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AssigneeAllied Corporation
InventorsJames P. Koening, David J. Knight, James E. Szudy, Roy E. Bartholomew, William R. Wurst
Estimating the term…
A compressed air system includes an air compressor the inlet of which is communicated to the vehicle engine turbocharger. The outlet of the air compressor is communicated through an air dryer to a storage reservoir. A governor is responsive to the pressure level in the reservoir to generate an unloading signal unloading the air compressor when the pressure in the reservoir attains a predetermined value. The unloading signal is also communicated through a control valve to purge the air dryer during compressor unloading. The control valve closes communication between the governor and the air dryer to trap a predetermined pressure level in the purge volume of the air dryer to prevent the air dryer from purging to atmospheric pressure. Accordingly, a predetermined air pressure level is maintained in the purge volume, so that the outlet of the turbocharger can never be communicated to atmospheric pressure.
Compressed air system comprising a reservior, an air compressor having a discharge line communicated to the reservoir for charging the latter to a predetermined pressure level, an air dryer in said discharge line for drying compressed air communicated to the reservoir, means for segregating from said reservoir a segregated air volume, said air dryer including a purgable desiccant and being responsive to a pressure signal to regenerate said desiccant by communicating said segregated air volume through the desiccant in a direction opposite to the direction air is communicated through the desiccant when the reservoir is charged, a governor responsive to the pressure level in the reservoir to unload the air compressor and generate said pressure signal when the pressure level in the reservoir attains said predetermined level, and valve means between said governor and said air dryer and responsive to the pressure level in said segregated air volume and to said pressure signal to control communication of the pressure signal to the air dryer whereby said pressure signal is terminated when the pressure level of said segregated air volume drops below a predetermined level.
Compressed air system comprising a reservoir, an air compressor communicated to said reservoir for charging the latter to a predetermined pressure level and an air dryer connected between the air compressor and the reservoir for drying compressed air communicated to the reservoir, said air dryer including means for segregating a segregated air volume separate from said reservoir for purging the air dryer when the compressor is unloaded, a governor responsive to said predetermined pressure level for unloading said air compressor and for generating a pressure signal causing said segregated air volume to purge said air compressor, and valve means responsive to the pressure level of said segregated air volume for terminating purging of the air dryer when the pressure level in said segregated air volume drops below a predecided pressure level.
Dependencies are inferred from the claim text.