„HYDRAULIC BRAKE SYSTEM MASTER CILYNDER“

Atliko: PT-8 gr. stud.

Sigitas Kriuka

Panevėžys, 2010

Each car has the brakes and probably would be hard to imagine that if the motion of the car at 40 kilometers per hour should be suspended without brakes. Vehicle braking system ensures safer driving and helps to reduce your speed or stop. The main part of the modern automobile is a major brake master cylinder, which causes the pressure in the cylinder and the brake cylinders and expansion, the brake pad pressed against the brake disc.

Introduction

Brake system

Vehicles can be equipped with one or two types of brake systems:

a) Disc

b) Tumble

Disc brakes

They are usually mounted in the front and work together with brake pads, which are under pressure to stop the iron disc which rotates with the wheel. After the two brake pads per wheel is equipped with disc brake caliper (1), which are an integral part of the suspension.

Pressing the brake pedal with the brake hydraulic pressure system is created, which displaces the carriage of the cylinder, which pushes the brake pads to discs. If strong pressure to the brake pedal, the greater the pressure to force the brake pads to the discs before they enter the car starts rolling. Eventually the wear and tear on brake pads, but after a while, and brake discs. To be able to guarantee that the car is stopped will remain stable, it is necessary to change the brake pads to replace all four pads and / or two drives simultaneously. Disc brakes are usually installed in newer cars and the back.

disc brake caliper

Drum brakes

They have a drum shape (1) and installed only at the end. Disc brake pads (a) is a curved semicircle and has a friction lining and the brake is pressed to the inner surface of the drum.

After the two brake pads per wheel is fitted with drum brake system, which is an integral part of the suspension.

Pressing the brake pedal with the brake hydraulic pressure system is created, through which the wheel brake cylinder pressure on the inner drum pads on the surface before they enter the car starts rolling.

Drum brake shoe lining thickness should be checked regularly.

DRUM BRAKES

Other equally important components of the braking system:

Brake fluid Tire pressure

Important:

Disc brake pads replaced on average every 25.000 km.

Disc brakes should be replaced every third brake pad changes.

Drum brakes wear much slower than disk, but need to regularly inspect drum brake shoe lining thickness.

Do not forget to periodically check the brake fluid level and, if necessary, supplement.

Brake fluid change is recommended every two years.

The brake system is designed to:

reduce the speed of moving machinery, or full stop and keep standing.

Since the braking efficiency depends on the fundamental dynamic characteristics of the car.

The step to stop the car, the higher the safe speed, the car can run at speeds in excess.

Automobilio hidraulinė stabdžių sistema

Vehicle hydraulic brake system components

Brake master cylinder

This is the main hydraulic actuator unit, whose purpose - to brake fluid in the cylinder of the piston in the cylinder and a pressure that would force the cylinder to move the pistons arranged in slip, the brake pads are pressed to the rotating drum or disk.

Selection of the master cylinder

The main brake cylinder is selected based on the force needed to stop the car and according to what type and how many loops to the brake system. Hydraulic brake master cylinder braking force is transmitted depends on the volume, the volume is higher the greater the braking force, it can provide a cylinder.

The maximum braking force is when the brakes on all wheels, which when exploited all-wheel grip force. Front and rear wheel load and grip force varies depending on cargo weight and thrust. In addition, the rear suspension of the load decreases, while the front - is increasing. Therefore, the most effective braking. when the braking force varies depending on the adhesion force through change.

Main brake cylinder scheme

A number of specific brands of cars master cylinder

Renault Clio II 98m- ABS (BOSCH) 20,64mm. (2 pipe M10 M12)

Renault Espace -91m. 20,64mm. (4 pipe (crosswise 2xM12 2xM10))

Citroen Berlingo * Peugeot Partner/406 –ABS 23,81mm. (4 pipe 4xM10) BDX

Master cylinder operation scheme

While barkes are off or on

Thank you for your atention