Variable linked braking system controlled by motorcycle lean angle

A variable linked braking system controlled by motorcycle lean angle, comprising:

• a brake master cylinder;
• a hydraulic pressure proportion variable valve connected to the brake master cylinder by an oil path;
• a front brake unit connected to the hydraulic pressure proportion variable valve by a first oil path;
• a rear brake unit connected to the hydraulic pressure proportion variable valve by a second oil path;
• a hydraulic pressure proportion controller for controlling a hydraulic pressure distribution proportion of the hydraulic pressure proportion variable valve;
• a motorcycle lean angle sensor for sensing a motorcycle lean angle, converting the sensed motorcycle lean angle into a lean angle signal, and sending the lean angle signal to the hydraulic pressure proportion controller;
• and
• a brake switch for starting the brake master cylinder and sending a brake signal to the hydraulic pressure proportion controller, the hydraulic pressure proportion controller controlling the hydraulic pressure distribution proportion of the hydraulic pressure proportion variable valve so that, given a motorcycle speed larger than 0, a ratio of a braking force of the front brake unit to a braking force of the rear brake unit decreases as the motorcycle lean angle increases.