What is Brake fluid? How it Works?

The braking system incorporated into an automobile is one of the major parts of the automobile itself. While the engine, gear system, steering, wheels, etc. are important parts, the brake is comparatively more important part that offers a kind of protection to the driver, owner, or the travelers. This has been the same from the beginning. Over the past years, to be precise from the introduction of automobiles on the market, brakes have undergone several modifications and changes. Today, hydraulic brakes are one of the most efficient and advanced automobile braking systems in the world.

To know more about the hydraulic braking system, you should first know about brake fluids and how it works. Here is everything you need to know.

Brake fluid

What is brake fluid?

Brake fluid is simply a type of fluid that is designed in such a way that it could be used in the hydraulic brakes. When compared to other types of automobile fluids, the brake fluid is different, they are designed to be least compressible, which, in turn, increases the efficiency of braking.

Brake fluids commonly come with lubricant and anti-corrosion features which, no matter what, makes sure that the braking system remains intact. Today, there are different types of good brake fluids available based on their chemical composition and properties. A brake fluid could be glycol-based, silicone-based, or mineral based fluid, it depends on the type and compatibility.

How it works?

A braking system in your automobile is filled with brake fluid, when you step on the brake pedal, the force you exert on the pedal forces a small piston inside the brake caliper to compress, squeezing the brake rotors that slows down the automobile. This is the simplest way of explaining how brake fluid work.

A more detailed version of the explanation would include precise details on how brake fluid works. As mentioned, when the user steps on the brake pedal, the force is not transferred to the brake rotors magically, but through brake lines that diverts the forces to all brake rotors. This is where brake fluids come in, these brake lines are filled with brake fluid, and the brake fluid carries the force to the brake rotor. Without brake fluid inside the brake line, the force is not transferred, which means the brake does not work.

Brake fluids are always non-compressible and hygroscopic, which, in turn, allows all the energy or force exerted on the brake pedal to be converted into braking pressure that squeezes the brake rotors on the wheel and slows the automobile. Most people commonly overlook brake fluid, the brake fluid is not as simple as it seems, while braking there is a lot of friction that creates heat, which tends to boil the fluid. But, the braking fluid should be such a fluid that does not boil and lose its non-compressible feature or evaporate such temperatures.

If the braking fluid overheats or boils, it creates air bubbles in the braking system, this is not good. Air bubbles or air in the braking system reduces braking efficiency. As you know, air could be compressed and the presence of air or air bubble in the system consumes the braking pressure, therefore, preventing the brakes from functioning properly.

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