Patent ID: 6247762
Filing Date: 2001-06-19
Classification: B60T

Abstract:
A braking system for an automotive vehicle, comprising:pressure generating means for generating a first hydraulic braking pressure;a wheel brake cylinder adapted to be operatively mounted on a wheel of said vehicle for applying a braking force to said wheel with the first hydraulic braking pressure supplied by said pressure generating means;pressure control valve means disposed in a passage for communicating said pressure generating means with said wheel brake cylinder, said pressure control valve means controlling the first hydraulic braking pressure supplied to said wheel brake cylinder;electronic control means for controlling said pressure control valve means at least in response to an amount of operation of a brake pedal;a master cylinder for communicating with said wheel brake cylinder and supplying a second hydraulic braking pressure into said wheel brake cylinder in response to operation of said brake pedal, when at least one of said pressure generating means, said pressure control valve means and said electronic control means is abnormal;a stroke simulator connected to said master cylinder for allowing said brake pedal to advance in response to the amount of operation of said brake pedal; andboosting means for assisting said master cylinder to operate only when at least one of said pressure generating means, said pressure control valve means and said electronic control means is abnormal.