238 results about "Head gasket" patented technology

A multilayer metal gasket, such as a multilayer steel head gasket, for an internal combustion engine has upper and lower functional layers and at least one intermediate layer. At least one of these layers has a circumferential compression control feature in the form of a protrusion or groove which varies in thickness or depth, respectively, around its circumference. The variable thickness of the compression control feature enables uniform sealing pressure on the sealing surfaces of the gasket.

An embedded igniter for internal combustion engines consisting of a multiple ignition system with separate control for individual pairs of igniters that has been designed to replaces the spark plugs of internal combustion engines. This device allows for a more complete burn of the fuel/air mixture within the combustion chamber. The embedded igniter system will consist of one or more igniter units consisting of a pair of rectangular tantalum bars with iridium electrode pins at the ends. The paired igniter pins are encased in alumina ceramic, a high dielectric/high temperature housing positioned around the combustion chamber holding and insulating the electrodes relative to their position in reference to the combustion chamber. One or more igniter units may be incorporated around each cylinder opening of a head gasket made from a composite of polyamide, carbon fiber and copper or equivalent material or may be incorporated into an internal combustion engine that does not require a head gasket.

Cylinder head gasket comprising a gasket plate which has at least one metal layer with elastic properties and in which a through opening is formed which is surrounded by a bead-like embossment formed in this metal layer, wherein the bead-like embossment forms an approximately linear, self-contained sealing zone with increased sealing surface pressure when the gasket is fitted and the metal layer is provided with a first coating consisting of a plastic material which has elastic properties on its side forming this sealing zone at least in the area of this sealing zone as well as to both sides of the latter; to improve the sealing capacity of the cylinder head gasket around the said through opening, the metal layer is coated on its side provided with the first coating with a sealing bead closed upon itself, likewise surrounding the through opening and consisting of a plastic material, this bead being arranged on the side of the sealing zone facing away from the through opening as well as at a radial distance from the sealing zone in relation to the through opening, wherein the ridge of the sealing bead is at a greater distance from the metal layer supporting it than the upper side of the first coating.

An internal combustion engine is disclosed that has a cylinder block with multiple cylinders, a bridge between adjacent cylinders, a cooling slot in the bridge, and a water jacket portion in the cylinder block. A cylinder head is coupled to the cylinder block which has a first cooling passage fluidly coupling the cooling slot and the water jacket portion in the cylinder block, a water jacket portion in the cylinder head, and a second cooling passage in the cylinder head fluidly coupling the cooling slot with the water jacket portion in the cylinder head. A cylinder head gasket is arranged between the cylinder head and the cylinder block which has a first orifice in the cylinder head gasket cooperating with the first cooling passage a second orifice in the cylinder head gasket cooperating with the second cooling passage.

A multilayer metal gasket for an internal combustion engine having an integrated sensor or sensors, such as a pressure sensor. The sensor is located within a combustion cylinder opening in the gasket. Preferably, a sensor is located within each combustion cylinder opening of the gasket. The gasket may also include an integrated sensor signal conditioning module. The gasket is made by a method which includes forming the necessary sensor housings and signal line channels within the spacing layers of the gasket.

A cylinder head gasket for an internal combustion engine includes a first metal plate having first holes and first beads formed around the respective first holes, and a second metal plate disposed under the first metal plate and having a second bead extending toward the first metal plate. A distance between the first and second beads or a width of at least one of the first and second beads at a high heat load portion of the cylinder bore is formed to be greater than a distance between the first and second beads or a width of at least one of the first and second beads at a low heat load portion of the cylinder bore to thereby reduce a surface pressure at the high heat load portion.

To provide a breathing device for an internal combustion engine, wherein the structure around the check valve is simplified so that the engine as a whole can be manufactured compact, the breathing device includes a check valve (34) for fluid connecting, a crank chamber (27) and a rocker arm chamber (31) in the combustion engine. The check valve (34) is disposed in a head gasket (35) that is interposed between a cylinder block (6) and a cylinder head (7). The check valve (34) is in the form of a reed valve separate from the head gasket (35) and is supported by the head gasket (35) by means of a rivet (36).

A cylinder head gasket for an engine is provided. The gasket includes an opening positioned in a gasket substrate and arranged to align with an engine oiling circuit passage to allow oil to flow from a cylinder block through the gasket to a cylinder head. The gasket further includes a filter element attached to the gasket relative to the opening and arranged to provide a barrier to debris in the oiling circuit.

A cylinder head gasket comprises a plate, an annular groove formed to surround a combustion chamber opening formed in the plate, a metallic shim fitted into the annular groove, and a full bead located outward of the shim and projecting in the same direction as the shim. The shim is mounted on the plate by an intermittent welding. With this construction, the manufacturing cost can be reduced in comparison to the use of a conventional continuous welding or multi-layer welding. In addition, the thermal deformation of the shim and the plate itself is reduced as compared with when the continuous welding or the multi-layer welding is used, thus allowing the sealing capability to be improved. In addition, the cylinder head gasket is preferred for use in an engine of a higher combustion temperature than a combustion temperature which is allowable with the use of a shim formed of a resin material.

The invention relates to a mould head gasket for an extrusion coater, an extrusion mould head and an extrusion coater. The mould head gasket comprises a left side gasket and a right side gasket, and further comprises a distribution gasket positioned between the left side gasket and the right side gasket, wherein gasket distribution holes are separately formed between two side surfaces of the distribution gasket and the corresponding side surfaces of the corresponding side gaskets; or the mould head gasket further comprises at least two distribution gaskets positioned between the left side gasket and the right side gasket, wherein the gasket distribution holes are separately formed between opposite side surfaces of adjacent distribution gaskets, and between corresponding side surface of the distribution gasket at outer edge and the corresponding side surfaces of the corresponding side gaskets. The mould head gasket for extrusion coater provided by the invention can realize multi-amplitude continuous coating, so that zebra distribution type pole pieces with coating areas and blank areas, which are arranged in a spaced manner in a direction perpendicular to a current collector, are obtained, and the blank areas are automatically reserved for welding lug plates, and therefore, quality and production efficiency of the pole pieces are improved.

Cylinder head gasket with a metallic gasket plate comprising a combustion chamber opening enclosed by a bead, and a stopper surrounding the opening and delimiting deformation of the bead, the stopper formed by elevations of a gasket sheet metal layer which are obtained by deformation thereof, the stopper is designed such that in sections through the sheet metal layer along circular cylindrical surfaces coaxial with the opening the stopper comprises a row of discrete elevations following one another in a circumferential direction of the opening and corresponding depressions located directly opposite these elevations, and in a plan view of the sheet metal layer in the area of the stopper, the total area occupied by the elevations is at least half of the total area of the stopper, and the shape of the elevations differs from the shape of circular arcs at least partially enclosing the opening.