparatus comprising:a source of braking fluid;a hydraulic circuit fluidly disposed between said source of braking fluid and the at least one traction road wheel;said hydraulic circuit including an electromagnetic valve that controls a supply of braking fluid to and discharge of braking fluid from the at least one traction road wheel in response to a control signal to establish braking pressure applied to the at least one traction road wheel; anda control unit operatively coupled with said electromagnetic valve; whereinsaid control unit determines a target braking force to be applied to the at least one traction road wheel in response to an operator's brake demand;said control unit determines a target brake torque in response to said determined target braking force and a drive torque applied to the at least one traction road wheel;said control unit determines a desired braking pressure in response to said determined target brake torque;said control unit develops said control signal in response to said determined desired braking pressure;said control unit applies said control signal to said electromagnetic valve to adjust braking pressure to said determined desired braking pressure; andsaid control unit determines said target brake torque such that said target brake torque is proportional to the sum of said determined target braking force and the drive torque applied to the at least one traction road wheel.