Compressed air treatment device that is designed to be installed in an industrial vehicle

A unitary device for treating compressed air, to be installed in an industrial vehicle comprising a motor vehicle able to haul a trailer, including:

• an air inlet for air coming from a compressed-air source;
• at least one air outlet connected to a reservoir or reservoirs intended to supply a service brake system;
• a set of electropneumatic components distributing compressed air from the compressed-air source bound for the reservoir or reservoirs;
• an electronic command and control unit, to operate said set of electropneumatic components, the command and control unit being connected to a computer communication bus and to various electrical components;
• a supplementary air outlet for directly providing compressed air at a variable control pressure to an actuator or actuators of a parking brake system of the motor vehicle;
• a supplementary set of electropneumatic components associated with and upstream of the supplementary air outlet which set receives compressed air at a supply pressure and applies the variable control pressure to the compressed air to selectively fully operate the actuator or actuators;
• operating means incorporated into the electronic command and control unit, to operate the supplementary set of electropneumatic components on the basis of information originating from the computer communication bus and/or from various electrical components, whereby full operation of the actuator or actuators of the parking brake system is directly controlled by the device rather than by a dispersed pressure control component;
• and
• wherein one of said supplementary set of electropneumatic components comprises an electropneumatic component for exhausting the compressed air to activate the parking brake system.

A system for controlling a service brake system and a parking brake system comprising:

• a unitary device for treating compressed air, to be installed in an industrial vehicle comprising a motor vehicle able to haul a trailer, said unitary device comprising:
• an air inlet for air coming from a compressed-air source;
• at least one air outlet connected to a reservoir or reservoirs intended to supply a service brake system;
• a set of electropneumatic components distributing compressed air from the compressed-air source bound for the reservoir or reservoirs;
• an electronic command and control unit, to operate said set of electropneumatic components, the command and control unit being connected to a computer communication bus and to various electrical components;
• a supplementary air outlet for directly providing compressed air at a variable control pressure to an actuator or actuators of a parking brake system of the motor vehicle;
• a supplementary set of electropneumatic components associated with and upstream of the supplementary air outlet which set receives compressed air at a supply pressure and applies the variable control pressure to the compressed air to selectively fully operate the actuator or actuators;
• operating means incorporated into the electronic command and control unit, to operate the supplementary set of electropneumatic components on the basis of information originating from the computer communication bus and/or from various electrical components, whereby full operation of the actuator or actuators of the parking brake system is directly controlled by the device rather than by a dispersed pressure control component;
• and
• said actuator or actuators being located downstream of said supplementary air outlet, being configured to activate said parking brake system, and being separate from said unitary device.