CN1826257A - Method and device for identifying malfunctioning of a compressed air consumer circuit in an electronic compressed air system for a vehicle - Google Patents
Method and device for identifying malfunctioning of a compressed air consumer circuit in an electronic compressed air system for a vehicle Download PDFInfo
- Publication number
- CN1826257A CN1826257A CNA2004800212141A CN200480021214A CN1826257A CN 1826257 A CN1826257 A CN 1826257A CN A2004800212141 A CNA2004800212141 A CN A2004800212141A CN 200480021214 A CN200480021214 A CN 200480021214A CN 1826257 A CN1826257 A CN 1826257A
- Authority
- CN
- China
- Prior art keywords
- loop
- state variable
- air
- pressure
- pressurized air
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 14
- 230000007257 malfunction Effects 0.000 abstract 2
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
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
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
-
- 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
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
-
- 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
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/02—Arrangements of pumps or compressors, or control devices therefor
-
- 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
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
In order to identify malfunctioning of a compressed air consumer circuit in a compressed air system for vehicles, the pressure in the compressed air circuits (26, 28, 30, 32, 34, 36) routinely measured and evaluated in an electronic control unit (84), which compares pressure values and/or detected negative pressure gradients of the compressed air circuits with a threshold value (S) and blocks the corresponding compressed air consumer circuit if the pressure values and/or the negative pressure gradients meet a circuit malfunction criterion. Said circuit malfunction criterion is met when the pressure values and/or the pressure gradients fall short of the corresponding threshold value over a given time that is identical or greater than the time tdyn of a dynamic pressure change or a dynamic pressure drop (t>=tdyn).
Description
The present invention relates to according to a kind of method of the preamble of claim 1 with according to a kind of device of the preamble of claim 4, consume fault in the loop with the pressurized air that is used for detecting the vehicle electronic compressed air system.
Existing multiloop protective valve, these valves can be assigned to energy source several and independently consume the loop mutually, even the loop et out of order, during as pipeline breaking, still can keep minimum pressure in loop in working order.When amount that the amount of air of loss can replenish greater than compressor, the pressure in the discovery foot brake loop can descend, when reaching the pressure of valve-off till.Pressure in the fault loop continues to descend, and pressure still can keep the shutoff pressure value in loop in working order.Though the pressure in the fault loop continue to descend, available compressor is inflated loop in working order still again, up to reach fault loop open force value the time till.So just set up a dynamical equilibrium, though wherein air is lost simultaneously at the fault place, the pressurized air of being carried can be supplied loop still in working order (and secondary consumption loop).In the process of short time consumption of compressed air, as under the situation of emergency braking, the transient behavior pressure loss can take place, this pressure loss is not corresponding with the pressure store in single consumption loop.This behavior is more obvious than the loop with pressurized air storage container in the loop that does not have the pressurized air storage container.A shortcoming of existing known multiloop protective valve is, when lower pressure level appearred in the loop of problem, they will react and close problematic loop such dynamic pressure forfeiture.Therefore, such transient behavior pressure loss can cause closing the loop circuit too early under lower pressure level, even corresponding pressure still is higher than shutoff pressure when (pressure loss) incident finishes.
Therefore the purpose of this invention is to provide the device of a kind of method and the above-mentioned type, thereby avoid closing because of corresponding of short duration dynamic pressure forfeiture consumes the loop with pressurized air too early.
About this method, can realize this goal by the present invention according to claim 1.The device that is used for implementing this method is set forth to some extent in claim 4.
Advantage of the present invention and favourable improvement have illustrated in the appended claims.
The present invention need want to measure the state variable (pressure, air rate, air quality, energy) that each pressurized air consumes the loop, and check measured state variable value, perhaps if possible, whether the negative gradient of the state variable in a schedule time satisfies the standard of judging loop fault.Only problematic pressurized air could be consumed the loop when having satisfied this loop fault standard closes.According to the method for being invented, can avoid because of corresponding of short duration dynamic pressure forfeiture, for example during emergency braking, and closes compression consumption of air loop too early.Therefore, improve the safety performance that can improve vehicle for the delivery of energy that consumes the loop because of the lower pressurized air of consumption of air stress level.The design of being invented guarantees that the lower pressurized air of stress level consumes the pressurized air supply that the loop will obtain the long period.
To on the basis of an example shown in the drawings, be described in more details below, a real example be shown in these accompanying drawings the present invention, wherein:
Fig. 1 shows the structured flowchart of the device of being invented;
The chart of the pressure variation between when Fig. 2 shows explanation and air for continuous consumed in the time that limits with described loop when a pressurized air consumes the loop et out of order.
In the accompanying drawings, the effective solid line of pressure fluid represents that the circuitry lines with dashed lines is represented.
There is shown one and have pressurized air supply section 4 and the compressed air system 2 that consumes part 6.Pressurized air supply section 4 comprises a compressor 7, a compressor control device 8 and a dry air part 10.
Consume and dispose pressurized air distribution pipe 14, a plurality of motorized valve 16,18,20,22,24 (preferably being electromagnetic valve) and a plurality of pressurized air consumption loop 26,28,30,32,34,36,38 with recovery spring on the part 6, these consume loops and supply pressurized air through electromagnetic valve.
One pressurized air supply pipe 40 leads to distribution pipe 14 from compressor 7 by a filter 42, an air dryer 44 and a boiler check valve 46, and all arms 48,50,52,54,56 that lead to all electromagnetic valves are arranged from distribution pipe 14.Compressed air tube 58,60,62,64,66 leads to the consumption loop via all electromagnetic valves.Pipe 62 is provided with branched pipe 62 ' and 62 ", they lead to loop 30 and 32, at pipe 62 " in be equipped with boiler check valve 68.In supply pipe 52, be equipped with a voltage limiter 70.The pipe 54 that leads to electromagnetic valve 22 forms branch in the downstream of voltage limiter 70.Pipe 64 is provided with and is branched off into pipe 64 ' and 64 ", they lead to loop 34 and 36.
The all pressurized airs of pressure sensor 72,74,76,78,80,82 monitorings consume the pressure in loop and the distribution pipe 14, and each pressure are passed to the electronic control unit 84 of all electromagnetic valves of direct control unit controls as pressure signal.
Pressurized air consumes loop 26,28 and can be for example foot brake loop.Pressurized air consumes loop 30 and can be the trailer braking protection valve loop, in this case, and common two tubes a: supply pipe and a brake pipe that leads to trailer.Pressurized air consumes loop 32 and can be the hand braking loop that has spring accumulator.Pressurized air consumes loop 34 and 36 and can be secondary and consume the loop, such as operator's compartment suspension, door controller etc., in other words, i.e. all assemblies that have nothing to do with brake circuit.Pressurized air consumes loop 38 and can be high tension loop.
Foot brake loop 26,28 is provided with the pressurized air reservoir vessel 90,92 of conform European standard (EU Directive) 98/12.
Device of the present invention or compressed air system can be saved the pressurized air storage container in loop 30,32,34,36 and the high tension loop 38.For example, as long as the braking function or the braking maneuver of foot brake loop 26 and 28 are not weakened, promptly by allowing to carry out air feed to other consumer by foot brake loop (loop 26 and 28).
By a pipe 40 ', compressor 7 is controlled by compressor controller 8 machineries (pneumatic).Compressor controller 8 comprises the less electromagnetic valve of a Nominal Width 94, and this electromagnetic valve can be switched by electronic control unit 84.As shown in the figure, it is opened under the normality of outage, and at this moment, thereby compressor 7 starts.As want close compressor 7, for example consume when all being full of pressurized air in the loop when all pressurized airs, just the position of control unit 84 switching solenoid valves 94, but the compressor that pressure is started cuts out by pipe 40 '.If electromagnetic valve 94 is switched to off-position, for example when pressurized air consumption loop needs pressurized air, once more electromagnetic valve 94 is switched to the normal condition shown in the figure once more, at this moment, pipe 40 ' is opened, and compressor 7 restarts.
Dry air part 10 comprises that one has the electromagnetic valve 100 of less Nominal Width, the import 102 of this electromagnetic valve is communicated with distribution pipe 14, its outlet 104 is connected with the shut off valve 106 that pneumatic switching is arranged, and this valve that dams is communicated with the supply pipe 40 of compressor 7 and as the deflation hole of air dryer.
When electromagnetic valve 100 was switched to connected state, compressor 7 no longer consumed to send in the loop to pressurized air and fills, but passes through valve 106 to atmospheric exhaust.Simultaneously, dry air is then by flowing through air dryer 44 from distribution pipe 14 (being connected with the storage container 90,92 in foot brake loop) through electromagnetic valve 100, flow regulating valve 108 and boiler check valve 110, make its desiccant regeneration, air passes through filter 42 and valve 106 exhaust to atmospheres more then.
Label 112 expressions one overpressure valve.
Electromagnetic valve 16,18,20,22,24 is by control unit 84 controls, and the electromagnetic valve 16 to 22 in pressurized air consumption loop 26 to 34 is under the outage normal condition to be opened, and the electromagnetic valve 24 of high tension loop is in closing under the outage normal condition.Also can use all guiding controlled electromagnetic valves.Pressure in the loop is directly monitored at the electromagnetic valve place by pressure sensor 72,74,76,78,80.
Rely on design plan of the present invention, not working pressure storage container (except that the foot brake loop) in consuming the loop.
If the pressure that pressurized air consumes in loop, for example loop 30 (the trailer braking protection valve loop) will descend, pressurized air also can be supplied in foot brake loop 26 and 28 so, voltage limiter 70 pressurized air can be consumed pressure in the loop 30 to 36 adjust to will be lower than the pressure in the foot brake loop (for example 10.5bar) level, 8.5bar for example.High tension loop is closed for 38 this moments, not with other circuit communication.Pressure in the high tension loop consumes the loop usually above other pressurized air, for example is 12.5bar.
Consume in the loop in the pressurized air lower because of the consumption of air stress level; or under the situation of using multiloop protective valve commonly used; if because of the dynamic pressure forfeiture in the short time such as the former of the operation in braking procedure thereby the generation utmost point; for example during emergency brake, close danger immediately even still exist or not because of analogues such as pipeline breaking also can consume the loop with problematic pressurized air.In order to prevent the appearance of this situation, the present invention propose by electronic control unit 84 measure each pressurized air consume in loop pressure also/or determine its negative pressure gradient, and they are compared (see figure 2) with a lower limit S who presets respectively.The limit of pressure is corresponding with the pressure that will regulate in each pressurized air consumption loop.If pressure decay is to this below limit, and/or as negative pressure gradient be reduced to one corresponding below the limit, this represent because of break, reason such as breakage, in problematic pressurized air consumption loop fault has taken place.In order to determine whether this conclusion is correct, carry out the standard that a test determines whether to satisfy loop fault.Make the pressure test (see figure 2) in the schedule time t for this reason.Dynamic pressure changes or the time t of dynamic pressure forfeiture being equal to or greater than when force value and/or pressure gradient
DynTime t in (t 〉=t
Dyn) be lower than each limit, then the loop fault standard is met.Therefore, has only the time length t 〉=t that is lower than limit S as the result
DynShi Caike determines that finally problematic pressurized air consumes the loop and has fault, t
DynIt is the dynamic pressure forfeiture time from start to end.Then, problematic pressurized air consumes the loop and promptly is closed.Therefore, because having obtained compensating rather than problematic pressurized air is consumed the loop, operation dynamic event former thereby that cause closed too early unfriendly, just as situation originally.Time t
DynReside in the program of control unit 84, perhaps measure in real time.t
DynThe example of typical time be 1 second.
By curve 76A, chart shown in Figure 2 shows for example pressure variation of pressurized air consumption loop 30 when the et out of order of loop.Pressure is at instantaneous point t
1The place drops to below the limit S, and has passed through time t 〉=t
2-t
1〉=t
DynThe back is at instantaneous point t
2The place still is lower than this value.At this moment, electronic control unit 84 has detected pressurized air and has consumed loop 30 et out of orders, since the loop fault standard satisfies, then is about to this loop by electromagnetic valve 20 and closes.
Curve 76B among Fig. 2 is presented at the pressure that several continuous pressurized airs consume in the dynamic process in the limiting time to be changed.In example shown in Figure 2, in the 5th dynamic compression consumption of air, up to instantaneous point t
3Till, pressure does not drop to below the limit S.At instantaneous point t4 place, pressure goes back up to more than the limit once more, and at this moment, the dynamic compression consumption of air finishes.Because time t=t
4-t
3＜t
Dyn, problematic loop is not closed, because the loop fault standard is not met.Only in dynamic compression consumption of air process subsequently, promptly from instantaneous point t
5Beginning is as time t 〉=t
6-t
5〉=t
DynThe time pressure drop to below the limit again.In the case, satisfied the loop fault standard, problematic loop promptly is closed.
Except pressure, also might monitor other state variable, for example pressurized air consumes charge air, air quality and the energy etc. in the loop.
Claims (7)
1. the method for the fault in the consumption of air loop in the compressed air system that detects automobile, wherein all pressurized airs of continuous gauging consume the actual value of the state variable (pressure, charge air, air quality, energy) in the loop, and in an electronic control unit, assess, it is characterized in that, may further comprise the steps:
All pressurized airs is consumed the value of state variable in loop and/or state variable negative gradient value and separately limit relatively; And
When the negative gradient of the value of state variable and/or state variable satisfies the loop fault standard, close this corresponding problematic pressurized air and consume the loop.
2. the method for claim 1 is characterized in that, the time t of the dynamic change that is equal to or greater than state variable when the value of state variable and/or the time of gradient below limit separately or the dynamic forfeiture of state variable
Dyn(t 〉=t
Dyn) time, satisfy the loop fault standard.
3. method as claimed in claim 1 or 2 is characterized in that, the limit of state variable is corresponding with the state variable that will regulate in each pressurized air consumption loop.
4. the device of the fault in the consumption of air loop of detecting in the compressed air system, this compressed air system has a pressurized air supply section and that is provided with a compressor and is provided with the consumption part that a plurality of pressurized airs consume the loop, these pressurized airs consume the loop and obtain compressed-air actuated supply via all motorized valves, pressure in wherein all pressurized air consumption loop is by all sensor, the electric signal of these sensors is then assessed by the electronic control unit of all motorized valves of a control, it is characterized in that, pressurized air consumes loop (26,28,30,32,34,36) motorized valve (16 in, 18,20,22) open, and, in order to detect the fault in the pressurized air consumption loop, state variable value (the pressure that control unit (84) will record, charge air, air quality, energy) and/or the negative gradient of a state variable compare with a limit separately and a pressurized air loop be defined as defectiveness or fault is arranged, if and the force value in this loop and pressure gradient satisfy the loop fault standard, then the valve that will be associated with this pressurized air consumption loop switches to off position, thereby closes this problematic loop.
5. device as claimed in claim 4 is characterized in that, the time t of the dynamic change that is equal to or greater than state variable as the value and/or the time t of gradient below limit separately of the state variable of examining or the dynamic forfeiture of state variable
Dyn(t 〉=t
Dyn) time, satisfy the loop fault standard.
6. device as claimed in claim 4 is characterized in that, it is corresponding that the limit of state variable and each pressurized air consume the state variable value that will regulate in loop.
7. device as claimed in claim 4 is characterized in that, all motorized valves are electromagnetic valve.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10334316.4 | 2003-07-28 | ||
| DE10334316 | 2003-07-28 | ||
| DE0357766.1 | 2003-12-10 | ||
| DE10357766.1 | 2003-12-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1826257A true CN1826257A (en) | 2006-08-30 |
| CN100400351C CN100400351C (en) | 2008-07-09 |
Family
ID=34177219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800212141A Expired - Lifetime CN100400351C (en) | 2003-07-28 | 2004-07-12 | Method and device for identifying malfunctioning of a compressed air consumer circuit in an electronic compressed air system for a vehicle |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100400351C (en) |
| DE (1) | DE10357766A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103376477A (en) * | 2012-04-20 | 2013-10-30 | 天纳克-埃贝赫（大连）排气***有限公司 | Compressed air detection warning device of silencer welding work station |
| CN110300687A (en) * | 2017-03-06 | 2019-10-01 | 日立汽车***株式会社 | The apparatus for diagnosis of abnormality and abnormality diagnostic method of power assisting device |
| CN111391808A (en) * | 2019-01-03 | 2020-07-10 | 现代摩比斯株式会社 | Vehicle brake device and control method thereof |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007025835B4 (en) * | 2007-06-02 | 2012-09-06 | Daimler Ag | Diagnosis of leaks in compressed air systems, especially in commercial vehicles |
| DE102007046944B4 (en) * | 2007-10-01 | 2010-09-16 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Compressed air supply device with leakage analysis and method for operating such a compressed air supply device |
| EP2052768B1 (en) | 2007-10-25 | 2011-07-20 | KNORR-BREMSE Systeme für Nutzfahrzeuge GmbH | Air filter system for a commercial vehicle and method of controlling the air filter system |
| DE102008047631A1 (en) * | 2008-09-17 | 2010-03-25 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Method for operating a parking brake module in the event of a defect and for performing the method suitable parking brake module |
| DE102010024476A1 (en) * | 2010-06-21 | 2011-12-22 | Wabco Gmbh | Compressed air control device, compressed air control method, electronic control device, compressed air supply system, compressed air supply method and vehicle |
| DE102012102490C5 (en) | 2012-03-22 | 2022-12-01 | Haldex Brake Products Aktiebolag | Compressed air treatment device for a commercial vehicle |
| EP2789512B2 (en) | 2013-04-12 | 2021-08-25 | Haldex Brake Products GmbH | Compressed air supply device for a commercial vehicle |
| DE102013015157A1 (en) * | 2013-09-11 | 2015-03-12 | Wabco Gmbh | Air treatment plant for the compressed air supply of commercial vehicles |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19515895A1 (en) * | 1995-04-29 | 1996-10-31 | Bosch Gmbh Robert | Compressed air supply device for vehicle compressed air systems and method for controlling the compressed air supply device |
| DE19622095A1 (en) * | 1996-06-01 | 1997-12-04 | Wabco Gmbh | Pressure system |
| DE10004091C2 (en) * | 2000-01-31 | 2002-11-14 | Knorr Bremse Systeme | Compressed air supply device for vehicle compressed air systems |
| DE10029125B4 (en) * | 2000-06-14 | 2004-08-26 | Siemens Ag | Alarm device for a compressed air controlled braking system of a vehicle |
| DE10142790B4 (en) * | 2001-08-31 | 2007-01-18 | Winkle, Günther, Dipl.-Ing.(TU) | Brake diagnostics for rail and road vehicles |
-
2003
- 2003-12-10 DE DE10357766A patent/DE10357766A1/en not_active Withdrawn
-
2004
- 2004-07-12 CN CNB2004800212141A patent/CN100400351C/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103376477A (en) * | 2012-04-20 | 2013-10-30 | 天纳克-埃贝赫（大连）排气***有限公司 | Compressed air detection warning device of silencer welding work station |
| CN110300687A (en) * | 2017-03-06 | 2019-10-01 | 日立汽车***株式会社 | The apparatus for diagnosis of abnormality and abnormality diagnostic method of power assisting device |
| CN111391808A (en) * | 2019-01-03 | 2020-07-10 | 现代摩比斯株式会社 | Vehicle brake device and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100400351C (en) | 2008-07-09 |
| DE10357766A1 (en) | 2005-03-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2449908C2 (en) | Compressed air feed system and method | |
| US4538228A (en) | Hydraulic pressure actuated brake system for rail vehicles | |
| CN100400351C (en) | Method and device for identifying malfunctioning of a compressed air consumer circuit in an electronic compressed air system for a vehicle | |
| US9028011B2 (en) | Method for operating a parking brake module in the event of defects and parking brake module suitable for performing the method | |
| CN100423975C (en) | Electronic compressed air system | |
| US8870299B2 (en) | Main brake device of a vehicle having test run for valves | |
| US6679569B2 (en) | Method and device for controlling a brake system | |
| US4685941A (en) | Compressed air supplying device | |
| GB2309759A (en) | Checking the braking system of a vehicle | |
| EP1529704B1 (en) | Method and device for controlling regulation, drying and regeneration of a regulator dryer unit in a pneumatic-hydraulic braking system of a vehicle | |
| US8220876B2 (en) | Electronic compressed air system | |
| CN100415585C (en) | Testing method and device of defect or fault in condensation air consuming loop of vehicle electronic condensation air system | |
| US7877186B2 (en) | Method and system for identifying a malfunctioning compressed air consumer circuit in a vehicle electronic compressed air system | |
| US7946660B2 (en) | Electronic compressed-air system | |
| US7866760B2 (en) | Method and system for refilling brake circuits after a large consumption of compressed air | |
| CN100389034C (en) | Electronic condensation air system | |
| CA2162971C (en) | System and method for automatically calibrating transducers in electro-pneumatic freight brake control systems | |
| KR200261336Y1 (en) | Eletronically Controlled Brake System for Train Car | |
| US7895883B2 (en) | Method and system for identifying a defect or failure of a compressed air load circuit in an electronic compressed air installation for vehicles | |
| CN100478227C (en) | Method for refilling brake circuits after a large consumption of compressed air and device for carrying out said method | |
| KR100426272B1 (en) | Eletronically Controlled Brake System for Train Car | |
| EP0784003B1 (en) | Assembly for controlling braking of a railway train | |
| CN115675429A (en) | Auxiliary device with fault self-diagnosis function | |
| US7204567B2 (en) | Method and device for detecting residual pressure in a braking system in particular in a braking cylinder | |
| KR100353249B1 (en) | Method for detecting abnormality of anti-lock brake system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: WABCO CO., LTD. Free format text: FORMER NAME: WABCO LIMITED PARTNERSHIP |
|
| CP03 | Change of name, title or address |
Address after: Hannover Patentee after: WABCO GmbH Address before: Hannover Patentee before: Wabco GmbH & Co. OHG |
|
| ASS | Succession or assignment of patent right |
Owner name: WABCO EUROPE LLC Free format text: FORMER OWNER: WABCO CO., LTD. Effective date: 20130801 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130801 Address after: Brussels Patentee after: WABCO EUROPE BVBA Address before: Hannover Patentee before: WABCO GmbH |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080709 |