Abstract: A heating device for an exhaust system of an internal combustion engine and having: a tubular body, where a combustion chamber is obtained on the inside; a fuel injector, which is designed to inject fuel into the combustion chamber; at least one inlet opening, which can be connected to a fan so as to receive an air flow, which is directed to the combustion chamber; a feeding channel, which receives air from the inlet opening, surrounds an end portion of the fuel injector and ends with a nozzle, which is arranged around a spray tip of the fuel injector, from which fuel flows out; and a spark plug, which is mounted through a side wall of the tubular body. An axial distance, namely measured along a longitudinal axis of the tubular body, between the spray tip of the fuel injector and a longitudinal axis of the spark plug ranges from 33% to 100% of an inner diameter of the tubular body.

Abstract: A heating device for an exhaust system of an internal combustion engine and having: a tubular body, which contains a combustion chamber and is delimited by a first base wall and by a second base wall; a fuel injector, which is mounted through the first base wall; at least one inlet opening, which can be connected to a fan so as to receive an air flow; a feeding channel, which receives air from the inlet opening, surrounds an end portion of the fuel injector and ends with a nozzle arranged around an injection point of the fuel injector; a spark plug, which is mounted through a side wall of the tubular body; and a flame holder body, which is at least partially arranged inside the feeding channel in the area of the nozzle, is coaxial to the feeding channel and to the fuel injector and is in front of the injection point of the fuel injector.

Abstract: A heating device for an exhaust system of an internal combustion engine and having: a tubular body, where a combustion chamber is obtained on the inside; a fuel injector, which injects fuel into the combustion chamber; at least one inlet opening, which can be connected to a fan so as to receive an air flow, which is directed to the combustion chamber and gets mixed with the fuel; a feeding channel, which receives air from the inlet opening, surrounds an end portion of the fuel injector and ends with a nozzle, which is arranged around an injection point of the fuel injector; and a spark plug, which is mounted through a side wall of the tubular body so as to trigger the combustion of a mixture of air and fuel. The fuel injector is configured to spray at least 80% of the fuel against an inner surface of the feeding channel.

Abstract: A heating device for an exhaust system of an internal combustion engine and having: a tubular body, which contains a combustion chamber and is delimited by a first base wall and by a second base wall; a fuel injector, which is mounted through the first base wall; at least one inlet opening, which can be connected to a fan so as to receive an air flow; a feeding channel, which receives air from the inlet opening, surrounds an end portion of the fuel injector and ends with a nozzle arranged around an injection point of the fuel injector; a spark plug, which is mounted through a side wall of the tubular body; and a flame holder body, which is at least partially arranged inside the feeding channel in the area of the nozzle, is coaxial to the feeding channel and to the fuel injector and is in front of the injection point of the fuel injector.

Abstract: A heating device for an exhaust system of an internal combustion engine and having: a tubular body, where a combustion chamber is obtained on the inside; a fuel injector, which is designed to inject fuel into the combustion chamber; at least one inlet opening, which can be connected to a fan so as to receive an air flow, which is directed to the combustion chamber; a feeding channel, which receives air from the inlet opening, surrounds an end portion of the fuel injector and ends with a nozzle, which is arranged around an injection point of the fuel injector; and a spark plug, which is mounted through a side wall of the tubular body. The feeding channel is delimited, on the outside, by an outer tubular body. The fuel injector is configured to spray at least part of the fuel against the outer tubular body, which has a through opening, through which a spray tip of the fuel injector letting out the fuel directly aims at the electrodes of the spark plug.

Abstract: A heating device for an exhaust system of an internal combustion engine and having: a tubular body, where a combustion chamber is obtained on the inside; a fuel injector, which is designed to inject fuel into the combustion chamber; at least one inlet opening, which can be connected to a fan so as to receive an air flow, which is directed to the combustion chamber; a feeding channel, which receives air from the inlet opening, surrounds an end portion of the fuel injector and ends with a nozzle, which is arranged around a spray tip of the fuel injector, from which fuel flows out; and a spark plug, which is mounted through a side wall of the tubular body. An axial distance, namely measured along a longitudinal axis of the tubular body, between the spray tip of the fuel injector and a longitudinal axis of the spark plug ranges from 33% to 100% of an inner diameter of the tubular body.

Abstract: A heating device for an exhaust system of an internal combustion engine and having: a tubular body, where a combustion chamber is obtained on the inside; a fuel injector, which is designed to inject fuel into the combustion chamber; at least one inlet opening, which can be connected to a fan so as to receive an air flow, which is directed to the combustion chamber; a feeding channel, which receives air from the inlet opening, surrounds an end portion of the fuel injector and ends with a nozzle, which is arranged around an injection point of the fuel injector; and a spark plug, which is mounted through a side wall of the tubular body. The feeding channel is delimited, on the outside, by an outer tubular body. The fuel injector is configured to spray at least part of the fuel against the outer tubular body, which has a through opening, through which a spray tip of the fuel injector letting out the fuel directly aims at the electrodes of the spark plug.

Abstract: A heating device for an exhaust system of an internal combustion engine and having: a tubular body, where a combustion chamber is obtained on the inside; a fuel injector, which injects fuel into the combustion chamber; at least one inlet opening, which can be connected to a fan so as to receive an air flow, which is directed to the combustion chamber and gets mixed with the fuel; a feeding channel, which receives air from the inlet opening, surrounds an end portion of the fuel injector and ends with a nozzle, which is arranged around an injection point of the fuel injector; and a spark plug, which is mounted through a side wall of the tubular body so as to trigger the combustion of a mixture of air and fuel. The fuel injector is configured to spray at least 80% of the fuel against an inner surface of the feeding channel.

Abstract: A heating device for an exhaust system of an internal combustion engine; the heating device has: a first tubular body wherein a combustion chamber is obtained; a fuel injector to inject fuel into the combustion chamber; an inlet opening, which is obtained through the first tubular body and can be connected to a fan to receive an air flow, which is directed into the combustion chamber; a hot air outlet opening to let hot air out of the combustion chamber; an outlet duct, which originates from the outlet opening; a spark plug which is mounted through a side wall of the first tubular body to trigger the combustion of a mixture of air and fuel; and a labyrinth, which surrounds a side wall of the tubular body, starts from the inlet opening, ends in the combustion chamber, and the air must necessarily flow out of the inlet opening until reaching the combustion chamber.

Abstract: An exhaust gas treatment device for an exhaust system of an internal combustion engine; the treatment device is provided with: a tubular duct, which is delimited by a first tubular side wall and has a first exhaust gas inlet opening, a first exhaust gas outlet opening, and an injection opening; and a mixing body, which is arranged inside the tubular duct, is hollow on the inside so that the exhaust gases can flow through it, and has a first perforated base wall with a circular shape, which faces the first outlet opening, a second base wall with a partially circular shape, which faces the first inlet opening, and a second tubular side wall, which joins the first base wall to the second base wall and has a second inlet opening leading into the mixing body.

Abstract: An exhaust gas treatment device for an exhaust system of an internal combustion engine; the treatment device is provided with: a tubular duct, which is delimited by a first tubular side wall and has a first exhaust gas inlet opening, a first exhaust gas outlet opening, and an injection opening; and a mixing body, which is arranged inside the tubular duct, is hollow on the inside so that the exhaust gases can flow through it, and has a first perforated base wall with a circular shape, which faces the first outlet opening, a second base wall with a partially circular shape, which faces the first inlet opening, and a second tubular side wall, which joins the first base wall to the second base wall and has a second inlet opening leading into the mixing body. Main figure: FIG.

Abstract: Thermoelectric generator for an exhaust system of an internal combustion engine having: at least one feeding element provided with a duct, which is adapted to be flown through by the exhaust gases and has at least one first heat exchange wall, a front wall, which is perpendicular to the duct and has a central inlet opening and a rear wall, which is perpendicular to the duct and has a central outlet opening; at least one cooling element having at least one second heat exchange wall; and at least one thermoelectric cell, which is interposed between the duct and the cooling element and has a hot side resting against the first heat exchange wall and a cold side resting against the second heat exchange wall.

Abstract: A generator of electric energy based on a thermoelectric effect includes a layer of thermoelectric material set between two pipes that guide two flows of fluid at temperatures different from one another. Each of the pipes has its wall in heat-conduction contact with respective side of the layer of thermoelectric material. Each pipe has a cavity of passage for the respective flow of fluid occupied by a porous material or divided by diaphragms into a plurality of sub-channels so as to obtain a large heat-exchange surface between each flow of fluid and the wall of the respective pipe and between said wall and the respective side of the layer of thermoelectric material.

Abstract: An apparatus is described that converts electromagnetic radiation into electric current, of the type comprising a plurality of junctions between a first element (11; 111) of material with conduction through carriers of positive charge and a second element (12; 112) of a material with conduction through carriers of negative charge, said plurality of junctions defining a plurality of couples (10; 111, 112) comprising a hot junction (19) and a cold junction (18), said plurality of couples (10; 110) receiving a thermal flow (FT) generated by a radiation (R) incident in the direction of a region (172) including the hot junction (19), said apparatus (20; 30; 70; 170; 190) including a device (25; 75; 175) to guide said radiation (R) towards said plurality of couples (10; 111, 112).

Abstract: An emitter (F) for incandescent light sources, in particular a filament, capable of being brought to incandescence by the passage of electric current is obtained in such a way as to have a value of spectral absorption ? that is high in the visible region of the spectrum and low in the infrared region of the spectrum, said absorption ? being defined as ?=1????, where ? is the spectral reflectance and ? is the spectral transmittance of the emitter.

Abstract: A process for manufacturing an electroluminescent device comprising the steps of: making an organic or inorganic templating frame, comprising monodispersed nanoelements, in particular nanospheres; providing said nanoelements with a sheath consisting of metal nanoparticles, each nanoelement with its sheath of metal nanoparticles forming a core shell. The core shells are assembled together so as to make the three-dimensional percolated layer, having cavities whose size is around wavelength.

Abstract: A light emitting device comprises a substrate, a porous alumina layer having a regular series of cavities of nanometric size containing an emitting material, and two electrodes in contact with the emitting material and connected to an electric voltage source. The first electrode comprises at least part of an aluminum film deposited onto the substrate, on which the alumina layer has been previously grown through an anodization process.

Abstract: A generator of electric energy based on a thermoelectric effect includes a layer of thermoelectric material set between two pipes that guide two flows of fluid at temperatures different from one another. Each of the pipes has its wall in heat-conduction contact with respective side of the layer of thermoelectric material. Each pipe has a cavity of passage for the respective flow of fluid occupied by a porous material or divided by diaphragms into a plurality of sub-channels so as to obtain a large heat-exchange surface between each flow of fluid and the wall of the respective pipe and between said wall and the respective side of the layer of thermoelectric material.

Abstract: A light emitting device comprises a substrate, a porous alumina layer having a regular series of cavities of nanometric size containing an emitting material, and two electrodes in contact with the emitting material and connected to an electric voltage source. The first electrode comprises at least part of an aluminum film deposited onto the substrate, on which the alumina layer has been previously grown through an anodization process.

Abstract: In a process to make an emitter (10) for light sources, which can be led to incandescence through the passage of electric current, a layer made of anodized porous alumina (1) is used as sacrificial element for the structuring of at least a part of the emitter (10).