Why are car brakes hydraulic?

Anybody know why car brakes use a hydraulic link rather than a pure mechanical link, like the throttles in the cars?

3 Answers

  • Anonymous
    2 months ago
    Favorite Answer

    The problem with mechanical brakes was getting them adjusted so the braking force was exactly the same at all 4 wheels - otherwise the car would pull to one side or buck, one brake would lock-up, etc. - dangerous and very hard to adjust rods or cables to be exactly in sync.

    Hydraulic systems - by their very nature - exert exactly the same pressure throughout the system  (yes, on most systems today there is a proportioning valve so the front brakes exert more pressure that the back - - - but 4 wheel hydraulic brakes introduced in the 1940s were a giant step forward in eliminating skids & erratic stops).

  • 2 months ago

    Hydraulics are much easier to install, just run a line to each. They are easier to maintain. Mechanical brakes require complex mechanisms over long distances subject to rust. Most were cables which can break.

    They can apply much higher pressures.

  • Barry
    Lv 6
    2 months ago

    Smoother action. More efficient. Safer due to diagonal systems. Many throttles use sensors to transmit movement.

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