When it comes to vehicle braking systems, one of its key components is the brake disc, we now more common brake devices are the “drum brake” and “brake disc” two types, wherein the disc brake may also known as disc brakes, it is sub-normal disc brake ventilated disc brakes and two kinds. In addition, like some of the luxury sports car brand or optional equipment will be more advanced “ceramic brakes”, of course, also belong to the category “disc brake”. For link
1. The brake drum brakes principle
by a drum brake plate brakes, brake wheel cylinder, brake shoes, etc., a spring, nail tip, brake drum formed. It is the use of the hydraulic device to push it inside the brake pad brake drum, brake pad and the inner surface of the wheel with the rotational friction of the brake drum, the brake effect generated. Drum brake application has been nearly a century of history in the car above, but because of its reliability, and a powerful braking force, so that today still configured drum brakes (rear-wheel multi-use) on many models.
Drum brake member has a shape similar tambourine iron, known brake drum, which is fixed and the tire is rotated at the same speed. Brake drum brake drum insideMeans for generating a position that faces the brake braking torque. In the case of obtaining the same braking torque, the brake drum diameter drum brake device may be a brake disc brakes smaller than many. So large vehicle truck used to obtain a powerful braking force, the device can only drum brakes in the limited space of the rim.
Briefly, the brake pad drum brake is the use of the stationary drum brakes, friction brake drum to rotate with the wheel, a frictional force to brake the wheel rotational speed reduction.
When the brake pedal, the piston forward to push the brake oil in the brake master cylinder will force the foot and to generate a pressure in the oil passage. Pressure is transmitted via the brake fluid to the wheel brake cylinder of each piston, the piston brake wheel cylinder brake pad and then push outwards, the inner surface of the brake pads and the brake drum friction and generate sufficient friction to reduce the rotational speed of the wheel, in order to achieve the purpose of the brakes.
2. The disc brake brakes principle
disc brake is a disc brake disc and brake caliper is connected to the edge by a composition of the wheel. When braking, the high pressure brake fluid to promote the clamping brake disc brake pad so as to produce a braking effect. Works disc brakes can be used to describe a dish, you pinch a rotating plate with thumb and forefinger, dishes will stop rotating. Disc brakes are also sometimes called disc brakes, it is sub-normal disc brake ventilated disc brakes and two kinds.
ventilated disc brake is a plurality of circular vent holes are drilled in the disk, or the end surface of the disc or pre-cut out of the ventilation slots rectangular vents.
using a ventilated disc brake airflow effect, cooling effect than PThrough disc brake better.
Porsche disc brakes (ventilated disc) cold air cooling mode of action disc brake (disk brake) to the wheel brakes by: As the name suggests, a stationary disc brake brake disc sandwiching with the rotation of the tire of the brake disc to generate a frictional force, the wheel rotational speed reduction brake device.
Disc brakes when the brake pedal, the piston is pushed in the brake master cylinder, the brake pressure is established in the oil passage.
via the brake fluid pressure transmitted to the brake wheel cylinder of the brake caliper pistons, brake wheel cylinder after the piston under pressure moves outward and pushes the brake pads to clamp the brake disc, brake pads and so friction brakes to reduce wheel speed, so that vehicle deceleration or stop.
Disc brake pads against the brake discs and friction brakes due to the braking performance of the vehicle traveling in the fast rising, to increase the stability of the vehicle at high speed brakes, disc brakes have become the current mainstream brake system.
Since the disc brake brake disc exposed to air, so that the disc brake has excellent heat dissipation properties, made when the vehicle brakes or multiple brakes at high speed in a short time, braking performance is less likely recession, enabling the car to get a better braking effect, to enhance the safety of the vehicle.
Many vehicles use disc brake system with the ABS and VSC, TCS systems with disc brake and because of the rapid response, the ability to do high frequency of braking action, many cars use disc brake with ABS system and VSC, TCS with other systems, such systems need to meet the demand for rapid action to do.