DE102017210477A1 - Method and device for detecting a pressure loss in a tire of a motor vehicle - Google Patents
Method and device for detecting a pressure loss in a tire of a motor vehicle Download PDFInfo
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- DE102017210477A1 DE102017210477A1 DE102017210477.5A DE102017210477A DE102017210477A1 DE 102017210477 A1 DE102017210477 A1 DE 102017210477A1 DE 102017210477 A DE102017210477 A DE 102017210477A DE 102017210477 A1 DE102017210477 A1 DE 102017210477A1
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- tire
- pressure loss
- shock absorber
- determined
- behavior
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000006096 absorbing agent Substances 0.000 claims abstract description 21
- 230000035939 shock Effects 0.000 claims abstract description 21
- 230000006835 compression Effects 0.000 claims description 18
- 238000007906 compression Methods 0.000 claims description 18
- 230000002123 temporal effect Effects 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/0195—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the regulation being combined with other vehicle control systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/06—Signalling devices actuated by deformation of the tyre, e.g. tyre mounted deformation sensors or indirect determination of tyre deformation based on wheel speed, wheel-centre to ground distance or inclination of wheel axle
- B60C23/065—Signalling devices actuated by deformation of the tyre, e.g. tyre mounted deformation sensors or indirect determination of tyre deformation based on wheel speed, wheel-centre to ground distance or inclination of wheel axle by monitoring vibrations in tyres or suspensions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/019—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the type of sensor or the arrangement thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/12—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to parameters of the vehicle itself, e.g. tyre models
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/10—Mounting of suspension elements
- B60G2204/11—Mounting of sensors thereon
- B60G2204/112—Mounting of sensors thereon on dampers, e.g. fluid dampers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
- B60G2400/25—Stroke; Height; Displacement
- B60G2400/252—Stroke; Height; Displacement vertical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
- B60G2400/50—Pressure
- B60G2400/52—Pressure in tyre
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
- B60G2400/80—Exterior conditions
- B60G2400/82—Ground surface
- B60G2400/821—Uneven, rough road sensing affecting vehicle body vibration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
- B60G2600/04—Means for informing, instructing or displaying
- B60G2600/042—Monitoring means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
- B60G2600/08—Failure or malfunction detecting means
- B60G2600/084—Supervisory systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
- B60G2800/90—System Controller type
- B60G2800/984—Tyre Pressure Monitoring Systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/22—Suspension systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/22—Suspension systems
- B60W2510/227—Oscillation frequency
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2530/00—Input parameters relating to vehicle conditions or values, not covered by groups B60W2510/00 or B60W2520/00
- B60W2530/20—Tyre data
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Transportation (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Die Erfindung betrifft ein Verfahren zur Erkennung eines Druckverlusts in einem Reifen eines Kraftfahrzeugs, bei dem
- mittels eines Sensors eine das Verhalten eines Stoßdämpfers charakterisierende Größe erfasst wird und
- abhängig von der das Verhalten des Stoßdämpfers charakterisierenden Größe das Vorliegen eines Druckverlusts in dem Reifen ermittelt wird.
The invention relates to a method for detecting a pressure loss in a tire of a motor vehicle, in which
- By means of a sensor characterizing the behavior of a shock absorber size is detected and
depending on the magnitude characterizing the behavior of the shock absorber, the presence of a pressure loss in the tire is determined.
Description
Stand der TechnikState of the art
Aus der
Offenbarung der ErfindungDisclosure of the invention
Die Erfindung betrifft ein Verfahren zur Erkennung eines Druckverlusts in einem Reifen eines Kraftfahrzeugs, bei dem
- - mittels eines Sensors eine das Verhalten eines Stoßdämpfers charakterisierende Größe erfasst wird und
- - abhängig von der das Verhalten des Stoßdämpfers charakterisierenden Größe das Vorliegen eines Druckverlusts in dem Reifen ermittelt wird.
- - By means of a sensor characterizing the behavior of a shock absorber size is detected and
- depending on the magnitude characterizing the behavior of the shock absorber, the presence of a pressure loss in the tire is determined.
Da in zahlreichen modernen Fahrzeugen bereits adaptive Fahrwerke mit entsprechender Sensorik verbaut sind, kann damit die erfindungsgemäße Funktion ohne nennenswerten Zusatzaufwand realisiert werden.Since adaptive trolleys with corresponding sensors are already installed in numerous modern vehicles, the function according to the invention can thus be realized without significant additional effort.
Eine vorteilhafte Ausgestaltung der Erfindung ist dadurch gekennzeichnet, dass es sich bei der das Verhalten des Stoßdämpfers charakterisierenden Größe um dessen Einfederweg handelt, da dieser mit Sensormitteln relativ leicht erfasst werden kann.An advantageous embodiment of the invention is characterized in that the characteristic of the behavior of the shock absorber is its compression travel, since this can be detected relatively easily with sensor means.
Eine vorteilhafte Ausgestaltung der Erfindung ist dadurch gekennzeichnet, dass der zeitliche Verlauf des Einfederwegs ausgewertet wird.An advantageous embodiment of the invention is characterized in that the time course of the compression travel is evaluated.
Eine vorteilhafte Ausgestaltung der Erfindung ist dadurch gekennzeichnet, dass anhand der Straßenoberflächenbeschaffenheit ein zeitlicher Referenzverlauf des Einfederwegs ermittelt wird, dass der ermittelte zeitliche Verlauf des Einfederweges mit dem Referenzverlauf verglichen wird und abhängig davon das Vorliegen eines Druckverlusts in dem Reifen ermittelt wird.An advantageous embodiment of the invention is characterized in that based on the road surface condition a temporal reference course of the compression travel is determined that the determined time profile of the compression travel is compared with the reference curve and depending on the existence of a pressure loss in the tire is determined.
Eine vorteilhafte Ausgestaltung der Erfindung ist dadurch gekennzeichnet, dass das Vorliegen eines Druckverlusts in dem Reifen für vorgegebene Fahrsituationen ermittelt wird, bei denen ein zeitlicher Referenzverlauf vorliegt.An advantageous embodiment of the invention is characterized in that the presence of a pressure loss in the tire for predetermined driving situations is determined, in which a temporal reference curve is present.
Eine vorteilhafte Ausgestaltung der Erfindung ist dadurch gekennzeichnet, dass es sich bei dem Referenzverlauf um den zeitlichen Verlauf des Einfederwegs handelt, bei dem der entsprechende Reifen den für den Normalbetrieb vorgesehenen Luftdruck aufweist.An advantageous embodiment of the invention is characterized in that it is in the reference curve to the time course of the compression travel, in which the corresponding tire has the intended for normal operation air pressure.
Eine vorteilhafte Ausgestaltung der Erfindung ist dadurch gekennzeichnet, dass es sich bei dem Stoßdämpfer um den dem betrachteten Reifen zugeordneten Stoßdämpfer handelt.An advantageous embodiment of the invention is characterized in that the shock absorber is the shock absorber associated with the tire under consideration.
Eine vorteilhafte Ausgestaltung der Erfindung ist dadurch gekennzeichnet, dass es sich bei dem Reifendruckverlust um einen vollständigen Druckverlust, insbesondere um einen geplatzten Reifen handelt.An advantageous embodiment of the invention is characterized in that the tire pressure loss is a complete pressure loss, in particular a burst tire.
Weiter umfasst die Erfindung eine Vorrichtung, enthaltend Mittel, die zur Durchführung der erfindungsgemäßen Verfahren ausgestaltet sind. Dabei handelt es sich insbesondere um ein Steuergerät, in welchem der Programmcode zur Durchführung der erfindungsgemäßen Verfahren hinterlegt ist.Furthermore, the invention comprises a device containing means which are designed for carrying out the method according to the invention. This is in particular a control device in which the program code for carrying out the method according to the invention is stored.
Die Zeichnung umfasst
In
Das vorgestellte System dient zur Erkennung von Druckverlust in einem Fahrzeugreifen bzw. der Erkennung eines geänderten Abrollverhaltens des Reifens eines Fahrzeugs. Dazu werden die Ausgangssignale eines das Verhalten eines Stoßdämpfers erfassenden Sensors ausgewertet, um daraus Rückschlüsse auf den Reifendruck des dem Stoßdämpfer zugeordneten Reifens zu ziehen. Sollte ein Reifen an Druck verlieren, dann äußert sich dies in den Kräften, welche auf den Stoßdämpfer wirken. Damit ist eine zumindest grobe Beurteilung des Reifendrucks ohne einen im Reifen verbauten Reifendrucksensor möglich.The presented system is used to detect pressure loss in a vehicle tire or to detect a changed rolling behavior of the tire of a vehicle. For this purpose, the output signals of a sensor which detects the behavior of a shock absorber are evaluated in order to draw conclusions about the tire pressure of the tire assigned to the shock absorber. Should a tire lose pressure, this is reflected in the forces acting on the shock absorber. This makes possible an at least rough assessment of the tire pressure without a tire pressure sensor installed in the tire.
Sind weiterhin Informationen über die Fahrbahnbeschaffenheit bekannt, dann können diese ebenfalls in die Ermittlung des Reifendrucks einfließen. Für die Ermittlung des Reifendrucks eines Reifens können die Informationen aller Stoßdämpfer in Kombination gebracht werden und gesamtheitlich ausgewertet werden. Es kann aber auch eine Analyse eines einzelnen Stoßdämpfers genutzt werden, um einen Rückschluss auf den jeweiligen Reifen zu ermöglichen.If, furthermore, information about the road surface is known, then it can also be incorporated into the determination of the tire pressure. To determine the tire pressure of a tire, the information of all shock absorbers can be combined and evaluated holistically. However, an analysis of a single shock absorber can also be used to make it possible to draw conclusions about the particular tire.
Aufgrund von Straßenunebenheiten wirken Vertikalkräfte auf die Stoßdämpfer eines Fahrzeugs, welche sich in Ein- und Ausfederungen der Stoßdämpfer äußern. Die Vertikalbewegungen der Stoßdämpfer können durch Erfassung von deren Einfederwegen charakterisiert werden. Die Einfederwege der dem jeweiligen Rad zugeordneten Stoßdämpfer können für jedes Rad von einem Sensor erfasst und in einem Steuergerät auf deren Plausibilität hin überprüft werden. Durch Auswertung des zeitlichen Verlaufs der Einfederwege kann auch die Art der Straßenunebenheit festgestellt werden. Bodenwellen äußern sich beispielsweise durch Einfederwegsschwingungen zuerst der Räder einer Achse und kurz darauf der Räder der anderen Achse. Ein Schlagloch äußert sich meist durch Einfederwegsschwingungen nur eines Rades einer Achse und zeitlich kurz darauf eine Einfederwegsschwingung des Rades an der anderen Achse, aber auf derselben Fahrzeugseite. Das hängt damit zusammen, dass Bodenwellen zumeist von allen Rädern einer Achse überfahren werden, während sich ein Schlagloch nur auf die Räder einer Fahrzeugseite auswirkt. Durch diese Ermittlung der Fahrbahneigenschaften können diejenigen Situationen identifiziert werden, welche den Anforderungen für eine korrekte Erkennung eines Reifendruckverlusts genügen. In den Anforderungen genügenden Situationen kann dann aus dem zeitlichen Verlauf der Einfederwege auf den Reifendruck aus vorab gelernten bzw. gemessenen Werten geschlossen werden.Due to irregularities in the road, vertical forces act on the shock absorbers of a vehicle, which manifest themselves in the rebounds of the shock absorbers. The vertical movements of the shock absorbers can be characterized by detection of their compression travel. The compression travel of the respective wheel associated shock absorbers can be detected by a sensor for each wheel and checked for plausibility in a control unit. By evaluating the time course of the compression travel and the type of uneven road surface can be determined. Bumps express, for example, by Einfederwegsschwingungen first the wheels of one axle and shortly thereafter the wheels of the other axle. A pothole manifests itself mostly by Einfederwegsschwingungen only one wheel of an axle and shortly thereafter a Einfederwegsschwingung the wheel on the other axis, but on the same side of the vehicle. This is due to the fact that bumps are usually run over by all the wheels of an axle, while a pothole affects only the wheels of a vehicle side. By determining the road characteristics, those situations can be identified that meet the requirements for correct detection of tire pressure loss. In the situations which are sufficient for the requirements, it is then possible to deduce the tire pressure from previously learned or measured values from the chronological course of the compression travel.
In
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102008003192 A1 [0001]DE 102008003192 A1 [0001]
Claims (9)
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DE102017210477.5A DE102017210477A1 (en) | 2017-06-22 | 2017-06-22 | Method and device for detecting a pressure loss in a tire of a motor vehicle |
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DE102017210477.5A DE102017210477A1 (en) | 2017-06-22 | 2017-06-22 | Method and device for detecting a pressure loss in a tire of a motor vehicle |
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DE102017210477.5A Pending DE102017210477A1 (en) | 2017-06-22 | 2017-06-22 | Method and device for detecting a pressure loss in a tire of a motor vehicle |
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Citations (1)
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DE102008003192A1 (en) | 2008-01-04 | 2009-07-09 | Wabco Gmbh | A method of identifying low pressure tires of vehicle wheels |
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2017
- 2017-06-22 DE DE102017210477.5A patent/DE102017210477A1/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102008003192A1 (en) | 2008-01-04 | 2009-07-09 | Wabco Gmbh | A method of identifying low pressure tires of vehicle wheels |
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