Air dryer system and method of controlling a pneumatic vehicle system
AssigneeZf Cv Systems Europe BV
InventorsMaciej SEMENIUK, Kevin PENDZICH
Life of this patent
Estimating the term…
Abstract
An air dryer system comprises a dryer inlet, a dryer outlet, a desiccant cartridge, and a dryer exhaust. The air dryer system comprises a purge valve including a first purge valve port connected to the dryer inlet and a second purge valve port connected to the dryer exhaust. The air dryer system comprises a switching valve including a first switching valve port connected to the dryer inlet, a second switching valve port connected to the desiccant cartridge, and a third switching valve port connected to the dryer exhaust. The air dryer system includes a solenoid valve assembly configured to provide pneumatic control signals.
Claims15
Air dryer system, comprising:
- a dryer inlet (configured to receive air from a compressor discharge line, a dryer outlet configured to supply dried air,
- a desiccant cartridge configured to receive the air from the dryer inlet (Hand to provide the dried air for outputting via the dryer outlet,
- a dryer exhaust,
- a pneumatically controlled valve assembly, comprising
- a purge valve comprising a first purge valve port connected to the dryer inlet (Hand a second purge valve port connected to the dryer exhaust, the purge valve being pneumatically controllable, and
- a switching valve comprising a first switching valve port connected to the dryer inlet, a second switching valve port connected to the desiccant cartridge, and a third switching valve port connected to the dryer exhaust, the switching valve being pneumatically controllable, and
- a solenoid valve assembly comprising
- a first solenoid valve configured to provide a first control pressure signal to control the purge valve, and
- a second solenoid valve configured to provide a second control pressure signal to control the compressor.
A method of controlling a pneumatic vehicle system,
- the pneumatic vehicle system comprising a compressor and an air dryer, the compressor comprising a compressor discharge port, the air dryer being connected to the compressor discharge port by a compressor discharge line,
- wherein the air dryer comprises a dryer inlet (configured to receive air from the compressor discharge line, a dryer outlet configured to supply dried air, a desiccant cartridge configured to receive the air from the dryer inlet (Hand to provide the dried air for outputting via the dryer outlet, and a dryer exhaust,
- wherein the air dryer comprises a pneumatically controlled valve assembly, the pneumatically controlled valve assembly comprising
- a purge valve comprising a first purge valve port connected to the dryer inlet (Hand a second purge valve port connected to the dryer exhaust, the purge valve being pneumatically controllable, and
- a switching valve comprising a first switching valve port connected to the dryer inlet, a second switching valve port connected to the desiccant cartridge, and a third switching valve port connected to the dryer exhaust, the switching valve being pneumatically controllable,
- wherein the method comprises:
- providing, by a first solenoid valve, a first control pressure signal to control the purge valve, and
- providing, by a second solenoid valve, a second control pressure signal to control the compressor.
Dependencies are inferred from the claim text.