Abstract: A filter cartridge (60, 160) comprising a filter wall (63, 163) having a tubular shape and at least a support plate (61, 161) fixed to an end of the filter wall (63, 163), characterized in that a by-pass conduit (66, 166) is fashioned in the support plate (61, 161), which by-pass conduit (66, 166) is designed to place an internal volume (64, 164) delimited by the filter wall (63, 163) in communication with outside, which by-pass conduit (66, 166) is intercepted by a valve (70, 170) which is associated to the support plate (61, 161) in an out-of-center position with respect to a longitudinal axis (A, A2) of the filter wall (63, 163), the valve (70, 170) comprising an internally-hollow valve body (71, 171), which is provided with a hole (72, 172) suitable for setting the bypass conduit (66, 166) in communication with the internal cavity of the valve body (71, 171), an obturator (73, 174) housed in the internal cavity of the valve body (71, 171), and an elastically-acting element (75, 180) suitable for pressing

Abstract: A component (5) for filters (10) comprising a plate (50) provided with at least a through-opening (54) in a thickness thereof and a perimeter edge to which a seal (51) is fixed, which seal (51) is destined to be interposed between a beaker-shaped body (21) and a cover (22) of a casing (20) of a filter (10), and a flat filter wall (55) fixed to the plate (50) in such a way as to intercept the at least a through-opening (54) and a hollow shank (53) suitable for accommodating the end of a pipe (56) for removal of the water accumulated on the bottom of the beaker body (21).

Abstract: A filter cartridge (60, 160) comprising a filter wall (63, 163) having a tubular shape and at least a support plate (61, 161) fixed to an end of the filter wall (63, 163), characterised in that a by-pass conduit (66, 166) is fashioned in the support plate (61, 161), which by-pass conduit (66, 166) is designed to place an internal volume (64, 164) delimited by the filter wall (63, 163) in communication with outside, which by-pass conduit (66, 166) is intercepted by a valve (70, 170) which is associated to the support plate (61, 161) in an out-of-centre position with respect to a longitudinal axis (A, A2) of the filter wall (63, 163), the valve (17, 170) comprising an internally-hollow valve body (171, 171), which is provided with a hole (72, 172) suitable for setting the bypass conduit (66, 166) in communication with the internal cavity of the valve body (71, 171), an obturator (73, 174) housed in the internal cavity of the valve body (71, 171), and an elastically-acting element (75,180) suitable for pressing

Abstract: A component (5) for filters (10) comprising a plate (50) provided with at least a through-opening (54) in a thickness thereof and a perimeter edge to which a seal (51) is fixed, which seal (51) is destined to be interposed between a beaker-shaped body (21) and a cover (22) of a casing (20) of a filter (10), and a flat filter wall (55) fixed to the plate (50) in such a way as to intercept the at least a through-opening (54) and a hollow shank (53) suitable for accommodating the end of a pipe (56) for removal of the water accumulated on the bottom of the beaker body (21).

Abstract: For diesel internal combustion engines, an improved filter unit comprising a 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, with said unit there being associated a device for determining the degree of clogging of the filtering baffle; said device is located inside said casing and is positioned to be sensitive to the difference between the fuel pressure in said chambers.

Abstract: A filter for internal combustion engines of vehicles, comprising: an external casing (11) and an upper closing cover (12), which close an internal chamber (13) having an inlet for the liquid to be filtered and an outlet for filtered liquid; a filter cartridge (20) having a tubular filter means (21) located internally of the internal chamber (13) which separates the chamber (13) into a first zone communicating with the inlet and a second zone communicating with the outlet, and a lower plate (22) joined to a lower end of the filter means (21); the filter means being removably fixed to the casing (11) such as to remain internally of the casing when the casing is separated from the cover; the lower plate comprising hooking teeth (31), developing axially and having an elastic action in a radial direction; the base of the casing comprising a generally cylindrical surface sub -divided into a number of sectors which is equal to a number of hooking teeth (31), each sector defining a hooking zone (43) for axially const

Abstract: A filter for diesel fuel having at least an inlet conduit (4) and an outlet conduit (5) of the diesel, and being provided at least a toroidal filter element (3) inserted on and supported by a cylindrical support element (13), the filter further comprising a device for reducing dimensions of air bubbles present in the diesel fuel, wherein the device comprises at least an air conveyor chamber (10) associated to the cylindrical support element (13), wherein the air conveyor chamber (10) is provided with at least a hole (11) from which the air accumulated in the filter can exit in order to enter, in a form of small bubbles, a flow of the diesel fuel in outlet from the filter, and wherein the air conveyor chamber is defined by a bulge of the cylindrical support element (13), which protrudes towards the inside of the cylindrical support element (13).

Abstract: A filter group for diesel-powered internal combustion includes an external casing an internal volume of which is divided into two distinct chambers by a filter wall into which an inlet conduit and an outlet conduit for the fuel open, at least one heater being fitted internally of the casing, the at least one heater is housed inside a protection body and is connected to a control circuit, and at least one temperature sensor, the at least one temperature sensor being located externally of the protection body and being connected to the control circuit managing the heater device on a basis of a temperature registered by the sensor.

Abstract: Base for an internal combustion engine filter cartridge, intended to receive s a filter cartridge (3) provided with apertures for the entry of the oil to be filtered and for the exit of the filtered oil, in a respective upwardly facing matching engagement seat (2) provided with oil feed and discharge. channels to be connected to the matching channels of said cartridge, with said seat—there being peripherally associated a salient enveloping element (33) with which it forms an oil spill protection compartment, from the bottom of which there extends a recovery conduit (6) connected to a collection site and intercepted by a check valve (66), the closed or open state of which depends on whether the cartridge and seat are mutually engaged or disengaged respectively.

Abstract: A filtering septum (3) for filtration of liquids comprises at least a first layer (30), formed from a porous structure of polymer fibres, on which molecules are inserted which comprise at least a functional group having antibacterial properties.

Abstract: A combination filter (1) for diesel fuel, comprising an outer casing (2), a filter cartridge (5) dividing the interior of the casing (2) into two separate chambers (6, 7) to which an inlet conduit (3) for the diesel fuel to be filtered and an outlet conduit (4) for the filtered diesel oil are connected respectively, said cartridge (5) having a filtering capacity for the diesel fuel which is at least equal to that required by the specific application, said cartridge (5) comprising at least two filtering baffles (50, 51) associated with each other in such a manner as to be traversed in series by the diesel fuel to be filtered, that filtering baffle (50) more upstream with respect to the direction in which the diesel fuel traverses having a filtering capacity less than that required by the specific application but such as to retain the solid phase component of the diesel fuel which forms at the paraffin formation temperature.

Abstract: A device for indicating clogging of the fuel filter (1) of internal combustion engines, in particular diesel engines, the filter having an outer casing (2) closed by a cover (3) of amagnetic material, and a filter element (5) which, together with a disc (30) to which it is connected, defines two chambers (6and 7) for fuel entry and exit respectively; the device further includes a pressure sensor (10) sensing the difference between the entry and exit fuel pressure and housed inside the filter casing, and a sensor (21) for generating a signal proportional to the pressure difference which is located outside the filter casing and is not mechanically connected to the pressure sensor.

Abstract: Fuel filter for diesel engines with high pressure direct injection of common rail type and the like, comprising an outer casing provided with a fuel inlet conduit (3) and an outlet conduit (4), and containing in its interior a filter means(5), a temperature sensor(15) being positioned in proximity to the bottom of said casing to measure the temperature of the fuel present in the casing.

Abstract: A diesel fuel filter comprising an outer casing (2) which is provided at leas with an inlet conduit (40) for the diesel fuel to be filtered (A) and an outlet conduit (41) for the filtered diesel fuel (B), and houses internally at least one first filtering baffle (70) of high filtering efficiency which separates the interior of said casing (2) into two separate chambers, of which a first chamber (8) communicates with the outlet conduit (41) and a second chamber (9) communicates with the inlet conduit (40); the filter (1) also comprises a third chamber (10), which is separated from said first chamber (8) by at least one second filtering baffle (71) permeable to thickened paraffins, and is separated from said second chamber (9) by means (78) arranged to connect said second chamber (9) to said third chamber (10) when the temperature of the diesel fuel to be filtered (A) falls below a value responsible for the formation of thickened paraffins.

Abstract: A method for the realisation of a filtering separator (10) comprising a nanofibre layer (1) placed on a substrate (2) with filtering properties, said method comprising the following operating steps: enrichment of a substrate (2) having filtering properties with an electrically conductive material; prearranging a liquid polymeric substance (3nside a container (4) placed a distance from said substrate (2) and provided with a dispensing nozzle (5); application of a voltage difference between a first electrode (6), which is placed in contact with said liquid polymeric substance (3), and said enriched substrate (2), which acts as a second electrode so to create an electric field which drives a jet of liquid polymeric substance (3) exiting from said dispensing nozzle (5) towards the enriched substrate (2), to form on the same a network of solid polymeric fibres with nanometric dimensions.

Abstract: A filter (1) for diesel fuel comprising a tank (11), a filtering cartridge (2) which subdivides the inner volume of the tank (11) into two distinct chambers (50, 60), to which an input conduit (14) of the fuel to be filtered and an output conduit (15) of the filtered fuel are respectively connected, a heater (3), fed by means of electric current and adapted to melt the possible solid paraffins present in the fuel before they reach the filtering separator (21) of the cartridge (2), where said heater (3) has a porous surface (33, 34, 35) adapted to be crossed by the liquid component of the diesel fuel coming from the input conduit (14) and to hold the solid phase component, which forms at temperatures below the paraffination temperature, said porous surface (33, 34, 35) being adapted to be heated in order to liquefy said held solid component, so that it may cross said porous surface (33, 34, 35) in liquid form and reach the chamber (50) of the fuel to be filtered.

Abstract: A filtering system for the air directed towards an internal combustion engine intake, comprising a feed conduit (2) conveying the air through two separate series-disposed filtering baffles (3, 4), of which a first filtering baffle (3) retains the large-dimension solid particles carried in suspension by said air, and a second filtering baffle (4) retains the smaller-dimension solid particles which have been allowed to pass by the first filtering baffle (3); said first filtering baffle (3) being of generally elongated shape and being inserted directly into said air feed conduit (2).

Abstract: A device for indicating clogging of the fuel filter (1) of internal combustion engines, in particular diesel engines, the filter comprising an outer casing (2) closed by a cover (3) of amagnetic material, and a filter element (5) which, together with the disc (30) to which it is connected, defines two chambers (6 and 7) for fuel entry and exit respectively; said device comprises a pressure sensor means (10) sensing the difference between the entry and exit fuel pressure and housed inside the filter casing, and a means (20) for generating a signal proportional to said pressure difference which is located outside the filter casing and is not mechanically connected to the pressure sensor means.

Abstract: A system for purifying the exhaust gases emitted by an internal combustion engine (2), comprising a series-connected catalytic silencer (3) and antiparticulate filter (4) which are traversed in succession by an exhaust gas flow leaving the engine (2), said antiparticulate filter (4) being located upstream of the catalytic silencer (3) such as to be traversed by the hot exhaust gases from the engine (2) before they cool substantially.

Abstract: For diesel internal combustion engines, an improved filter unit comprising a 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, with said unit there being associated a device for determining the degree of clogging of the filtering baffle; said device is located inside said casing and is positioned to be sensitive to the difference between the fuel pressure in said chambers.