Abstract: A vehicular air dryer includes a dryer inlet configured to receive air from a compressor discharge line, a dryer outlet configured to supply dried air, a dryer exhaust, a desiccant cartridge connected or connectable to the dryer inlet via an inlet line and to the dryer outlet via an outlet line, the desiccant cartridge being configured to be selectively operated in a drying mode and in a regeneration mode, wherein in the drying mode, the desiccant cartridge is configured to receive and dry the air from the dryer inlet and to provide the dried air for outputting via the dryer outlet, and in the regeneration mode, the desiccant cartridge is configured to receive and humidify regeneration air from the outlet line and/or from a regeneration port via a regeneration line and to vent humidified regeneration air via the dryer exhaust, wherein the vehicular air dryer includes at least two regeneration lines and wherein the vehicular air dryer is configured to provide a variable amount of regeneration air to the desicc

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.

Abstract: A method for controlling a compressed air supply device of a compressed air system of a utility vehicle. The compressed air supply device has a compressor, an air dryer unit and a regeneration valve device and being operated in an operating mode with delivery phases and regeneration phases. In the method, a current humidity, e.g. a relative or absolute humidity, is ascertained in the compressed air system, a current dew point depression (c-DPD) is ascertained from the ascertained humidity, a target dew point depression (t-DPD) is ascertained from current and/or projected ambient temperature data (T0, T(t)) and/or from current and/or projected vehicle operating data, and a target dew point depression (t-DPD) is subsequently ascertained from current and/or projected ambient temperature data (T0, T(t)) and compared with the current dew point depression (c-DPD). The operating mode and/or the regeneration phases are subsequently set and/or changed.

Abstract: Disclosed is a desiccant cartridge (10) for drying and de-oiling a gaseous fluid, and a method for flow guidance within the desiccant cartridge. The desiccant cartridge and a housing (12) having positioned therein an inner pot (28) in which an oil separating medium (50) for oil particles contained in the fluid and a desiccant (52) for drying the gaseous fluid are arranged one after the other in the direction of the housing longitudinal axis (14). The housing (12) has a housing base (18) having a centrally arranged inlet (20) for the fluid to be dried and de-oiled and having eccentrically arranged outlet openings (24) for the dried and de-oiled fluid. During normal operation of the desiccant cartridge (10), the gaseous fluid guided into the desiccant cartridge (10) via the central inlet (20) is first guided in a flow through the oil separating medium (50) and then through the desiccant (52).

Abstract: Disclosed is a desiccant cartridge (10) for drying and de-oiling a gaseous fluid, and a method for flow guidance within the desiccant cartridge. The desiccant cartridge and a housing (12) having positioned therein an inner pot (28) in which an oil separating medium (50) for oil particles contained in the fluid and a desiccant (52) for drying the gaseous fluid are arranged one after the other in the direction of the housing longitudinal axis (14). The housing (12) has a housing base (18) having a centrally arranged inlet (20) for the fluid to be dried and de-oiled and having eccentrically arranged outlet openings (24) for the dried and de-oiled fluid. During normal operation of the desiccant cartridge (10), the gaseous fluid guided into the desiccant cartridge (10) via the central inlet (20) is first guided in a flow through the oil separating medium (50) and then through the desiccant (52).

Abstract: In a compressed air processing method and device for motor vehicles, compressed air at static pressure in a pressure line is purified of contaminants, such as hydrocarbon compounds and oil products, and subsequently dried. To ensure that the compressed air is effectively purified of contaminants and water vapor before purification, the compressed air is brought to a temperature at which the contaminants present in gaseous form condense and the water mass contained in the compressed air is dissolved as steam.

Abstract: A control device for a compressed air preparation device of a vehicle outputs output signals for adjusting feed phases and regeneration phases of the compressed air preparation device. A compressor feeds compressed air via an air dryer having a desiccant into a compressed air reservoir in a feed phase, and compressed air is passed out of the compressed air reservoir through the air dryer for drying the desiccant in a regeneration phase. The control device adjusts the regeneration phases depending on a current or future engine load and/or a current or future consumption of compressed air by the vehicle. In overrun phases, the desiccant can be excessively dried to a low moisture level in order to save fuel in later travel segments. Route-optimized regeneration of the desiccant as a function of engine load and/or utilization phases can also be effected.

Abstract: In a compressed air purification apparatus for motor vehicles, compressed air under static pressure in a pressure conduit (3) is firstly freed of impurities such as hydrocarbon compounds and oil products and subsequently dried. To ensure effective freeing of the compressed air of impurities and water vapour and provide a compressed air purification apparatus which can be used with simple means in motor vehicles, the invention provides for the compressed air being brought, before purification, to such a temperature that the gaseous impurities in the compressed air are condensed and the water present in the compressed air is dissolved as vapour.

Abstract: The invention relates to a control device (3) for a compressed air preparation device (1) of a vehicle (2), wherein the control device (3) outputs output signals for adjusting feed phases and regeneration phases of the compressed air preparation device (1), wherein a compressor (4) feeds compressed air via an air dryer having a desiccant (6a) into a compressed air reservoir (8) in a feed phase, and compressed air is fed out of the compressed air reservoir (8) through the air dryer (6) for drying the desicant (6a) in a regeneration phase. According to the invention, the control device (3) adjusts the regeneration phases depending on a current or future engine load and/or a current or future consumption of compressed air by the vehicle (2). Particularly in coasting phases, excessive drying of the desiccant to a low moisture can occur, in order to save fuel in later travel segments. Route-optimized regeneration of the desiccant as a function of engine load and/or utilization phases is also possible.