EP1441919A1 - Element de chassis en matiere plastique renforce par des fibres et dote d'un capteur integre - Google Patents

Element de chassis en matiere plastique renforce par des fibres et dote d'un capteur integre

Info

Publication number
EP1441919A1
EP1441919A1 EP02779200A EP02779200A EP1441919A1 EP 1441919 A1 EP1441919 A1 EP 1441919A1 EP 02779200 A EP02779200 A EP 02779200A EP 02779200 A EP02779200 A EP 02779200A EP 1441919 A1 EP1441919 A1 EP 1441919A1
Authority
EP
European Patent Office
Prior art keywords
vehicle
chassis
forces
chassis part
measuring
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Withdrawn
Application number
EP02779200A
Other languages
German (de)
English (en)
Inventor
Jürgen GRÄBER
Jochen Kruse
Joachim Spratte
Stefan Schönhoff
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZF Lemfoerder GmbH
Original Assignee
ZF Lemfoerder GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ZF Lemfoerder GmbH filed Critical ZF Lemfoerder GmbH
Publication of EP1441919A1 publication Critical patent/EP1441919A1/fr
Withdrawn legal-status Critical Current

Links

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
    • B60G17/019—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
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • B60G7/001—Suspension arms, e.g. constructional features
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/366—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers made of fibre-reinforced plastics, i.e. characterised by their special construction from such materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/11—Leaf spring
    • B60G2202/112—Leaf spring longitudinally arranged
    • 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
    • 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
    • B60G2204/116—Sensors coupled to the suspension arm
    • B60G2204/1162—Sensors coupled to the suspension arm directly mounted on the suspension arm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/10—Constructional features of arms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/70—Materials used in suspensions
    • B60G2206/71—Light weight materials
    • B60G2206/7101—Fiber-reinforced plastics [FRP]
    • 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
    • B60G2400/10—Acceleration; Deceleration
    • 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
    • B60G2400/60—Load
    • 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
    • B60G2400/60—Load
    • B60G2400/61—Load distribution
    • 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
    • B60G2400/60—Load
    • B60G2400/64—Wheel forces, e.g. on hub, spindle or bearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2401/00—Indexing codes relating to the type of sensors based on the principle of their operation
    • B60G2401/10—Piezoelectric elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2401/00—Indexing codes relating to the type of sensors based on the principle of their operation
    • B60G2401/14—Photo or light sensitive means, e.g. Infrared
    • B60G2401/144—Fiber optic sensor
    • 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
    • B60G2600/02—Retarders, delaying means, dead zones, threshold values, cut-off frequency, timer interruption
    • 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
    • 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
    • B60G2800/80—Detection or control after a system or component failure
    • 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
    • B60G2800/94—Electronic Stability Program (ESP, i.e. ABS+ASC+EMS)

Definitions

  • the invention relates to chassis parts for connection and Kjraftübeilragung between a vehicle chassis and at least one wheel, consisting of fiber-reinforced plastics or plastic composite systems, preferably for a passenger or commercial vehicle.
  • Vehicle chassis and the wheel, also called the handlebar are generally known. Furthermore, it is known, for example from DE 38 39 855 A1, to produce lightweight components which consist of a connection between metal and plastic structural parts.
  • the problem with such composite materials is that the plastic parts, in particular fiber-reinforced plastic components, can break brittle when subjected to too high a load. This means that parts that are too heavy can suddenly lose their strength and stability. For this reason, it poses a certain safety risk to use composite materials of this kind for chassis drivers, since here, in particular, extremely high safety requirements are imposed, but on the other hand enormous forces can act briefly on the chassis handlebars due to unpredictable driving or accident situations.
  • the inventors have recognized that it is possible to constantly monitor the forces occurring in these chassis parts. To recognize signs of fatigue in good time and thus to be able to guarantee sufficient safety when using composite materials for such chassis parts. Since plastics, with the same strength as metals, have a significantly higher elongation, these materials are particularly suitable for easily and precisely determining the loads that are actually experienced using strain gauges or piezo elements. Since time integration is also possible, material fatigue phenomena can be recorded that are not only generated by peak loads, but also by permanent loads. It has also proven to be particularly advantageous that this not only enables force measurements to be carried out to monitor the service life of these chassis parts, but also that the measured force values can also be used in electronic control devices, preferably for driving and / or position stabilization of vehicles.
  • the inventors therefore propose to improve chassis parts for connecting and transmitting power between a vehicle chassis and at least one wheel, consisting of fiber-reinforced plastics or plastic composite systems, preferably for a passenger or commercial vehicle, in such a way that at least one means for measuring the other Forces engaging undercarriage parts are integrated into the plastic parts of the undercarriage parts.
  • chassis parts represent lever structures that are jerked or jerked, particularly when they are so-called handlebars, also subjected to greater loads and accelerated than the other vehicle. These accelerations can be measured with an acceleration sensor. You go now assume that certain accelerations, over a certain time, describe a distance covered, so one can conclude that the driver has been abused, e.g. B. a quick ride over a curb. Although this is not a direct force measurement, it is sufficient to identify misuse conditions.
  • strain gauges or piezo elements can be mentioned particularly advantageously here, by means of which the forces occurring on the chassis parts can be determined electronically.
  • a special embodiment of the chassis parts according to the invention is that the means for measuring the acting forces are arranged in such a way that they can register forces in at least 2, preferably 3, independent axes. This makes it possible to define the acting forces either in one plane or even spatially.
  • Another way of measuring the load on a force connection strut can be to embed a light guide in a plastic, and as soon as it is bent under load, the permeability changes in individual modes.
  • the bending stress in the handlebar can thus be inferred from the measurement of frequency band shifts or the extinction of individual modes.
  • the inventors also propose a vehicle with the above-mentioned chassis parts, at least one means for measuring the acting forces being coupled to an electronic control device for driving and / or position stabilization of the vehicle, in particular by acting on driving or braking elements is.
  • control devices can be, for example, the known ESP (Electronic Stability Program) or a simple headlight range adjustment of the vehicle headlights.
  • a vehicle according to the invention can also be designed such that at least one means for measuring the acting forces is coupled to an electronic documentation device for the measured forces.
  • an electronic documentation device which can consist, for example, of a simple electronic memory in which the measured values are stored electronically, it is now possible to recognize loads that have occurred subsequently.
  • an evaluation of the measured values for example with regard to the maximum values read out, or also a more complex calculation of an integrated load and thus the still existing life expectancy takes place in the electronic documentation device.
  • This can possibly also be done in combination with a temperature sensor, since there are also dependencies between the strength of the respective undercarriage part and the current body temperature of the undercarriage part, which should be particularly taken into account when using plastics. With regard to their resilience, plastics are much more dependent on their temperature than metals.
  • the electronic documentation device is integrated in the electronic control device for driving and / or position stabilization of the vehicle. This results in the possibility of only having to calculate the currently occurring forces eimnal and at the same time to use the life expectancy on the one hand and on the other hand for the driving and / or position stabilization of the vehicle.
  • the inventors furthermore propose that the documentation device also include means for blocking the Vehicle when the above-mentioned preset maximum loads or the maximum life of an essential chassis part is exceeded.
  • handlebars Due to the equipment of chassis parts according to the invention, it is now possible to also manufacture safety-relevant handlebars from fiber-reinforced plastics and to use them without a safety risk. If the handlebars are manufactured using an injection molding process or RTM-like process (RTM - Resin Transfer Molding), the integration of prefabricated sensors as an insert is very easy to accomplish. Handlebars made of other materials or material composite systems that have a high local elongation due to their construction are also suitable. Here you can easily
  • Way sensors are integrated into the handlebars at suitable points, for example with high local loads.
  • the sensors can perform two functions, namely they can be used to continuously measure the forces and thus to provide the data for electronic chassis control, and on the other hand they can be used for monitoring to indicate whether overloads are occurring that could damage the driver himself.
  • the method presented thus provides the information that enables diagnosis of the condition of the undercarriage.
  • diagnosis can be useful after accidents have occurred in which, for example, no visible damage to chassis parts can be seen, but based on the measured forces it can be assumed that structural damage must have occurred inside such parts.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Automotive Seat Belt Assembly (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

L'invention concerne un élément de châssis destiné à la liaison et à la transmission de force entre un châssis de véhicule et au moins une roue. Cet élément est réalisé en matière plastique renforcé de fibres ou de systèmes composites de matières plastiques et est destiné, de préférence, à un véhicule automobile ou un véhicule utilitaire. L'invention est caractérisée en ce qu'au moins un moyen de mesure des forces appliquées sur les éléments de châssis est intégré aux fractions plastiques de des éléments de châssis.
EP02779200A 2001-11-06 2002-11-06 Element de chassis en matiere plastique renforce par des fibres et dote d'un capteur integre Withdrawn EP1441919A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10153970 2001-11-06
DE10153970A DE10153970A1 (de) 2001-11-06 2001-11-06 Fahrwerksteil
PCT/DE2002/004121 WO2003039894A1 (fr) 2001-11-06 2002-11-06 Element de chassis en matiere plastique renforce par des fibres et dote d'un capteur integre

Publications (1)

Publication Number Publication Date
EP1441919A1 true EP1441919A1 (fr) 2004-08-04

Family

ID=7704465

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02779200A Withdrawn EP1441919A1 (fr) 2001-11-06 2002-11-06 Element de chassis en matiere plastique renforce par des fibres et dote d'un capteur integre

Country Status (5)

Country Link
US (1) US7083199B2 (fr)
EP (1) EP1441919A1 (fr)
JP (1) JP2005508008A (fr)
DE (1) DE10153970A1 (fr)
WO (1) WO2003039894A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8481900B2 (en) 2009-11-25 2013-07-09 Corning Incorporated Methods for drying ceramic materials

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DE10350974B4 (de) * 2003-10-30 2014-07-17 Hottinger Baldwin Messtechnik Gmbh Aufnehmerelement, Vorrichtung zur Feststellung von Belastungen an Faserverbundwerkstoffbauteilen und Herstellungsverfahren für die Vorrichtung
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IT201700083402A1 (it) 2017-07-21 2019-01-21 Ari Automotive Res Innovation S A S Di Francesca Bianco & C Sospensione provvista di dispositivo reattivo ai carichi.
DE102018202307A1 (de) 2018-02-15 2019-08-22 Ford Global Technologies, Llc Lenker für eine Radaufhängung
DE102018213513B4 (de) 2018-08-10 2024-03-21 Zf Friedrichshafen Ag Fahrwerkbauteil, Verfahren zur Herstellung eines Fahrwerkbauteils sowie Radaufhängung für ein Kraftfahrzeug
DE102018216061A1 (de) 2018-09-20 2020-03-26 Zf Friedrichshafen Ag Fahrwerkbauteil, Verfahren zur Herstellung eines Fahrwerkbauteils sowie Radaufhängung
DE102020201199A1 (de) 2020-01-31 2021-08-05 Zf Friedrichshafen Ag Fahrwerkbauteil für ein Kraftfahrzeug
DE102020201201A1 (de) 2020-01-31 2021-08-05 Zf Friedrichshafen Ag Fahrwerkbauteil für ein Kraftfahrzeug

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Publication number Priority date Publication date Assignee Title
US8481900B2 (en) 2009-11-25 2013-07-09 Corning Incorporated Methods for drying ceramic materials

Also Published As

Publication number Publication date
WO2003039894A1 (fr) 2003-05-15
US20040046380A1 (en) 2004-03-11
US7083199B2 (en) 2006-08-01
DE10153970A1 (de) 2003-05-22
JP2005508008A (ja) 2005-03-24

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