Air preparation device of a vehicle
A technology for preparing devices and air, which is applied in the field of commercial vehicles to achieve the effect of avoiding switching conflicts
Inactive Publication Date: 2021-01-08
KNORR-BREMSE SYST FUER NUTZFAHRZEUGE GMBH
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
However, this will not work in the case of not shutting down the electronic control due to erroneous sensor values within the valid range (i.e. going into standby mode)
Method used
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[0020] according to figure 1 , the electronic air preparation device comprises an air dryer unit 1 for drying the compressed air produced by a pneumatically switchable compressor 2 . The compressed air produced by the compressor 2 is fed on the input side to the electronic air preparation device via a compressor connection 3 . Next to it there is a parallel external charging port 4 which can be charged with statically generated compressed air in the case of maintenance, so that the compressor 2 does not have to be operated in this case.
[0021] The compressed air dried by the air dryer unit 1 is fed to a plurality of consumer circuits as system pressure via a non-return valve 5 . In this exemplary embodiment, the service brake for the front axle of a commercial vehicle, which can be connected via the interface 6 of the consumer circuit, is suitable as a consumer circuit; the service brake for the rear axle of a commercial vehicle, which can be connected Connection via consu...
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The invention relates to an air preparation device having an electronic control unit (17) for supplying at least one load circuit (6-12) of a vehicle with dried system air, comprising an air dryer unit (1) for drying compressed air produced produced by an pneumatically switchable compressor (2), which air dryer unit supplies the at least one load circuit (6-12) with dried compressed air via at least one overflow valve (13a-13f), wherein an electromagnetic regeneration valve (18) is provided which is connected to the control unit (17) and returns dried compressed air along a regeneration path through the air dryer unit (1) in order to regenerate the air dryer unit (1), and an electromagnetic compressor control valve (16) is provided which is likewise connected to the control unit (17), forswitching the pneumatically switchable compressor (2) on and off via a pneumatic switching port (14), on the basis of a system pressure measurement value determined by at least one pressure sensor (22a-22c) and supplied to the electronic control unit (17) as an input signal. For redundant pneumatic compressor activation, a pneumatically pilot-controlled further compressor control valve (23) is provided, to which the system pressure or a pressure proportional thereto is applied at a control inlet (24) in order to switch on the compressor (2) by activation of the pneumatic switching port (14) after the system pressure has dropped below a lower limit value.
Description
technical field [0001] The invention relates to an air preparation device with an electronic control unit for supplying dried system air to at least one consumer circuit of a vehicle, preferably a commercial vehicle, the air preparation device comprising an air dryer unit for drying Compressed air from a pneumatically switchable compressor, which air dryer unit supplies at least one consumer circuit with dried compressed air via at least one overflow valve; an electromagnetic regeneration valve connected to the control unit, which will Dried compressed air is led back through the air dryer unit along the regeneration path for regenerating the air dryer unit; and a solenoid compressor control valve, also connected to the control unit, for switching based on the system pressure via the pneumatic interface The measured value switches the pneumatically switchable compressor on and off, the measured value of the system pressure being determined by at least one pressure sensor and s...
Claims
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IPC IPC(8): B60T17/00B60T17/02B60T17/22
CPCB60T17/002B60T17/02B60T17/221B01D53/0446B01D53/0454B01D53/261B01D2257/80B01D2259/40086B01D2259/4566B60G2600/66B60T17/004F04D27/009F15B21/048
Inventor M·米卡斯基K·施尼特格
Owner KNORR-BREMSE SYST FUER NUTZFAHRZEUGE GMBH