NL2022200B1 - Air filter assembly for an internal combustion engine of a commercial motor vehicle. - Google Patents

Air filter assembly for an internal combustion engine of a commercial motor vehicle. Download PDF

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Publication number
NL2022200B1
NL2022200B1 NL2022200A NL2022200A NL2022200B1 NL 2022200 B1 NL2022200 B1 NL 2022200B1 NL 2022200 A NL2022200 A NL 2022200A NL 2022200 A NL2022200 A NL 2022200A NL 2022200 B1 NL2022200 B1 NL 2022200B1
Authority
NL
Netherlands
Prior art keywords
inlet
air
internal combustion
combustion engine
filter assembly
Prior art date
Application number
NL2022200A
Other languages
Dutch (nl)
Inventor
Nieuwkoop Jan
Houben Eric
Original Assignee
Daf Trucks Nv
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 Daf Trucks Nv filed Critical Daf Trucks Nv
Priority to NL2022200A priority Critical patent/NL2022200B1/en
Application granted granted Critical
Publication of NL2022200B1 publication Critical patent/NL2022200B1/en

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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
    • F02M35/02—Air cleaners
    • F02M35/022—Air cleaners acting by gravity, by centrifugal, or by other inertial forces, e.g. with moistened walls
    • 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
    • F02M35/022—Air cleaners acting by gravity, by centrifugal, or by other inertial forces, e.g. with moistened walls
    • F02M35/0223—Air cleaners acting by gravity, by centrifugal, or by other inertial forces, e.g. with moistened walls by centrifugal forces, e.g. cyclones
    • 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
    • F02M35/088—Water, snow or ice proofing; Separation or drainage of water, snow or ice

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  • 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)

Abstract

An air filter assembly for an internal combustion engine of a commercial motor vehicle comprises an intake air inlet duct, a filter system for purifying the intake air and a filtered air duct for supplying filtered air from the filter system to the internal combustion engine. The filter system comprises a filtration element arranged in a filter housing which has a top wall and a bottom wall. The top wall of the filter housing has a top inlet opening. The intake air inlet duct has an inlet duct end arranged in fluid communication with the top inlet opening. A moisture accumulating and discharge element is arranged upstream of the filtration element and downstream of the intake air inlet duct for accumulating moisture deposited on an inner wall of the intake air inlet duct.

Description

P121364NL00 Title: Air filter assembly for an internal combustion engine of a commercial motor vehicle.
The invention relates to an air filter assembly for an internal combustion engine of a commercial motor vehicle, said air filter assembly comprising an intake air inlet duct, a filter system for purifying the intake air supplied by the intake air inlet duct and a filtered air duct for supplying filtered air from the filter system to the internal combustion engine, said filter system comprising a filtration element arranged in a filter housing.
In order to prevent or reduce the negative effect of the presence of water in the intake air supplied to an internal combustion engine it is for example known from US-A-3,641,744 to arrange a water separator in the form of an elbow directly upstream of the air filtration element which is arranged inside a flat housing having a top wall, a bottom wall, and side walls. One of the side walls of the flat housing comprises an inlet opening for the intake air, which is supplied to inlet opening by an intake air inlet duct which is arranged adjacent the side walls of the flat housing. The elbow is arranged adjacent side walls of the flat housing and is in fluid communication with the intake air inlet duct and diverts the intake air laterally at substantially a right angle from the intake air inlet duct into the filter housing. Excess moisture impinges on the surface of the elbow and is gathered in a lower trough integrated with the elbow. Although in this known arrangement of flat housing, intake air inlet duct and elbow with lower trough water or moisture can be separated from the intake air the known construction is too bulky to be used in modern commercial motor vehicles, in particular trucks, in which due to number the components contained in the engine compartment the space in the vehicle compartment is limited.
It is therefore an object of the invention to provide a compact air filter assembly for an internal combustion engine of a commercial motorvehicle in which water or moisture can be efficiently separated from the intake air.
According to the invention this object is obtained by an air filter assembly for an internal combustion engine of a commercial motor vehicle according to claim 1. The invention is based on the insight that intake air passes through the intake air inlet duct in a swirling motion. Due to the swirling motion of the intake air inside the intake air inlet duct moisture content of the intake air will as a result of the centrifugal force exerted thereupon be deposited on an inner wall of the intake air inlet duct. By providing the top wall of the filter housing with a top inlet opening, by arranging the inlet duct end in fluid communication with this top inlet opening and by arranging the moisture accumulating and discharge element upstream of the filtration element and downstream of the intake air inlet duct the air filter assembly for an internal combustion engine can be realized in a compact manner while still being able to separate moisture from the intake air in an efficient manner.
In an embodiment of an air filter assembly for an internal combustion engine of a commercial motor vehicle according to the invention the moisture accumulating and discharge element comprises an annular gutter with a drainage, said annular gutter being arranged adjacent the inlet duct end, said annular gutter having a radial annular inner wall having a diameter smaller than an inner diameter of the inlet duct end. By using such an annular gutter the air filter assembly can be constructed in a compact manner, and the annular gutter accumulates the moisture dripping or seeping down of the inner wall of the intake air inlet duct. The drainage allows for gathered moisture to be discharged from the gutter. The annular gutter can be connected to the inlet duct end and/or the annular gutter can be connected to an inlet stud of the housing, which inlet stud projects from the top wall and surrounds the top inlet opening.
In a further embodiment of an air filter assembly for an internal combustion engine of a commercial motor vehicle according to the invention the bottom wall of the housing comprises a further drainage for discharging moisture from said housing. By using such a further drainage in the bottom wall of the filter housing, moisture or water content in the intake air that that 1s still contained in the intake air that has passed the moisture accumulating and discharge element and that has been deposited on the inner walls of the filter housing and dripped or seeped down on the bottom wall of the filter housing, can be discharged from the filter housing thereby providing an additional dehydration of the intake air.
The invention will be further explained with reference to the Figure, in which a non-limiting exemplary embodiment of an air filter assembly for an internal combustion engine of a commercial motor vehicle according to the invention is shown: Fig. 1 schematically shows an embodiment of an air filter assembly for an internal combustion engine of a commercial motor vehicle according to the invention in perspective and cut open.
In Figure 1 the air filter assembly for an internal combustion engine of a commercial motor vehicle is indicated by reference numeral 1. The air filter assembly 1 comprises an intake air inlet duct 2, a filter system 3 for purifying the intake air supplied by the intake air inlet duct 2 and a filtered air duct 4 for supplying filtered and dehydrated air (as indicated by the arrows 11”) from the filter system 3 to an internal combustion engine of the commercial motor vehicle (not shown).
The filter system 3 is positioned downstream of the intake air inlet duct 2 and comprises a filtration element 5 arranged in a filter housing 6,
through which filtration element 5 the intake air flows as indicated by arrows 11°.
The filtered air duct 4 is positioned downstream of the filter system
3.
As shown in Figure 1 the filter housing 6 comprises a top wall 7 and a bottom wall 8 arranged opposite the top wall 7. In the top wall 7 a top inlet opening 9 is provided to allow intake air to enter to the inside of the filter housing 6.
The intake air inlet duct 2 has an inlet duct end 10 arranged in fluid communication with the top inlet opening 9. During operation of the commercial motor vehicle intake air passes through the intake air inlet duct 2 in a swirling motion indicated by the arrows 11. Due to the swirling motion of the intake air inside the intake air inlet duct 2 moisture content (indicated by drops 12) of the intake air will be deposited on an inner wall 13 of the intake air inlet duct 2 as a result of the centrifugal force exerted thereupon.
According to the invention the air filter assembly 1 comprises a moisture accumulating and discharge element 14 upstream of the filtration element 5 and downstream of the intake air inlet duct 2 for accumulating moisture 12 deposited on the inner wall 13 of the intake air inlet duct 2.
In the embodiment shown in Figure 1 the moisture accumulating and discharge element 14 comprises an annular gutter 15 with a drainage
16. The annular gutter 15 is arranged adjacent the inlet duct end 10 and is — in the shown embodiment — connected to the inlet duct end 10. This connection can be a permanent or releasable connection. The connection preferably is a sealing connection to avoid air leakage. The annular gutter 15 has a radial annular inner wall 17 having a diameter smaller than an inner diameter of the inlet duct end 10. During operation of the commercial motor vehicle the annular gutter 15 thus can accumulate moisture dripping or seeping down of the inner wall 13 of the intake air inlet duct 2 and thegathered moisture 1s discharged (indicate by arrow 18) from the gutter 15 by means of the drainage 16, which can be formed by an aperture, a valve or the like.
As shown in Figure 1 in the embodiment of the air filter assembly 1 5 for an internal combustion engine of a commercial motor vehicle the filter housing 6 comprises an inlet stud 19 projecting from the top wall 7 and surrounding the top inlet opening 9 in the top wall 7. The annular gutter 15 is connected to the inlet stud 19, preferably in a sealing manner to avoid air leakage.
Depending on the moisture or water content in the intake air it is possible that the intake air that has passed by the moisture accumulating and discharge element 14 still comprises moisture or water as indicated by the drops 12’. This moisture can be deposited on the inner walls of the filter housing 6 and can drip or seep down therefrom on the bottom wall 8 of the filter housing 6. It is also possible that moisture is gathered in the filtration element 5 and drips from the filtration element 5 on the bottom wall 8. The moisture gathered on the bottom wall 8 can be discharged from the filter housing 6 (as indicated by arrow 21) by means of a further drainage 20 provided in the bottom wall 8 of the filter housing. The further drainage 20 can be formed by an aperture, a (vacuum) valve or the like, which is preferably positioned at the lowest point of the bottom wall 8 so that moisture gathered on the bottom wall 8 can flow towards the further drainage 20, as indicated by the arrows 22.

Claims (4)

ConclusiesConclusions 1. Een luchtfiltersamenstel voor een inwendige verbrandingsmotor van een bedrijfsvoertuig, waarbij het luchtfiltersamenstel een inlaatluchtinlaatkanaal omvat, een filtersysteem voor het zuiveren van de inlaatlucht geleverd door het inlaatluchtinlaatkanaal en een kanaal voor gefilterde lucht voor het toevoeren van gefilterde lucht van het filtersysteem naar de mwendige verbrandingsmotor, waarbij het filtersysteem stroomafwaarts van het inlaatluchtinlaatkanaal is gepositioneerd en een filterelement omvat dat in een filterhuis is aangebracht, waarbij het kanaal voor gefilterde lucht stroomafwaarts van het filtersysteem is gepositioneerd, waarbij het filterhus een bovenwand en een bodemwand die tegenover de bovenwand is aangebracht omvat, waarbij genoemde bovenwand een bovenste inlaatopening heeft, waarbij genoemd inlaatluchtinlaatkanaal een inlaatkanaaluiteinde heeft dat in fluïdumverbinding staat met de bovenste inlaatopening, waarbij het luchtfiltersamenstel verder een vochtverzamel- en -afvoerelement omvat stroomopwaarts van het filterelement en stroomafwaarts van het inlaatluchtinlaatkanaal voor het verzamelen van vocht afgezet op een binnenwand van het inlaatluchtinlaatkanaal.An air filter assembly for an internal combustion engine of a commercial vehicle, the air filter assembly comprising an inlet air inlet duct, a filter system for purifying the inlet air supplied by the inlet air inlet duct and a filtered air duct for supplying filtered air from the filter system to the internal combustion engine the filter system being positioned downstream of the inlet air inlet channel and comprising a filter element disposed in a filter housing, the filtered air channel positioned downstream of the filter system, the filter housing comprising a top wall and a bottom wall opposite the top wall, said top wall having an upper inlet opening, said inlet air inlet channel having an inlet channel end in fluid communication with the upper inlet opening, the air filter assembly further comprising a moisture collection and discharge element includes upstream of the filter element and downstream of the inlet air inlet duct for collecting moisture deposited on an inner wall of the inlet air inlet duct. 2. Het luchtfiltersamenstel voor een inwendige verbrandingsmotor van een bedrijfsvoertuig volgens conclusie 1, waarbij het vochtverzamel- en - afvoerelement een ringvormige goot omvat met een drainage, welke ringvormige goot is aangebracht nabij het inlaatkanaaluiteinde, waarbij de ringvormige goot een radiale ringvormige binnenwand heeft met een diameter kleiner dan een binnendiameter van het inlaatkanaaluiteinde.The commercial vehicle internal combustion engine air filter assembly according to claim 1, wherein the moisture collecting and draining element comprises an annular trough with a drainage, said annular trough being disposed near the inlet channel end, the annular trough having a radial annular inner wall having a diameter less than an inner diameter of the inlet duct end. 3. Het luchtfiltersamenstel voor een inwendige verbrandingsmotor van een bedrijfsvoertuig volgens conclusie 1 of 2, waarbij de ringvormige goot is verbonden met het inlaatkanaaluiteinde.The commercial vehicle internal combustion engine air filter assembly according to claim 1 or 2, wherein the annular trough is connected to the inlet duct end. 4. Het luchtfiltersamenstel voor een inwendige verbrandingsmotor van een bedrijfsvoertuig volgens conclusie 2, waarbij het huis een inlaatnop omvat die ut de bovenwand steekt en de bovenste inlaatopening omringt, en waarbij de ringvormige goot is verbonden met de inlaatnop.The commercial vehicle internal combustion engine air filter assembly of claim 2, wherein the housing comprises an inlet knob protruding from the top wall and surrounding the upper inlet opening, and wherein the annular trough is connected to the inlet knob. Bb. Het luchtfiltersamenstel voor een inwendige verbrandingsmotor van een bedrijfsvoertuig volgens één van de voorgaande conclusies, waarbij de bodemwand van het huis een verdere drainage omvat voor het afvoeren van vocht uit het huis.Bb. The commercial vehicle internal combustion engine air filter assembly of any preceding claim, wherein the bottom wall of the housing includes further drainage for draining moisture from the housing.
NL2022200A 2018-12-13 2018-12-13 Air filter assembly for an internal combustion engine of a commercial motor vehicle. NL2022200B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL2022200A NL2022200B1 (en) 2018-12-13 2018-12-13 Air filter assembly for an internal combustion engine of a commercial motor vehicle.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2022200A NL2022200B1 (en) 2018-12-13 2018-12-13 Air filter assembly for an internal combustion engine of a commercial motor vehicle.

Publications (1)

Publication Number Publication Date
NL2022200B1 true NL2022200B1 (en) 2020-07-03

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3641744A (en) 1969-07-22 1972-02-15 Farr Co Air filter for trucks
DE102012015043B3 (en) * 2012-07-31 2013-11-28 Mann + Hummel Gmbh Air suction device for internal combustion engine of e.g. lorry, has vertical line section formed modular from suction pipes, which fluidically run in parallel and are fluidically connected with inlet- and/or outlet-side ends
DE102012023856A1 (en) * 2012-12-06 2014-06-12 Mann + Hummel Gmbh Intake module of an air intake tract of an internal combustion engine
WO2014206457A1 (en) * 2013-06-26 2014-12-31 Mann+Hummel Gmbh Water separator for air intake systems of internal combustion engines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3641744A (en) 1969-07-22 1972-02-15 Farr Co Air filter for trucks
DE102012015043B3 (en) * 2012-07-31 2013-11-28 Mann + Hummel Gmbh Air suction device for internal combustion engine of e.g. lorry, has vertical line section formed modular from suction pipes, which fluidically run in parallel and are fluidically connected with inlet- and/or outlet-side ends
DE102012023856A1 (en) * 2012-12-06 2014-06-12 Mann + Hummel Gmbh Intake module of an air intake tract of an internal combustion engine
WO2014206457A1 (en) * 2013-06-26 2014-12-31 Mann+Hummel Gmbh Water separator for air intake systems of internal combustion engines

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