What is Brake Fluid?
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Brake fluid is a liquid medium used in hydraulic braking systems to transmit braking pressure, employed in vehicles equipped with hydraulic braking systems. As an indispensable component of the braking system, brake fluid serves as a force-transmitting medium. Since liquids are incompressible, the pressure output from the master cylinder is directly transmitted to the wheel cylinders through the brake fluid. The working pressure of brake fluid in the braking system is typically 2MPa, and can reach as high as 4 to 5MPa. All liquids share the characteristic of being incompressible; in a sealed container or a pipeline filled with liquid, when pressure is applied to the liquid, it is quickly and evenly transmitted to all parts of the liquid. Hydraulic braking systems operate based on this principle.