WO2024081988A1 - Dispositif de mesure d'émissions de frein - Google Patents

Dispositif de mesure d'émissions de frein Download PDF

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Publication number
WO2024081988A1
WO2024081988A1 PCT/AT2023/060361 AT2023060361W WO2024081988A1 WO 2024081988 A1 WO2024081988 A1 WO 2024081988A1 AT 2023060361 W AT2023060361 W AT 2023060361W WO 2024081988 A1 WO2024081988 A1 WO 2024081988A1
Authority
WO
WIPO (PCT)
Prior art keywords
perforated plate
brake
area
housing
emissions
Prior art date
Application number
PCT/AT2023/060361
Other languages
German (de)
English (en)
Inventor
Herbert REINGRUBER
Manfred Adelmann
Martin Augustin
Original Assignee
Avl List 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 Avl List Gmbh filed Critical Avl List Gmbh
Publication of WO2024081988A1 publication Critical patent/WO2024081988A1/fr

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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
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/28—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for testing brakes
    • 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
    • B60T17/002—Air treatment devices
    • B60T17/004—Draining and drying 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
    • B60T5/00—Vehicle modifications to facilitate cooling of brakes
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/0031—Devices for retaining friction material debris, e.g. dust collectors or filters
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
    • F16D66/02—Apparatus for indicating wear
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/56—Investigating resistance to wear or abrasion
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
    • F16D69/04—Attachment of linings
    • F16D2069/0425—Attachment methods or devices
    • F16D2069/0491—Tools, machines, processes

Definitions

  • the present invention relates to a device for measuring brake emissions with a housing for accommodating a test object, in particular a brake arrangement.
  • the housing has a funnel-shaped supply area, via which cooling air for cooling the test object and for detecting the brake emissions can be introduced into the housing from an air supply duct through an inlet opening. The brake emissions can then be passed from the housing through an outlet opening into an exhaust air duct and to a measuring system.
  • brake test benches are often used on which the brake system is built and subjected to dynamic tests.
  • brake test benches are often extended in order to be able to record and measure the brake emissions - i.e. the brake abrasion.
  • WO 2017/097901 A1 shows a device for detecting and measuring brake dust particles, which has been integrated into a brake test bench.
  • WO 2018/202421 A1 also discloses a device for detecting and measuring brake dust, which is integrated into a brake test bench.
  • the brake as a test object is arranged in an enclosed brake receiving space.
  • An air flow is guided through the brake receiving space or its housing by means of a blower system, with an air supply duct and an exhaust duct of the blower system being coupled to the brake receiving space.
  • the brake receiving space to which the brake is attached is positioned so that the brake is arranged between an outlet opening of the air supply duct and a funnel-shaped inlet opening of the exhaust duct.
  • the cross sections of the air supply and exhaust ducts are designed to be large enough so that the air flow fully covers the brake and feeds the brake emissions to the extraction device or the particle measuring device through the inlet opening of the exhaust duct.
  • current-carrying elements can also be arranged in the air supply duct.
  • Such flow guide elements or flow straighteners have long been known for converting a flow into a flow with a known flow profile or for directing it accordingly.
  • DE 10 2014 111 585 A1 shows a test bench with a cooling gas inflow device in which at least one flow straightener is arranged in a straight section of the supply line for a uniform cooling gas flow in a supply line via which the cooling gas flow is directed to the test object.
  • This flow straightener is constructed, for example, from a grid of cooling gas baffles arranged parallel to the straight section and is arranged at a predetermined distance from the outlet opening of the supply line.
  • the cooling gas inflow device also has equidistantly arranged cooling gas deflection plates, e.g.
  • the invention is therefore based on the object of specifying a device for measuring brake emissions, in which, in the case of an arbitrarily shaped, in particular funnel-shaped, supply line area, a cooling air flow is uniformly guided over a test object using very simple means and the brake emissions to be measured are reliably recorded.
  • the object is achieved by a device for measuring brake emissions, which has a housing for receiving a test object, in particular a brake arrangement.
  • the housing has a funnel-shaped supply area, via which cooling air from an air supply duct can be introduced into the housing through an inlet opening in order to cool the test object and to record the brake emissions.
  • the brake emissions can then be guided together with cooling air from the housing through an outlet opening into an exhaust air duct and further to a measuring system.
  • at least one perforated plate for flow rectification of the cooling air introduced into the housing is arranged at a perforated plate position, wherein the perforated plate position for attaching the at least one perforated plate in the supply area - i.e. between the inlet opening and an opening to a central receiving area for receiving the test object - can be selected as desired.
  • the main aspect of the proposed solution is that a flow rectification effect is achieved in a simple manner by having at least one perforated plate arranged arbitrarily in the supply area.
  • This also ensures that the brake emissions in the test object's receiving area are effectively recorded so that the brake emissions are then passed on together with the cooling air via the outlet opening in the housing and the exhaust air duct to the measuring system for evaluation.
  • Elaborate and complex designed or shaped structures made of, for example, several flow plates in the supply area are no longer necessary to achieve the desired flow of cooling air.
  • a diameter of the at least one perforated plate is adapted to a cross-section of the funnel-shaped supply area at the selected perforated plate position. This makes it easy to define an opening area through which the cooling air can flow through the perforated plate - ie a number of holes, an arrangement of the holes, a hole diameter, a hole size, etc. or a hole pattern of the perforated plate.
  • the at least one perforated plate can, for example, have many holes with a small diameter. diameter or fewer holes with a larger diameter.
  • the at least one perforated sheet can have a hole pattern with holes arranged in rows or holes arranged in offset rows, the distances between the rows of holes and/or the hole diameters of the holes being constant.
  • each row of holes has, for example, holes with the same hole diameter which are arranged at the same distance.
  • the distances and/or hole diameters of the rows of holes are designed differently.
  • the distances between holes in the middle of the perforated sheet can increase and/or a hole diameter can decrease, while towards the edge the distances between the holes decrease and/or the hole diameters increase.
  • the distances between holes in the middle of the perforated sheet can decrease and/or a hole diameter can increase, while towards the edge the distances between the holes increase and/or the hole diameters decrease. In this way, a gradient can be easily applied in the hole pattern in order to direct the flow of cooling air specifically onto the test object and for the detection of brake emissions.
  • an arrangement of the holes in the form of concentric circles as a hole pattern of at least one perforated sheet is also conceivable. It is also conceivable that the circularly arranged hole circles have the same design - i.e. have holes with the same diameter - and are arranged at a constant distance from one another in the perforated sheet. It would also be possible to design the hole pattern in such a way that, for example, the distances between the holes and/or the hole diameters of the holes in the individual hole circles change with a distance from a central axis of the concentrically arranged hole circles.
  • the distances between holes in the middle of the perforated sheet can increase and/or a hole diameter can decrease, while towards the edge the distances between the holes decrease and/or the hole diameters increase.
  • the distances between holes in the middle of the perforated sheet decrease and/or a hole diameter increases, while towards the edge the distances between the holes increase and/or the hole diameters decrease.
  • a practical design of the device for measuring brake emissions provides that in addition to the at least one perforated plate, another perforated plate for the flow rectification of the cooling air is arranged in the funnel-shaped supply line area.
  • the at least one perforated plate and the other perforated plate can then be arranged at any perforated plate position in the supply line area - ie between the inlet opening and an opening to a central receiving area for receiving the test object. It is also possible to arrange at least three or more perforated plates at any perforated plate position in the funnel-shaped supply line area. area of the housing.
  • These two, three or more perforated plates can differ in terms of their respective hole pattern (e.g. number of holes, hole diameter, hole pattern, etc.) as long as an equal flow-through opening area is ensured in each case.
  • this perforated plate is expediently designed in such a way that, regardless of the selected perforated plate position at which the perforated plate is arranged in the funnel-shaped supply area, a ratio between a flow-through opening area of the perforated plate and a cross-sectional area of the supply area at the selected perforated plate position has a constant value. This means that no matter at which position in the supply area the at least one perforated plate is arranged, the ratio between the flow-through opening area of the perforated plate and the cross-sectional area of the supply area at the perforated plate position of the perforated plate is always the same.
  • the housing of the device for measuring brake emissions is hermetically sealed. This means that the housing is sealed against the environment so that only cooling air can be introduced into the housing via the supply air duct, whereby the cooling air is filtered and conditioned accordingly (with a predefined temperature, humidity, etc.).
  • the device for measuring brake emissions can be combined with a dynamic brake test bench or integrated into a dynamic brake test bench. This means that testing of brake arrangements on the brake test bench can be very easily and efficiently combined with measuring and evaluating brake emissions.
  • Fig.1 shows an embodiment of a device according to the invention for measuring brake emissions with a housing for accommodating a test object and a funnel-shaped supply area and at least one perforated plate
  • Fig. 2 shows another embodiment of the device according to the invention for measuring brake emissions with two perforated plates
  • Fig. 3 shows a further embodiment of the device according to the invention for measuring brake emissions with three perforated plates
  • Figure 1 shows an example and schematically a device 1 for measuring brake emissions BE, which can be combined with a dynamic brake test bench or integrated into a dynamic brake test bench.
  • the embodiment shown in Figure 1 is limited to that part of the device 1 for measuring brake emissions BE in which a test object 2, in particular a brake arrangement 2, is mounted during a brake emission test or in which the brake emissions BE - i.e. abrasion on brake discs and brake pads of the test object 2 - is recorded by means of supplied cooling air KL during the brake emission test.
  • An air conditioning system in which, for example, temperature, humidity, flow, etc. of the cooling air KL are monitored and regulated, filter units for cleaning the cooling air KL and a measuring system for measuring and evaluating the brake emissions BE (e.g. brake dust particle concentration, brake dust particle sizes, etc.) are not shown in Figure 1.
  • the device 1 for measuring brake emissions BE has a housing 3 in which a test object 2 or a brake arrangement 2 to be tested is mounted during the brake emission test.
  • the housing 3 is ideally hermetically sealed to prevent untreated air from penetrating and contaminating the cooling air KL flowing around the test object 2.
  • the housing 3 is designed in such a way that the conditioned and air-conditioned cooling air KL supplied via an air supply duct 4 is evenly directed around the test object 2 or the brake arrangement 2.
  • the brake arrangement 2 is thereby cooled by the cooling air KL.
  • brake emissions BE - in particular brake dust particles which arise during the brake emission test - are recorded by the cooling air KL and passed on to the measuring system via an exhaust air duct 5.
  • the housing 3 has a central receiving area 6 in which the test object 2 or the brake arrangement 2 is mounted for the brake emission test.
  • the test object 2 can be arranged, for example, on a mounting device (not shown), which supports the test object 2 and its components (e.g. brake discs, brake callipers with brake pads, any brake filter devices present, etc.) and ensures stable support of the braking torques during the test.
  • the central receiving area 6 is ideally designed and dimensioned in such a way that brake arrangements 2 of different sizes can be mounted for a test.
  • the size or dimensioning as well as the design of the central receiving area 6 are predetermined by the largest brake arrangement 2 to be tested in the device 1.
  • the central receiving area 6 can, for example - as shown by way of example in Figure 1 - be designed to be approximately cylindrical or to match the shape of the test object 2, with the test object 2 being mounted in the center of the receiving area 6.
  • the housing 3 has a supply area 7 and a discharge area 8, which are arranged on both sides of the central receiving area 6.
  • the supply area 7 extends from an inlet opening 9, via which the housing 2 is connected to the supply air duct 4, to an opening 10 to the central receiving area 6.
  • the discharge area 8 extends from an opening 11 to an outlet opening 12, via which the housing 3 is connected to the exhaust air duct 5.
  • the cooling air KL from the conditioning system is guided via the supply air duct 4 through the inlet opening 9 into the housing 3 or into the supply area 7.
  • the cooling air KL flows through the supply area 7 via the opening 10 to the central receiving area 6 and thus to the test object 2.
  • the cooling air KL mixed with the brake emissions BE is led via the opening 11 of the central exception area 6 into the discharge area 8. From there, the cooling air KL mixed with the brake emissions BE is passed on through the outlet opening 12 into the exhaust air duct 5 and further to a removal position for the measuring system.
  • the supply area 7 and the discharge area 8 are designed, for example, to be conical or trapezoidal.
  • a diameter of the inlet opening 6, which also corresponds to the diameter of the supply air duct 4, is smaller than a diameter of the opening 10 to the central receiving area 6, as a result of which the supply area 7 has the shape of a funnel or is designed in a funnel shape.
  • the funnel shape of the supply area 7 is designed such that a transition from the inlet opening 6 to the opening 10 or to the central receiving area 6 is smooth and continuous - i.e. without abrupt changes in cross-sections in the course of the supply area 7.
  • the inlet opening 6 can be dimensioned such that a smooth transition angle (e.g. from 15° to 30°) in the direction of the opening 10 to the central receiving area 6 is ensured.
  • the discharge area 8 can also be designed conically or trapezoidally, whereby the diameter of the outlet opening 12, which also corresponds to the diameter of the exhaust air duct 5, is smaller than the opening 11 of the central receiving area 6 to the discharge area 8.
  • the discharge area 8 also has a funnel shape, which can be designed analogously to the supply area 7 without abrupt changes in cross-sections in the course of the discharge area 8.
  • the outlet opening 12 is dimensioned in such a way that a smooth transition angle (eg 15° to 30°) in the direction of the opening 11 to the central receiving area 6 is ensured.
  • the housing 3 is designed symmetrically to a horizontal axis A and to a vertical axis B of the housing 3, with the two axes A and B intersecting in the center of the central receiving area 6.
  • the funnel shape of the supply area 7 and the discharge area 8 is identical, with the supply area 7 and the discharge area 8 intersecting the, for example, cylindrically designed central receiving area 6 in the respective opening 10, 11.
  • the housing 3 is ideally aligned so that the cooling air only enters and exits in a horizontal direction - i.e. in the direction of the horizontal axis A of the housing 3.
  • At least one perforated plate 13 is arranged at at least one perforated plate position P in the supply area 7.
  • the perforated plate 13 serves to straighten the flow of the cooling air KL introduced into the housing 7 via the inlet opening 9.
  • the perforated plate position P of the at least one perforated plate 13 in the supply area 7 can be selected arbitrarily.
  • At least one of the predetermined perforated plate positions P1, P2, P3 can be selected for attaching the at least one perforated plate 13 in the supply area 7.
  • the at least one perforated plate 13 can be attached - for example as shown in Figure 1 - at any perforated plate position P, which can be in the area of the inlet opening 9 of the supply area 7 up to the area of the opening 10 to the central receiving area 6.
  • any perforated plate position P can be selected as the perforated plate position P for the at least one perforated plate 13.
  • the at least one perforated plate 13 can be provided with a filter mat 16 in order, for example, to additionally filter the cooling air KL and to reinforce a flow-influencing effect.
  • the at least one perforated plate 13 is adapted with its diameter to a respective cross-section of the supply area 7 at the respectively selected perforated plate position P. This means that the at least one perforated plate 13 has a larger diameter the closer it is arranged to the opening 10 to the central receiving area 6.
  • the at least one perforated plate 13 has the largest diameter at a selected perforated plate position P in the area of the opening 10 to the central receiving area 6.
  • the perforated plate 13 has the smallest diameter at a selected perforated plate position P in the area of the inlet opening 9.
  • the opening area through which the cooling air KL can flow can thereby be defined by the at least one perforated plate 13 - in particular by a number of holes, an arrangement of the holes, a hole diameter, a hole size, etc. or by a hole pattern of the perforated plate 13.
  • the at least one perforated plate 13 can, for example, have a larger number of holes with a smaller diameter or smaller hole size.
  • the at least one perforated plate 13 can, for example, have a larger number of holes with a smaller diameter or smaller hole size.
  • only a smaller number of holes with a larger diameter or larger hole size can be provided in the at least one perforated plate 13.
  • the at least one perforated sheet 13 can have holes arranged in rows, for example, as shown by way of example in Figures 4a and 4b.
  • the rows of holes can be offset from one another, for example, as shown in Figure 4b.
  • the holes in the perforated sheet 13 are arranged in the form of concentric circles, as shown by way of example in Figures 4c and 4d.
  • the distances between the rows of holes/circles can be a constant distance and all holes can have the same diameter or the same size.
  • the at least one perforated plate 13 may be designed in such a way that the distances between the rows of holes or hole circles and/or the hole diameters or sizes change depending on the row of holes or hole circle, for example with a distance to the center of the at least one perforated plate 13 or to the edges of the at least one perforated plate 13 (e.g. a larger distance between the holes and/or smaller holes in a central region of the perforated plate 13 and a smaller distance between the holes and/or larger holes in the edge regions of the perforated plate 13 or vice versa - i.e.
  • FIGS. 4c and 4d show exemplary embodiments for circularly arranged holes.
  • the perforated plate 13 can be adapted in its design to the respectively selected perforated plate position P in the supply area 7.
  • the perforated plate 13 can be designed, for example, such that a ratio of the opening area of the at least one perforated plate 13 through which the cooling air KL flows and a cross-sectional area of the funnel-shaped supply area 7 has a constant value. The ratio is thus independent of the respectively selected perforated plate position P at which the Perforated plate 13 is always the same in the supply line area 7.
  • further perforated plates 13 can be arranged - staggered - in the supply line area 7 in order to guide the cooling air KL evenly over the test object 2.
  • the further perforated plates 13 can be provided at any perforated plate positions P in the supply line area 7.
  • the individual perforated plates 13 arranged in the supply line area 7 can differ in terms of their hole pattern - i.e. in the number of holes, arrangement of the holes, hole pattern, hole diameter used and/or hole sizes, etc. - as long as the same flow-through opening area is ensured by the respective hole pattern.
  • all or only some of the perforated plates 13 attached can be provided with filter mats 16.
  • Figures 2 and 3 show embodiments of the device 1 for measuring brake emissions BE, in which, for example, in addition to the at least one perforated plate 13, another perforated plate 14 or a third perforated plate 15 is provided in the supply line area 7.
  • the embodiments shown as examples in Figures 2 and 3 do not, however, represent a restriction to two or three perforated plates 13, 14, 15, but are only to be seen as examples of an arrangement of more than one perforated plate 13 in the supply line area 7.
  • more than three perforated plates 13, 14, 15 can also be arranged in the supply line area 7 if appropriate.
  • Figure 2 again shows the partial area of the device 1 for measuring brake emissions BE in which the test object 2 or brake arrangement 2 is mounted during a brake emission test. That is, the housing 3 with the central receiving area 6 for receiving the test object 2, the funnel-shaped supply area 7 and the funnel-shaped discharge area 8.
  • a further, second perforated plate 14 is provided in the funnel-shaped supply area 7.
  • the first perforated plate 13 is arranged at the first perforated plate position P1.
  • the further, second perforated plate 14 is, for example, mounted at the second perforated plate position P2.
  • Both the first perforated plate position P1 and the second perforated plate position P2 in the supply area 7 can be selected as desired.
  • the first perforated plate 13 is, for example, closer to the opening 10 to the central receiving area 6 than the second perforated plate. plate 14.
  • the first perforated plate 13 has, for example, a larger diameter than the second perforated plate 14, since both perforated plates 13, 14 are adapted to a respective cross-section of the supply area 7 at the respectively selected perforated plate position P1, P2.
  • a filter mat 16 can be provided on both perforated plates 13, 14 or (as shown by way of example in Figure 2) only on one of the two perforated plates 13, 14.
  • both perforated plates 13, 14 can differ in their hole pattern - that is, in the number of holes, arrangement of the holes, hole pattern, hole diameter used and/or hole sizes, etc. - as long as an identical flow-through opening area is ensured by the respective hole pattern.
  • Figure 3 shows an embodiment of the device 1 for measuring brake emissions BE, in which a third perforated plate 15 is arranged in the supply area 7 in addition to a first perforated plate 13 and a further, second perforated plate 14.
  • Figure 3 again shows the partial area of the device 1 for measuring brake emissions BE in which the test object 2 or brake arrangement 2 is mounted during a brake emissions test.
  • the first perforated plate 13 is arranged at the first perforated plate position P1.
  • the second perforated plate 14 is arranged at the second perforated plate position P2 and the third perforated plate 15 at a third perforated plate position P3. Any position in the supply area 7 can be selected for each of the three hole positions P1, P2, P3.
  • the first perforated plate 13 is arranged closer to the opening 10 to the central receiving area 6 than the second perforated plate 14 and the third perforated plate 15. Furthermore, the selected third perforated plate position P3 of the third perforated plate 15 is, for example, closer to the inlet opening 9 than the first perforated plate position P1 of the first perforated plate 13 and the second perforated plate position P2 of the second perforated plate 14.
  • the diameters of the perforated plates 13, 14, 15 are again adapted to the cross-section of the supply area 7 at the respective perforated plate position P1, P2, P3, for example the diameter of the first perforated plate 13 at the first perforated plate position P1 is larger than the diameter of the second perforated plate 14 at the second perforated plate position P2, which in turn is larger than the diameter of the third perforated plate 15 at the third perforated plate position P3.
  • all three perforated plates 13, 14, 15 or only individual ones of the perforated plates 13, 14, 15 can be provided with filter mats 16 for filtering the cooling air KL and for reinforcing the flow-influencing effect or the flow rectification.
  • the three perforated plates 13, 14, 15 can differ in the hole pattern - that is, in the number of holes, arrangement of the holes, hole pattern, hole diameter used and/or hole sizes, etc. - as long as an equal flow-through opening area is ensured by the respective hole pattern.
  • Figures 4a to 4d show exemplary embodiments of the at least one perforated plate 13 or of the possible further perforated plates 14, 15.
  • Figures 4a to 4d show exemplary possible, different hole patterns that the at least one perforated plate 13 can have.
  • a row-shaped arrangement of the holes is shown as a hole pattern of the at least one perforated plate 13, wherein the holes have the same hole size and a constant distance between the rows of holes.
  • the holes of the rows of holes are arranged next to or below one another in both a horizontal and a vertical direction.
  • Figure 4b shows a hole pattern with rows of holes offset from one another, wherein the holes also have the same hole size and the rows of holes have a constant distance.
  • every second row of holes is offset from a previous or subsequent row of holes.
  • a hole in a row of holes is, for example, below the distance between two holes in a previous or subsequent row of holes in the vertical direction.
  • the hole size of the individual rows of holes and/or a distance between the rows of holes varies in the embodiments shown in Figures 4a and 4b.
  • Figures 4c and 4d show further possible embodiments of the at least one perforated plate 13 or the associated hole pattern.
  • the holes in the perforated plate 13 are arranged in the form of concentric circles. Even when the holes are arranged in concentric circles, the distances between the rows of holes/circles can be a constant distance and all holes can have the same diameter or the same size.
  • the at least one perforated plate 13 it is also possible for the at least one perforated plate 13 to be designed in such a way that the distances between the hole circles change - e.g. as shown in Figure 4c with a distance to the center of the at least one perforated plate 13 becoming larger. Alternatively, the distances could also become larger towards the edges of the at least one perforated plate 13.
  • the hole size of the individual hole circles can also change (e.g. smaller holes in a central area of the perforated plate 13 and larger holes in the edge areas of the perforated plate 13 or vice versa). Furthermore, it is also conceivable that - for example as shown in Figure 4d - a hole size changes in addition to the distance between the hole circles in order to apply a gradient through the hole pattern of the at least one perforated plate 13, which additionally directs the flow of the cooling air KL in a desired direction.

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  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
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Abstract

L'invention se rapporte à un dispositif (1) destiné à mesurer des émissions de frein (BE), présentant un boîtier (3) destiné à recevoir un objet test (2), en particulier un agencement de frein (2). Le boîtier (3) présente une région d'alimentation en forme d'entonnoir (7), à travers laquelle de l'air de refroidissement (KL) destiné à refroidir l'objet test (2) et à détecter les émissions de frein (BE) peut être introduit dans le boîtier (3) à partir d'un canal d'air d'alimentation (4) à travers une ouverture d'entrée (9). Les émissions de frein (BE) peuvent ensuite être transportées hors du boîtier (3) à travers une ouverture de sortie (12) dans un canal d'air d'échappement (5) et vers un système de mesure. Au moins une plaque perforée (13) est agencée dans la région d'alimentation en forme d'entonnoir (7) au niveau d'une position de plaque perforée (P) pour aligner l'écoulement de l'air de refroidissement (KL) introduit dans le boîtier (3). La position de plaque perforée (P) destinée à fixer l'au moins une plaque perforée dans la région d'alimentation (7) entre l'ouverture d'entrée (9) et une ouverture (10) sur une région de réception centrale (6) pour l'objet test (2) peut être sélectionnée comme souhaité.
PCT/AT2023/060361 2022-10-21 2023-10-19 Dispositif de mesure d'émissions de frein WO2024081988A1 (fr)

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ATA50819/2022 2022-10-21
ATA50819/2022A AT526050B1 (de) 2022-10-21 2022-10-21 Vorrichtung zum Messen von Bremsemissionen

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Citations (6)

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FR2815099A1 (fr) * 2000-10-10 2002-04-12 Peugeot Citroen Automobiles Sa Frein a disque sans poussiere
DE102014111585A1 (de) 2014-08-13 2016-02-18 Horiba Europe Gmbh Prüfstand mit einer Kühlgaszuströmvorrichtung
WO2017097901A1 (fr) 2015-12-09 2017-06-15 Horiba Europe Gmbh Dispositif pour détecter et mesurer la poussière de frein
WO2018202421A1 (fr) 2017-05-02 2018-11-08 Horiba Europe Gmbh Dispositif pour détecter et mesurer la poussière de frein
FR3100506A1 (fr) * 2019-09-09 2021-03-12 Psa Automobiles Sa Installation de mesure de particules générées par un dispositif de freinage pendant des freinages
AT525993A4 (de) * 2022-08-11 2023-10-15 Avl List Gmbh Verfahren und Messanordnung zur Bestimmung eines Kennwertes eines Bremsabriebs

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Publication number Priority date Publication date Assignee Title
DE102017200941B4 (de) * 2017-01-20 2019-05-16 Ford Global Technologies, Llc Vorrichtung und Verfahren zur Messung von Bremspartikelemissionen
US11543331B2 (en) * 2018-05-22 2023-01-03 Horiba, Ltd. Brake dust measurement system and brake dust measurement method
FR3093779B1 (fr) * 2019-03-11 2021-03-05 Sogefi Filtration Spa Dispositif de séparation et utilisation du dispositif pour séparer et collecter les poussières de freinage

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2815099A1 (fr) * 2000-10-10 2002-04-12 Peugeot Citroen Automobiles Sa Frein a disque sans poussiere
DE102014111585A1 (de) 2014-08-13 2016-02-18 Horiba Europe Gmbh Prüfstand mit einer Kühlgaszuströmvorrichtung
WO2017097901A1 (fr) 2015-12-09 2017-06-15 Horiba Europe Gmbh Dispositif pour détecter et mesurer la poussière de frein
WO2018202421A1 (fr) 2017-05-02 2018-11-08 Horiba Europe Gmbh Dispositif pour détecter et mesurer la poussière de frein
FR3100506A1 (fr) * 2019-09-09 2021-03-12 Psa Automobiles Sa Installation de mesure de particules générées par un dispositif de freinage pendant des freinages
AT525993A4 (de) * 2022-08-11 2023-10-15 Avl List Gmbh Verfahren und Messanordnung zur Bestimmung eines Kennwertes eines Bremsabriebs

Non-Patent Citations (1)

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Title
SCHRIFT KUKUTSCHOVÄ J. ET AL.: "On airborne nanolmicro-sized wear particles released from low-metallic automotive brakes", ENVIRONMENTAL POLLUTION, vol. 159, 2011, pages 998 - 1006, XP028361882, DOI: 10.1016/j.envpol.2010.11.036

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