Electro-hydraulic brake system

An electro-hydraulic brake system for a vehicle, comprising:

• a master cylinder block disposed in fluid communication with a reservoir tank containing a brake fluid;
• a manifold block disposed in fluid communication with said master cylinder block for supplying the brake fluid from said master cylinder block to wheel brakes of the vehicle;
• a protrusion extending outwardly from a rear surface of said master cylinder block to a terminal end;
• said master cylinder block defining a channel extending along a center axis into said protrusion and spaced from said terminal end;
• a pressure supply unit coupled to said master cylinder block and in fluid communication with said reservoir tank for supplying the brake fluid from said reservoir tank;
• said pressure supply unit including a housing defining a chamber;
• a displacement piston slidably disposed in said channel and extending along said center axis between a primary end and a secondary end with said primary end being disposed in said chamber and said secondary end being disposed in said channel;
• an actuator disposed in said chamber and rotatably coupled to said displacement piston for moving said displacement piston along said center axis;
• and
• a first anti-rotational member disposed in said channel and coupled to said terminal end for engaging said secondary end of said displacement piston to prevent rotation of said displacement piston and translate rotational movement of said actuator into an axial movement.