What are the advantages and disadvantages of automobile braking system types?

Types of automobile braking system: drum brake and disc brake.

Advantages:

1, drum brake

(1) has automatic braking function, which enables the braking system to use lower oil pressure or a brake drum with a much smaller diameter than the brake disc.

(2) The hand brake mechanism is easy to install. Some models with disc brakes on the rear wheels will install a hand brake mechanism with drum brakes in the center of the brake disc.

(3) The processing and composition of parts are relatively simple, and the manufacturing cost is relatively low.

2. Disc brake

(1) Disc brake has better heat dissipation than drum brake, and continuous braking will not cause brake retrogression and brake failure.

(2) The change of brake disc size after heating does not increase the stroke of stepping on the brake pedal.

(3) The disc brake system responds quickly and can perform high-frequency braking action, which meets the requirements of ABS system.

(4) The disc brake has no automatic braking function of the drum brake, so the braking force of the left and right wheels is relatively uniform.

(5) Because the brake disc is well drained, the situation of poor braking caused by water or sediment can be reduced.

(6) Compared with the drum brake, the disc brake is simple in structure and easy to maintain.

Disadvantages:

1, drum brake

(1) The diameter of the drum brake will increase after heating, which will lead to the increase of the stroke of stepping on the brake pedal, and it is easy to cause the braking response to be less than expected. Therefore, when driving a vehicle with drum brakes, we should try our best to avoid the brake pad thermal retreat caused by the high temperature generated by continuous braking.

(2) The braking system reacts slowly, and the braking force is difficult to control, which is not conducive to high-frequency braking action.

(3) There are many complicated parts, and the brake clearance needs to be adjusted, which makes maintenance difficult.

2. Disc brake

(1) Because there is no automatic braking function of the drum brake, the braking force of the disc brake is lower than that of the drum brake.

(2) The friction area between the disc brake pad and the brake disc is smaller than that of the drum brake, which makes the braking force smaller.

(3) In order to improve the shortcomings of disc brakes, a large pedaling force or oil pressure is needed. Therefore, it is necessary to use a larger diameter brake disc or increase the oil pressure of the brake system to improve the braking force.

(4) The hand brake device is not easy to install. Some models with rear wheel disc brakes have added a hand brake mechanism with drum brakes.

(5) The brake pads wear heavily, and the replacement frequency may be high.