WO2023110264A1 - Système de filtre dans un véhicule - Google Patents

Système de filtre dans un véhicule Download PDF

Info

Publication number
WO2023110264A1
WO2023110264A1 PCT/EP2022/082034 EP2022082034W WO2023110264A1 WO 2023110264 A1 WO2023110264 A1 WO 2023110264A1 EP 2022082034 W EP2022082034 W EP 2022082034W WO 2023110264 A1 WO2023110264 A1 WO 2023110264A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
intake air
brake
intake
switch member
Prior art date
Application number
PCT/EP2022/082034
Other languages
English (en)
Inventor
Thomas Jessberger
Lukas Bock
Claus-Peter Riedel
Original Assignee
Mann+Hummel 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 Mann+Hummel Gmbh filed Critical Mann+Hummel Gmbh
Publication of WO2023110264A1 publication Critical patent/WO2023110264A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts

Definitions

  • the invention relates to a filter system in a vehicle for filtration of the intake air to be supplied to an internal combustion engine and/or fuel-cell and for filtration of a brake air flow with abrasion particles of the vehicle brake.
  • WO 2008/049829 A1 discloses a filter system in a vehicle for common filtration of the intake air for an internal combustion engine as well as a brake air flow with abrasion particles of the vehicle brake.
  • the filter system comprises an intake air filter with a filter housing and a filter medium body in the filter housing, wherein an intake line for intake air opens into the raw side of the intake air filter, and the clean side of the intake air filter is connected in fluid communication to the air inlet of the internal combustion engine.
  • the filter system comprises in addition a brake dust filter for absorbing brake dust which is also connected in fluid communication to the raw side of the intake air filter.
  • the filter medium body of the intake air filter separates particles from the intake air as well as abrasion particles from the brake air flow.
  • the filter system according to the invention can be used in vehicles, in particular in motor vehicles, for absorbing dust and particles which are entrained, on the one hand, in the intake air for an internal combustion engine or fuel cell of the vehicle and, on the other hand, are produced upon actuation of the vehicle brake by friction between brake disc and brake pad.
  • the filter system combines thus in a common system two different separation functions.
  • the filter system comprises an intake air filter which comprises an air filter housing and a filter medium body in the air filter housing, wherein an intake line for intake air from the environment opens into the raw side of the intake air filter, and the clean side of the intake air filter is connected in fluid communication to an air inlet of an internal combustion engine or fuel cell of the vehicle.
  • the filter system comprises in addition an intake socket arranged close to a wheel for receiving brake dust, wherein the flow path of the brake dust is guided from the intake socket to the raw side of the intake air filter.
  • “Close to a wheel” refers to an arrangement in the immediate region of a wheel of the vehicle, in particular an arrangement in the immediate environment of a brake system, in particular disc brake system.
  • a filter medium body of the intake air filter already present within the vehicle can thus be used for brake dust filtration which represents a solution optimized with respect to installation space because a separate brake dust filter element must not necessarily be provided.
  • the intake air filter can be in particular a motor air filter or a cathode air filter.
  • a switch member for adjusting the intake air supply is arranged in the intake line for intake air from the environment.
  • the switch member is adjustable between a closed position and an open position, wherein the intake air flow is minimized or completely interrupted in the closed position and the intake airflow is at maximum in the open position.
  • the adjustment of the switch member is realized preferably electrically or pneumatically.
  • the switch member can also be arranged as a separate unit inside or outside of an air filter housing.
  • the switch member is arranged at the raw side of the intake air filter because, only in this manner, the vacuum acting on the intake socket is adjustable by an adjustment of the switch member.
  • the switch member can be adjusted into the closed position, into the open position, or into an intermediate position between closed and open positions so that, depending on the operating state, an optimal position for regulating the respective flows to the raw side of the filter medium body can be adjusted. It is in particular possible to adjust, in operating states with reduced intake air demand, the switch member into the closed position so that no or only a reduced intake air flow is guided into the air filter housing to the raw side of the filter medium body and, at the same time, an increased brake air flow is generated by means of which brake dust is sucked in. In operating states with increased intake air demand, the switch member can be opened wider, optionally up to the maximal open position.
  • the switch member is preferably embodied as an actively adjustable structural unit that is adjustable depending on actual state variables or parameters of the vehicle or of a device of the vehicle.
  • the switch member can also form at the same time a throttle in the air inlet of the internal combustion engine by means of which the air supply to the internal combustion engine is regulated. It is also possible to configure the switch member and the throttle in the air inlet of the internal combustion engine as separate components and to make the position of the switch member dependent on the position of the throttle, wherein advantageously the switch member and the throttle are opened and closed synchronously.
  • an air flow generating device In the flow path of the brake dust from the intake socket to the raw side of the intake air filter, an air flow generating device can be arranged that provides an additional pressure gradient for sucking away the brake dust.
  • the air flow generating device can be in particular an electrically operated fan or an electrically operated pump.
  • the air flow generating device can be operated in particular in operating states of the filter system according to the invention in which no sufficient suction vacuum is present at the clean side of the intake air filter. Since in this way brake dust particles can be separated across a wider suction vacuum band, the total quantity of the brake dust separable by means of the filter system according to the invention can be increased in this way.
  • the switch member is configured as a switch flap which is supported so as to be pivotable about an axis of rotation and can be pivoted between open and closed position. In this way, the free flow cross section of the intake line for the intake air is adjusted to a desired value.
  • the switch member is in particular configured to be electrically actuated.
  • the power input required for adjusting the switch member is very minimal in comparison to the power input of a pump; in addition, no pump noise is produced.
  • the suction output that is produced by the internal combustion engine is available without time delay and is used in the braking operation immediately for producing the brake air flow.
  • the intake line opens into an intake socket at the air filter housing, wherein the intake socket accommodates the switch member.
  • the intake socket can be arranged inside or outside of the air filter housing.
  • the filter system comprises a brake dust filter that comprises a brake dust filter body which is arranged in the flow path of the brake dust to the raw side of the intake air filter. Due to this brake dust filter that is embodied separate from the intake air filter, a specially tailored separation in regard to the particle spectrum of the brake dust is enabled which spares the filter medium body in the intake air filter.
  • the brake dust filter comprises advantageously a brake dust filter body for absorbing brake dust.
  • the brake dust filter body and the filter medium body are in particular embodied as separate components that are independent from each other which entails the advantage that brake dust filter body and filter medium body can be optimized with regard to their respective intended use. Since the filter medium body must not absorb any brake dust but only generally larger particles from the intake air, the service life of the filter medium body is increased and an undesirably high pressure drop at the filter medium body is avoided.
  • the brake dust filter body can be configured for absorbing the small brake dust particles.
  • the brake dust filter body is positioned in the flow path to the raw side of the intake air filter so that a purified brake air flow is guided downstream of the brake dust filter body to the raw side of the intake air filter.
  • the intake air as well as the purified brake air flow are sucked in by the pressure difference between raw side and clean side of the filter medium body and introduced into the air filter housing with the filter medium body.
  • the internal combustion engine forms with the vacuum at the cylinder inlets a pump for producing the intake air flow as well as the brake air flow; an additional air flow generator for generating the brake air flow, which is to be actively operated and consumes energy, is not mandatorily required.
  • the flow path of the brake dust to the raw side of the intake air filter comprises a pipe that branches off a particle filter housing with brake dust filter body accommodated therein.
  • at least one brake air hose conduit opens into the particle filter housing by means of which brake dust is guided from the location of generation at the brake disc to the brake dust filter body in the particle filter housing. It can be expedient to guide the brake dust from at least two brake discs at different wheels via a respective brake air hose conduit into the particle filter housing, wherein, as needed, the brake dust of all brake discs of the vehicle is guided respectively via a brake air hose conduit into the particle filter housing.
  • the switch member for adjustment of the intake air supply, is positioned in a closed position in the braking operation of the vehicle with actuation of the vehicle brake and, in vehicle states without braking operation, in a position that is opened more in relation to the closed position, as needed, in the maximally opened open position.
  • the vehicle states without braking operation comprise the driven operating mode in which the vehicle travels by supply of an engine drive moment as well as travel without supply of an engine drive moment and without supply of a brake moment via the vehicle brake, for example, during coasting of the vehicle or during braking by means of engine or transmission brake.
  • the produced brake dust is transported by the brake air flow to the raw side of the intake air filter, wherein the entire, or almost entire, vacuum output is available for generating the brake air flow due to the closed position of the switch member.
  • the switch member In travel states without actuation of the vehicle brake, the switch member is in a position which is opened wider in relation to the closed position and in which the desired intake air flow is guided to the raw side of the intake air filter. The brake air flow does not subside completely in this travel state; however, it is reduced in comparison to the closed position of the switch member.
  • the switch member in the closed position, is positioned in a position in which a minimal flow of intake air is introduced into the air filter housing. This ensures that in all operating states a minimal flow of the intake air is guided to the raw side of the filter medium body so that the internal combustion engine or fuel cell, even with the switch member closed, can be operated at least with reduced output.
  • a minimal flow of brake air flow can be introduced into the air filter housing in the open position of the switch member. This serves to provide a certain “basic load” or a certain vacuum level at the suction socket during travel without braking or already at the beginning of a braking action.
  • the switch member is advantageously controlled by control signals of a control unit.
  • the control unit can form together with the filter system a structural unit in that the control unit is arranged, for example, in or at the air filter housing of the filter system.
  • the control unit receives as input signals brake signals from the vehicle brake of the vehicle or from a brake control unit and drive signals from the internal combustion engine or from a motor control unit of the vehicle.
  • the control unit can also receive and process state variable signals from a vehicle sensor system for state variable detection.
  • the control unit can receive and process signals of further units of the vehicle, for example, environment parameters such as temperature or moisture.
  • the invention relates furthermore to a computer program product with a program code that is configured to perform the afore described method steps.
  • the computer program product runs on the afore described control unit.
  • a filter system 12 which comprises an intake air filter 13 and a brake dust filter 14.
  • the filter system 12 can be used in vehicles with internal combustion engine and/or fuel cell and a vehicle brake embodied as a friction brake.
  • intake air filter 13 of the filter system 12 intake air supplied from the environment is purified and, in the further course, is supplied as clean air to the inlet of the internal combustion engine and/or fuel cell.
  • the brake dust filter 14 filters brake dust from a brake air flow that discharges the brake dust from the location of generation at the vehicle brake.
  • the vehicle brake comprises brake devices with a respective brake disc 1 and a respective brake caliper 2 which is carrier of the brake pads which are pressed against the brake disc 1 during braking. Due to the friction between the brake pads and the brake disc 1 , the abrasion particles or brake particles forming the brake dust are released.
  • the intake air filter 13 comprises an air filter housing 7 and a filter medium body 8 which is accommodated in the air filter housing 7.
  • an intake line 9 opens into the air filter housing 7 via which the unpurified air from the environment is guided to the raw side of the filter medium body 8.
  • a clean air line 10 branches off the filter housing 7 and extends to the air inlet of the internal combustion engine and/or fuel cell of the vehicle. Via the clean air line 10, the purified intake air is supplied to the air inlet of the internal combustion engine and/or the fuel cell.
  • the brake dust filter 14 which is part of the filter system 12 comprises a brake dust filter body 5 in a particle filter housing 5a and brake air hose conduits 4 which guide the brake dust into the particle filter housing 5a of the brake dust filter body 5 via intake sockets 3 at the brake caliper 2 of each brake device.
  • a pipe 6 branches off the particle filter housing 5a and connects the clean side of the brake dust filter body 5 in the particle filter housing 5a to the raw side of the intake air filter 13. Via the pipe 6 the purified brake air flow is guided into the air filter housing 7 at the raw side of the filter medium body 8.
  • the brake dust filter body 5 ensures that only a purified brake air flow can reach the air filter housing 7 so that it is ensured that the filter medium body 8 in the air filter housing 7 does not become clogged by the fine brake dust particles.
  • an air flow generating device can be arranged that provides an additional pressure gradient for sucking away brake dust via the suction sockets 3. In this way, an improved suction action of brake dust can be achieved when the suction vacuum present at the clean side of the intake air filter 13 is insufficient.
  • a switch member 11 is provided that is configured to be adjustable and by means of which the free flow cross section for regulating the intake air flow can be adjusted.
  • the intake socket 9a is arranged inside of the air filter housing 7 and can be designed as one piece together with the air filter housing 7. It is also possible to configure the intake socket 9a as one piece together with the intake line 9.
  • the switch member 11 can be arranged inside or outside of the filter housing 7 but advantageously at the wall or adjacent to the wall of the air filter housing 7.
  • the filter system 12 is preferably provided with a control unit in which control signals for adjustment of the switch member 11 embodied as a switch flap can be generated.
  • the control unit receives signals which represent the actual state of the vehicle brake and of the internal combustion engine and/or fuel cell.
  • other parameters or state variables of the vehicle can be supplied to the control unit as input signals which originate from a vehicle sensor system and, for example, concern kinematic state variables such as speed or acceleration in longitudinal or transverse direction.
  • the switch member 11 is configured to be electrically actuated wherein a switch body of the switch member 11 is adjusted by the control signals of the control unit in order to adjust the desired flow cross section for the intake air.
  • the switch member 11 depending on the demand of the internal combustion engine and/or fuel cell, can be in a position opened more or less wide in which an intake air flow is supplied to the intake air filter 13. As soon as the vehicle brake is actuated and the vehicle accordingly is in the braking operation, the switch member 11 is adjusted into its closed position in which either no intake air flow or only a minimal intake air flow reaches the intake air filter 13.
  • the vacuum that is produced by the internal combustion engine and/or fuel cell and is acting in the air filter housing 7 produces now a brake air flow with which the purified brake air is guided from the clean side of the brake dust filter body 5 through the pipe 6 to the raw side of the filter medium body 8 in the air filter housing 7.
  • the vacuum effects a pressure gradient at the brake dust filter body 5 so that the brake dust is discharged away from the location of generation at the brake disc 1 and is guided to the brake dust filter body 5 at which the filtration of the brake air flow is realized.
  • the switch member 11 can be adjusted again from the closed position into a position that is opened wider.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

La présente invention concerne un système de filtre dans un véhicule, lequel système de filtre comprend un filtre à air d'admission doté d'un boîtier de filtre à air et un corps de média filtrant dans le boîtier de filtre à air, une conduite d'admission pour l'air d'admission débouchant dans le côté brut du filtre à air d'admission et le côté propre du filtre à air d'admission étant relié en communication fluidique à l'entrée d'air d'un moteur à combustion interne. Le système de filtre comprend en outre une douille d'aspiration agencée à proximité d'une roue pour recevoir la poussière de freinage, la voie d'écoulement de la poussière de freinage étant guidée vers le côté brut du filtre à air d'admission. Un élément de commutation pour ajuster l'alimentation en air d'admission est agencé dans la voie d'écoulement de l'air d'admission en amont du corps de média filtrant.
PCT/EP2022/082034 2021-12-15 2022-11-15 Système de filtre dans un véhicule WO2023110264A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021133194.3 2021-12-15
DE102021133194.3A DE102021133194A1 (de) 2021-12-15 2021-12-15 Filteranordnung in einem Fahrzeug

Publications (1)

Publication Number Publication Date
WO2023110264A1 true WO2023110264A1 (fr) 2023-06-22

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PCT/EP2022/082034 WO2023110264A1 (fr) 2021-12-15 2022-11-15 Système de filtre dans un véhicule

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WO (1) WO2023110264A1 (fr)

Citations (5)

* 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
DE202006016661U1 (de) * 2006-10-27 2008-03-06 Mann+Hummel Gmbh Filteranordnung für Bremsstaubrückhalteanlagen
EP2725255A1 (fr) * 2012-10-26 2014-04-30 Przemyslowy Instytut Motoryzacji Appareil a réduire l'emission de poussières
WO2015199412A1 (fr) * 2014-06-24 2015-12-30 한청원 Dispositif de captage des poussières pour des roues de véhicule
WO2020094950A1 (fr) * 2018-11-08 2020-05-14 Tallano Technologie Système d'aspiration des particules de freinage avec maintien de dépression

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3161187A (en) 1964-01-14 1964-12-15 Gen Motors Corp Crankcase ventilation control device
US9328702B2 (en) 2013-10-24 2016-05-03 Ford Global Technologies, Llc Multiple tap aspirator

Patent Citations (6)

* 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
DE202006016661U1 (de) * 2006-10-27 2008-03-06 Mann+Hummel Gmbh Filteranordnung für Bremsstaubrückhalteanlagen
WO2008049829A1 (fr) 2006-10-27 2008-05-02 Mann+Hummel Gmbh Ensemble de filtre pour systèmes d'élimination de poussière de frein
EP2725255A1 (fr) * 2012-10-26 2014-04-30 Przemyslowy Instytut Motoryzacji Appareil a réduire l'emission de poussières
WO2015199412A1 (fr) * 2014-06-24 2015-12-30 한청원 Dispositif de captage des poussières pour des roues de véhicule
WO2020094950A1 (fr) * 2018-11-08 2020-05-14 Tallano Technologie Système d'aspiration des particules de freinage avec maintien de dépression

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Publication number Publication date
DE102021133194A1 (de) 2023-06-15

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