Abstract: The present invention relates to a flat gasket with filter elements. In order to fulfill the increased requirements with respect to cleanliness, there is an increased demand for the integration of filter elements in flat gaskets. The corresponding filter elements mainly serve for picking of impurities accrued during production as well as other residues circulate via the operational fluids, especially during the initial period of operation of an internal combustion engine or a vehicle.

Abstract: A ventilation system for a crankcase for the transport of blow-by gases from the crankcase to the intake section of an internal combustion engine with supercharger. A ventilation line reaches from the crankcase to the segment of the intake section between the supercharger and the air inlet valve. An air-oil separator is arranged in the ventilation line, as well as a return line for the return of oil separated in the air-oil separator via a tank and a tank outlet valve into the crankcase. An actuating element is arranged in or at the tank. The actuating element is charged with the pressure in the intake line behind the supercharger as working pressure and which upon sufficiently high pressure transports the oil present in the tank via the tank outlet valve into the crankcase.

Abstract: The invention relates to a valve for controlling a gas flow, as it is used, for example, for controlling the gas flow between a crankcase and an intake tract of an internal combustion engine. The invention further relates to a liquid separator and to a ventilation system for the above-mentioned exemplary use for a crankcase and to an internal combustion engine.

Abstract: A heat shield for shielding of hot areas of a combustion engine. The heat shield has at least one metal sheet layer with a first and a second surface. The at least one metal sheet layer has at least one passage opening for the passage of a fastening element. The layer also has a sleeve which passes through the passage opening. The heat shield further has a decoupling element from flexible material arranged between a circumferential edge of the passage opening and the sleeve. The decoupling element and the sleeve each have a) an annular shank area, which penetrates the passage opening, b) a first collar, which on the first surface extends radially outward relative to the circumferential edge of the passage opening, and c) a second collar, which extends adjacent to the second surface radially outward relative to the circumferential edge of the passage opening.

Abstract: The invention relates to a sealing system consisting of a first part and a second part and at least a passage opening extending in both parts, in particular a passage opening for fluids such as hot combustion gases from combustion engines as well as a corresponding metallic flat gasket such that the sealing system comprises or consists of a first part and a second part with the first part and the second part being compressed against each other at a joint contact surface and comprising at least one passage opening in the contact surface, which protrudes into the first and/or second part, an annular groove, which is delimited by the first and the second part and which encircles the passage opening, with the first and second part in the area at least radially outside of the groove come to rest one on the other.

Abstract: The application relates to a water transfer compound, preferably for use for the humidification of process gases for fuel cells, comprising:—a water-permeable and essentially gas-impermeable water transfer layer as well as—at least one thermoplastic protection layer which is water- and gas-permeable at least in sections, where—the water transfer layer and the thermoplastic protection layer overlap each other at least in sections and comprise a first and a second overlapping area, where—the water transfer layer in the first overlapping area is accessible for humid gases through the thermoplastic protection layer and the water transfer compound is thermocompressed in the second overlapping area so that the water transfer layer in the second overlapping area is not accessible for humid gases through the compressed thermoplastic protection layer.

Abstract: The application relates to a water transfer compound, preferably for use for the humidification of process gases for fuel cells, comprising: —a water-permeable and essentially gas-impermeable water transfer layer as well as—at least one thermoplastic protection layer which is water- and gas-permeable at least in sections, where—the water transfer layer and the thermoplastic protection layer overlap each other at least in sections and comprise a first and a second overlapping area, where—the water transfer layer in the first overlapping area is accessible for humid gases through the thermoplastic protection layer and the water transfer compound is thermocompressed in the second overlapping area so that the water transfer layer in the second overlapping area is not accessible for humid gases through the compressed thermoplastic protection layer.

Abstract: A mounting device with one metallic base plate, from which a plurality of mounting eyelets protrude. The mounting device is obtainable by incising a plurality of arc-shaped eyelet blanks while leaving two connection sections per eyelet blank into the surface of the base plate and production of the mounting eyelets by bending the eyelet blanks out of the base plate around a bending edge in the area of the connection sections. At least part of the eyelet blanks are arranged as groups of eyelet blanks with the latter being nested to each other. Preferably, the groups of eyelet blanks are arranged rotated relative to each other.

Abstract: The invention relates to a metallic flat gasket with at least one metallic gasket layer, which is mainly flat and shows a first and second surface, wherein a plane of the gasket runs centered between said flat areas, wherein a camber is formed within the gasket layer, which protrudes over the first surface of the gasket layer and which has a larger length than width, wherein the camber possesses a first level given by a virtual level, which runs in parallel to the plane of the gasket through the foot of the camber on the first surface of the gasket layer and a second level, given by a further virtual, which runs through the highest point of the camber and also parallel to the plane of the gasket of the gasket layer, wherein the camber possesses a slope area that ascends between the two levels. The slope area is provided with an undulating structure such that it comprises at least two waves each with a wave crest and a wave trough.

Abstract: The present invention relates to a flat gasket with filter elements. In order to fulfil the increased requirements with respect to cleanliness, there is an increased demand for the integration of filter elements in flat gaskets. The corresponding filter elements mainly serve for picking of impurities accrued during production as well as other residues circulate via the operational fluids, especially during the initial period of operation of an internal combustion engine or a vehicle.

Abstract: The present invention relates to a heat exchanger, especially oil cooler for vehicles, comprising a heat exchanging element with a first terminal plate closing the heat exchanging element on one of its sides and with at least one opening provided with a socket for inlet or release of a fluid into or from the heat exchanger element, at least a first gasket carrier plate, with a first lateral face being arranged adjacent to the first terminal plate and a second lateral face being arranged opposite to the first lateral face, at least one passage opening leading from the first to the second lateral face for taking up at least one socket of the first terminal plate, at least a first sealing element, being arranged between the first terminal plate and the first gasket carrier plate, completely encircling the circumferential edge of the at least one passage opening on the first lateral face and sealing the passage opening between the first terminal plate and the first gasket carrier plate, at least a second sealing

Abstract: The invention relates to a metallic flat gasket comprising a gasket layer (2) having at least one combustion chamber through-opening (3) which is surrounded by an elastically deformable sealing element (4) which is configured in the form of an undulatory profiling (40) in the gasket layer (2) in such a way that on each of the surfaces (21, 22) of the gasket layer (2) at least two wave crests (41) and two wave troughs (42) are present. The thickness (hyl) of the gasket layer (2) in the region of the sealing element (4), in the unloaded state, is greater than the original thickness (alpha) of the gasket layer. Apart from the undulatory profiling (40), no further sealing or support elements are present around the combustion chamber through-opening (3). The sealing element has, when subjected to linear compression of from 500 to 2,800 N/mm in a direction which is substantially perpendicular to the plane (E) of the gasket layer, a thickness which is greater by from 0.05 to 0.

Abstract: The invention relates to a metallic flat gasket (1) with at least one gasket layer (2), in which at least one through opening (3) is present, which is surrounded by a sealing area (4), in which at least one elastically deformable element (5) surrounding the through opening (3) is arranged, and an optional, at least one functional area (6) with at least one elastically deformable sealing or supporting element (7), which does not separately surround a single through-opening, where outside of the at least one sealing area (4) and the optional at least one functional area (6) on at least one of the surfaces (21, 22) of at least one of the gasket layers (2) an area is surface structured in such a way that the gasket layer (2) in this area has a thickness that is larger than the original thickness of the gasket layer (2).

Abstract: The present invention relates to a mounting device having a metallic base plate, from which multiple projections project, and a method for manufacturing this mounting device. The mounting device may be obtained by cutting multiple hook preforms into the surface of the base plate while leaving at least one bending edge per hook preform. Furthermore, hook-like projections are manufactured by bending the hook preforms out of the base plate around the bending edge and possibly lateral protrusions are manufactured on the projections or these are twisted.

Abstract: A valve for the control of a gas stream is provided with a valve housing enclosing a valve chamber. At least one pressure-sided inlet and at least one suction-sided outlet is provided with a valve opening between them to link them. An elastically movable control membrane is arranged at the valve housing which reduces or increases the flow cross section in the area of the at least one valve opening and/or opens or closes the at least one valve opening. A first device exerts a first further force on the control membrane in such a way that with an increasing pressure difference the further force exerted by the first device on the control membrane in opposite direction to the closure direction of the valve increases.

Abstract: The present invention relates to an end plate for a fuel cell stack, containing at least one channel (7) for the supply and/or removal of at least one reactant and/or a reaction product and/or a coolant, wherein at least a part at least of one pump (8) for delivering the reactants and/or reaction products and/or coolant and which is arranged in the course of the respective channel (7) is integrated into the end plate. The invention further relates to a fuel cell stack which contains such an end-plate.

Abstract: The invention relates to a mounting device (1) with one metallic base plate (2), from which a plurality of mounting eyelets (3) protrude. The mounting device (1) is obtainable by incising a plurality of arc-shaped eyelet blanks (4) while leaving two connection sections (5) per eyelet blank (4) into the surface of the base plate (2) and production of the mounting eyelets (3) by bending the eyelet blanks (4) out of the base plate (2) around a bending edge (6) in the area of the connection sections (5). At least part of the eyelet blanks (4) are arranged as groups (7) of eyelet blanks (4) with the latter being nested to each other. Preferably, the group (7) of eyelet blanks (4) are arranged rotated relative to each other. The invention further relates to a method for the production of the mounting device (1).

Abstract: The present invention relates to a bipolar plate (1) for electrochemical systems which contains a first plate (2) with a first flowfield (2a) for media distribution as well as a second plate (3) with a second flowfield (3a) for media distribution. This first plate in the region of the first flow field at least in regions comprises a plane surface section (4) from which discrete projections (5) distanced to one another project arranged in a distributed manner. Furthermore a method for manufacturing this bipolar plate is suggested as well as an electrochemical system which contains this bipolar plate. According to the invention it is possible in an inexpensive manner to manufacture a bipolar plate which permits the construction of fuel cells functioning with a low peripheral consumption (pumps, compressors) and which are safer with regard to their operation.

Abstract: The present invention relates to a contact plate for fuel cells with a coherent active area (11) on at least one side of the contact plate, wherein the active area (11) consists of a contact surface (2) which over the whole surface comprises a coating (4) of an electrically conductive, corrosion-resistant material, and of recesses (3) so that the recesses (3) form a channel structure, wherein the coating (4) furthermore at least in the bottom regions (5) of the recesses (3) is omitted. The invention further relates to a corresponding fuel cell or to a fuel cell stack with at least one such contact plate as well as to various methods for manufacturing such contact plates which may serve as bipolar plates as well as monopolar plates or end plates. With the contact plate according to the invention, one achieves an optimally reduced contact resistance with a minimal material expense for the coating (4).

Abstract: The invention relates to a metallic flat gasket with at least one metallic gasket layer, which is mainly flat and shows a first and second surface, wherein a plane of the gasket runs centered between said flat areas, wherein a camber is formed within the gasket layer, which protrudes over the first surface of the gasket layer and which has a larger length than width, wherein the camber possesses a first level given by a virtual level, which runs in parallel to the plane of the gasket through the foot of the camber on the first surface of the gasket layer and a second level, given by a further virtual, which runs through the highest point of the camber and also parallel to the plane of the gasket of the gasket layer, wherein the camber possesses a slope area that ascends between the two levels. The slope area is provided with an undulating structure such that it comprises at least two waves each with a wave crest and a wave trough.