Now that you know what the brake master cylinder is, we’ll jump into how it works in action. All that most people think of is they press the brake pedal and the car slows down or comes to a complete stop. However, by pressing the brake pedal you are pushing on the primary pistol through a linkage. Pressure then builds in the cylinder and lines as the pedal is depressed further.
From here, the pressure that builds up between the primary and secondary piston forces the secondary piston to pack together the fluid into its circuit. If one of the pistons causes a circuit to have a leak, the pressure between the primary and secondary cylinder will be lost. The result of this is the primary cylinder contacting the secondary cylinder.
Once the two cylinders come in contact with each other, the brake master cylinder will act as if it has only one piston. The second cylinder will remain in tact, but the driver will have to press harder in order to come to a stop. The reason for this is that only two wheels have pressure, which reduces the braking power greatly.
Certainly it is vital that you pay close attention to the electrical sensor that warns you of low brake fluid, because this can prevent you of driving on low braking power. The longer you drive without getting your car checked on, the greater your chance is of having an accident. Luckily, the master cylinder has provided drivers with more of a warning and increased the time you have to get your brakes checked on.
As time goes on, there will probably be another invention that increases the safety of drivers. But for now, the brake master cylinder has given drivers that added security needed to prevent and decrease the amount of accidents that occur.