EPB low residual torque software function

A braking system, comprising:

• a hydraulic electronic control unit;
• a switch in electrical communication with the hydraulic electronic control unit, the switch operable for being placed in a first position or a second position;
• at least one brake unit operable for being controlled by the hydraulic electronic control unit, the at least one brake unit further comprising:
• at least one actuator in electrical communication with the electronic control unit;
• at least one disc, the actuator operable for selectively applying a force to the at least one disc;
• at least one caliper including a piston operable for selectively applying a force to the at least one disc;
• at least one brake pad connected to the at least one caliper, the least one brake pad selectively in contact with the at least one disc;
• at least one low-pressure accumulator in fluid communication with the at least one caliper;
• a pump in fluid communication with the piston of the at least one caliper and the at least one low-pressure accumulator;
• wherein the piston of the at least one brake unit is exposed to pressurized fluid after the switch is changed from the second position to the first position and the at least one actuator releases the at least one disc, creating a pressure differential between the at least one low-pressure accumulator and piston of the at least one caliper, and the pressure differential causes fluid in the at least one caliper to be transferred to the at least one low-pressure accumulator, and the hydraulic electronic control unit then activates the pump, causing fluid to transfer away from the at least one caliper and the at least one low-pressure accumulator to create a suction on the piston that moves the piston and, the at least one brake pad away from the at least one disc, creating a gap between the at least one brake pad and the at least one disc;
• a pump accumulator in fluid communication on an outlet side of the pump and a restriction point in fluid communication of an outlet side of the pump accumulator;
• and
• a primary feed conduit in fluid communication with a first accumulator, a first valve and a second valve in fluid communication with the primary feed conduit, the first valve in further fluid communication with a second conduit and a second accumulator, the second valve in further fluid communication with a third conduit and a fourth conduit, wherein the pump, pump accumulator and the restriction point are disposed in the third conduit and the third conduit is in further fluid communication with the second conduit.

A method for creating a desired air-gap in a braking system, comprising the steps of:

• providing a hydraulic electronic control unit;
• providing a switch in electrical communication with the hydraulic electronic control unit;
• providing at least one brake unit including a piston that is operable for being controlled by the hydraulic electronic control unit;
• providing at least one disc, the at least one brake unit operable for selectively applying a force to the at least one disc;
• providing at least one actuator in electrical communication with the electronic control unit and the switch, the switch is able to be placed in a first position, and the switch is able to be placed in a second position;
• providing at least one low-pressure accumulator in fluid communication with the at least one brake unit;
• and
• providing a pump in fluid communication with the at least one brake unit and the at least one low-pressure accumulator;
• providing a pump accumulator in fluid communication on an outlet side of the pump and a restriction point in fluid communication of an outlet side of the pump accumulator
• providing a primary feed conduit m fluid communication with a first accumulator, a first valve and a second valve in fluid communication with the primary feed conduit, the first valve in further fluid communication with a second conduit and a second accumulator, the second valve in further fluid communication with a third conduit and a fourth conduit, wherein the pump, pump accumulator and the restriction point are disposed in the third conduit and the third conduit is in further fluid communication with the second conduit;
• changing the switch from the second position to the first position such that the at least one brake unit is exposed to pressurized fluid, and a pressure differential is created between the at least one brake unit and the low-pressure accumulator, causing fluid to be transferred to the low-pressure accumulator;
• and
• activating the pump using the hydraulic electronic control unit, such that fluid is transferred away from the piston of the at least one brake unit and the at least one low-pressure accumulator to create a suction that moves the piston away at least one disk, creating a creating a gap adjacent the at least one disc.