Abstract: A quick return oil cylinder liner is disclosed. The cylinder liner includes an elongated cylindrical body having an outer surface and an inner surface defining a liner central axis extending between a first liner axial end and a second liner axial end. The inner surface is configured to form a combustion chamber with a piston and an engine housing. A quick oil return part is arranged on the inner surface of the cylinder liner corresponding to a non-skirt part of the piston. The oil return part is positioned below a position of the inner surface corresponding to an oil blade of an oil ring of the piston when the piston is positioned at a bottom dead center position. The oil return part extends to the second linear axial end and forms at opening at the second liner axial end.

Abstract: An information handling system, comprising: a voltage source; a thermally regulated structure, including: a thermal fabric layer, the thermal fabric layer having a porosity; a laminate layer coupled to the thermal fabric layer, wherein a shape of the laminate layer controls the porosity of the thermal fabric layer; a temperature sensor configured to detect a first temperature of the information handling system; a thermal management controller to perform operations comprising: determining that the first temperature is above a threshold; in response, calculating a voltage to apply to the thermally regulated structure based on the first temperature; and providing a command to the voltage source to apply the voltage to the laminate layer of the thermally regulated structure to adjust a shape of the laminate layer such the porosity of the thermal fabric provides an emissivity of the thermally regulated structure to thermally radiate heat from the thermally regulated structure.

Abstract: A heat shield component includes a substrate, and a heat shield film arranged on the substrate. The heat shield film includes a first layer arranged on the substrate, including pores, and having a thermal conductivity of 0.3 W/(m·K) or less and a volumetric specific heat of 1200 kJ/(m3·K) or less, and a second layer arranged on the first layer to provide closed pores between the first layer and the second layer. The heat shield film has a surface roughness on a top surface which is 1.5 ?m Ra or less. The heat shield component can achieve high heat-insulating properties and an improved effect of reducing the emission amount of hydrocarbon in an internal combustion engine, for example.

Abstract: A component for exposure to a combustion chamber of a diesel engine and/or exhaust gas, such as a cylinder liner or valve face, is provided. The component includes a thermal barrier coating applied to a body portion formed of steel. A layer of a metal bond material can be applied first, followed by a mixture of the metal bond material and a ceramic material, optionally followed by a layer of the ceramic material. The ceramic material preferably includes at least one of ceria, ceria stabilized zirconia, yttria stabilized zirconia, calcia stabilized zirconia, magnesia stabilized zirconia, and zirconia stabilized by another oxide. The thermal barrier coating is applied by thermal spray or HVOF. The thermal barrier coating has a porosity of 2% by vol. to 25% vol., a thickness of less than 1 mm, and a thermal conductivity of less than 1.00 W/m·K.

Abstract: A vehicle internal combustion piston and method of construction thereof are provided. The piston includes piston body extending along a central longitudinal axis, having an upper combustion wall forming an upper combustion surface and an undercrown surface opposite the upper combustion surface. An annular ring belt region depends from the upper combustion surface, a pair of skirt panels depend from the ring belt region, and a pair of pin bosses depend from the undercrown surface to provide laterally spaced pin bores aligned along a pin bore axis for receipt of a wrist pin. The undercrown surface forms a central undercrown surface, and a portion of either an open outer cooling gallery, a sealed outer cooling gallery, or an outer galleryless region, wherein an insulating coating is applied to at least one of the portions of the undercrown surface.

Abstract: A steel piston for coupling to a connecting rod and wrist pin is provided. The piston includes a body with an upper crown presenting a combustion surface for exposure to a combustion chamber. The upper crown presents an undercrown surface which is openly exposed as viewed from an underside of the piston and not bounded by a cooling gallery. The body includes a ring belt and pin bosses depending from the ring belt and presenting a pin bore for receiving the wrist pin. The body also includes ribs disposed along the undercrown surface. The body includes a ratio of compression height to outer diameter (CH/D) ranging from 34.8% to 42.0%. The piston also includes a low heat transfer coating on the combustion surface, and the low heat transfer coating has a thermal conductivity of about 0.20 to 0.80 W/m·K.

Abstract: A cam treatment to reduce the friction coefficient thereof relative to a counterpart in an area provided with a hard coating made from amorphous Diamond-Like Carbon or DLC, involves disposing the cams on a support, bringing the support and the cams into a chamber placed under vacuum so as to clean the cams, bringing the support into relative movement along a trajectory of travel relative to a coating source, and taking the cams off the support before assembling them on a camshaft; the method involves disposing the cams on the support in a fixed configuration which is defined in such a way that the cams are brought successively opposite the source with orientations and at distances substantially identical relative to the source, to deposit a hard coating made from amorphous Diamond-Like Carbon or DLC, selectively on the fraction of the section of the cams that is oriented towards the source.

Abstract: An engine cylinder head includes an internal metal structure forming an upper portion of a combustion chamber. The internal metal structure includes a semi-compliant coating configured to absorb thermal expansion of the internal metal structure. The engine cylinder head also includes a polymer composite forming an external structure at least partially surrounding the internal metal structure.

Abstract: A power cylinder assembly for an internal combustion engine includes a cylinder wall that surrounds a cylinder bore that extends along an axis. A piston assembly is positioned in the cylinder bore, and the piston assembly has a combustion surface that divides the cylinder bore into a combustion chamber on one axial side of the combustion surface and a crank case on an opposite axial side of the combustion surface. The combustion surface is partially defined by a first upper surface of a first piece and partially defined by a second upper surface of a second piece. The second piece is moveable relative to the piston body during operation of the power cylinder assembly to change a compression ratio of the power cylinder assembly.

Abstract: Described herein are articles, systems and methods where a plasma resistant coating is deposited onto a surface of a chamber component using an atomic layer deposition (ALD) process. The plasma resistant coating has a stress relief layer and a rare earth metal-containing oxide layer and uniformly covers features, such as those having an aspect ratio of about 3:1 to about 300:1.

Abstract: A system, in particular a turbocharger with a barrier layer for protecting against high temperature corrosion of parts and/or components of the system or turbocharger that are subjected to high temperatures, where the barrier layer includes at least one Cr—Al—O layer.

Abstract: Any one or more members of an engine, that is, a piston, a cylinder head and a valve, has a wall face disposed face-to-face to a combustion chamber, and the wall face is coated by a heat-insulation coating film. The heat-insulation coating film includes a heat-insulative layer formed on a surface of the wall face, and an inorganic-system coated-film layer formed on a surface of the heat-insulative layer. The heat-insulative layer includes a resin, and first hollow particles buried inside the resin and exhibiting an average particle diameter being smaller than a thickness of the heat-insulative layer. The inorganic-system coated-film layer includes an inorganic compound.

Abstract: A method for manufacturing a valve spindle having a valve disc and a valve stem, the method comprising the steps of: providing a capsule, which defines at least a portion of the valve disc; arranging, in the capsule, a preformed core body that includes a core head, which constitutes an inner portion of the valve disc; arranging a preformed annular valve seat in the capsule, wherein the valve seat is arranged such that the inner circumferential side of the valve seat at least partially defines an inner space around the core head; filling the inner space with a first metallic material, forming the buffer layer, such that the core head is covered with the first material; filling the capsule with a second metallic material, forming the cladding layer; subjecting the capsule to Hot Isostatic Pressing (HIP) at a predetermined temperature, a predetermined isostatic pressure and for a predetermined time so that the preformed core body, the buffer layer, the cladding layer and the valve seat are bonded metallurgically

Abstract: An internal combustion engine includes a cylinder of which the interior is divided into two in the longitudinal direction. The lower chamber serves as a mechanical driving portion in which the piston is reciprocated. The upper chamber serves as a power portion in which combustion gas is drawn in, compressed, burned and exhausted. A cylindrical portion with a lid which moves into the power portion is continuously provided on top of the piston. A gap is defined between the cylindrical portion and the inner peripheral surface of the power portion of the cylinder. The inner peripheral surface of the power portion is defined by a heat shield tube fitted in the cylinder. A heat insulating tube is provided on the outer periphery of the heat shield tube.

Abstract: The invention relates to a doctor blade for the surface treatment of fibrous nonwoven webs, including a main body and a coating arranged on the surface of the main body, wherein the coating covers at least the part of the surface of the main body on which the doctor blade is provided for contact with the fibrous nonwoven web, and wherein the porosity of the coating is less on the first surface adjoining the main body than on the surface arranged opposite thereof.

Abstract: A device and method for preventing and removing carbon deposit build-up on a piston/cylinder assembly of an engine, including a diesel engine, is disclosed. The device includes a cylinder having an inner sleeve for receiving a piston, a carbon scraping ring positioned on the cylinder sleeve, the carbon scraping ring including an inner surface, and an abradable coating applied to the inner surface of the carbon scraping ring providing a wearable surface between the piston and the cylinder sleeve. The abradable coating has a wearable surface, which conforms to the shape created by the movement of the piston and the cylinder sleeve and carbon scraping ring, creating a substantially zero clearance fit between the piston and the carbon scraping ring. The clearance may reduce oil consumption and improve sealing of the cylinder and piston, thereby reducing blow-by.

Abstract: The present invention discloses a monoblock engine in which the head and the block of the engine are cast integrally. The engine incorporates a cylinder and water coolant jackets, intake manifold and an exhaust manifold, vertical intake and exhaust valves, core removal holes, and a push-fit type cylinder liner which is secured in place so that leakage of fuel from the cylinder is eliminated. The water coolant jackets for the head and the block are connected using four water jacket gateways or connectors. The monoblock is fitted with the crankcase using a leak proof & robust flange-joint and mechanical fastening system which is easy to install. The invention is embodied for a single cylinder engine as well as multi-cylinder engines. By integrating cylinder head and manifolds with block, the critical joint between head and block and head and intake Manifold will be eliminated. At the same time, gasket and mechanical fasteners for tightening also can be eliminated.

Abstract: There is provided a structure of a combustion chamber for an engine which enhances a thermal efficiency of the engine to enhance a fuel efficiency, and an inner wall structure of a flow path through which an intake gas or an exhaust gas of the engine flows. The structure of the combustion chamber for the engine includes a heat-insulating member 1 including a heat-insulating layer 3 formed on the surface of an engine constituting member 21 constituting the combustion chamber for the engine and a dense surface layer 2 formed on the surface of the heat-insulating layer 3. Furthermore, the heat-insulating layer 3 includes ceramic and/or glass, and has pores of pore diameters of 10 to 500 nm and a porosity of 10 to 99%, and the dense surface layer 2 includes ceramic and/or glass and has a porosity of 5% or less.

Abstract: A cylinder liner for an engine block assembly of an internal combustion engine is provided. The cylinder liner includes a liner member formed of cast iron and presenting an outer surface. A first portion of the outer surface of the liner member is machined to a reduced outside diameter. An aluminum-based material is then thermally sprayed onto the machined first portion, while a second portion of the outer surface remains uncoated. The coated cylinder liner is then placed in a mold, and another aluminum-based material is cast around the coated cylinder liner to form the engine block assembly. During the casting process, the two aluminum-based materials form a strong intermetallic bond between the liner member and the engine block.

Abstract: An internal combustion engine is presented having at least one combustion chamber, wherein a surface of at least one component of the combustion chamber and/or of an internal-combustion-engine component which is close to the combustion chamber and carries the exhaust gas stream is at least partially coated with a catalytic coating. The surface will come into contact with an air-fuel mixture or with an exhaust gas stream.

Abstract: A method of improving the combustion of a spark-ignition internal combustion engine. Such engines have at least one cylinder, each cylinder having a compression chamber and operated such that an air-fuel mixture introduced into the combustion chamber is ignited to cause a combustion event. An antenna is placed within the combustion chamber, and is used to apply electromagnetic energy to the combustion.

Abstract: An internal combustion engine in which an anodic oxidation coating film is formed on all or a portion of a wall that faces a combustion chamber, wherein the anodic oxidation coating film has a structure that is provided with a bonding region in which each of hollow cells forming the coating film is bonded to the adjacent hollow cells, and a nonbonding region in which three or more adjacent hollow cells are not bonded to each other, and wherein a porosity of the anodic oxidation coating film is determined by a first void present in the hollow cell and a second void that forms the nonbonding region.

Abstract: A cylinder liner for an internal combustion engine may include a cast iron alloy having a pearlitic structure with at least 70% of graphitization with spheroidal graphite morphology. The cast iron alloy may include at least 2.8% to 4.0% in weight of carbon; 1.8% to 3.5% in weight of silicon; 0.2% to 1.0% in weight of manganese; a maximum of 0.5% in weight of phosphorus; a maximum of 0.05% in weight of sulfur; a maximum of 0.5% in weight of vanadium; a maximum of 0.5% in weight of molybdenum; 0.2% to 1.5% in weight of nickel; a maximum of 0.3% in weight of tin; 0.005% to 0.06% in weight of magnesium.

Abstract: Disclosed is a heat-insulating structure which can be used, for example, to reduce the cooling loss of an engine. The heat-insulating structure includes a hollow particle layer made of a lot of hollow particles densely packed on a surface of a metallic base material. The hollow particle layer is covered with a coating.

Abstract: A method for improving combustion in a combustion chamber of an internal combustion engine, a heat retaining element, and an internal combustion engine are provided. The internal combustion engine includes a main combustion chamber arranged between a head and a reciprocating piston, and a heat retaining element provided between the head and the main combustion chamber. The heat retaining element is a self-supporting structure coupled to the head that is configured to reduce heat transfer from the main combustion chamber into the engine head. The heat retaining element includes a head-facing portion substantially corresponding in shape to a portion of the head facing the main combustion chamber. The heat retaining element is provided such that a gap is provided between the head-facing portion of the heat retaining element and the portion of the head facing the main combustion chamber.

Abstract: A movable wall member, in form of an exhaust valve spindle (1) or a piston (7) for an internal combustion engine, comprises a base portion (17, 20) of an alloyed steel having a carbon-content in the range from 0.15 to 0.35% by weight, and an outer portion (14, 5) forming the surface of the wall member facing a combustion chamber. The outer portion is of a hot-corrosion-resistant alloy, which is nickel-based, chromium-based or cobalt-based. At least one buffer layer (18, 21) of an alloy is located in between the base portion and the outer portion. The alloy of the buffer layer is different from the alloyed steel of the base portion and different from the hot-corrosion-resistant alloy of the outer portion. The alloy of the buffer layer comprises from 0% to at the most 0.09% C in percent by weight of the buffer layer, and that the buffer layer has a thickness of at least 1.5 mm.

Abstract: A method for preparing a surface, previously roughed in a mechanical manner and comprising sharp-edged ridges and recesses, on metal workpieces for applying a thermally sprayed layer. The roughened layer is machined by hammer or percussion brushes with a rapidly rotating hammer or percussion brush having a plurality of resilient percussion wires that are oriented in a radially outward manner, such that the edges of the ridges are broken in order to improve the adhesion of the subsequently applied thermally sprayed layer or are at least curved forming rear sections. The brush rotates at a high rotational speed of approximately 3000-6000 rotations per minute and is displaced laterally with its rotational axis being at a parallel distance that remains constant in relation to the surface of the workpiece such that percussion wires distributed on the periphery of the brush impact with the ends thereof of the surface areas adjacent to the workpiece at an oblique angle that is less than 90° in rapid succession.

Abstract: A combustion chamber for an internal combustion engine, adapted to promote induction air flow. The combustion chamber has a bulge located near an intake valve head. The bulge projects away from the piston and forms that part of the combustion chamber farthest from the piston. Slope of the walls of the bulge is greater than the angle of the head of the intake valve relative to the deck of the engine block, in engines having separate cylinder heads. The bulge is curved so as to make seamless transition with the cylinder wall at that portion away of the bulge which is distant from the intake valve.

Abstract: A cylinder head is formed by positioning a clad preform including a first and second layer in a casting die cavity with the second layer in communication with the die cavity and the first layer facing outwardly to define a combustion surface. Molten material provided to the die cavity is solidified to form a cast portion metallurgically bonded to the second layer. An aperture of the preform forms a port in fluid communication with a passage of the cast portion. A plurality of dome-shaped preforms may define the combustion chambers of a cylinder head formed by the method. The preform may define a cylinder head face. The first layer may be a steel-based layer, and the second layer and cast portion may be aluminum-based, such that the first layer and combustion surface has higher thermal fatigue strength relative to the cast portion.

Abstract: A cylinder block is provided with a cylinder bore and a thermally sprayed metallic coating disposed on an internal wall of the cylinder bore. The internal wall has first and second wall sections that are located at different axial locations along the internal wall of the cylinder bore. The thermally sprayed metallic coating is disposed on the internal wall of the cylinder bore by spraying droplets of a molten metal. The thermally sprayed metallic coating includes a first thermally sprayed coating portion having a first iron oxide concentration and a second thermally sprayed coating portion having a second iron oxide concentration. The first thermally sprayed coating portion is disposed on the first wall section. The second thermally sprayed coating portion is disposed on the second wall section. The second iron oxide concentration is different from the first iron oxide concentration.

Abstract: Combustion chamber inserts and associated methods of use and manufacture are disclosed herein. In some embodiments, a combustion chamber assembly comprises a cylinder having a cylinder wall at least partially defining a combustion chamber, an intake valve, an exhaust valve, and a piston. The intake valve has an intake valve surface exposed to the combustion chamber, the exhaust valve has an exhaust valve surface exposed to the combustion chamber, and the piston has a piston surface exposed to the combustion chamber. At least one of the cylinder wall, the intake valve surface, the exhaust valve surface, and/or the piston surface includes an insulative portion composed of a synthetic matrix characterization of crystals that is configured to retain heat in the combustion chamber that is generated from a combustion event in the combustion chamber.

Abstract: In a spark ignition engine, a thermal insulation thin layer is formed over a wall surface, facing an inside of a combustion chamber, of a base material forming the combustion chamber, and for a thermal conductivity ? [W/(m·K)], a thermal diffusivity ? [mm2/s], and a thickness L [?m] of the thermal insulation thin layer, L?16.7×? and L?207.4×(?)0.5 are satisfied. With such a configuration, a heat loss Q_total escaping from gas in a cylinder to the wall of the combustion chamber over all strokes can be reduced, and the thermal efficiency can be improved without inducing degradation of knocking due to an increase in an amount of heating Q_intake of the gas in the cylinder during an intake stroke.

Abstract: The present invention is a fuel injection method for a direct-injection internal-combustion engine, preferably of diesel type, comprising a cylinder (10) closed by a cylinder head (16), a piston (12) comprising a bowl (18), and a fuel injector (48). The method feeds the fuel into a bowl coated with a thermal insulation coating in at least two successive injections in quick succession to achieve low-temperature combustion of the fuel mixture.

Abstract: An internal combustion engine in which an anodic oxidation coating film is formed on all or a portion of a wall that faces a combustion chamber, wherein the anodic oxidation coating film has a structure that is provided with a bonding region in which each of hollow cells forming the coating film is bonded to the adjacent hollow cells, and a nonbonding region in which three or more adjacent hollow cells are not bonded to each other, and wherein a porosity of the anodic oxidation coating film is determined by a first void present in the hollow cell and a second void that forms the nonbonding region.

Abstract: 72% of all energy generated in an internal combustion engine is lost to the radiators and exhaust. Internal Combustion Energy Recovery, ICER, uses this energy by reflecting the infrared, IR, radiation from combustion to capture it with absorbing gas (to) increase cylinder pressure. This technology is adaptable to existing engine(s) as a “bolt on” modification.

Abstract: A cylinder liner includes a body formed of a metal material extending circumferentially around a center axis with an outer surface facing away from the center axis. A thermal barrier coating including an insulating material having a thermal conductivity of not greater than 5 W/(m·K) is applied to the outer surface. The thermal barrier coating is thermally applied to the outer surface at a velocity of 100 to 1,000 m/s, for example by a high velocity oxygen fuel (HVOF) spray, a plasma spray, or a detonation gun.

Abstract: The invention relates to a sliding element, in particular a piston ring, preferably made of cast iron or steel, comprising a coating having a CrN, an Me(CxNy), and a DLC layer extending from the inside to the outside, wherein the DLC layer is either metal-free or consists of a metal-containing substructure and a metal-free DLC top layer. The invention further relates to a combination of such a sliding element with an iron-based mating miming element.

Abstract: An array of ceramic tiles is arranged on a machine bearing surface. A tile matrix is bonded to the ceramic tiles that separates the ceramic tiles from one another on the machine bearing surface by a tile spacing.

Abstract: A steel piston with a piston upper part (12) with combustion chamber recess (11) and ring wall (5), and with a piston lower part (13) with piston body or piston skirt and with connecting rod bearing (8) for internal combustion engines with cylinder crankcases made of lightweight metal alloys, with at least the piston lower part consisting of a steel alloy which has a coefficient of thermal expansion in the range from 13 to 20×10?6 1/K.

Abstract: The present invention a cylinder liner which controls gap formation at the interface between the cylinder liner and a cylinder block main body for accepting the cylinder liner therein, and serves to acquire closely contacting state and enhanced bonding strength between the cylinder liner and the cylinder block main body, and to provide a cylinder block, and further to provide a process for the preparation of the cylinder liner. A plurality of circumferential grooves 15 extending in the circumferential direction is formed from a first circumferential groove 16 having a shape of “J” of the alphabet in sectional view and extending in a circumferential direction formed on an outer surface 12 of an cast iron cylinder liner 10, and a second circumferential groove 18 having a shape of “J” of the alphabet in sectional view and linking to the first circumferential groove 16.

Abstract: The invention relates to an internal combustion engine having at least one combustion chamber, wherein a surface of at least one component of the combustion chamber and/or of an internal-combustion-engine component which is close to the combustion chamber and carries the exhaust gas stream is at least partially coated with a catalytic coating, said surface coming into contact with an air-fuel mixture or with an exhaust gas stream. The invention provides that the catalytic coating has a nanostructure composed of oblong structural elements, wherein the first ends of the structural elements adhere to the coated surface and the second ends of the structural elements project into the combustion chamber or into the space which carries the exhaust gas stream. Such a coating is preferably produced according to the gas flow sputtering method or according to the magnetron sputtering method.

Abstract: An object of the present invention is to enhance the thermal efficiency of an engine, to provide a film having low thermal conductivity and low heat capacity and being free from separation, drop-off and the like and excellent in durability and reliability. According to the present invention, an engine combustion chamber structure, wherein an anodic oxide film having a thickness of from more than 20 ?m to 500 ?m and a porosity of 20% or more is formed on the inner surface of the engine combustion chamber, and a manufacturing method thereof are provided.

Abstract: In a specific embodiment of this invention, deposits and soot formation in a direct injection engine are reduced by passivating the injectors to within 0.1 mm of the injector nozzle. The fuel used with the inventive injectors comprises fuel-soluble additives.

Abstract: A cylinder liner has an upper portion and a lower portion with respect to an axial direction of the cylinder liner. A high thermal conductive film is provided on an outer circumferential surface of the upper portion. A low thermal conductive film is provided on an outer circumferential surface of the lower portion. The cylinder liner reduces temperature difference of a cylinder along its axial direction.

Abstract: A piston, a cylinder barrel or another engine component adjacent to the combustion chamber of an internal combustion engine comprises a layer or a coating facing the combustion chamber, the layer or coating comprising an aerogel. The method of manufacture of an engine component involves designing such a layer or the application of such a coating.

Abstract: A method for preparing a surface, previously roughed in a mechanical manner and comprising sharp-edged ridges and recesses, on metal workpieces for applying a thermally sprayed layer. The roughened layer is machined by hammer or percussion brushes with a rapidly rotating hammer or percussion brush having a plurality of resilient percussion wires that are oriented in a radially outward manner, such that the edges of the ridges are broken in order to improve the adhesion of the subsequently applied thermally sprayed layer or are at least curved forming rear sections. The brush rotates at a high rotational speed of approximately 3000-6000 rotations per minute and is displaced laterally with its rotational axis being at a parallel distance that remains constant in relation to the surface of the workpiece such that percussion wires distributed on the periphery of the brush impact with the ends thereof of the surface areas adjacent to the workpiece at an oblique angle that is less than 90° in rapid succession.

Abstract: In a specific embodiment of this invention, deposits and soot formation in a direct injection engine are reduced by passivating the injectors to within 0.1 mm of the injector nozzle. The fuel used with the inventive injectors comprises fuel-soluble additives.

Abstract: A combustion chamber is provided within an internal combustion engine, the combustion chamber including a cylinder head having an internal bore with an open end and a closed end, and a piston which reciprocates within the internal bore between a TDC position near the closed end and a BDC position, with a compression end facing the closed end. Poppet valves on the closed end and ports on the internal bore can control the flow of gasses into, and from, the combustion chamber. The combustion chamber is stratified when the compression end is positioned within a stratified distance of the closed end. When stratified, the combustion chamber is comprised of a central combustion region, a perimeter squish region, and a transfer passage between the regions. A direct fuel injector injects fuel into the central combustion region, mixing fuel with inducted gasses prior to combustion. The combustion chamber can be thermally insulated.

Abstract: An internal combustion engine having at least one piston cylinder comprising a housing enclosing twin gas injectors and having two inlet openings for separate supply of hydrogen gas and oxygen gas to a combustion chamber of the piston cylinder, two pressure-controlled and time-controlled, electrical inlet valves and associated nozzle needles coupled to the housing, wherein the combustion chamber has an outlet opening for ejection of a combustion product, and a thermolysis catalyst covering the combustion chamber. The thermolysis catalyst includes two hollow cylinders arranged at a distance from one another and concentrically and surrounding an intermediate space. The walls of the hollow cylinders defining the intermediate space have a metal coating for release of the heat of combustion acting on the inner hollow cylinder. The outer hollow cylinder includes an inlet opening for the supply of water, an outlet opening for the release of oxyhydrogen gas and a temperature sensor for control of water supply.

Abstract: A fuel ignition system for an internal combustion engine is disclosed. The fuel ignition system is adapted to allow a photocatalyst to ignite a mixture by using a light energy irradiated from a light generator. The fuel ignition system includes: a combustion chamber; the photocatalyst provided in the combustion chamber; and a light generator for flatly irradiating the light energy to the photocatalyst.