Twin chamber air dryer for a pneumatic system of a commercial vehicle

Abstract

A twin chamber air dryer for a pneumatic system of a commercial vehicle includes a casing, a supply inlet to be connected to a compressor, a spool valve including a first spool valve outlet to be connected to a first cartridge inlet of a first cartridge and a second spool valve outlet to be connected to a second cartridge inlet of a second cartridge, wherein a first air passage is connecting the supply inlet to the first spool valve outlet, and a second air passage is connecting the supply inlet to the second spool valve outlet, wherein in a basic condition, the first air passage is open and the second air passage is closed, to form a first supply mode through the first cartridge, and wherein in an actuated condition the second air passage is open and the first air passage is closed, to form a second supply mode through the second cartridge, wherein in a high inlet pressure situation with an inlet pressure at the supply inlet above a pressure threshold, the supply inlet is connected to the first spool valve outlet and to the second spool valve outlet.

Dependencies are inferred from the claim text.