Pneumatic system for a vehicle, method for open-loop and / or closed-loop control, compressor system, and vehicle

Abstract

The present invention relates to a pneumatic system for a vehicle (1), in particular a commercial vehicle and / or a rail vehicle, having a compressor system, an air treatment unit (4) and at least one control unit (30; 40), wherein the compressor drive (3) of the compressor system remains in the switched-on state when an actual temperature that is lower than a predefinable target temperature is able to be determined by the at least one control unit (30; 40) by means of a temperature sensor (200), and / or wherein the compressor drive (3) is able to be switched off when an actual temperature that is higher than or equal to the predefinable target temperature or higher than a predefinable maximum temperature is able to be determined by the at least one control unit (30; 40) by means of the temperature sensor (200), wherein the target temperature is predefinable by the at least one control unit (30; 40) depending on an ambient temperature. The invention also relates to a method for open-loop and / or closed-loop control, to a compressor system, and to a vehicle.

Description

[0001] DESCRIPTION

[0002] Pneumatic system for a vehicle, method for controlling and / or regulating, compressor system and vehicle

[0003] The present invention relates to a pneumatic system for a vehicle, in particular a commercial vehicle and / or a rail vehicle, a method for controlling and / or regulating the same, a compressor system and a vehicle.

[0004] Various approaches to controlling compressors or compressor systems to prevent condensate formation are known from the state of the art. The compressor or compressor system is kept running in such a way that the air volume delivered and the increasing operating temperature during operation prevent condensate formation in the compressor or compressor system.

[0005] Condensation or condensate formation in a compressor (system) depends on several factors, including air pressure, humidity and air temperature.

[0006] In order to avoid condensate formation in the oil of an oil-injected compressor, the document EP 3 534 008 B1 proposes stopping the drive of the compressor element as a function of a minimum temperature according to a stop program when such a minimum temperature is present, or executing a circulation program for the continuous compression of gas and circulating this gas via a circulation pipe until the minimum temperature is reached, wherein the stop program is executed at the earliest after a set minimum period and at the latest after a set maximum period.

[0007] According to the document EP 0 078 149 A1, an oil-flooded compressor system is provided which has a control for comparing a system temperature and a saturation temperature, wherein by means of a control valve the oil flow can be diverted via a bypass line to increase the oil temperature above the saturation temperature in order to avoid condensate formation in the compressor system.

[0008] Furthermore, the document WO 2020 065 506 A1 describes how to determine the condensation point by means of a humidity measurement or based on the temperature curve at a gas inlet of the compressor unit.

[0009] According to document EP 3 516 230 A1, condensate formation in a screw compressor system is avoided by monitoring the ratio of downtime to on-time of the screw compressor drive and controlling and / or regulating this ratio to a predetermined range.

[0010] Document DE 101 20 206 A1 discloses a method for controlling a compressor for delivering pressure medium to a pressure medium system, wherein the pressure medium delivery is switched off when the temperature signal exceeds a temperature limit. The temperature limit is determined depending on the backpressure generated by the pressure medium system.

[0011] However, these approaches do not allow the inclusion of current operating conditions, especially external conditions that may influence the operation of the vehicle.

[0012] The object of the present invention is to provide a pneumatic system that allows efficient and adaptable handling of the associated compressor system, in particular by incorporating additional (operating) criteria or condition parameters, such as preferably an ambient temperature, into the control or regulation of the compressor system. Furthermore, the object of the present invention is to provide a method for controlling and / or regulating a compressor system, and a vehicle.

[0013] This object is achieved according to the invention by a pneumatic system according to independent claim 1, with regard to a method for control and / or regulation by the subject matter according to claim 4, with regard to a compressor system by the subject matter of claim 5 and with regard to a vehicle by the subject matter of claim 7. Preferred embodiments are specified in the dependent claims.

[0014] According to the present invention, a pneumatic system for a vehicle, in particular a commercial vehicle and / or a rail vehicle, is provided with a compressor system, an air treatment unit and at least one control unit, preferably a second control unit for controlling and / or regulating the compressor system and / or a third control unit for controlling and / or regulating the air treatment unit, wherein the compressor system is provided with at least one compressor unit and at least one compressor drive, wherein the pneumatic system (1), preferably the compressor system, has at least one temperature sensor, in particular for determining an actual temperature on and / or in the compressor unit, and wherein the pneumatic system, preferably the air treatment unit, has at least one pressure sensor, in particular for determining a compressed air requirement.The at least one control unit is designed and connected to the temperature sensor and / or the pressure sensor such that.

[0015] - the compressor drive can be switched on if the at least one control unit can determine an air requirement by means of the pressure sensor and / or an actual temperature can be determined by means of the temperature sensor which is lower than a predeterminable maximum temperature,

[0016] - the compressor drive remains in the switched-on state if the at least one control unit can determine an actual temperature by means of the temperature sensor which is lower than a predeterminable target temperature, and / or

[0017] - the compressor drive can be switched off if the at least one control unit o cannot determine any air requirement by means of the pressure sensor, and / or o an actual temperature can be determined by means of the temperature sensor which is equal to or greater than the predeterminable target temperature or greater than a predeterminable maximum temperature, and / or o at least one vehicle status parameter / criterion / signal can be determined and / or received which requires or necessitates switching off the compressor drive.

[0018] Furthermore, the target temperature can be specified or can be specified by the at least one control unit as a function of an ambient temperature.

[0019] The invention is based on the basic idea that for the pneumatic system, in particular the at least one control unit (Electrical Control Unit - ECU), further (operating) criteria or state parameters relating to the operation of the vehicle can be taken into account for controlling and / or regulating the compressor system, so that an adaptive control or regulation of the vehicle, in particular of individual systems and units of the vehicle, is enabled.

[0020] Preferably, in the sense of the present invention, an ambient temperature can be taken into account by the at least one control unit in order to specify or define a target temperature for the control and / or regulation of the compressor system.

[0021] Accordingly, the target temperature can be adjusted or adapted by the at least one control unit during operation of the vehicle or the compressor system, in particular to changing environmental conditions such as a changing outside / ambient temperature.

[0022] In the sense of the present invention, the at least one control unit or the second and third control unit(s), each individually and / or in various combinations with one another, can be designed to control and / or regulate the individual functionalities of the vehicle, in particular the compressor system and / or the air treatment unit.

[0023] The second and third control units can each be provided as a standalone element in conjunction with the compressor system or the air treatment unit, respectively, or as an (integral) component of the compressor system or the air treatment unit, respectively. Furthermore, the temperature sensor for determining an actual temperature can be provided or arranged on and / or in the compressor unit. Furthermore, the temperature sensor can be provided as a standalone element of the pneumatic system or as an (integral) component of the compressor system.

[0024] For the purposes of the present invention, a maximum temperature can be understood as an arbitrarily set maximum temperature of the system or for the compressor system. Alternatively, the maximum temperature can be based on a legal requirement or regulation, e.g., a legal requirement for oil-injected compressors. Furthermore, for various compressor types, such as scroll compressors or reciprocating piston compressors, preferably for compressor types without oil injection, such a specified maximum temperature, in particular a legally specified maximum temperature, may be omitted.

[0025] Furthermore, it is intended that the compressor drive remains switched on or continues to operate if a determined actual temperature is lower than a preset target temperature.

[0026] In particular, the target temperature can be understood as a temperature below which condensation occurs within the compressor system or the pneumatic system. In this respect, the target temperature within the meaning of the present invention can preferably be understood as a temperature that can be used as a minimum temperature for shutting down the compressor drive and above which proper or appropriate operation of the pneumatic system is possible, i.e., condensation or condensation effects can be at least substantially, preferably entirely, avoided.

[0027] Furthermore, the pressure sensor can be provided as a standalone element of the pneumatic system or as an (integral) component of the air treatment unit. Furthermore, within the meaning of the present invention, a vehicle condition parameter / criterion / signal that may necessitate shutting down the compressor system or compressor drive can be defined as, for example, a low battery capacity (battery level LOW).

[0028] For example, in the case of low battery capacity, it would be possible that ensuring the range of the vehicle, at least for a limited period of time or at a specific point in time, is more important than avoiding condensation in the compressor system, or that a corresponding prioritization of the vehicle range over condensation or condensate formation in the compressor system can be carried out, in particular by the at least one control unit.

[0029] It can be provided that the at least one control unit carries out or can apply a prioritization between an air requirement, an actual temperature and a vehicle condition parameter Z criterion, wherein the vehicle condition parameter Z criterion can be assigned the highest priority for the shutdown of the compressor drive by the at least one control unit.

[0030] The present invention therefore offers the advantage that a control and / or regulation of the pneumatic system, in particular of the compressor system, can be adapted to changing operating conditions, preferably to a changing ambient temperature.

[0031] Furthermore, according to a further preferred embodiment, the second control unit for the compressor system can be designed to determine or define the target temperature based on the ambient temperature, preferably based on a determined ambient temperature andZ or based on at least one received ambient temperature valueZ signal.

[0032] For example, an ambient temperature can be measured or determined using a temperature sensor. Alternatively, an ambient temperature can be received from a central information source, such as a central (internet) server, a cloud service, or the like.

[0033] Preferably, the control and / or regulation of the compressor drive can be carried out at least substantially by the second control unit of the compressor system.

[0034] In particular, in the sense of the present invention, the target temperature can be determined or specified as a function of the ambient temperature.

[0035] According to one embodiment, the third control unit for the air treatment unit is provided in conjunction with the pressure sensor for determining an air requirement at and / or in the air treatment unit.

[0036] Thus, a decision parameter or a decision criterion for switching the compressor drive on or off can be provided using the third control unit of the air treatment unit.

[0037] In particular, the third control unit can use the pressure sensor to determine whether a sufficient supply of air or compressed air is present in the pneumatic system. If there is insufficient supply of air or compressed air in the pneumatic system, the third control unit can determine or establish a (compressed) air requirement for the pneumatic system, for example, using the pressure sensor.

[0038] In this way, the compressor system can be controlled and used in an efficient manner, especially in case of additional (compressed) air requirements in the pneumatic system.

[0039] According to a subordinate aspect of the invention, a method for controlling and / or regulating a pneumatic system and / or a compressor system for a vehicle, in particular the pneumatic system and / or the compressor system of the pneumatic system, wherein the method comprises the following

[0040] steps:

[0041] - Switching on the compressor drive when the at least one control unit determines an air requirement, in particular by means of the pressure sensor, and / or an actual temperature is determined, in particular by means of the temperature sensor, which is lower than a predeterminable maximum temperature,

[0042] - Keeping the compressor drive in the switched-on state when an actual temperature is determined by the at least one control unit, in particular by means of the temperature sensor, which is lower than a predeterminable target temperature, and / or

[0043] - Switching off the compressor drive if the at least one control unit o no air requirement is determined, in particular by means of the pressure sensor, o an actual temperature is determined, in particular by means of the temperature sensor, which is equal to or greater than the predefinable target temperature or greater than a predefinable maximum temperature, and / or o at least one vehicle condition parameter is determined which requires the compressor drive to be switched off, wherein the target temperature can be specified as a function of the ambient temperature, preferably by the at least one control unit, particularly preferably by the second control unit for the compressor system.

[0044] Thus, an advantageous method for controlling and / or regulating a vehicle according to the invention, in particular the associated compressor system, is available, wherein the control or regulation can be adapted to changing operating parameters, such as the environmental parameters.

[0045] According to a further subordinate aspect of the invention, a compressor system, in particular for a pneumatic system according to the present invention, is provided with at least one compressor unit and at least one compressor drive, wherein the compressor system is provided in conjunction with the second control unit. The second control unit is configured to receive and process data signals and / or control signals, in particular from the pressure sensor, the temperature sensor, and / or other control units, such that the compressor system, in particular the compressor drive, can be controlled and / or regulated according to a method according to the invention.

[0046] The temperature sensor is provided or arranged on and / or in the compressor unit to determine the actual temperature. In particular, the temperature sensor can be provided as a standalone element of the pneumatic system or as an (integral) component of the compressor system.

[0047] Furthermore, the second control unit can be provided as a stand-alone element in connection with the compressor system or as an (integral) component of the compressor system.

[0048] The compressor system according to the invention can be designed in the sense of the pneumatic system and / or can be designed to be controllable and / or adjustable in the sense of the method according to the invention.

[0049] In a further preferred embodiment, the compressor system can be provided as

[0050] - a screw compressor system with a screw compressor and a screw compressor drive, preferably designed as at least one electric motor,

[0051] - a vane compressor system with a vane compressor and a vane compressor drive, preferably designed as at least one electric motor

[0052] - a scroll compressor system with a scroll compressor and a scroll compressor drive, preferably designed as at least one electric motor, or

[0053] - as a reciprocating piston compressor system with a reciprocating piston compressor and a reciprocating piston compressor drive, preferably designed as at least one electric motor. Accordingly, the compressor system can have various suitable configurations, particularly for application-specific use in a pneumatic system according to the present invention.

[0054] According to a further subordinate aspect of the invention, a vehicle, in particular a commercial vehicle and / or a rail vehicle, is provided with a pneumatic system and / or a compressor system according to the present invention and with a first control unit.

[0055] The vehicle may therefore have a central first control unit, which may preferably be connected to the second control unit and / or third control unit and / or pressure or temperature sensors of the vehicle.

[0056] According to a preferred embodiment, the vehicle has an ambient temperature sensor in conjunction with the at least one control unit, in particular the first control unit of the vehicle, so that an ambient temperature of the vehicle can be determined. The target temperature can be specified as a function of the ambient temperature, preferably as a function of the ambient temperature, in particular by the at least one control unit, particularly preferably by the first control unit.

[0057] This allows the ambient temperature to be recorded or determined during operation of the vehicle or the compressor system.

[0058] Alternatively, it can be provided that the at least one control unit can obtain or query an ambient temperature of the vehicle, in particular weather information via central information services or from central data servers, for example by means of wireless data transmission, via cloud services or the like.

[0059] Advantageously, the control or regulation of the vehicle can be adapted to current operating conditions, in particular the ambient temperature. According to one embodiment, the first control unit of the vehicle is designed to receive and process at least one ambient temperature value / signal, so that the target temperature can be specified as a function of the ambient temperature value signal, preferably as a function of the ambient temperature value signal.

[0060] According to a further embodiment, the second control unit for the compressor system or the compressor system in connection with

[0061] - the temperature sensor to determine the actual temperature,

[0062] - the ambient temperature sensor for determining an ambient temperature

[0063] - the compressor drive, for switching the compressor drive on and off,

[0064] - the first control unit (10) andZor

[0065] - the third control unit (40).

[0066] According to a further embodiment, the first control unit of the vehicle is connected to the second control unit and the third control unit such that

[0067] - a switch-on signal for switching on the compressor drive, in particular the presence of an air requirement, andZor

[0068] - a switch-off signal for switching off the compressor drive, in particular the presence of no air requirement, can be transmitted by the first control unit of the vehicle to the second control unit of the compressor system, in particular in the form of a confirmation signal can be transmitted by the first control unit to the second control unit.

[0069] In a preferred embodiment, the first control unit of the vehicle is provided for determining and / or checking one or more vehicle condition parameters, so that the driving condition of the vehicle can be checked by means of the first control unit. Preferably, the first control unit of the vehicle, in particular in the sense of a central control unit of the vehicle, can assume or perform or fulfill a confirmation function with respect to the second control unit of the compressor system and the third control unit of the air treatment unit.

[0070] The first control unit can serve as a central confirmation instance that confirms or centrally confirms / releases again the switching on, continued operation or switching off of the compressor drive under the respective corresponding operating conditions, preferably upon request of the second control unit of the compressor system.

[0071] Thus, switching on or off the compressor drive can preferably only take place when the first control unit has sent or transmitted or confirmed a corresponding switch-on or switch-off signal for switching the compressor drive on or off to the second control unit of the compressor system.

[0072] In this sense, the first control unit of the vehicle can assume a (global) master function compared to the second and third control units or can be understood as a master control unit.

[0073] Accordingly, a central confirmation instance for switching the compressor drive on or off, in the sense of the first control unit, can be provided in order to be able to take into account, in particular, centrally recorded operating criteriaZ parameters for the control and / or regulation of the vehicle, in particular of the compressor system.

[0074] All advantages and technical effects achievable in connection with the pneumatic system according to the invention, the method, the compressor system and / or the vehicle can also apply individually or in combination to the other subordinate objects of the present invention.

[0075] Further details and advantages of the invention will now be explained in more detail with reference to the exemplary embodiments illustrated in the drawings. They show:

[0076] Fig. 1 schematic representation of a vehicle with a compressor system and an air treatment unit according to a first embodiment;

[0077] Fig. 2 schematic representation of a vehicle with a compressor system and an air treatment unit according to a second embodiment;

[0078] Fig. 3 is a schematic flowchart relating to the process for switching on or off a compressor drive according to the first embodiment;

[0079] Fig. 4 schematic flowchart relating to the process for switching on or off a compressor drive according to the second embodiment; and

[0080] Fig. 5 schematic flow diagram relating to another possible sequence for switching on or off a compressor drive according to the second embodiment.

[0081] Fig. 1 shows a schematic representation of a vehicle 1 with a compressor system and an air treatment unit 4 according to a first embodiment.

[0082] According to Fig. 1, the compressor system of the vehicle 1 is provided with a compressor unit

[0083] 2, a compressor drive 3, a temperature sensor 200, and a second control unit 30. Alternatively, the temperature sensor 200 and / or the second control unit 30 can be designed individually or independently of and in conjunction with the compressor system.

[0084] The air treatment unit 4 can be designed in conjunction with a pressure sensor 400 and a third control unit 40.

[0085] Alternatively, the pressure sensor 400 and / or the third control unit 40 can be designed individually or independently of and in connection with the air treatment unit 4.

[0086] Furthermore, the vehicle 1 can have an ambient temperature sensor 100.

[0087] The temperature sensor 200 and the ambient temperature sensor 100 can be connected or connectable to the second control unit 30, in particular for signal or data transmission.

[0088] The pressure sensor 400 can be connected or connectable to the third control unit 40, in particular for signal or data transmission.

[0089] According to Fig. 1, it can be provided that the second control unit 30 and the third control unit 40 have a signal or data connection to one another, preferably for data or signal transmission from the third control unit 40 of the air treatment unit 4 to the second control unit 30 of the compressor system.

[0090] In the sense of the embodiment according to Fig. 1 , a vehicle 1 , in particular a commercial vehicle or a rail vehicle with a compressor system 2, driven by a compressor drive or an electric motor 3, can be provided, wherein the electric motor 3 can be controlled or regulated by means of a first control unit 30.

[0091] The compressor unit 2 can have the temperature sensor 200, which is read by the second control unit or ECU 30. The commercial / rail vehicle 1 can also have the ambient temperature sensor 100, which is preferably read by the second control unit or ECU 30 via a data bus.

[0092] An air treatment unit 4, which has the pressure sensor 400, can be read by means of the third control unit or ECU 40.

[0093] The third control unit or ECU 40 of the air treatment unit 4 can communicate with the second control unit or ECU 30, in particular so that an operative connection can be established via a data bus.

[0094] Fig. 2 shows a schematic representation of a vehicle with a compressor system and an air treatment unit according to a second embodiment.

[0095] In particular, the second embodiment according to Fig. 2 differs from the first embodiment according to Fig. 1 in that a first control unit 10 of the vehicle 1 is arranged or interposed between the second control unit 30 and the third control unit 40.

[0096] In this way, the first control unit or ECU 10 of the vehicle 1 can be connected to the operative connection between the third control unit or ECU 40 for the air treatment unit 4 and the second control unit or ECU 30 for the compressor system, in particular for checking and / or confirming the control or regulating signals to the second control unit 30 of the compressor system.

[0097] Fig. 3 illustrates a schematic flow chart relating to the process for switching on or off a compressor drive 3 according to the first embodiment.

[0098] The compressor unit 2 or the compressor drive 3 is switched on 600 when the air treatment unit 4, through the third control unit 40 of the air treatment unit 4, determines an air requirement in the pneumatic system 500 by means of the pressure sensor 400 and / or the second control unit 30 of the compressor system confirms a temperature in and / or on the compressor unit 3 that is lower than a maximum temperature or maximum permissible temperature 800 by means of the temperature sensor 200.

[0099] In order to prevent condensation in the compressor system or a housing of the compressor system, the compressor unit 2 continues to operate after being switched on 600 by the second control unit 30 of the compressor system or continues to run 700 if the determined actual temperature is lower than a predefinable target temperature 800.

[0100] The target temperature may be provided as a function of the ambient temperature of the vehicle 1.

[0101] The compressor unit 2 or the compressor drive 3 can be switched off 600 if the air treatment unit 4, through the associated third control unit or ECU 40 by means of the pressure sensor 400, detects no (compressed) air requirement or detects a sufficient (compressed) air supply 500 and if the actual temperature at or in the compressor unit 2 is greater than or equal to the target temperature 800 or if the second control unit 30 of the compressor system detects or can determine an actual temperature greater than a maximum permissible temperature or maximum temperature by means of the temperature sensor 200 800.

[0102] Fig. 4 shows a schematic flowchart relating to the procedure for switching on or off a compressor drive 700 according to the second embodiment.

[0103] If the air treatment unit 4 detects an air requirement 500 through the third control unit or ECU 40 using the pressure sensor 400, a corresponding (air requirement) signal can be sent from the second control unit or ECU 40 to the first control unit or ECU 10 of the vehicle. The first control unit 10 then confirms the switch-on signal to the second control unit or ECU 30 of the compressor system, so that the compressor drive or electric motor 3 is switched on 700, provided that the second control unit 30 has detected a sufficient actual temperature on and / or in the compressor unit 2 using the temperature sensor 200 800, preferably less than a maximum permissible temperature or maximum temperature.

[0104] In order to prevent condensation in a housing of the compressor system, the compressor unit 2 can be kept in operation or continued to be operated 600 after being switched on 700 by the second control unit 30 if the ascertainable actual temperature is lower than a predefinable target temperature 800.

[0105] This can be implemented by the second control unit 30 sending or transmitting the information or a signal about the actual temperature or a confirmation request signal regarding switching on 700 of the compressor drive 3 (“compressor delivery requirement to avoid condensation”) to the first control unit 10 of the vehicle 1 and the first control unit 10 then sending or transmitting back a switch-on signal or a confirmation signal to the second control unit 30.

[0106] The compressor drive 3 can be switched off 700 by the second control unit 30 when the second control unit 30 receives a switch-off signal from the first control unit or ECU 10 of the vehicle 1.

[0107] For this purpose, it can be provided that the air treatment unit 4, through the associated third control unit 40 by means of the pressure sensor 400, detects or determines 500; 600 no (compressed) air requirement and the actual temperature is greater than or equal to the target temperature 800 and / or if the second control unit 30 of the compressor system, by means of the temperature sensor 200, transmits an actual temperature that is greater than a maximum permissible temperature or a predeterminable maximum temperature to the first control unit 10 of the vehicle 1. Fig. 5 shows a schematic flow diagram relating to a further possible sequence for switching on or off a compressor drive 3 according to the second exemplary embodiment.

[0108] In particular, the possible sequence or flow chart according to Fig. 5 differs from the flow chart according to Fig. 4 in the inclusion or

[0109] Consideration of further vehicle-side abort operating criteria 900 by the first control unit 10 of vehicle 1.

[0110] In order to prevent or avoid condensation in the compressor system or a housing of the compressor system, the compressor unit 2 is continued to be operated after being switched on 700 by means of the second control unit 30 or is kept in the switched-on mode 600 if the actual temperature is lower than a target temperature 800.

[0111] This can be implemented by the second control unit 30 first sending or transmitting the information regarding the actual temperature to the first control unit 10 of the vehicle 1.

[0112] If the first control unit or ECU 10 does not have any vehicle-side termination criteria or operating parameters 900 that could necessitate or justify an operation termination or switching off 700 of the compressor drive 3, the first control unit 10 sends a switch-on signal back to the second control unit 30 of the compressor system.

[0113] The compressor drive 3 is switched off by the second control unit 30 600;

[0114] 700, when the second control unit 30 receives a switch-off signal from the first control unit or ECU 10 of the vehicle. Such a switch-off or switch-off signal can be triggered if the air treatment unit 4, through the associated third control unit or ECU 40 by means of the pressure sensor 400, detects no (compressed) air requirement 500 and the actual temperature at or in the compressor unit 2 is greater than or equal to the predeterminable target temperature 800 and / or if the second control unit 30 of the compressor system transmits an actual temperature greater than a maximum permissible temperature or maximum temperature to the first control unit 10 of the vehicle by means of the temperature sensor 200 and / or if other vehicle-side operating parameters are present 900 that can justify a deactivation or switch-off 600; 700 of the compressor drive 3 or the compressor unit 2.

[0115] In summary, the present invention provides a pneumatic system, a method for controlling and / or regulating, a compressor system and a vehicle, so that an efficient and adaptive or adaptable operation of an associated compressor system can be enabled.

[0116] In particular, external influencing parameters, such as an ambient temperature and / or other operating parameters of the vehicle, can be taken into account, preferably for the targeted adaptation of a target temperature of the compressor system or the compressor unit 2.

[0117] Thus, the compressor unit 2 or the associated compressor drive 3 can be switched on or off depending on changing operating parameters or influencing conditions.

[0118] In addition, a central check or confirmation of the switching-on or switching-off process of the compressor drive 3, carried out by the second control unit 30, can be provided by means of the first control unit 10 of the vehicle 1. Thus, a central control and verification instance, preferably for taking into account other vehicle-side operating parameters, can be provided, particularly by means of the first control unit 10 of the vehicle.

[0119] LIST OF REFERENCE SYMBOLS

[0120] 1 vehicle

[0121] 2 Compressor unit 3 Compressor drive

[0122] 4 Air treatment unit

[0123] 10 first control unit or ECU (of the vehicle)

[0124] 30 second control unit or ECU (of the compressor system)

[0125] 40 third control unit or ECU (of the air treatment unit) 100 ambient temperature sensor

[0126] 200 temperature sensor

[0127] 400 pressure sensor

[0128] 500 (compressed) air requirement - yes / no?

[0129] 600 Case differentiation - Compressor unit or compressor drive on / off? 700 Switch compressor unit or compressor drive on / off

[0130] 800 Actual temperature too low / too high?

[0131] 900 (vehicle-side) operating parameters

Claims

PATENT CLAIMS 1. Pneumatic system for a vehicle (1), in particular a commercial vehicle and / or a rail vehicle, with a compressor system, an air treatment unit (4) and at least one control unit (30; 40), preferably a second control unit (30) for controlling and / or regulating the compressor system and / or a third control unit (40) for controlling and / or regulating the air treatment unit (4), wherein the compressor system is provided with at least one compressor unit (2) and at least one compressor drive (3), wherein the pneumatic system (1), preferably the compressor system, has at least one temperature sensor (200), in particular for determining an actual temperature on and / or in the compressor unit (2), wherein the pneumatic system (1), preferably the air treatment unit (4), has at least one pressure sensor (400), in particular for determining a compressed air requirement, wherein the at least one control unit (30;40) is designed and connected to the temperature sensor (200) and / or to the pressure sensor (400) such that; - the compressor drive (3) can be switched on when an air requirement can be determined by the at least one control unit (30; 40) by means of the pressure sensor (400) and / or an actual temperature can be determined by means of the temperature sensor (200) which is lower than a predeterminable maximum temperature, - the compressor drive (3) remains in the switched-on state if an actual temperature can be determined by the at least one control unit (30; 40) by means of the temperature sensor (200) which is lower than a predeterminable target temperature, and / or - the compressor drive (3) can be switched off if the at least one control unit (30; 40) o no air requirement can be determined by means of the pressure sensor (400), o an actual temperature can be determined by means of the temperature sensor (200) which is equal to or greater than the predeterminable target temperature or greater than a predeterminable maximum temperature, and / or o at least one vehicle state parameter can be determined and / or received, which requires switching off the compressor drive (3), wherein the target temperature is predetermined by the at least one control unit (30; 40) as a function of an ambient temperature.

2. Pneumatic system according to claim 1, characterized in that the second control unit (30) for the compressor system is designed to determine the target temperature based on the ambient temperature, preferably based on a determined ambient temperature and / or based on at least one received ambient temperature value.

3. Pneumatic system according to one of the preceding claims, characterized in that the third control unit (40) for the air treatment unit (4) is provided in conjunction with the pressure sensor (400) for determining an air requirement at and / or in the air treatment unit (4).

4. A method for controlling and / or regulating a pneumatic system and / or a compressor system for a vehicle (1), in particular the pneumatic system and / or the compressor system of the pneumatic system according to one of the preceding claims, wherein the method comprises the following steps: - switching on the compressor drive (3) when the at least one control unit (30; 40) determines an air requirement by means of the pressure sensor (400) and / or an actual temperature is determined which is lower than a predeterminable maximum temperature, - keeping the compressor drive (3) in the switched-on state when the at least one control unit (30; 40) determines an actual temperature which is lower than a predeterminable target temperature, and / or - Switching off the compressor drive (3) when the at least one control unit (30; 40) o no air requirement is determined, o an actual temperature is determined which is equal to or greater than the predeterminable target temperature or greater than a predeterminable maximum temperature, and / or o at least one vehicle condition parameter is determined which requires the compressor drive (3) to be switched off, wherein the target temperature is predetermined as a function of the ambient temperature, preferably by the at least one control unit (30; 40).

5. Compressor system, in particular for a pneumatic system according to one of the preceding claims, with the at least one compressor unit (2) and the at least one compressor drive (3), wherein the compressor system is provided in connection with the second control unit (30), wherein the second control unit (30) is designed to receive and process data signals and / or control signals, in particular of the pressure sensor (400), the temperature sensor (200) and / or other control units (10; 40), such that the compressor system, in particular the compressor drive (3), can be controlled and / or regulated according to a method according to claim 4.

6. Compressor system according to claim 5, characterized in that the compressor system is provided as - a screw compressor system with a screw compressor (2) and a screw compressor drive (3), preferably designed as at least one electric motor; - a vane compressor system with a vane compressor (2) and a vane compressor drive (3), preferably designed as at least one electric motor, - a scroll compressor system with a scroll compressor (2) and a scroll compressor drive (3), preferably designed as at least one electric motor, or as a reciprocating piston compressor system with a reciprocating piston compressor (2) and a reciprocating piston compressor drive (3), preferably designed as at least one electric motor.

7. Vehicle (1), in particular a commercial vehicle and / or a rail vehicle, with a pneumatic system and / or a compressor system according to one of the preceding claims and with a first control unit (10).

8. Vehicle (1) according to claim 7, characterized in that the vehicle (1) has an ambient temperature sensor (100) in connection with the at least one control unit (10; 30; 40), in particular the first control unit (10) of the vehicle (1), so that an ambient temperature of the vehicle (1) can be determined, wherein the target temperature can be predetermined as a function of the ambient temperature, preferably as a function of the ambient temperature, in particular by the at least one control unit (10; 30; 40).

9. Vehicle (1) according to claim 7, characterized in that the first control unit (10) of the vehicle (1) is designed to receive and process at least one ambient temperature value, so that the target temperature can be specified as a function of the ambient temperature value, preferably as a function of the ambient temperature value.

10. Vehicle (100) according to one of claims 7 to 9, characterized in that the second control unit (30) for the compressor system in conjunction with - the temperature sensor (200) for determining an actual temperature, - the ambient temperature sensor (100) for determining an ambient temperature, - the compressor drive (3), for switching the compressor drive (3) on and off, - the first control unit (10), and / or - the third control unit (40) is provided.

11. Vehicle (1) according to one of claims 7 to 10, characterized in that the first control unit (10) of the vehicle (1) is connected to the second control unit (30) and the third control unit (40) in such a way that - a switch-on signal for switching on the compressor drive (3), in particular the presence of an air requirement, and / or - a switch-off signal for switching off the compressor drive (3), in particular the presence of no air requirement, can be transmitted by the first control unit (10) of the vehicle to the second control unit (30) of the compressor system, in particular in the form of a confirmation signal can be transmitted by the first control unit (10) to the second control unit (30).

12. Vehicle (1) according to one of claims 7 to 11, characterized in that the first control unit (10) of the vehicle (1) is provided for determining and / or checking one or more vehicle state parameters, so that the driving state of the vehicle (1) can be checked by means of the first control unit (10).

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