The present invention relates to an adjustable braking system. According to the present invention, in order to be able to exert a braking force in consideration of the princess distance on the basis of the conditions given to the accelerator pedal, a load for outputting the displacement amount as an electrical signal in conjunction with the injection pump lever of the acceleration system, An electronic control unit that calculates and outputs a braking ratio by calculating the displacement amount and the displacement occurrence time, and is operated according to the output of this electronic control unit, and interlocks the piston in the brake valve of the braking system by converting rotational movement into linear movement. It is composed of an electric motor.;(Selectivity: FIG. 3)
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