Tire inflation system with discrete deflation circuit

摘要

A vehicle tire inflation system includes an air supply source in fluid communication with multiple tires of the vehicle. A pneumatic conduit extends between and is in fluid communication with the air supply source and the tires. Means are fluidly connected to the pneumatic conduit for enabling selective inflation and deflation of the tires. The means include a first pneumatic circuit for inflation of the tires, and a second pneumatic circuit for deflation of the tires. The second pneumatic circuit is discrete from the first pneumatic circuit and is common to more than one of the tires. The means provides controlled deflation of the tires in the second pneumatic circuit based upon a predetermined condition, preventing deflation of the tires until the vehicle is parked, or limiting the deflation of the tires, which in turn enables the tire inflation system to accommodate a desirable increased pressure in the tires.

主权项

1. A vehicle tire inflation system, comprising:
an air supply source in fluid communication with a plurality of tires of a vehicle; a pneumatic conduit extending between and being in fluid communication with said air supply source and said tires; and means fluidly connected to said pneumatic conduit for enabling selective inflation and deflation of said tires, said means including:
a first pneumatic circuit for inflation of said tires;a second pneumatic circuit for common control of deflation of said tires, said second pneumatic circuit being at least partially discrete from said first pneumatic circuit;a plurality of quick exhaust valves, each one of said quick exhaust valves being fluidly connected to a respective one of said tires and being responsive to said second pneumatic circuit to provide selective deflation of its respective tire; andsaid means providing controlled deflation of said tires based upon a predetermined condition, whereby said tire inflation system accommodates an increased pressure in said tires.