US 2025/0146514 A1 · METHOD FOR CONTROLLING A COMPRESSED AIR SUPPLY DEVICE AND A COMPRESSED AIR SUPPLY DEVICE FOR A COMPRESSED AIR SYSTEM OF A UTILITY VEHICLE

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.

Claims19

Dependent claims

A method for controlling a compressed air supply device of a compressed air system of a utility vehicle, the compressed air supply device comprising:

a compressor, an air dryer unit and a regeneration valve device, the compressed air supply device being operated in an operating mode with delivery phases and regeneration phases, compressed air being delivered by the compressor, guided through the air dryer unit and dried thereby in the delivery phases, and dried compressed air being conducted through the regeneration valve device and the air dryer unit in the regeneration phases,
wherein
a current humidity is ascertained in the compressed air system,
a current dew point depression is ascertained from the ascertained humidity,
a target dew point depression is ascertained,
from current and/or projected ambient temperature data, and/or
from current and/or projected vehicle operating data, the target dew point depression is subsequently compared with the current dew point depression, and
the operating mode is set and/or changed subject to the comparison.

5 more elements

A compressed air supply device for a compressed air system of a utility vehicle, the compressed air supply device having:

a compressor for delivering compressed air,
an outlet region for connection to a consumer stage with consumer circuits,
an air dryer unit, which is provided between the compressor and the outlet region,
an electronic control unit, which is designed to set an operating mode with at least delivery phases and regeneration phases, and
a regeneration valve device, which is connected to the outlet region and can be activated by the electronic control unit to form the delivery phases for delivering compressed air through the air dryer unit to the outlet region and the regeneration phases, in which the delivered, dried compressed air is returned from the outlet region through the air dryer unit,
wherein
the electronic control unit is designed to read in a humidity measurement signal indicating a current humidity and to ascertain a current dew point depression from the humidity measurement signal,
to ascertain a target dew point depression from current and/or projected ambient temperature data,
to compare the target dew point depression with the current dew point depression and to set and/or change the operating mode and/or the regeneration phases subject to the comparison.

6 more elements

Dependencies are inferred from the claim text.

Method for controlling a compressed air supply device and a compressed air supply device for a compressed air system of a utility vehicle

Life of this patent

Method for controlling a compressed air supply device and a compressed air supply device for a compressed air system of a utility vehicle

Life of this patent

Abstract

Claims19