| 摘要 |
The invention relates to a compressed air supply device (10) for commercial vehicles, wherein the compressed air supply device (10) is or can be electrically connected to an electronic control device (12), and wherein the compressed air supply device (10) comprises at least one control valve (16, 18) which can be actuated via the electronic control device (12). The control valve (16, 18) comprises at least one inlet connection, a venting connection and an outlet connection. Also provided are a control line (52), which is connected to the outlet connection of the control valve (16), wherein the control line (52) is or can be connected to a control inlet of a compressor and/or, for regeneration, to an air filter (26), as well as a supply line (30), via which compressed air is or can be conducted to the inlet connection of the control valve (16, 18), and a venting line (46), which is connected to the venting connection of the control valve (16). A backup valve (68, 80) is provided, wherein an inlet of the backup valve (68, 80) is connected to the supply line (30) and an outlet of the backup valve (68, 80) is or can be connected to the venting line (46). The backup valve (68, 80) is designed such that it opens pneumatically when a pressure which corresponds to or exceeds a predetermined opening pressure is present in the supply line (30). |
