EP4416021A1 - Verfahren zum betreiben eines pneumatischen systems, pneumatisches system, fahrzeug - Google Patents
Verfahren zum betreiben eines pneumatischen systems, pneumatisches system, fahrzeugInfo
- Publication number
- EP4416021A1 EP4416021A1 EP22802008.7A EP22802008A EP4416021A1 EP 4416021 A1 EP4416021 A1 EP 4416021A1 EP 22802008 A EP22802008 A EP 22802008A EP 4416021 A1 EP4416021 A1 EP 4416021A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vehicle
- compressor
- compressed air
- cleaning device
- sensor cleaning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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- 238000004140 cleaning Methods 0.000 claims abstract description 98
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- 238000011161 development Methods 0.000 description 17
- 230000018109 developmental process Effects 0.000 description 17
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- 230000000694 effects Effects 0.000 description 4
- GHOKWGTUZJEAQD-ZETCQYMHSA-N (D)-(+)-Pantothenic acid Chemical compound OCC(C)(C)[C@@H](O)C(=O)NCCC(O)=O GHOKWGTUZJEAQD-ZETCQYMHSA-N 0.000 description 3
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/10—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels by utilising wheel movement for accumulating energy, e.g. driving air compressors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/54—Cleaning windscreens, windows or optical devices using gas, e.g. hot air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/56—Cleaning windscreens, windows or optical devices specially adapted for cleaning other parts or devices than front windows or windscreens
Definitions
- the invention relates to a method for operating a pneumatic system according to the preamble of claim 1 .
- the invention further relates to a pneumatic system for a vehicle, and a vehicle.
- Pneumatic systems for vehicles with a compressor for generating compressed air are commonly known.
- approaches are known in which the compressor is driven in a non-driven operating mode of the vehicle in order to use available energy to generate compressed air.
- DE 10 2013 001 720 B4 describes a system for recovering braking energy, in which compressed air can also be generated by means of an electric air charging system. As such, a cutoff air pressure threshold may be increased under certain circumstances.
- the object of which is to specify a pneumatic system and a method for operating a pneumatic system which is improved with regard to at least one of the problems mentioned above.
- the kinetic energy present in the vehicle should be used better.
- the object is achieved by the invention in a first aspect with a method according to claim 1.
- the invention is based on a method for operating a pneumatic system for a vehicle, the pneumatic system having a compressor for providing compressed air and at least one sensor cleaning device, and the sensor cleaning device is designed to accept the compressed air and, when activated, as a compressed air flow for at least one providing a cleaning nozzle, the method comprising the steps of: operating the vehicle in a non-powered operating mode in which the vehicle is in motion and is not significantly propelled by a prime mover; Switching on the compressor.
- “Not significantly driven” means in particular that no driving engine torque is provided by the drive.
- the step is provided in the method: activating the at least one sensor cleaning device.
- the invention is based on the knowledge that the use of existing, in particular kinetic, energy of a vehicle in different forms of energy is fundamentally advantageous.
- the invention has recognized that by means of a pneumatic system, the energy present in a drive-free operating mode can also be used in pneumatic form, ie can be converted into pneumatic energy.
- the invention includes the finding that the use of additional pneumatic consumers, which can also be operated sensibly at the moment when the kinetic energy is available, advantageously expands the possibilities for using the existing kinetic energy.
- a sensor cleaning device is one of such a further pneumatic consumer.
- a compressed air reservoir is not necessarily required for the meaningful use of a sensor cleaning device within the scope of the use of existing kinetic energy. Rather, in a drive-free operating mode, when the activation condition is met, the sensor cleaning device can be activated in order to use the kinetic energy present in the vehicle, which is converted into pneumatic energy by switching on the compressor, directly and in particular without additional requirements for further intermediate storage.
- the available kinetic energy of the vehicle is advantageously converted into compressed air and used to clean at least one sensor surface. This advantageously achieves a cleaning and/or drying effect, as a result of which the function of the sensors can be ensured and the safety and/or driving comfort of the vehicle can be increased.
- the predetermined pressure conditions preferably relate to a pneumatic system of the vehicle, particularly preferably a pressure accumulator that is installed in the vehicle.
- the compressor switch-on condition is preferably met when an accumulator pressure is not greater than an upper switch-off pressure, which is preferably a technically dictated maximum filling limit of the compressed air accumulator.
- the compressor is switched on when the compressor switch-on condition is met.
- the development has recognized that too high a pressure, in particular accumulator pressure, is disadvantageous for the condition of the pneumatic system, in particular a pressure accumulator.
- the upper switch-off pressure represents in particular a limit value which, from a technical point of view, should not be exceeded, in particular to avoid any damage to the compressed air reservoir and/or the pneumatic system.
- the activation condition is preferably met when an accumulator pressure in a compressed air accumulator pneumatically connected to the compressor is greater than an activation pressure.
- the sensor cleaning device is activated when the activation condition is full.
- both the vehicle in order to meet the activation condition, both the vehicle must be in a non-driven operating mode and the accumulator pressure must be greater than an activation pressure.
- This development advantageously avoids situations in which, despite a low accumulator pressure, the kinetic energy present in the drive-free operating mode is made available for the sensor cleaning device. Rather, in such a case, this existing kinetic energy is used to fill up the compressed air reservoir.
- the activation pressure is advantageously in a range from 9.5 bar to 13.5 bar, preferably in a range from 10.5 bar to 12.5 bar, and the activation pressure is particularly preferably 11.5 bar.
- the activation pressure is a lower cut-off pressure that is lower than the upper cut-off pressure.
- the lower cut-off pressure is a pressure limit value which is a defined amount below the upper cut-off pressure, and in particular represents a cut-off pressure for the compressor under normal conditions, i.e. when the existing kinetic energy is not used.
- the compressed air reservoir is always filled up to the lower cut-off pressure.
- the range between the lower and the upper cut-off pressure thus represents an additional pneumatic buffer capacity that can be used for pneumatic conversion of the kinetic energy present in the non-driven operating mode, and can be made available particularly advantageously for the sensor cleaning device in the form of compressed air.
- the upper switch-off pressure in a range from 11.5 bar to 15.5 bar, preferably in a range from 12.5 bar to 14.5 bar, the upper switch-off pressure is particularly preferably 13.5 bar.
- the lower cut-off pressure is advantageously in a range from 10.5 bar to 14.5 bar, preferably in a range from 11.5 bar to 13.5 bar, and the lower cut-off pressure is particularly preferably 12.5 bar.
- the activation pressure is a dynamically determined activation pressure, preferably determinable based on a predicted overrun duration of the non-driven operating mode.
- operating data of the vehicle and/or a navigation device can be used to predict how long the vehicle is estimated to be in a non-driven operating mode, in particular overrun mode. If, for example, there is a longer distance downhill ahead, the activation pressure can be chosen correspondingly low, since a longer phase of available kinetic energy can be assumed. In such a case, it can therefore be assumed that sufficient compressed air can be generated to supply the sensor cleaning device on the one hand, but also to supply other pneumatic consumers on the other hand, preferably to fill up a compressed air reservoir.
- the drive-free operating mode is an overrun mode in which the drive is driven by a driving movement of the vehicle, or the drive-free operating mode is a deceleration mode in which the vehicle is decelerated via a deceleration request. If the non-driven mode of operation is a deceleration mode, the method according to the concept of the invention has the advantage that by the conversion of kinetic energy into pneumatic energy produces a braking effect.
- a drive-free operating mode no drive torque is transmitted to the vehicle by the drive, but the driving movement is generated by the inertia of the vehicle and/or the gravitational force acting on the vehicle while driving downhill.
- no drive torque is requested in the drive-free operating mode.
- the kinetic energy that is available in this way can advantageously be used according to the concept of the invention by switching on the compressor and/or activating the sensor cleaning device.
- overrun mode in particular, there is a frictional connection between the vehicle, in particular its wheels, and the drive, ie the vehicle rolls with the gear engaged.
- Overrun mode can be advantageously determined by the electronic control unit using operating data of the vehicle, preferably by determining a state in which no drive torque is requested but a gear is engaged.
- Switching on the compressor preferably includes engaging the compressor by means of a clutch device, particularly preferably to a drive or to another component driven by a vehicle movement.
- switching on the compressor can include electronic activation of an electrically or electronically driven compressor.
- the activation of the at least one sensor cleaning device opens a valve, preferably a solenoid valve, which includes at least one sensor cleaning device.
- a valve preferably a solenoid valve
- compressed air can advantageously be applied to at least one sensor surface assigned to the sensor cleaning device for the purpose of cleaning.
- the compressor is operated in a throttled compressor mode.
- the throttled compressor operation is such that a current compressed air delivery quantity of the compressor providing compressed air is approximately equal to a current compressed air consumption quantity of the at least one sensor cleaning device.
- the throttled compressor operation can be implemented in different ways. In the case of an electrically driven compressor, this can take place in particular by regulating the electric motor driving the compressor.
- throttled compressor operation characterizes a compressor with an adjustable delivery rate.
- throttled compressor operation can be implemented via a gear or appropriate pneumatic actuating means such as throttle valves.
- the invention achieves the object in a second aspect of a pneumatic system for a vehicle, having a compressor designed to provide compressed air, at least one sensor cleaning device designed to accept the compressed air and, when activated, as a compressed air flow for at least one cleaning nozzle provide, and an electronic control unit, designed to control the compressor and/or the sensor cleaning system, wherein the vehicle can be operated in a drive-free operating mode in which the vehicle is in motion and is not significantly driven by a drive of the vehicle, and the electronic Control unit is designed to switch on the compressor in the non-driven operating mode.
- the electronic control unit is designed to activate the at least one sensor cleaning device in the drive-free operating mode.
- the electronic control unit is designed to switch on the compressor and/or activate the at least one sensor cleaning device within the framework of predetermined pressure conditions.
- the at least one sensor cleaning device has a valve, preferably a switching valve, particularly preferably a solenoid valve, which can be switched, preferably opened, to activate the sensor cleaning device.
- the valve is designed to direct the compressed air as a continuous flow of compressed air to the cleaning nozzle, preferably past a pulse valve of the sensor cleaning device, with the activation of the sensor cleaning device comprising opening the valve.
- the invention achieves the object in a third aspect of a vehicle, preferably a commercial vehicle or passenger car, having a pneumatic system according to the second aspect of the invention and/or an electronic control unit designed to carry out a method according to the first aspect of the invention.
- FIG. 1 shows a first preferred embodiment of a vehicle according to the concept of the invention
- FIG. 3 shows a schematic diagram with a profile of a storage pressure and the operating state of a compressor and a sensor cleaning device as a function of time T for a vehicle not shown in detail according to the concept of FIG
- FIG. 1 shows a vehicle 1000 in the form of a commercial vehicle 1002 with a pneumatic system 800 according to the concept of the invention. Nevertheless, within the scope of the invention, the vehicle 1000 can be designed differently, for example as a passenger car 1004.
- the vehicle 1000 has a drive 1050 with a combustion engine 1060 and is therefore a combustion vehicle 1006.
- the drive 1050 is designed to generate a rotational movement R and to generate the driving movement FB via a drive shaft 1052 to wheels 512, in this case two wheels 512 of a rear axle 534 of the vehicle 1000, to transmit this.
- the drive 1050 further includes a transmission 1056 for selectively adjusting a gear ratio of the rotational motion R, and an input clutch 1054 for selectively disconnecting transmission of the rotational motion R i .
- the pneumatic system 800 has a compressor 602 for generating and providing compressed air DL.
- the compressor 602 is embodied as a mechanically driven compressor 606 and can be selectively coupled to the drive 1050 , in the present case via the drive shaft 1052 , by means of a coupling device 612 .
- the pneumatic system 800 also has a compressed air reservoir 604, which is designed to receive and store the compressed air DL.
- the compressed air reservoir 604 is pneumatically connected to the compressor 602 via a multi-circuit protection valve 1082 . Nevertheless, other embodiments are possible within the scope of the invention, in which the pneumatic system 800 of a vehicle 1000 does not have a compressed air reservoir 604 .
- the vehicle 1000 has a sensor cleaning system 200 with a sensor cleaning device 100.
- the sensor cleaning device 100 is pneumatically connected or connectable to the compressor 602 via the multi-circuit protection valve 1082.
- the sensor cleaning device 100 is embodied as a central sensor cleaning module 400 for supplying cleaning nozzles 320 with compressed air DL and optionally further cleaning media such as cleaning liquid.
- Two cleaning nozzles 320 are shown here as an example; in other embodiments, the sensor cleaning system 200 can have a plurality of sensor cleaning devices 100 .
- Vehicle 1000 has an electronic control unit 700 that is designed to control compressor 602 and/or sensor cleaning system 200.
- Vehicle 1000 is driven by drive 1050 in a driven operating mode BM.
- the drive 1050 here the internal combustion engine 1060, generates a drive torque AM and transmits this to the wheels 512 by means of the drive shaft 1052 in order to generate the driving movement FB.
- a drive-free operating mode BF of vehicle 1000 vehicle 1000 is in motion, but is not significantly driven by drive 1050 .
- travel movement FB is thus caused in particular by a mass inertia of vehicle 1000 and/or—if vehicle 1000 is moving downhill—by the earth's gravitational pull.
- Vehicle 1000 has a kinetic energy K in this state.
- the drive-free operating mode BF is an overrun mode BS, in which the drive clutch 1054 is in the closed state.
- there is in particular no acceleration request AB which means in particular no drive torque AM is requested from internal combustion engine 1060 and/or from drive 1050.
- a deceleration mode BV can be present, in which the vehicle 1000 is decelerated via a deceleration request AV.
- the deceleration request AV can be made in particular to a braking system that is not shown here.
- Electronic control unit 700 is designed to switch on compressor 602 and/or to activate sensor cleaning device 100 within the framework of predetermined pressure conditions DB.
- the vehicle 1000 is designed by means of the electronic control unit 700 to switch on the compressor 602 for generating compressed air DL in the drive-free operating mode BF by switching the clutch device 612 into a closed state 612A when a compressor Switch-on condition BEV is met.
- the compressor switch-on condition BEV is preferably met, as is the case here, if a storage pressure PS in compressed air storage 604 is less than or equal to an upper cut-off pressure PAO, which is a technically conditioned maximum filling limit PMAX of compressed air storage 604.
- PAO an upper cut-off pressure
- PMAX a technically conditioned maximum filling limit PMAX of compressed air storage 604.
- the compressor 602 is switched off by switching the clutch device 612 into an open state 612B when the accumulator pressure PS has reached a critical maximum value in the form of the upper cut-off pressure PAO.
- energy present during a drive-free operating mode BF can advantageously be used to provide compressed air DL to supply the at least one sensor cleaning device 100 and/or
- Vehicle 1000 is further configured by means of electronic control unit 700 to activate sensor cleaning device 100 as a function of an activation condition BEA, specifically preferably when compressor switch-on condition BEV is also met.
- the electronic control unit 700 is particularly preferably designed to activate the sensor cleaning device 100 when the activation condition BEA is met and to deactivate the sensor cleaning device 100 when the activation condition BEA is not met.
- the at least one sensor cleaning device 100 When the at least one sensor cleaning device 100 is activated, in particular a switching valve 270 of the sensor cleaning device 100 is opened, compressed air DL provided is provided to the cleaning nozzle 320 for the purpose of cleaning a sensor surface 300 .
- the sensor cleaning device 100 has a valve 328, preferably a switching valve 270, particularly preferably a solenoid valve 272 as shown here.
- the cleaning nozzle 320 is arranged and designed to conduct the compressed air DL provided as a compressed air flow DLS onto the sensor surface 300 for the purpose of cleaning.
- the compressed air flow DLS can be approximately constant or have a different shape or profile, for example in the form of pulses.
- the solenoid valve 272 can be designed as a 2/2-way valve or as another valve, for example a 3/2-way valve. be formed.
- the pneumatic system 800 is advantageously designed in such a way that a current compressed air delivery quantity MPD of the compressor 602 providing the compressed air DL corresponds to a current compressed air consumption quantity MPV of the sensor cleaning device 100 .
- the instantaneous compressed air delivery rate MPD and the instantaneous compressed air consumption rate MPV can be mass or volume information, or mass or volume information per time.
- the compressor 602 is preferably designed to be operated in a throttled compressor mode VD.
- the instantaneous compressed air delivery rate MPD can be set, preferably to an instantaneously required amount, particularly preferably to the instantaneous compressed air consumption rate MPV.
- the compressor 602 can preferably be designed to be electrically controllable or adjustable by means of a gear or a similar control device. Signal-carrying and/or electrical lines are shown in dotted lines in the figures, while lines carrying compressed air are shown in dashed lines.
- FIG. 2 shows a further preferred embodiment of a vehicle 1000 in the form of an electric vehicle 1008.
- the vehicle 1000 can be designed as a passenger car 1002 or as a commercial vehicle 1004 or as another vehicle 1000.
- the vehicle 1000 shown here has a drive 1050 with a number of electric motors 1070 .
- an electric motor 1070 is positioned on each wheel 512 .
- Each electric motor is designed to transmit a drive torque AM to the wheel 512 assigned to it.
- a central electric motor 1070 can be provided, which transmits a drive torque AM to one or more wheels 512, for example via a drive shaft 1052—as shown in FIG. 1—to generate a driving movement FB.
- the vehicle 1000 has a traction battery 1072 which is live with the electric motors 1070 in order Supply of electrical energy is connected.
- the traction battery 1072 is also connected to an onboard power supply battery 1080 via an inverter 1074 and a voltage converter 1078 .
- the voltage converter 1078 is in the form of a high/low-voltage DC converter which can convert a high DC voltage, for example 400 V, into a low DC voltage, for example 12 V or 24 V or 48 V. Electrical energy with a relatively low DC voltage, for example 12 V or 24 V or 48 V, is stored in the vehicle electrical system battery 1080 .
- Vehicle 1000 also has a pneumatic system 800 which includes a compressor 602 in the form of an electric compressor 608 .
- Electric compressor 608 is supplied with electrical energy by vehicle electrical system battery 1080 .
- the pneumatic system 800 also includes a multi-circuit protection valve 1082, via which the at least one sensor cleaning device 100 is pneumatically connected, analogously to the embodiment shown in FIG.
- the sensor cleaning device 100 is shown in a highly simplified manner for the sake of clarity. For further details, such as switching valves and cleaning nozzles, reference is made to FIG.
- the vehicle 1000 may include a fuel cell 1076 for generating electrical energy, as shown here in phantom.
- the pneumatic system 800 can have a compressed air reservoir 604 for storing compressed air DL.
- vehicle 1000 can be operated in a driven operating mode BM and a non-driven operating mode BF.
- Vehicle 1000 is driven by drive 1050 in a driven operating mode BM.
- the drive 1050 here the electric motors 1070, generates a drive torque AM and transmits this by means of the wheels 512 to generate the driving movement FB.
- a drive-free operating mode BF of vehicle 1000 vehicle 1000 is in motion but is not being driven by drive 1050 .
- Vehicle 1000 has a kinetic energy K in this state.
- non-driven operating mode BF travel movement FB is thus caused in particular by a mass inertia of vehicle 1000 and/or—if vehicle 1000 is moving downhill—by the earth's gravitational pull.
- the drive-free operating mode BF is an overrun mode BS.
- there is in particular no acceleration request AB which means in particular no drive torque AM is requested from internal combustion engine 1060 and/or from drive 1050.
- a deceleration mode BV can be present, in which the vehicle 1000 is decelerated via a deceleration request AV.
- the deceleration request AV can be made in particular to a braking system (not shown here) and/or to the electric motors 1070 . If the deceleration request AV is made of the electric motors 1070, these can be operated as electric generators by means of appropriate control and generate electric energy while generating a braking effect and make it available to the traction battery 1072.
- the electrically driven compressor 608 is not mechanically but electrically coupled to the drive 1050 .
- electrical energy E can be provided via the electric motors 1070 operated as electrical generators, preferably to the traction battery 1072.
- the energy available in the drive-free operating mode BF is thus not made available directly as a rotational movement R, but in electrical form to the electrically driven compressor 608 for generating compressed air DL. In particular, this can take place independently of an energy store, such as the traction battery 1072 or the vehicle electrical system battery 1080 .
- the electrical energy that is available in the drive-free operating mode BF may be temporarily stored in the traction battery 1072 and/or the vehicle electrical system battery 1080 .
- the test is preferably fen the predetermined pressure conditions DB, in particular the compressor switch-on condition BEV and/or the activation condition BEA, and the control of the compressor 602, by means of the electronic control unit 700.
- a throttled compressor operation VD can advantageously be implemented with relatively little effort , In particular via a corresponding control.
- Vehicle 1000 is further configured by means of electronic control unit 700 to activate sensor cleaning device 100 as a function of an activation condition BEA, specifically preferably when compressor switch-on condition BEV is also met.
- the electronic control unit 700 is particularly preferably designed to activate the sensor cleaning device 100 when the activation condition BEA is met and to deactivate the sensor cleaning device 100 when the activation condition BEA is not met.
- Fig. 3 shows a schematic diagram with a profile of an accumulator pressure PS and the operating state of a compressor 602 and a sensor cleaning device 100 as a function of time T for a vehicle 1000, not shown in detail.
- the accumulator pressure PS is above the activation pressure PA , approx. at 11.8 bar.
- vehicle 1000 is in the driven operating mode BM.
- the activation pressure PA can be a dynamically determined activation pressure PAD, which is preferably variably determined as a function of a predicted overrun duration DS of the non-driven operating mode BF.
- the vehicle changes from the driven operating mode BM to the non-driven operating mode BF.
- the compressor switch-on condition BEV is met because the vehicle 1000 is in the drive-free operating mode BF and the accumulator pressure PS is below an upper switch-off pressure PAO. Consequently, compressor 602 is turned on, as illustrated here with the binary signal going to a 1 value.
- the activity BEA is also met, since the vehicle 1000 is in the non-driven operating mode BF and the accumulator pressure PS is above the activation pressure PA. Consequently, the sensor cleaning device 100 is activated in order to apply the compressed air DL generated by the compressor 602 to at least one sensor surface 300 .
- the activation of the sensor cleaning device 100 is also illustrated with a binary signal that switches to the value 1.
- the accumulator pressure PS has reached the upper switch-off pressure PAO of approximately 13.5 bar.
- the compressor switch-on condition BEV is no longer met and consequently the compressor 602 is switched off.
- the sensor cleaning device 100 remains activated since the activation condition BEA is still met.
- the accumulator pressure PS has reached the lower switch-off pressure PAU of approximately 12.5 bar, as a result of which the compressor switch-on condition BEV is met again and the compressor 602 is switched on.
- the activation condition BEA is still met and the sensor cleaning device 100 consequently remains activated.
- vehicle 1000 changes back to non-driven operating mode BF, with compressor switch-on condition BEV and activation condition BEA being met.
- compressor switch-on condition BEV and activation condition BEA being met.
- a current compressed air delivery rate MPD is provided by the compressor 602, which approximately corresponds to a compressed air quantity MPV currently required by the sensor cleaning device 100. Consequently, the accumulator pressure PS remains approximately constant.
- the compressed air delivery rate MPD is set in such a way that it is less than the currently required air volume MPV. Consequently, the accumulator pressure PS decreases.
- the compressed air delivery rate MPD is set in such a way that it is higher than the currently required compressed air rate MPV, as a result of which the accumulator pressure PS increases. This should make it clear that a storage pressure can be set as desired or preferably kept constant by means of a throttled compressor operation VD without having to switch the compressor 602 on or off frequently.
- the activation pressure PA represents a minimum threshold below which the sensor cleaning device 100 is not activated within the scope of the method according to the concept of the invention, in order not to allow the accumulator pressure PS to drop too much. Nevertheless, an activation of the sensor cleaning device 100 is of course possible—independently of the method according to the concept of the invention.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Fluid-Pressure Circuits (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021126341.7A DE102021126341A1 (de) | 2021-10-12 | 2021-10-12 | Verfahren zum Betreiben eines pneumatischen Systems, Pneumatisches System, Fahrzeug |
| PCT/EP2022/076662 WO2023061735A1 (de) | 2021-10-12 | 2022-09-26 | Verfahren zum betreiben eines pneumatischen systems, pneumatisches system, fahrzeug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4416021A1 true EP4416021A1 (de) | 2024-08-21 |
Family
ID=84332326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22802008.7A Withdrawn EP4416021A1 (de) | 2021-10-12 | 2022-09-26 | Verfahren zum betreiben eines pneumatischen systems, pneumatisches system, fahrzeug |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20240262317A1 (de) |
| EP (1) | EP4416021A1 (de) |
| CN (1) | CN117999200A (de) |
| DE (1) | DE102021126341A1 (de) |
| WO (1) | WO2023061735A1 (de) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010018949A1 (de) | 2010-04-30 | 2011-11-03 | Wabco Gmbh | Druckluftaufbereitungseinrichtung, Druckluftversorgungssystem mit einer Druckluftaufbereitungseinrichtung und Aufbereitungsmodul hierfür sowie Verfahren zum Betrieb einer Druckluftaufbereitungseinrichtung, Steuermodul und Fahrzeug mit einer Druckluftaufbereitungseinrichtung |
| US8543273B2 (en) | 2012-02-08 | 2013-09-24 | Bendix Commercial Vehicle Systems Llc | Cruise control with braking activated brake regeneration |
| US10518754B2 (en) * | 2017-04-07 | 2019-12-31 | Uatc, Llc | Autonomous vehicle sensor cleaning system |
| DE102017010254A1 (de) | 2017-11-06 | 2019-05-09 | Wabco Gmbh | Reinigungsvorrichtung, Druckluftsystem, Reinigungsverfahren |
| DE102020202446A1 (de) | 2020-02-26 | 2021-08-26 | Vitesco Technologies GmbH | Reinigungsvorrichtung |
| DE102020202571A1 (de) | 2020-02-28 | 2021-09-02 | Vitesco Technologies GmbH | Reinigungsvorrichtung |
| DE102020202570A1 (de) | 2020-02-28 | 2021-09-02 | Vitesco Technologies GmbH | Reinigungsvorrichtung |
-
2021
- 2021-10-12 DE DE102021126341.7A patent/DE102021126341A1/de active Pending
-
2022
- 2022-09-26 CN CN202280064932.5A patent/CN117999200A/zh active Pending
- 2022-09-26 WO PCT/EP2022/076662 patent/WO2023061735A1/de not_active Ceased
- 2022-09-26 EP EP22802008.7A patent/EP4416021A1/de not_active Withdrawn
-
2024
- 2024-04-09 US US18/630,591 patent/US20240262317A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US20240262317A1 (en) | 2024-08-08 |
| WO2023061735A1 (de) | 2023-04-20 |
| DE102021126341A1 (de) | 2023-04-13 |
| CN117999200A (zh) | 2024-05-07 |
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