From one hundred to zero: quickly understand the brake system

In this article, let's talk about the brake system, what are the components of the brakes, and what are their functions? For the exquisite products on the market, do you know what the functions of your modified parts are? How can I change the sense of change and change it? I hope that after reading this article, you can get a better understanding of the brake system.

The modern brake system is roughly divided into two types, the valley brake system and the disc brake system. Here we discuss the theme of the disc brake system. The operation of the disc is when we buckle the brake rod to squeeze the main pump piston. Then, the generated hydraulic pressure channel is transmitted to the caliper, and the caliper piston is pushed to generate friction between the sheet and the disc to achieve a deceleration effect, and the disc raking system is divided into five parts:

Master pump

Simply put, the function of the master cylinder is to conduct hydraulic pressure to the caliper. In terms of form, it can be divided into two types: side push and straight push. The direction of the thrust pump rod movement and the direction of the master cylinder piston are vertical, so the front end of the rod uses a cam-like design, so that the side push master cylinder is not linear in use, and the direct thrust cylinder rod and piston are parallel. The relationship, the pull-down lever can simultaneously squeeze the piston through the ejector pin, so the direct push pump can provide more linear and direct hydraulic transmission when the master pump is actuated.

The thrust pump is designed so that the direction of the rod movement is perpendicular to the direction in which the piston is pushed, and the thrust pump rod and the piston are parallel.

Direct push/side push master cylinder difference in actuation

(According to the design of each label, the actual work performance will be different, this chart is for simple indication)

Caliper

The principle of the caliper is to use hydraulic pressure to push the internal piston, and the piston applies force to make the sheet rub against the disc to achieve the braking effect. The caliper process is divided into casting and forging, and the caliper main body design is divided into multiple pieces and One-piece, the type varies from single-piston to multi-piston, one-way and two-way. Today's mainstream matching is based on the opposite four-piston.

The integrated caliper has a high rigidity and is resistant to many shearing forces and self-twisting conditions. The current mainstream calipers are mainly four-pistons.

Tubing

Most of the domestic automakers are mainly rubber-based, which can reduce the price and maintain a lot of flexibility in use. However, the rubber tubing operation will expand due to the pressure of the liquid, and the loss should be transmitted from the main pump to the caliper. Liquid pressure, during repeated use of the vehicle, long-term solar exposure will also cause the rubber tubing to deteriorate, causing cracks and breakage.

Therefore, the replacement of the tubing material (such as metal or Teflon material) which is more resistant to high pressure and high temperature and which is not easy to change can make the hydraulic transmission effect more stable, direct and efficient, and can effectively prevent the accident caused by the damage of the tubing. .

Rubber hoses will cause rubber deterioration and cracking due to long-term use and sun exposure. Replacing metal tubing can make liquid pressure transmission better, but the feel will become harder.

Order film

The main function of the film is to rub with the disk, using friction to transform the kinetic energy into the original heat. The braking performance varies according to the formula of different brands. It can be divided into asbestos, non-asbestos (NAO) and semi-metal sintering. (SEMI-me taLLIC), metal sintered (MMC), composite material (CONSTITUENT).

Since the film will provide a lot of heat when it provides the braking effect, and the faster and heavier the car will add more kinetic energy, the burden of the braking system will become larger, so the brakes will be modified. In addition to paying attention to the level of friction coefficient, the ability to withstand high temperatures is also the focus of choice.

To make the film different, the improvement of the force is not the same, and the working temperature is relatively improved.

Disc

The last important role in the brake system is the disc. Generally, the choice of the disc is usually to increase the diameter to obtain better braking force. In addition, the material of the disc itself is also a factor affecting the braking performance. A large factor, depending on the environment used, the disc is made of iron, steel, ceramic or even carbon fiber.

The function of scribing and punching the disc is to eliminate the dust generated after the brakes are rubbed against the disc. It also helps the heat dissipation, but it is not as porous as possible. Consider the rigidity and friction area. You should also pay attention to the disk.

The disc can also be divided into two types, the fixed disc and the floating disc. The biggest difference between the discs is that the fixed disc is a one-piece structure, while the floating disc is divided into inner and outer layers, which are floating. The combination of buckles and a certain amount of activity has the advantage of being able to maintain the joint area and maintain the space after thermal expansion through the aforementioned amount of activity.

Crossed with a number of perforated discs, the braking performance and the heat dissipation chip will vary, with a fixed original disk, with both style and practicality, the floating inner disk and outer disk are connected by a floating buckles, appearance The top is quite different from the fixed disc.

The above is the basic introduction of the disc brake system. I believe that after reading, everyone has a basic concept for the various parts of the brake system. Next, the small series specifically summarizes the four major brake system modification methods, from basic entry to high-end modification. The lost riders in the car.

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