Hệ thống phanh ABS P2

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Tiểu luận điều khiển tự động hệ thống phanh ABS Antilock Braking System

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Nội dung Text: Hệ thống phanh ABS P2

Diagnosis Technician >> Brake >> ABS, EBD and BA Operation Brake Actuator Brake master cylinder ABS & VSC & TRC & BA brake actuator Pressure sensor Brake assist switching valve OFF Skid Control Check Port a valve 1 ECU OFF OFF Holding valve Holding valve Check valve 2 Port b Pump OFF OFF (OFF) Check valve 3 Reduction valve Reduction valve Reservoir Front Rear Speed sensor Speed sensor (2/3)
Diagnosis Technician >> Brake >> ABS, EBD and BA Operation Brake Actuator Brake master cylinder ABS & VSC & TRC & BA brake actuator Pressure sensor Brake assist switching valve OFF Skid Control Check Port a valve 1 ECU ON ON Holding valve Holding valve Check valve 2 Port b Pump ON OFF (ON) Check valve 3 Reduction valve Reduction valve Port e Reservoir Front Rear Speed sensor Speed sensor (2/3)
Diagnosis Technician >> Brake >> ABS, EBD and BA Operation Brake Actuator Brake master cylinder ABS & VSC & TRC & BA brake actuator Pressure sensor Brake assist switching valve OFF Skid Control Check Port a valve 1 ECU ON ON Holding valve Holding valve Check valve 2 Port b Pump OFF OFF (ON) Check valve 3 Reduction valve Reduction valve Port e Reservoir Front Rear Speed sensor Speed sensor (2/3)
Diagnosis Technician >> Brake >> ABS, EBD and BA Operation Brake Actuator Brake master cylinder ABS & VSC & TRC & BA brake actuator Pressure sensor Brake assist switching valve OFF Skid Control Check Port a valve 1 ECU OFF OFF Holding valve Holding valve Check valve 2 Port b Pump OFF OFF (ON) Check valve 3 Reduction valve Reduction valve Reservoir Front Rear Speed sensor Speed sensor (2/3)
Diagnosis Technician >> Brake >> ABS, EBD and BA Operation Brake Actuator 3. Inspection method SST Hand-held tester SST Battery Hand-held tester Harness on the SST side Harness on the vehicle side (3/3)
Diagnosis Technician >> Brake >> ABS, EBD and BA Types of Brake Actuator Hydraulic Circuit Master cylinder Flow control valve ABS actuator Check valve Pump Check valve Speed sensors Reservoir ABS 2-position ECU solenoid valve Front left Rear right Rear left Front right (1/1)
Diagnosis Technician >> Brake >> ABS, EBD and BA Types of Brake Actuator Hydraulic Circuit 1. 2-position solenoid valve (4) with flow control Master cylinder valve (4) Flow control valve ABS actuator Check valve Pump Check valve Speed sensors Reservoir ABS 2-position ECU solenoid valve Front left Rear right Rear left Front right (1/1)
Diagnosis Technician >> Brake >> ABS, EBD and BA Types of Brake Actuator Hydraulic Circuit 2. 2-position solenoid valve (6) with pressure increase valve (2) Master cylinder Pressure increase ABS actuator valve Front main solenoid valve Check valve Pump Rear solenoid Check valve valve Speed Reservoir sensors Front sub- solenoid valve ABS ECU Front left Rear right Rear left Front right (1/1)
Diagnosis Technician >> Brake >> ABS, EBD and BA Types of Brake Actuator Hydraulic Circuit 3. 3-position solenoid valve (3) with mechanical valve (1) Master cylinder 3-position solenoid valve ABS actuator Check valve Pump Check valve Reservoir Speed sensors ABS ECU Mechanical valve Front left Rear right Rear left Front right (1/1)
Diagnosis Technician >> Brake >> ABS, EBD and BA Types of Brake Actuator Hydraulic Circuit 4. 3-position solenoid valve (4) Master cylinder ABS actuator 3-position solenoid valve Check valve Pump Check Speed valve sensors Reservoir ABS ECU Deceleration sensors Front left Rear right Rear left Front right *Some models only (1/1)
Diagnosis Technician >> Brake >> ABS, EBD and BA ABS with EBD Control 1. General/ 2. Operation Front / Rear wheels brake force distribution Ideal distribution Braking force distribution under heavy load at the distribution control of front-rear braking force Rear braking force Ideal distribution Amount of the Under heavy load under light load braking fore improvement under heavy load Under light load When the braking force distribution of front-rear is fixed Front braking force Right / Left wheels brake force distribution (During cornering braking) During cornering braking (1/1)
Diagnosis Technician >> Brake >> ABS, EBD and BA BA (Brake Assist) Control 1. General System Diagram Speed sensor Brake actuator Master cylinder Skid Control pressure sensor ECU ABS warning Stop light switch light Braking force with BA without BA Time (1/2)
Diagnosis Technician >> Brake >> ABS, EBD and BA BA (Brake Assist) Control 2. Operation Brake master cylinder ABS & VSC & TRC & Emergency brake BA brake actuator Pressure sensor relief Valve 4 Brake assist switching valve ON Skid Control Check Valve 1 ECU OFF OFF Holding valve Holding valve Check Valve 2 Pump OFF OFF (ON) Check Valve 3 Reduction valve Reduction valve Check Valve 5 Reservoir Front Rear Speed sensor Speed sensor (2/2)
Diagnosis Technician >> Brake >> ABS, EBD and BA
Diagnosis Technician >> Brake >> ABS, EBD and BA Construction When the Skid Control ECU has Failed Combination meter ECU from Power source system ABS WA Brake BRL ABS warning light WA Service connector ABS control relay ABS actuator Motor relay Pump motor Solenoid relay ECU RF SOL LF SOL RR SOL LR SOL (1/1)