Transcription of Trailer ABS Training - WABCO
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WabcoWABCOTRAILER ABSTRAILER ABSTRAILER ABSTRAILER ABSTRAILER ABSDate:Name:Company:wabcoCONTENTS page1 .. Tyre/Road Adhesion Characteristics2 .. Typical ABS Control Cycle3 .. Vario-C Basic Concept4 .. self Steering Axles and ABS5 .. Tri-Axle Semitrailer 6S/3M - piping6 .. Tri-Axle Semitrailer 6S/3M - wiring7 .. Boxer Concept8 .. Boxer ABS - Power Supply and W/L Wiring9 .. Sensor and Relay Modulator - plug connections10 .. Sensor and Relay Modulator - channel assignment11 .. ISO 7638 Power Supply12 .. ISO 7638 Assembly Details13 .. Three-way Power Supply14 .. Typical Sensor Installation15 .. Sensor Output Signal - graph16 .. Sensor Output Signal - text17 .. ABS Warning Lamp18 .. Vario-C2 Initialisation19 .. Polewheel Handling20 .. Polewheel and Sensor Check21 .. ECU s and Welding22 .. Common Faults23 .. Helpful Advice24 .. Useful Datawabcopage 1 ABS Control Theorywabcopage 2notes:Typical Tyre/Road Wheel slip (lambda)Braking coefficient BDry concreteWet concreteIcestableregionunstableregion B Wheel slip (lambda)Cornering coefficient SBraking coefficient Bwabcopage 3notes:Typical ABS Control Cycle (ii)Wheel speedReference speedVehicle speed 1 2 Speedstime (t)Solenoidcontrol valveWheel circumferentialaccelerationPressure in wheelcylinderT1T2inlet valveexhaust valve+b-b123 45 6789time (t)time (t)time (t)time (t)wabcopage 4 Typical ABS Control Cycle (i)In t
page 12 wabco notes: 1) The blue channel is normally on the vehicle LH side 2) The yellow channel is normally on the vehicle RH side 3) If the red channel is used it …
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