Slide Brake_System training potx

Diagnosis Technician >> Brake >> Brake System Brake System Construction (1/1) 6. Parking brake 5. Disc brake 1. Brake pedal 2. Brake booster 3. Master cylinder 4. Proportioning valve (1) Disc brake (2) Disc brake Diagnosis Technician >> Brake >> Brake System Master Cylinder General & Construction (1/3) 1.General/2.Construction Minimum (5) Rubber piston cups (7) Fluid level sensor (6) Reservoir tank (1) No.1 piston (2) No.1 return spring (3) No.2 piston (4) No.2 return spring Diagnosis Technician >> Brake >> Brake System Master Cylinder General & Construction (2/3) 3. Principles Fulcrum Principle of the lever Wheel cylinder The principle of the lever is applied by the brake pedal as follows. A B F1 × A = F2 × B ∴ F2 = F1 × F1: Pedal force F2: Push rod output force A1: Distance from center of brake pedal to fulcrum B: Distance from push rod to fulcrum Operating force: Push rod b F2 A B F1 a Pascal’s law Master cylinder 5 cm 2 10 cm 2 2000 N 8 cm 40 cm 400 N Same pressure (2000 kPa) 4000 N 2000 N 1000 N 10 cm 2 20 cm 2 b B A B a A B A a: Amount of movement of pedal edge b: Amount of movement of push rod Amount of movement: = ∴a = b × ∴b = a × Diagnosis Technician >> Brake >> Brake System Master Cylinder General & Construction (3/3) 4.Types of brake lines Front FR vehicle FF vehicle Front Diagnosis Technician >> Brake >> Brake System Master Cylinder Operation (1/4) 1.Normal operation No.2 return spring FF vehicle to front side No.1 return spring to Rear side No.2 piston Compensating port Inlet port No.1 piston No.1 piston cup Stopper bolt No.2 piston cup Diagnosis Technician >> Brake >> Brake System Master Cylinder Operation (2/4) Brake pedal depressed (1) to Front side to Rear side No.2 piston Compensating port Piston cup No.1 piston Brake pedal depressed (2) Diagnosis Technician >> Brake >> Brake System Master Cylinder Operation (3/4) Brake pedal released (1) to Front side to Rear side Inlet port Piston cup Compensating port Orifices Brake pedal released (2) Diagnosis Technician >> Brake >> Brake System Master Cylinder Operation (4/4) to Front side to Rear side No.1 piston Contact No.2 piston Diagnosis Technician >> Brake >> Brake System Master Cylinder Operation (4/4) to Front side to Rear side No.1 piston Piston contacts wall No.2 piston Diagnosis Technician >> Brake >> Brake System Brake Booster General & Construction (1/1) (12) Constant pressure chamber (5) Diaphragm (3) Booster piston (7) Valve body (8) Reaction disc 1.General/ 2.Construction (13) Check valveVacuum Brake master cylinder (10) Body seal (2) Push rod (4) Booster body (6) Diaphragm spring (11) Variable pressure chamber Air (1) Valve operating rod (9) Air cleaner (10) Body seal HINT: Tandem brake booster . >> Brake >> Brake System Brake System Construction (1/1) 6. Parking brake 5. Disc brake 1. Brake pedal 2. Brake booster 3. Master cylinder 4. Proportioning valve (1) Disc brake (2) Disc brake Diagnosis. >> Brake >> Brake System Master Cylinder General & Construction (3/3) 4.Types of brake lines Front FR vehicle FF vehicle Front Diagnosis Technician >> Brake >> Brake System Master. Technician >> Brake >> Brake System Master Cylinder Operation (4/4) to Front side to Rear side No.1 piston Contact No.2 piston Diagnosis Technician >> Brake >> Brake System Master