Tractor CTIS - Central Tire Inflation System

Tractor CTIS - Central Tire Inflation System

In principle, the CTIS works by transferring air from a stationary component - stator to a rotating component - rotor. For this process to work, pressure-resilient gasket seals are installed in the stator that, by interacting with the rotor, cause annular channels through which the air pressure flows, of course, also while the vehicle is moving.
The so-called rotary union, which is available in different configurations for the different axle types of the machines, is mounted on each wheel that is regulated by our system. A large working line and a small control line from the rotor lead to the tire valve and rotates synchronously.
The air supply comes from the vehicle’s own compressor and air reservoir of the air brake system, where this is available. A safety valve, the so-called overflow valve, ensures that the pressure in the air brake reservoir cannot fall below 94 Psi (6.5 bar) so that the brakes have priority over the tire inflation system. Where no air brake system is available, PTG can offer hydraulic-driven air supply systems to power the CTIS.
The patented dual-line principle of the PTG CTIS ensures that after every pressure change the tires are closed off and the rotary unions (including seals) are depressurized and are thereby optimally protected. This technology also ensures that the tire loses no air in the event of a leak in the system or a break in the line, thereby guaranteeing increased safety.

For more information visit: https://www.ptg.info/ptg-tyre-inflation-systems.html
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