Abstract: A cylinder head cover for a cylinder head of a piston engine may include a cover body for mounting on the cylinder head. The cover body may include a cover body section and a first longitudinal side edge disposed opposite a second longitudinal side edge. An outer cover seal may seal off the cover body from the cylinder head and extend completely around along an outer edge of the cover body. A securing bridge may be fitted over the cover body on an outer side along the cover body section from the first longitudinal side edge of the cover body to the second longitudinal side edge.

Abstract: A cylinder head cover for a cylinder head of a piston engine may include a cover body for mounting on the cylinder head. The cover body may include a cover body section and a first longitudinal side edge disposed opposite a second longitudinal side edge. An outer cover seal may seal off the cover body from the cylinder head and extend completely around along an outer edge of the cover body. A securing bridge may be fitted over the cover body on an outer side along the cover body section from the first longitudinal side edge of the cover body to the second longitudinal side edge.

Abstract: The invention relates to a method which uses an injection mold for the production of an intake system which is composed of plastic and is intended for internal combustion engines, and which has a plurality of parallel-running intake pipes and which has, arranged in the intake pipes, throttle flaps operated by way of a shared shaft bearing against bearings located in the walls of the intake pipe. A simplified production process is obtained if two mandrels (1, 2) of the injection mold, intended for formation of apertures for the bearings, are inserted respectively from one side of the injection mold in such a way that ends of the mandrels (1, 2) bear against one another in the injection mold, and if the method of production of apertures situated further outwards, with respectively greater diameter than the adjacent inwardly situated apertures is such that each mandrel (1, 2) is of staged shape, and the mandrels (1, 2) are drawn out during demolding at the two sides of the injection mold.

Abstract: The invention relates to a method which uses an injection mould for the production of an intake system which is composed of plastic and is intended for internal combustion engines, and which has a plurality of parallel-running intake pipes and which has, arranged in the intake pipes, throttle flaps operated by way of a shared shaft bearing against bearings located in the walls of the intake pipe. A simplified production process is obtained if two mandrels (1, 2) of the injection mould, intended for formation of apertures for the bearings, are inserted respectively from one side of the injection mould in such a way that ends of the mandrels (1, 2) bear against one another in the injection mould, and if the method of production of apertures situated further outwards, with respectively greater diameter than the adjacent inwardly situated apertures is such that each mandrel (1, 2) is of staged shape, and the mandrels (1, 2) are drawn out during demoulding at the two sides of the injection mould.

Abstract: The present invention relates to a method for the production of flap mechanisms in air distribution pipes of combustion engines, wherein the flap mechanisms essentially comprise a frame and a flap rotatably mounted within the frame. To fulfill the demands in regard to the tolerances of the components, the frame and the flap is molded with an injection molding tool out of the same material, such that the flap is placed securely into the frame after the injection molding process. In a further operation, bearings are inserted between frame and bearings.

Abstract: In this air induction module, the induction pipe has two separate induction pipe bodies (1, 2) with induction pipe sections that, together, form the induction pipes. The second induction pipe body (2), which can be attached to the cylinder head of the combustion engine, contains, in its induction pipe sections, a pulse charging valve (3) with an associated actuator. In addition to the pulse charging valves, the control electronics thereof can be integrated in the air induction module.

Abstract: In this air induction module, the induction pipe has two separate induction pipe bodies (1, 2) with induction pipe sections that, together, form the induction pipes. The second induction pipe body (2), which can be attached to the cylinder head of the combustion engine, contains, in its induction pipe sections, a pulse charging valve (3) with an associated actuator. In addition to the pulse charging valves, the control electronics thereof can be integrated in the air induction module.

Abstract: The invention relates to a suction device for an internal combustion engine provided with a first manifold (1) having a slot (3). A first suction line (5) is extended from an input orifice (7) which enters the first manifold (1) to an output orifice (9) which connects the first suction line (5) to the suction line of a cylinder head of the internal combustion engine. The inventive device also comprises a second suction line (11) and a second manifold (13) provided with a second slot (15) which are orientable and interconnectable. When the second suction line is in the first pivoting position, intake air passes through the first slot (3) to the first manifold (1) and afterwards, flows to the first suction line (5).

Abstract: The invention relates to a suction device for an internal combustion engine provided with a first manifold (1) having a slot (3). A first suction line (5) is extended from an input orifice (7) which enters the first manifold (1) to an output orifice (9) which connects the first suction line (5) to the suction line of a cylinder head of the internal combustion engine. The inventive device also comprises a second suction line (11) and a second manifold (13) provided with a second slot (15) which are orientable and interconnectable. When the second suction line is in the first pivoting position, intake air passes through the first slot (3) to the first manifold (1) and afterwards, flows to the first suction line (5).

Abstract: A butterfly valve unit is provided comprising a housing having a connecting sleeve. The sleeve of the unit is configured to accommodate a shaft with a butterfly valve attached thereto. The unit further comprises a fixing device in order to attach the unit to an intake module having a lateral recess. The connecting sleeve is configured to be inserted into the recess of the module in the area corresponding to a butterfly valve pipe section of the intake module.

Abstract: To form undercut grooves in a work piece, especially to retain turbine rotor blades, in a first step, the grooves are cut such that the flanks of the grooves have a preliminarily desired shape; then, in a second step, a bell-type countersink is moved radially to cut the desired shape of the flanks of the groove. Countersink cutters for the second step include a plurality of groups of cutting bits or inserts secured to posts on a shell, or bell-type countersink, in accordance with the profile to be cut.

Abstract: A cutting bit formed as a round plate for a material removal tool has a base body, which is defined by a bottom face, a top opposite it and spaced apart from it, and a side face between them. The side face, with a chip face located on the top, defines a circular cutting edge. For securing the bit, a central opening which can receive a securing screw, for instance, is provided. To secure the cutting bit in a tool body in a manner fixed against relative rotation, a plurality of depressions, for instance, are provided on the top of the cutting bit and can be engaged by a clamping claw supported on the tool body. Circumferential forces engaging the cutting bit are diverted by way of these depressions, thus preventing torsion or twisting of the cutting bit.

Abstract: To support an indexable cutting insert (6a) cutting with an end edge and facing edge (7a) as well as circumferentially, with respect to both axially acting forces as well as radially acting forces, the tool body (1) is formed with an abutment surface (17) to accept radially directed forces against which the insert can be clamped; to accept axially directed forces, a holding screw (25) passing through an opening (22, 23) in the insert is formed with an accurately machined portion (28) fitting into an accurately machined portion (29) of a reception bore (27) for the screw, so that the holding screw, itself, acts as an accurately placed axial support for the insert (6a).

Abstract: To permit resharpening of cutter blades of a helical milling cutter, the cutter blades or bits of a multi-bit cutter have decreasing thickness, and are placed in grooves having the same helix radius, but the centers of the helical axes offset from the center of rotation of the cylindrical cutter body in the direction towards the associated groove, so that cutter blades of lesser thickness are still seated firmly in the bottom of the respective groove. Upon dulling of the cutters, the thinnest one of the cutter blades is discarded, the thickest one only replaced and the worn blades moved up one step along the circumference of the body into grooves which are progressively more shallow, to compensate for decrease in thickness of the respective cutter bits upon regrinding to resharpen the bits.