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: 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: An air filter group for motor vehicles includes a box body, provided with at least an air inlet opening and an air outlet opening, and further includes a filter element configured to be located internally of the box body, in which the air outlet opening is configured such as to receive the filter element from the outside of the box body, and in that the filter element includes a seal on an end side thereof. The seal being provided with a border configured to be at least partially rested on the edge of the air outlet opening and being such as to enable fastening the filter element to the box body, the filter element being maintained in position by compression directly by the conveyor of the clean air outlet.

Abstract: A fuel filter, in particular for Diesel engine fuel, comprising a closed casing, the internal volume of which comprises at least a first chamber, connected to an inlet for the fuel to be filtered, and a second chamber connected to an outlet for the filtered fuel. A filter screen and a hydrophobic mesh are positioned between the first chamber and the second chamber, and the filter screen is removably fitted to the filter, independently of the hydrophobic mesh.

Abstract: For diesel internal combustion engines, an improved filter unit 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, with said casing there being associated a device provided with sensors for measuring certain characteristic parameters for correct engine operation.

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 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.

Abstract: Double acting fuel filter unit comprising a first pre-filter (14) and a second fine filter element (140) connected in series by suitable conduits, wherein said first and second element are supported by the lower and upper opposing sides respectively of a single block (1) within which there are positioned: a pump (23, 24, 25) for priming the pre-filter with fuel, a first conduit (3) which connects the lower side of the block to the fuel tank, a second conduit (4) and a third conduit (6) which connect the upper side of the block to the compartment (2) of the priming pump (23, 24, 25), a fourth conduit (7) which connects the upper side of the block to the engine feed conduit, and a fifth conduit (70) which connects the upper surface of the block to the lateral surface thereof; to the lower surface of the block there being fixed a cup casing containing the pre-filter (14), and within which there open said first and second conduit upstream and downstream of the pre-filter 14 respectively; to the upper side of the

Abstract: Filter for internal combustion engine liquids, comprising a casing (2) closed by a removable cover (4) and containing a toroidal filter cartridge (3) which separates the casing cavity into two chambers (21, 22) for passage of the liquid to be filtered and passage of the filtered liquid respectively, in which the inner region of the cover is connected to the facing end of the cartridge by a snap connection system comprising two complementary parts (10, 111) which are associated with the cover and with the cartridge respectively, and can be connected together by axially sliding said cartridge and released from each other by rotating this latter through a predetermined angle, that part of the system associated with the cartridge being located within the central compartment of this latter, and that part of the system associated with the cover being dimensioned and shaped to be able to be inserted into the preceding and coupled thereto, where it retains the facing end of the cartridge in the immediate vicinity of

Abstract: For diesel internal combustion engines, an improved filter unit 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, with said casing there being associated a device provided with sensors for measuring certain characteristic parameters for correct engine operation.

Abstract: A fuel filter (1) with antifreeze device comprising an outer casing (2), the interior (24) of which is separated by a filtering baffle (5) into two separate chambers (25, 26) to which a fuel inlet conduit (3) and a fuel outlet conduit (4) are connected respectively; said filter (1) comprises a device (6) for generating pressure waves within the casing (2), such that said pressure waves propagate at least through the fuel contained in the interior (24), so increasing its kinetic energy.