DE19521612A1 - Service interval identification unit, e.g. for filter units - Google Patents

Service interval identification unit, e.g. for filter units

Info

Publication number
DE19521612A1
DE19521612A1 DE19521612A DE19521612A DE19521612A1 DE 19521612 A1 DE19521612 A1 DE 19521612A1 DE 19521612 A DE19521612 A DE 19521612A DE 19521612 A DE19521612 A DE 19521612A DE 19521612 A1 DE19521612 A1 DE 19521612A1
Authority
DE
Germany
Prior art keywords
maintenance interval
interval detection
detection according
time
filter
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Withdrawn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
DE19521612A
Other languages
German (de)
Inventor
Heinz Mueller
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.)
Mann and Hummel GmbH
Original Assignee
Filterwerk Mann and 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 Filterwerk Mann and Hummel GmbH filed Critical Filterwerk Mann and Hummel GmbH
Priority to DE19521612A priority Critical patent/DE19521612A1/en
Publication of DE19521612A1 publication Critical patent/DE19521612A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
    • B01D46/0086—Filter condition indicators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/143—Filter condition indicators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42—Auxiliary equipment or operation thereof
    • B01D46/44—Auxiliary equipment or operation thereof controlling filtration
    • B01D46/46—Auxiliary equipment or operation thereof controlling filtration automatic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/06—Filtering
    • 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
    • F02M35/02—Air cleaners
    • F02M35/08—Air cleaners with means for removing dust, particles or liquids from cleaners; with means for indicating clogging; with by-pass means; Regeneration of cleaners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/06—Filtering
    • B60H2003/0683—Filtering the quality of the filter or the air being checked
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/39—Monitoring filter performance

Abstract

The service interval identification unit, esp. for filter units, consists of a display device which is connected to a timer monitoring device, which measures the actual operating time and/or the total time the filter has been installed. The display device contains a signal unit, which delivers a signal if at least one of the predetermined limiting values is exceeded.

Description

Die Erfindung betrifft eine Wartungsintervallerkennung, insbesondere für eine Filteranordnung eines Kraftfahrzeu­ ges, nach der Gattung des Hauptanspruchs.The invention relates to a maintenance interval detection, in particular for a filter arrangement of a motor vehicle ges, according to the genus of the main claim.

Stand der TechnikState of the art

Aus der DE-OS 44 13 148 ist eine Luftfilterbelastungsanzei­ ge für den Filtereinsatz einer Luftfiltereinrichtung in ei­ nem Kraftfahrzeug bekannt, bei der der aus Gewebefasern be­ stehende Filtereinsatz einen Überwachungsfilterbereich ent­ hält. Dieser Überwachungsfilterbereich hat einen relativ hohen Durchflußwiderstand und verfärbt sich durch die hän­ genbleibenden Staubpartikel derart, daß aus einem Vergleich mit einer in der Nähe angebrachten Grautonskala der Ver­ schmutzungszustand und damit eine Wartungsintervallanzeige realisieren läßt.From DE-OS 44 13 148 is an air filter load indicator ge for the filter insert of an air filter device in egg known a motor vehicle, in which be made of fabric fibers filter insert a monitoring filter area holds. This monitoring filter area has a relative one high flow resistance and discolored by the hand remaining dust particles such that from a comparison with a gray scale of Ver  state of dirt and thus a maintenance interval display can be realized.

Bei einer weiteren aus der DE-OS 34 25 339 bekannten Anord­ nung wird bei einem Luftreinigungsgerät im Haushaltsbereich ein Indikatorpapier für die Wartungsintervallanzeige einge­ setzt, wobei auch optische oder akustische Mittel zur Si­ gnalisierung eines Wartungsintervalls vorgeschlagen werden.In another arrangement known from DE-OS 34 25 339 Air purification device in the household sector an indicator paper for the maintenance interval display sets, with optical or acoustic means for Si gnalization of a maintenance interval are proposed.

AufgabenstellungTask

Der Erfindung liegt die Aufgabe zugrunde, eine Wartungsin­ tervallerkennung der eingangs genannten Art so fortzubil­ den, daß auf einfache Weise ein optimiertes Wartungsinter­ vall ermittelt und angezeigt wird.The invention has for its object a maintenance Cervall detection of the type mentioned above to continue that in a simple way an optimized maintenance inter vall is determined and displayed.

Vorteile der ErfindungAdvantages of the invention

Die Wartungsintervallerkennung der eingangs genannten Art ist erfindungsgemäß so ausgebildet, daß in vorteilhafter Weise eine Erfassung der Betriebsdauer und/oder der gesam­ ten Einbauzeit einer Filteranordnung möglich wird.The maintenance interval detection of the type mentioned at the beginning is designed according to the invention so that advantageous How to record the operating time and / or the total installation time of a filter arrangement becomes possible.

Beispielsweise bestehen die Luftfilter für Kraftfahrzeuge mit Verbrennungsmotor aus Papiereinsätzen, die nach einer gewissen Einsatzzeit nicht mehr voll funktionsfähig sind. Diese Papiereinsätze sind je nach Motorleistung, Fahrzeu­ gart und Einsatzort ausgelegt und werden in der Regel ent­ weder nach einer vorgegebenen Kilometerleistung des Fahr­ zeugs oder nach einem vom Fahrzeughersteller vorgegebenen Zeitablauf ausgetauscht. Diese somit vorgegebenen Wartungs­ intervalle schwanken je nach Fahrzeughersteller zwischen 2 und 4 Jahren bzw. zwischen 10 000 km und 60 000 km, wobei es immer vorkommen kann, daß bei einer Nutzung im Grenzbe­ reich dieser Vorgaben der Filtereinsatz bei den bekannten Einrichtungen nicht rechtzeitig ausgewechselt wird. Erfin­ dungsgemäß wird vorgeschlagen, daß eine separate Zeiterfas­ sung an der Filteranordnung vorgenommen wird.For example, there are air filters for motor vehicles with internal combustion engine made of paper inserts, which after a certain operational times are no longer fully functional. These paper inserts are depending on engine power, vehicle garden and place of use and are usually ent neither after a given mileage of the driving or one specified by the vehicle manufacturer Exchanged timing. This predetermined maintenance intervals vary between 2 depending on the vehicle manufacturer  and 4 years or between 10,000 km and 60,000 km, whereby it can always happen that when using the Grenzbe the filter insert in the well-known Facilities are not replaced in time. Erfin According to the invention, it is proposed that a separate time recording Solution is made on the filter assembly.

Mit den in den Unteransprüchen angegebenen vorteilhaften Weiterbildungen lassen sich insbesondere die Betriebszeiten der Filteranordnung, beispielsweise über die Betriebszeiten des Motors eines Kraftfahrzeuges, einfach über eine elek­ trisch gesteuerte Digitaluhr erfassen. Auch eine entspre­ chende Gewichtung der Betriebszeiten und der Einbauzeit läßt sich zur Ermittlung eines jeweils für den Einsatzfall optimierten Wartungstermins durchführen; dieser ist somit unabhängig von den sonstigen, in der Regel vom Fahrzeugher­ steller nach anderen Gesichtspunkten fixierten Wartungsin­ tervallen.With the advantageous specified in the subclaims Training can be especially the operating hours the filter arrangement, for example over the operating times the engine of a motor vehicle, simply via an elec Digitally controlled clock. Also a correspond appropriate weighting of the operating times and the installation time can be used to determine one for each application carry out optimized maintenance appointments; this is therefore regardless of the others, usually by the vehicle maintenance according to other criteria tervallen.

Claims (9)

1. Wartungsintervallerkennung, insbesondere für Filteran­ ordnungen, mit
  • - einer Anzeigevorrichtung, dadurch gekennzeichnet, daß
  • - die Anzeigevorrichtung mit mindestens einer Zeiterfassung verbunden ist, die die tatsächlichen Betriebszeiten und/oder die gesamte Zeit seit dem Einbau der Filteranord­ nung erfaßt und daß
  • - die Anzeigevorrichtung Signalmittel enthält, die bei Überschreiten mindestens eines vorgebenen Grenzwertes ein Signal abgeben.
1. Maintenance interval detection, especially for filter arrangements, with
  • - A display device, characterized in that
  • - The display device is connected to at least one time recording, which detects the actual operating times and / or the total time since the installation of the filter arrangement and that
  • - The display device contains signal means which emit a signal when at least one predetermined limit value is exceeded.
2. Wartungsintervallerkennung nach Anspruch 1, dadurch ge­ kennzeichnet, daß
  • - die Betriebszeiterfassung über einen elektrischen, wäh­ rend des Betriebs eines Kraftfahrzeugs aktivierten Kontakt gesteuert ist.
2. Maintenance interval detection according to claim 1, characterized in that
  • - The operating time detection is controlled via an electrical contact activated during operation of a motor vehicle.
3. Wartungsintervallerkennung nach Anspruch 1 oder 2, da­ durch gekennzeichnet, daß
  • - die Erfassung der gesamten Einbauzeit über einen von der Batterie eines Kraftfahrzeuges nach erfolgtem Einbau der Filteranordnung aktivierten Kontakt gesteuert ist.
3. Maintenance interval detection according to claim 1 or 2, characterized in that
  • - The detection of the total installation time is controlled via a contact activated by the battery of a motor vehicle after the filter arrangement has been installed.
4. Wartungsintervallerkennung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß
  • - die Zeiterfassungseinrichtung eine digitale Quarzuhr ist.
4. Maintenance interval detection according to one of the preceding claims, characterized in that
  • - The time recording device is a digital quartz clock.
5. Wartungsintervallerkennung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß
  • - die Betriebs zeit und die Einbauzeit mit vorgegebenen Faktoren gewichtet wird und ein Überschreiten des hierauf bezogenen Grenzwertes zu einer Signalisierung führt.
5. Maintenance interval detection according to one of the preceding claims, characterized in that
  • - The operating time and the installation time are weighted with predetermined factors and an exceeding of the related limit value leads to a signaling.
6. Wartungsintervallerkennung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß
  • - als Signalmittel optische Leuchtmittel, vorzugsweise Leuchtdioden, verwendet sind, die beim Überschreiten minde­ stens einer der Grenzwerte ein optisches Signal abgeben.
6. Maintenance interval detection according to one of the preceding claims, characterized in that
  • - Optical light sources, preferably light-emitting diodes, are used as signal means, which emit an optical signal when at least one of the limit values is exceeded.
7. Wartungsintervallerkennung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß
  • - die Signalmittel außen an der Filteranordnung und/oder am Filtereinsatz angebracht sind.
7. Maintenance interval detection according to one of the preceding claims, characterized in that
  • - The signaling means are attached to the outside of the filter arrangement and / or the filter insert.
8. Wartungsintervallerkennung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß
  • - die Signalmittel am Armaturenbrett eines Fahrzeugs ange­ bracht sind.
8. Maintenance interval detection according to one of the preceding claims, characterized in that
  • - The signaling means are placed on the dashboard of a vehicle.
9. Wartungsintervallerkennung nach Anspruch 1, dadurch ge­ kennzeichnet, daß
  • - die Erfassung der Einbauzeit der Filteranordnung mittels einer Einrichtung vorgenommen wird, die eine durch Zeitab­ lauf sich ändernde Verfärbung aufweist.
9. Maintenance interval detection according to claim 1, characterized in that
  • - The detection of the installation time of the filter arrangement is carried out by means of a device which has a discoloration that changes over time.
DE19521612A 1995-06-14 1995-06-14 Service interval identification unit, e.g. for filter units Withdrawn DE19521612A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19521612A DE19521612A1 (en) 1995-06-14 1995-06-14 Service interval identification unit, e.g. for filter units

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19521612A DE19521612A1 (en) 1995-06-14 1995-06-14 Service interval identification unit, e.g. for filter units

Publications (1)

Publication Number Publication Date
DE19521612A1 true DE19521612A1 (en) 1996-12-19

Family

ID=7764348

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19521612A Withdrawn DE19521612A1 (en) 1995-06-14 1995-06-14 Service interval identification unit, e.g. for filter units

Country Status (1)

Country Link
DE (1) DE19521612A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19842632A1 (en) * 1998-09-17 2000-03-23 Brandes Joerg Physical-chemical air filter has insert comprising respiratory lime and/or lithium hydroxide
DE19850225A1 (en) * 1998-10-26 2000-05-04 Schoettler Lunos Lueftung Condition monitoring device for filters comprises an integrator or counter for a pulsed and/or analogue input signal
DE19905610A1 (en) * 1999-02-11 2000-08-17 Bayerische Motoren Werke Ag Process for determining the state of a filter comprises determining the blower running time and estimating the state of the filter via a consideration of the sum of the blower running time
FR2825451A1 (en) * 2001-06-01 2002-12-06 Callens Conditionnement Produi Refrigerator filter replacement indicator includes electronic circuit counting door openings, and sounding replacement warning when threshold is exceeded
DE102004020715A1 (en) * 2004-04-28 2005-11-24 J. Eberspächer GmbH & Co. KG A vehicle heating system and method of operating a vehicle heating system
ITTO20130419A1 (en) * 2013-05-24 2014-11-25 Denso Thermal Systems Spa METHOD OF MONITORING THE SATURATION LEVEL OF AN ADSORPTION FILTER FOR AIRFLOW FLUIDS
FR3089130A1 (en) * 2018-11-30 2020-06-05 Sogefi Filtration METHOD AND SYSTEM FOR CONTROLLING AN AIR FILTER IN A VEHICLE USING EVOLUTION PARAMETERS SINCE THE INSTALLATION OF THE AIR FILTER
DE102007045286B4 (en) * 2006-09-22 2021-06-24 General Motors Corp. Method for controlling a filter maintenance indicator

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1969146U (en) * 1967-03-22 1967-09-28 Chemie Filter Gmbh Verfahren BACKFLOW LIQUID FILTER.
US3912632A (en) * 1970-04-14 1975-10-14 Brunswick Corp Filter device
DE2748913A1 (en) * 1977-11-02 1979-05-03 Neff Werke Vapour extractor hood with saturation indicator - is for grease and/or odour filter and uses electrochemical indicator in glass tube
DE3105677A1 (en) * 1981-02-17 1982-09-16 Standard Meßgerätefabrik GmbH, 4760 Werl FILTERS FOR LIQUIDS, IN PARTICULAR WATER FILTERS FOR THE DRINKING WATER SUPPLY
DE3425339A1 (en) * 1984-07-10 1986-01-23 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Air-purification device, in particular vapour extractor hood
DE8630191U1 (en) * 1986-11-11 1987-01-02 Gruen, Udo, 7500 Karlsruhe, De
DE3539410A1 (en) * 1985-11-07 1987-05-14 Licentia Gmbh Fat (grease) filter mat, consisting of a fibre fleece (nonwoven) or the like for kitchen range extractor hoods
DE3644045A1 (en) * 1986-12-22 1988-06-30 Wilhelm Doerenkaemper Apparatus for monitoring the soiling of gas filters, in particular air filters
DE3808299A1 (en) * 1988-03-12 1989-09-21 Binzer Papierfab J Filter for extractor hoods
WO1991017354A1 (en) * 1990-05-04 1991-11-14 Allied-Signal Inc. Method and apparatus for predicting life of air filter cartridges
US5089144A (en) * 1989-12-08 1992-02-18 Nartron Corporation Filter condition indicator having moveable sensor and aggregate flow counter
DE3836530C2 (en) * 1988-10-27 1992-05-07 August G. Koch Maschinenfabrik, 2300 Kiel, De
DE3131281C2 (en) * 1981-08-07 1993-10-21 Fluidtech Gmbh Device for carrying two streams separately, optionally only one stream, at least one medium
DE4224263A1 (en) * 1992-07-23 1994-01-27 Gea Happel Klimatechnik Device for measuring the deposits of a filter or sieve
DE4407969A1 (en) * 1993-03-20 1994-09-22 Maico Elektroapparate Ventilator with filter clogging indication
DE9413558U1 (en) * 1994-08-23 1994-10-13 Mann & Hummel Filter Device for displaying the degree of contamination of a filter
WO1994022551A1 (en) * 1993-03-29 1994-10-13 Doctro A.V.V. Assembly of filtering apparatus and replaceable filter; and filtering apparatus and filter for use therein
DE4413148A1 (en) * 1994-04-15 1995-04-20 Daimler Benz Ag Filter loading indicator

Patent Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1969146U (en) * 1967-03-22 1967-09-28 Chemie Filter Gmbh Verfahren BACKFLOW LIQUID FILTER.
US3912632A (en) * 1970-04-14 1975-10-14 Brunswick Corp Filter device
DE2748913A1 (en) * 1977-11-02 1979-05-03 Neff Werke Vapour extractor hood with saturation indicator - is for grease and/or odour filter and uses electrochemical indicator in glass tube
DE3105677A1 (en) * 1981-02-17 1982-09-16 Standard Meßgerätefabrik GmbH, 4760 Werl FILTERS FOR LIQUIDS, IN PARTICULAR WATER FILTERS FOR THE DRINKING WATER SUPPLY
DE3131281C2 (en) * 1981-08-07 1993-10-21 Fluidtech Gmbh Device for carrying two streams separately, optionally only one stream, at least one medium
DE3425339A1 (en) * 1984-07-10 1986-01-23 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Air-purification device, in particular vapour extractor hood
DE3539410A1 (en) * 1985-11-07 1987-05-14 Licentia Gmbh Fat (grease) filter mat, consisting of a fibre fleece (nonwoven) or the like for kitchen range extractor hoods
DE8630191U1 (en) * 1986-11-11 1987-01-02 Gruen, Udo, 7500 Karlsruhe, De
DE3644045A1 (en) * 1986-12-22 1988-06-30 Wilhelm Doerenkaemper Apparatus for monitoring the soiling of gas filters, in particular air filters
DE3808299A1 (en) * 1988-03-12 1989-09-21 Binzer Papierfab J Filter for extractor hoods
DE3836530C2 (en) * 1988-10-27 1992-05-07 August G. Koch Maschinenfabrik, 2300 Kiel, De
US5089144B1 (en) * 1989-12-08 1996-11-12 Nartron Corp Filter condition indicator having moveable sensor and aggregate flow counter
US5089144A (en) * 1989-12-08 1992-02-18 Nartron Corporation Filter condition indicator having moveable sensor and aggregate flow counter
WO1991017354A1 (en) * 1990-05-04 1991-11-14 Allied-Signal Inc. Method and apparatus for predicting life of air filter cartridges
DE4224263A1 (en) * 1992-07-23 1994-01-27 Gea Happel Klimatechnik Device for measuring the deposits of a filter or sieve
DE4407969A1 (en) * 1993-03-20 1994-09-22 Maico Elektroapparate Ventilator with filter clogging indication
WO1994022551A1 (en) * 1993-03-29 1994-10-13 Doctro A.V.V. Assembly of filtering apparatus and replaceable filter; and filtering apparatus and filter for use therein
DE4413148A1 (en) * 1994-04-15 1995-04-20 Daimler Benz Ag Filter loading indicator
DE9413558U1 (en) * 1994-08-23 1994-10-13 Mann & Hummel Filter Device for displaying the degree of contamination of a filter

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* Cited by examiner, † Cited by third party
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19842632A1 (en) * 1998-09-17 2000-03-23 Brandes Joerg Physical-chemical air filter has insert comprising respiratory lime and/or lithium hydroxide
DE19850225A1 (en) * 1998-10-26 2000-05-04 Schoettler Lunos Lueftung Condition monitoring device for filters comprises an integrator or counter for a pulsed and/or analogue input signal
DE19905610A1 (en) * 1999-02-11 2000-08-17 Bayerische Motoren Werke Ag Process for determining the state of a filter comprises determining the blower running time and estimating the state of the filter via a consideration of the sum of the blower running time
DE19905610B4 (en) * 1999-02-11 2007-01-18 Bayerische Motoren Werke Ag Method for filter state detection for cabin air filters in a vehicle
FR2825451A1 (en) * 2001-06-01 2002-12-06 Callens Conditionnement Produi Refrigerator filter replacement indicator includes electronic circuit counting door openings, and sounding replacement warning when threshold is exceeded
DE102004020715A1 (en) * 2004-04-28 2005-11-24 J. Eberspächer GmbH & Co. KG A vehicle heating system and method of operating a vehicle heating system
DE102007045286B4 (en) * 2006-09-22 2021-06-24 General Motors Corp. Method for controlling a filter maintenance indicator
ITTO20130419A1 (en) * 2013-05-24 2014-11-25 Denso Thermal Systems Spa METHOD OF MONITORING THE SATURATION LEVEL OF AN ADSORPTION FILTER FOR AIRFLOW FLUIDS
FR3089130A1 (en) * 2018-11-30 2020-06-05 Sogefi Filtration METHOD AND SYSTEM FOR CONTROLLING AN AIR FILTER IN A VEHICLE USING EVOLUTION PARAMETERS SINCE THE INSTALLATION OF THE AIR FILTER

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