Vehicle braking system and method

Abstract

As system for vehicle braking includes: a pedal actuated valve, including a first vent outlet in fluid communication with a fluid sink, a first supply inlet in fluid communication with a fluid source, and a first delivery outlet in fluid communication with a load; an electronically controlled valve in parallel with the pedal actuated valve, including a second vent outlet connected to the fluid sink via the first vent outlet, a second supply inlet in fluid communication with the fluid source, and a second delivery outlet in fluid communication with the load; and, a check valve connected between the load and the first delivery outlet downstream of the second vent outlet. A method for vehicle braking includes: operating at least one of the pedal actuated valve and the electronically controlled valve.

What is claimed is: 
     
         1 . A system for redundant braking in a truck, the system comprising:
 a first valve, wherein the first valve is selectively operable by a pedal of the truck, wherein the first valve comprises:
 a first inlet in fluid communication with a fluid source; 
 a first vent outlet in fluid communication with a fluid sink; and 
 a first delivery outlet in fluid communication with a load; 
   a pedal actuation subsystem, wherein the pedal actuation subsystem applies a force to the pedal based on a control signal received from a remote operator;   a second valve arranged in parallel with the first valve, wherein the second valve is electronically controllable and selectively operable by a control subsystem of the truck, wherein the second valve comprises:
 a second inlet in fluid communication with the fluid source; 
 a second vent outlet in fluid communication with the first vent outlet; and 
 a second delivery outlet in fluid communication with the load; 
   a check valve arranged between the first delivery outlet and the load, wherein the check valve is arranged downstream of the second vent outlet and configured to prevent fluid flow in a direction from the second delivery outlet to the first delivery outlet; and   the control subsystem, wherein the control subsystem comprises a communication module configured to receive the control signal from the remote operator.