EP2256329B1 - Housing of air filter for IC engines and air filter incorporating said housing - Google Patents
Housing of air filter for IC engines and air filter incorporating said housing Download PDFInfo
- Publication number
- EP2256329B1 EP2256329B1 EP20100164146 EP10164146A EP2256329B1 EP 2256329 B1 EP2256329 B1 EP 2256329B1 EP 20100164146 EP20100164146 EP 20100164146 EP 10164146 A EP10164146 A EP 10164146A EP 2256329 B1 EP2256329 B1 EP 2256329B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- holding recess
- cover
- housing
- housing according
- filtering element
- 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.)
- Active
Links
- 238000001914 filtration Methods 0.000 claims description 33
- 238000007789 sealing Methods 0.000 claims description 18
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 9
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
- 230000000295 complement effect Effects 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000005549 size reduction Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
Images
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
- F02M35/0201—Housings; Casings; Frame constructions; Lids; Manufacturing or assembling thereof
- F02M35/0202—Manufacturing or assembling; Materials for air cleaner housings
- F02M35/0203—Manufacturing or assembling; Materials for air cleaner housings by using clamps, catches, locks or the like, e.g. for disposable plug-in filter cartridges
-
- 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
- F02M35/024—Air cleaners using filters, e.g. moistened
Description
- The present invention relates to a housing of air filter for internal combustion engines, and to an air filter incorporating said housing.
- As known, internal combustion engines, in particular vehicle engines, need a filter for cleaning air sucked from the outside environment and directed to the combustion chambers.
- In many cases, the air filter consists of a cartridge of filtering material, housed within a sealed housing, mainly equipped with air inlet and outlet ports and with a holding recess for the cartridge. Inside the housing, there is defined a path compelling the inflowing air to pass through the cartridge before flowing out through the outlet port. The cartridge may be made for instance of pleated paper and be of different shapes and sizes.
-
EP 1 433 947 discloses an air filter for IC engines including a housing, a cartridge equipped with a fluid-tight gasket, and air inlet and outlet ports. The cartridge is housed within the housing in a seat closed by a removable cover, which is secured to the housing by means of screws arranged along a cover edge cooperating with a corresponding edge of the housing in order to sandwich the cartridge gasket therebetween, to ensure the required fluid seal between the cartridge and the housing. -
EP 1 593 834 discloses another example of a housing for an air filter, which can be located in the upper part of the engine compartment. A seat for the filtering element communicating with air inlet and outlet ducts is provided and the housing includes a cover secured by means of screws along an abutment edge retaining the gasket for the cartridge. -
FR 2 922 269 - As known, the housings of air filters are to be designed so as to meet two requirements that not always are compatible: on the one side, the housing is to internally define an air flow path such that air flows through the cartridge, which in turn is to be sized so as to meet the needs of the engine the filter is associated with, and on the other side the housing is to fit to the conformation of the engine and the other devices associated therewith, and in particular to the available room in the engine compartment.
- The latter requirement is particularly felt in the automotive field, where component size reduction, while possibly improving the efficiency and the reliability of the same components, is a strongly felt need.
- The prior art devices are not sufficiently compact to meet the modem requirements of size reduction, and thus it is a main object of the present invention to provide a housing of air filter for internal combustion engines, which has a reduced size while maintaining a considerable filtering capacity.
- It is a further object of the invention to provide a housing of the above kind, which is cheap and easy to be manufactured so that it can be industrially produced on a large scale.
- The above and other objects are achieved by the housing and the filter according to the invention, as defined in the appended claims.
- According to a first advantageous aspect of the invention, the fluid seal between the gasket surrounding the filtering element and the mechanical fastening between the cover and the container of the housing take place in non-coplanar areas. More particularly, according to the invention, the fluid seal and the abutment between the cover and the container of the housing are defined in different planes, preferably in substantially parallel planes. Thanks to this feature, it is advantageously possible to reduce the housing thickness so that it is very close to the thickness of the filtering element only.
- Advantageously, still in accordance with the invention, thanks to the arrangement of the air ducts that extend along the walls of the holding recess for the cartridge, also the longitudinal and transversal sizes of the housing are considerably reduced. Notwithstanding this, the filter generally maintains a high filtering capacity, determined by the wide surface for passage of air towards the holding recess in which the cartridge is held and from the holding recess towards the outlet duct.
- The housing of air filter for internal combustion engines according to the invention is thus extremely thin and compact and it can be located also in engine compartments of small cars, for instance runabouts, in particular between the engine and the bonnet.
- Another advantage of the invention is the possibility of making the housing by using a reduced number of components.
- A further, but not the last, advantage of the invention is that the housing made in this manner is aesthetically appealing tanks to the provision of a substantially flat top shell, of which the shape and the size can moreover be defined at will, for instance in order to hide engine components.
- A preferred embodiment of the invention is disclosed by way of non-limiting example with reference to the accompanying drawings, in which:
-
Fig. 1 is a top perspective view of the housing according to the invention; -
Figs. 2A and2B are top and bottom exploded views, respectively, of the filter according to the invention; -
Fig. 3 is a bottom perspective view of the housing shown inFig. 1 ; -
Fig. 4 is a bottom plan view of the housing shown inFig. 1 ; -
Figs. 5 and6 are cross sectional views taken along lines V - V and VI - VI, respectively, ofFig. 4 . - Referring to
Fig. 1 , the housing of air filter for internal combustion engines according to the invention has been generally denoted byreference numeral 11 and is shown from above, i.e. substantially as it would appear when opening the bonnet of a vehicle into which the filter is incorporated according to a standard arrangement. - Turning to
Figs. 2A ,2B and3 ,housing 11 includes acontainer 13 where a holding recess 15 housing aremovable cover 31 is defined. - A
duct 19 for the dirty air, equipped with anaperture 21 for the entrance of air to be filtered, and aduct 23 for the cleaned air, equipped with anaperture 25 for the exit of the filtered air, are further defined incontainer 13. -
Container 13 further includes anupper base 27, substantially made as a shell in the illustrated example, which further preferably defines a corresponding upper portion of the walls ofducts base 27 moreover closes upwards one of the bases ofholding recess 15 and preferably it is permanently associated withcontainer 13, for instance by welding or gluing, whenhousing 11 is being made. -
Holding recess 15 is further equipped in its lower portion, i.e. on the side oppositeupper base 27, with anaperture 29 through whichremovable cover 31 can be introduced intoholding recess 15, until closing saidaperture 29. - According to the invention, holding
recess 15 has a substantially prismatic shape, preferably a parallelepiped shape with two parallel oppositeshort walls 15a and two parallel oppositelong walls 15b. - Introduction of
cover 31 intoholding recess 15 takes place according to an approach direction substantially parallel to saidside walls holding recess 15 and, in the illustrated embodiment, substantially perpendicular to the portion ofupper base 27closing holding recess 15 upwards. -
Dirty air duct 19 communicates withholding recess 15 through anaperture 20 provided along one of the side walls of said holdingrecess 15. In the illustrated example,aperture 20 is located on one of thelong side walls 15b ofholding recess 15. -
Clean air duct 23 communicates withholding recess 15 through apassageway 24 defined betweenbase 27 and the side walls ofholding recess 15. In the illustrated example, saidpassageway 24 substantially extends betweenbase 27 and twoadjacent side walls -
Cover 31 internally houses afiltering element 17, which may include a prism-shaped or, in the illustrated example, parallelepiped-shaped cartridge. In an exemplary embodiment, the cartridge may be obtained by means of a corresponding panel of pleated paper or other material with appropriate separation properties. The cartridge will be further provided with aperipheral sealing gasket 17a, preferably integrated and made of plastic material, for instance a polyurethane foam. Saidgasket 17a extends around the panel defining filteringelement 17 and projects radially outwards from the side walls of said filteringelement 17. -
Cover 31 includes a body with complementary shape to holdingrecess 15, thus substantially parallelepiped-shaped in the illustrated example, with abase 30 and two parallel oppositeshort walls 31a and two parallel oppositelong walls 31b.Walls holding recess 32, parallelepiped-shaped in the illustrated example,housing filtering element 17. - An
aperture 22 is provided on the wall ofcover 31 facingair inlet aperture 20 whencover 31 is housed inholding recess 15. In the illustrated example, saidaperture 22 is provided on one oflong walls 31b. - Said
walls peripheral edge 36 projecting radially outwards fromwalls whole cover 31. Saidedge 36 forms a corresponding abutment forcover 31, allowing the mechanical fastening ofcover 31 intoholding recess 15.Cover 31 may be fastened tocontainer 13 by means of fastening means, such as forinstance screws 33 passing through holes provided inabutment edge 36 and intended to engagecontainer 13. By removingscrews 33,cover 31 can therefore be removed fromholding recess 15, to allow replacing filteringelement 17 located insidecover 31. - Removal of
cover 31 fromholding recess 15 takes place according to a removal direction substantially parallel to saidside walls holding recess 15 and, in the illustrated embodiment, substantially perpendicular to the portion ofupper base 27closing holding recess 15 upwards. - According to the invention, the depth of
holding recess 32 is chosen so that filteringelement 17 can be received inrecess 32 by leaving the portion surrounded byperipheral gasket 17a outside, and said gasket will abut against the axially sealingfree edge 34 ofside walls cover 31. - Correspondingly, the depth of
holding recess 15 defined incontainer 13 is chosen so that, whencover 31 is introduced intoholding recess 15 andedge 36 abuts against thecorresponding abutment edge 18 ofwalls holding recess 15,gasket 17a is in contact with aperipheral sealing edge 16 projecting intoholding recess 15 and extending on a plane spaced apart frombase 27 in order to definepassageway 24 between said sealingedge 16 andbase 27. It is evident that sealingedge 16 andedge 34, being to define the fluid seal withgasket 17a, preferably extend each on a respective single plane and without interruptions. - In such a manner, by closing
cover 31 by means ofscrews 33, the flattening ofgasket 17a between sealingedge 34 and sealingedge 16 and the consequent fluid seal are determined, thereby ensuring that dirty air entering holdingrecess 15 throughaperture 20 passes throughfiltering element 17 before being exhausted throughpassageway 24. On the contrary, the closure between sealingedge 36 and sealingedge 18 needs not to be a fluid-tight one, since air possibly entering between both edges is directed towards the region where air to be filtered is present. - From the above description it will be appreciated that, according to the invention, the fluid seal between
gasket 17a surroundingfiltering element 17 and the mechanical fastening betweencover 31 andcontainer 13 take place in separate areas, more precisely non-coplanar areas. More particularly, according to the invention, the fluid seal and the abutment betweencover 31 andcontainer 13 are defined on different planes. The plane on which the mechanical fastening betweencover 31 and holdingrecess 15 occurs is indeed separate from the plane on which fluid seal is determined thanks togasket 17a. Actually, according to the invention,abutment edge 36 forfastening screws 33 lies on a plane other than that on whichgasket 17a extends. Said planes are spaced apart by a distance of the order of the thickness ofcover 31, and consequently of the order of the thickness offiltering element 17, typically a few centimetres, for instance in the range 3 to 10 cm. - As it can be better seen in
Fig. 4 ,clean air duct 23 extends over at least part of two adjacent walls of holdingrecess 15, which in the illustrated example are ashort wall 15a and along wall 15b of said holdingrecess 15 and, correspondingly, ofcover 31, and are parallel to transversal axis "T" and longitudinal axis "L", respectively. More precisely, always referring to the illustrated example, afirst section 23a ofduct 23 extends alongshort wall 15a of holdingrecess 15 and asecond section 23b extends along the adjacentlong wall 15b. Moreover,ducts walls - Moreover, according to the invention,
dirty air duct 19, besides extending over at least part of one of the walls (long wall 15b in the illustrated example), also has acorresponding section 19a extending alongbase 30 of saidcover 31. - Similarly,
clean air duct 23, besides extending along at least part of two adjacent walls of holdingrecess 15, as said above, also extends along that portion ofbase 27 defining the base of said holdingrecess 15, thereby definingpassageway 24 for clean air outflow. - Thanks to a such an arrangement of
ducts recess 15 for filteringelement 17, air flowing though filteringelement 17 housed in holdingrecess 15 can reachclean air duct 23 through a large surface, with considerable advantages for the overall filtering capacity of the filter, and yethousing 11 is kept extremely compact in particular in respect of its thickness, i.e. in the direction of vertical axis "V" (Fig. 5 ). - Always in accordance with the invention, dirty
air inlet duct 21 preferably extends along part of the samelong wall 15b of holdingrecess 15 along whichsection 23b of cleanair outlet duct 23 extends. - Advantageously, thanks to such an arrangement, the housing according to the invention is extremely compact in the direction of both longitudinal axis "L" and transversal axis "T",
- Referring to
Figs. 5 and6 , filteringelement 17 is substantially laterally surrounded bywalls cover 31. - Moreover, the thickness of
region 14 occupied by filteringelement 17 in holdingrecess 32 incover 31, which cover is in turn housed in holdingrecess 15, and consequently the thickness offiltering element 17, i.e. its extension in the vertical direction of axis "V", is lower than the overall thickness of holdingrecess 15. - Said
region 14 is positioned incover 31 at an intermediate location, always with reference to the vertical direction of axis "V", so that, whencover 31 is housed in holdingrecess 15, in said holdingrecess 15 there are defined a first portion with thickness "d1" (lower portion inFig. 5 ), associated withaperture 20 ofdirty air duct 19, a second portion with thickness "d2" (upper portion inFig. 5 ), associated withclean air passageway 24 and a third portion, orintermediate region 14, with thickness "d3", in whichfiltering element 17 is arranged. - According to the invention,
housing 11 cab be advantageously made by assembling a reduced number of components, each obtained by moulding plastic materials. - In the illustrated example,
housing 11 is substantially made of three parts, namely a single container, integrating air inlet andoutlet ducts walls recess 15, shell-shapedupper base 27 andcover 31. The single container integrating air inlet andoutlet ducts walls recess 15 is preferably permanently joined withbase 27 by welding or gluing, whereascover 31 is removably joined with the walls of holdingrecess 15. Moreover, said three parts possibly have associated therewith fittings mainly intended to contribute to noise reduction, to allow associating the housing with the air circuit and to allow fastening the housing to the engine. - Even if the invention has been disclosed with reference to a presently preferred particular embodiment, all obvious changes and modifications that will be apparent to the skilled in the art are included within the scope of the invention.
Claims (15)
- Housing (11) of air filter for internal combustion engines, comprising:- a container (13), where a holding recess (15) for a filtering element (17) is defined;- a cover (31), removably housed in said holding recess (15) and in turn arranged to house said filtering element (17);- a duct (19) for the dirty air, communicating with said holding recess (15) through an aperture (20) and equipped with an inlet aperture (21) for the air to be filtered;- a duct (23) for the cleaned air, communicating with said holding recess (15) through a passageway (24) and equipped with an outlet aperture (25) for the filtered air;- wherein said holding recess (15) is of a substantially prismatic shape and the duct (23) for the cleaned air extends over at least part of two adjacent walls (15a, 15b) of said holding recess (15);- wherein said cover (31) has side walls (31a, 31b) surrounding a holding recess (32) for the filtering element, said side walls defining a sealing edge (34) for a fluid-tight gasket (17a) for said filtering element;- wherein said cover (31) has a peripheral edge (36) projecting radially outwards from said side walls and defining an abutment edge for said cover (31), allowing the mechanical fastening of the cover (31) into the holding recess (15);- wherein said sealing edge (34) for the fluid-tight gasket (17a) and said abutment edge (36) for said cover are non coplanar.
- Housing according to claim 1, wherein said sealing edge (34) for the fluid-tight gasket (17a) and said abutment edge (36) for said cover (31) extend on respective, substantially parallel planes.
- Housing according to claim 2, wherein said sealing edge (34) for the fluid-tight gasket (17a) and said abutment edge (36) for said cover (31) extend on planes spaced apart by a distance substantially equal to the thickness of the cover (31).
- Housing according to claim 1 or 2 or 3, wherein the container (13) of the housing further includes an upper base (27) defining a corresponding upper portion of the walls of the air ducts (19, 23), and wherein said base (27) closes one of the bases of the holding recess (15) for the filtering element (17), said holding recess (15) being further equipped, on the side opposite said upper base (27), with an aperture (29) through which the removable cover (31) can be introduced into the holding recess (15), until closing said aperture (29).
- Housing according to claim 4, wherein the holding recess (15) has a substantially parallelepiped shape, and wherein the introduction of the cover (31) into the holding recess (15) takes place according to an approach direction substantially parallel to said side walls (15a, 15b) of the holding recess (15) and substantially perpendicular to the portion of the upper base (27) closing the holding recess (15).
- Housing according to any preceding claim, wherein the holding recess (15) has two parallel opposite short walls (15a) and two parallel opposite long walls (15b).
- Housing according to any preceding claim, wherein the cover (31) includes a body with complementary shape to the holding recess (15) and having a base (30) and side walls (31a, 31b), and wherein the side walls (31a, 31b) surround said holding recess (32) for the filtering element (17).
- Housing according to claims 6 and 7, wherein said cover (31) includes a substantially parallelepiped-shaped body, with two parallel opposite short walls (31a) and two parallel opposite long walls (31b).
- Housing according to any preceding claim, wherein the cover (31) is fastened to the container (13) by means of screws (33) passing through holes provided in the peripheral edge (36) projecting radially outwards from said side walls and defining an abutment edge for said cover (31), said screws being intended to engage the container (13).
- Housing according to any preceding claim, wherein the depth of said holding recess (32) in the cover (31) is chosen so that the filtering element (17) can be received in said holding recess (32) by leaving the portion surrounded by peripheral gasket (17a) outside.
- Housing according to claim 10, wherein the depth of the holding recess (15) defined in the container (13) for said cover (31) is chosen so that, when the cover (31) is introduced into the holding recess (15), the fluid-tight gasket (17a) is in contact with a peripheral sealing edge (16) projecting into the holding recess (15), so that, by closing the cover (31) by the screws (33), the flattening of the gasket (17a) between the sealing edge (34) of the cover and the sealing edge (16) of the holding recess, and the consequent fluid seal, are determined, thereby ensuring that dirty air entering the holding recess (15) passes through the filtering element (17) before being exhausted.
- Housing according to claim 11, wherein said peripheral sealing edge (16) projecting into the holding recess (15) extends on a plane spaced apart from the base (27) in order to define the air outlet passageway (24).
- Housing according to any preceding claim, wherein said cover has, on its side wall, an aperture (22) facing the air inlet aperture (20) when the cover (31) is housed in the holding recess (15).
- Housing according to any preceding claim, wherein the dirty air inlet duct (19) preferably extends over part of the same wall of the holding recess (15) over which a section of the clean air outlet duct (23) extends.
- Air filter for internal combustion engines, including a housing (11) according to any of claims 1 to 14, in which there is housed a filtering element (17) including a panel of a material with appropriate separation properties provided with a peripheral sealing gasket (17a) surrounding the filtering element (17) and projecting radially outwards from the side walls of said panel.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITTO2009A000407A IT1395646B1 (en) | 2009-05-27 | 2009-05-27 | HOUSING FOR AIR FILTER OF INTERNAL COMBUSTION ENGINES |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2256329A1 EP2256329A1 (en) | 2010-12-01 |
EP2256329B1 true EP2256329B1 (en) | 2012-05-23 |
Family
ID=41445497
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20100164146 Active EP2256329B1 (en) | 2009-05-27 | 2010-05-27 | Housing of air filter for IC engines and air filter incorporating said housing |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2256329B1 (en) |
ES (1) | ES2388247T3 (en) |
IT (1) | IT1395646B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018112115A (en) * | 2017-01-11 | 2018-07-19 | トヨタ紡織株式会社 | Air cleaner for internal combustion engine |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE948208C (en) * | 1954-09-24 | 1956-08-30 | Steyr Daimler Puch Ag | Intake noise damper, especially for light motorcycles or the like. |
US4861359A (en) * | 1989-02-10 | 1989-08-29 | Allied-Signal Inc. | Dual function air filter |
ITTO20021120A1 (en) * | 2002-12-24 | 2004-06-25 | Cornaglia G Off Met Spa | SUPPLY AIR FILTERING DEVICE FOR ONE |
BRPI0401709B1 (en) * | 2004-05-07 | 2014-02-11 | AIR FILTER ASSEMBLY MODULE | |
FR2922269B1 (en) * | 2007-10-16 | 2014-01-10 | Mark Iv Systemes Moteurs Sa | AIR FILTER DEVICE AND VEHICLE COMPRISING SUCH A DEVICE. |
-
2009
- 2009-05-27 IT ITTO2009A000407A patent/IT1395646B1/en active
-
2010
- 2010-05-27 ES ES10164146T patent/ES2388247T3/en active Active
- 2010-05-27 EP EP20100164146 patent/EP2256329B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP2256329A1 (en) | 2010-12-01 |
ES2388247T3 (en) | 2012-10-11 |
IT1395646B1 (en) | 2012-10-16 |
ITTO20090407A1 (en) | 2010-11-28 |
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