슬라이드 제목 없음 Anti Lock Brake System (County Bus, HD65,72 Truck) Learning Goals (You Can ) Understand Characteristics of the Anti Lock Brake System State Control Logic Understand how ABS Componen[.]
Anti-Lock Brake System (County Bus, HD65,72 Truck) Learning Goals (You Can…) Understand Characteristics of the Anti-Lock Brake System State Control Logic State input and output element of the system Understand System Layout and Location Understand how ABS Components are controlled, operated and checked Read trouble codes with/without Hi-Scan Pro Troubleshoot Repair ABS Table of Contents ABS General Components Description ABS Control Schematic Diagram Troubleshooting Air Bleeding Caution General Exercise What is the characteristics of the ABS? Discuss your opinion in the group and make a note of the most important items Stability Steerability Shorter emergency brake distance Drastic reduction of vehicle accidents Tire protection by avoiding brake flats, thus longer tire service time Advertising effect, e.g for tourist coaches ABS General ABS Control Cycle ABS General Exercise Question A B How To Calculate Slip Ratio ? SLIP RATIO = A-B A A : Vehicle speed B : Wheel speed x 100 ABS General Brake force coefficient µB as function of brake slip Maximum Brake Force Utilization ABS General Specification Item Description ABSCM Operational Voltage Wheel Speed Sensor Specification 16~32V Resistance 1280 ~ 1920 Ω Air Gap 0.65±0.01 mm Minimum Output 120 mV (at 30~60 rpm) Operating Pressure 200 kg/ ㎠㎠㎠ (Max 250 kg/ ㎠㎠㎠ ) Resistance Inlet Valve : 24.66±0.5 Ω Outlet Valve : 18.30±0.5 Ω Hydraulic Modulator ABS General System Layout Front DC 24v Self Diagnosis ABS Modulator Wheel speed sensor E.C.M ABS Warning Lamp Hydraulic Electric ABS General 10 Exercise : Diagram of Input / Output Please fill out input and output element on the block diagram Front Left Wheel Speed Sensor Warning Lamp Front Right Hydraulic Modulator Rear left Rear Right ECU Battery ( + ) EB Exhaust Brake Cut Relay Self Diagnosis Initiate Line Valve Relay Self Diagnosis