WO2006013047A1 - Filter for internal combustion engines, in particular diesel fuel fed - Google Patents
Filter for internal combustion engines, in particular diesel fuel fed Download PDFInfo
- Publication number
- WO2006013047A1 WO2006013047A1 PCT/EP2005/008140 EP2005008140W WO2006013047A1 WO 2006013047 A1 WO2006013047 A1 WO 2006013047A1 EP 2005008140 W EP2005008140 W EP 2005008140W WO 2006013047 A1 WO2006013047 A1 WO 2006013047A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- filter
- interspace
- diesel fuel
- casing
- fuel
- Prior art date
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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
- F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
Definitions
- the present invention relates in a general sense to a fuel filter for internal combustion engines, and in particular to a diesel fuel filter to be associated with diesel engines.
- Diesel engine fuel is known to normally contain impurities, because of which the diesel engine feed system has to be provided with a suitable fuel filter.
- Modern diesel fuel filters generally consist of a cup-shaped body closed by a cover and containing a coaxial filter cartridge generally of toroidal shape.
- the cartridge and the cup-shaped body there are defined two chambers for passage of the diesel fuel to be filtered and of the filtered diesel fuel respectively, the first connected to the pump unit and the second to the injection system.
- the chamber for passage of the diesel fuel to be filtered is normally provided by the inner region of the filter cartridge.
- diesel fuel also generally contains waxy materials, such as paraffin, which tend to thicken at relatively low temperatures, of the order of -5 0 C, until they solidify at lower temperatures, of the order of -20/25 0 C.
- waxy materials such as paraffin
- the object of the present invention is to overcome this type of drawback by providing a fuel filter formed in such a manner as to delay paraffin formation.
- the invention attains said object by virtue of the characteristics defined in the claims.
- a diesel fuel filter comprising an outer casing the interior of which is separated by a filtering baffle into two separate chambers to which a fuel inlet conduit and a fuel outlet conduit are connected respectively, at least a portion of the surface of said casing consisting of at least two walls separated by an interspace.
- Said interspace advantageously has a thermal insulating function so as to delay dispersion of the fuel heat towards the outside and hence maintain as long as possible the temperature of the fuel within the casing above the critical temperature which causes paraffin formation.
- said interspace comprises at least one layer of thermally insulating material, such as neoprene.
- the thickness of the thermally insulating layer can be between 0.5 and 10 mm, and preferably between 1 and 3 mm.
- the insulating action of the interspace is achieved by maintaining its interior under vacuum, i.e. under conditions of air absence. In this latter case, two thermally insulating spacers are used to maintain the two walls separated.
- the filter casing comprises a cup-shaped body upperly closed by a cover, the surfaces of at least one of these parts consisting of two walls separated by said interspace with a thermally insulating function.
- only the surface of the cup-shaped body comprises two walls separated by an interspace, while the cover can be formed from a thermally insulating material.
- Figure 1 is a partial axial section through a diesel fuel filter according to the invention.
- Figure 2 is the section N-Il of Figure 1.
- Figure 3 shows an enlargement of one of the surfaces of the filter casing.
- Figure 4 is a section through a variant of the invention taken perpendicular to the filter axis.
- Figure 5 shows an enlargement of one of the surfaces of the filter casing of the variant of Figure 4.
- Figure 6 shows an enlarged detail of Figure 1.
- the filter comprises a casing 1 consisting of a cup-shaped body 2 closed upperly by a cover 3.
- a gasket 8 of thermally insulating material is interposed between the rim of the cup-shaped body 2 and the cover ( Figure 6), to lie mounted on the annular edge of the cup-shaped body 2.
- other embodiments of the invention comprise means for maintaining the casing interior thermally insulated from the external environment.
- the interior of the casing 1 houses a filtering baffle 4 which divides the interior of the casing 1 into two separate chambers 5 and 6 to which a fuel inlet conduit 7 and the fuel outlet conduit 9 are connected respectively.
- said filtering baffle is in the form of a toroidal filter cartridge 40, however in other embodiments of the invention said baffle could have a different form.
- the filter cartridge 40 is supported lowerly by a plurality of lugs 10 and upperly presents a stub 41 which is inserted into a mating stub 30 branching from the lower surface of the cover 3.
- the surfaces of the cover 3 and the surfaces of the cup-shaped body 4 both present two spaced-apart walls 11 and 12 separated by an interspace 13.
- the interspace houses a layer of thermally insulating material 14 acting as an insulant.
- this layer of thermally insulating material is of neoprene and has a thickness of 2 mm.
- the presence of said layer of insulating material delays heat dispersion towards the outside of the filter, hence the fuel, in this case diesel fuel, contained in the filter requires a longer time to reach the critical temperature at which paraffins begin to form.
- Figures 4 and 5 show a variant of the first described embodiment, in which the interspace between the filter walls is maintained under vacuum.
- a plurality of spacers 15 are inserted between the walls to maintain said walls separated from each other, and which would tend to approach each other by the effect of the vacuum.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000100A ITRE20040100A1 (en) | 2004-08-03 | 2004-08-03 | FILTER FOR ENDOTHERMAL ENGINES, IN PARTICULAR DIESEL FUEL |
ITRE2004A000100 | 2004-08-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006013047A1 true WO2006013047A1 (en) | 2006-02-09 |
Family
ID=35058053
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/008140 WO2006013047A1 (en) | 2004-08-03 | 2005-07-25 | Filter for internal combustion engines, in particular diesel fuel fed |
Country Status (2)
Country | Link |
---|---|
IT (1) | ITRE20040100A1 (en) |
WO (1) | WO2006013047A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011089511A1 (en) | 2011-12-22 | 2013-06-27 | Mahle International Gmbh | Fuel filter has filter housing with filter housing pot, cover and receiving chamber for filter element, where inner wall of filter housing is partially provided with separation layer that is formed as insert made from thermoforming film |
WO2017134041A1 (en) * | 2016-02-03 | 2017-08-10 | Mahle International Gmbh | Internal combustion engine system |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8511519U1 (en) * | 1985-04-18 | 1986-07-31 | Lacrex Brevetti S.A., Orselina | Device for preheating liquids, in particular liquid fuels |
DE3540242A1 (en) * | 1985-11-13 | 1987-05-14 | Ernst Roehner | Warm air-heated diesel fuel filter |
DD260117A1 (en) * | 1987-03-11 | 1988-09-14 | Lacrex Brevetti Sa | DEVICE FOR ATTACHING FLUIDS, IN PARTICULAR FOR PREWAIVING LIQUID COMBUSTION OR FUELS |
US4866250A (en) * | 1985-04-18 | 1989-09-12 | Lacrex Brevetti Sa | Device for preheating liquid, particularly liquid fuel |
US5981910A (en) * | 1997-05-06 | 1999-11-09 | Williams; Wayne | Heated cover for a fuel filter |
-
2004
- 2004-08-03 IT IT000100A patent/ITRE20040100A1/en unknown
-
2005
- 2005-07-25 WO PCT/EP2005/008140 patent/WO2006013047A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8511519U1 (en) * | 1985-04-18 | 1986-07-31 | Lacrex Brevetti S.A., Orselina | Device for preheating liquids, in particular liquid fuels |
US4866250A (en) * | 1985-04-18 | 1989-09-12 | Lacrex Brevetti Sa | Device for preheating liquid, particularly liquid fuel |
DE3540242A1 (en) * | 1985-11-13 | 1987-05-14 | Ernst Roehner | Warm air-heated diesel fuel filter |
DD260117A1 (en) * | 1987-03-11 | 1988-09-14 | Lacrex Brevetti Sa | DEVICE FOR ATTACHING FLUIDS, IN PARTICULAR FOR PREWAIVING LIQUID COMBUSTION OR FUELS |
US5981910A (en) * | 1997-05-06 | 1999-11-09 | Williams; Wayne | Heated cover for a fuel filter |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011089511A1 (en) | 2011-12-22 | 2013-06-27 | Mahle International Gmbh | Fuel filter has filter housing with filter housing pot, cover and receiving chamber for filter element, where inner wall of filter housing is partially provided with separation layer that is formed as insert made from thermoforming film |
WO2017134041A1 (en) * | 2016-02-03 | 2017-08-10 | Mahle International Gmbh | Internal combustion engine system |
Also Published As
Publication number | Publication date |
---|---|
ITRE20040100A1 (en) | 2004-11-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9127625B2 (en) | Air filter | |
US9964078B2 (en) | Air cleaner filter assembly for motor vehicles operating in extreme weather conditions | |
US10315143B2 (en) | Method for producing a filter element provided with a sealing part | |
US8673196B2 (en) | Radial seal filter with open end pleats | |
US9440168B2 (en) | Filter device with water separator, separation zone, collection space and plural fluid passages, including dual passages within an adapter part secured upon a filter element retainer | |
US10363504B2 (en) | Filter device for filtering liquids | |
KR20000048371A (en) | Filter system | |
KR102123125B1 (en) | Flat filter element of a filter, filter and support device of a filter | |
CA1283009C (en) | Fuel feed device, particularly for diesel engines, with fuel filtering, heating and emulsifying members | |
US20150014237A1 (en) | Filter Element, Filter Device and Method | |
CN103982343B (en) | Filter element | |
WO2006013047A1 (en) | Filter for internal combustion engines, in particular diesel fuel fed | |
KR20160008471A (en) | Filter for fluid having at least one heating apparatus and method for manufacturing same | |
US20050172588A1 (en) | Particulate filter assembly | |
US20090200224A1 (en) | Combination filter for diesel fuel | |
US20120247416A1 (en) | Intake Device of an Internal Combustion Engine | |
EP2794061B1 (en) | A panel-like air filter cartridge of pleated paper with variable depth for internal combustion engines, equipped with a high-efficiency integrated channelling member | |
US20240075419A1 (en) | Filter Element for a Filter System Having a Resonator Structure, and Filter System Having a Resonator Structure | |
US10054086B2 (en) | Filter box assembly for a branched intake system | |
DE102009005550A1 (en) | Heatable liquid separator i.e. oil separator, for internal-combustion engine in vehicle, has heating element producing thermal heat that is controlled by connector through thermal conduction from heating element | |
US10662834B2 (en) | Filter for filtering liquids and filter element of such a filter | |
US20200300123A1 (en) | Turbocharger compressor housings | |
CN111206985B (en) | Vehicle charge air cooler with integrated resonator | |
US9968874B2 (en) | Fluid pump with a strainer | |
US9068537B2 (en) | Intake system including remotely located filter assemblies and method for operation of an intake system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU LV MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |