Abstract: A valve gear mechanism for an internal combustion engine includes a variable valve control mechanism comprising a shaft (1) having an axis of rotation (D); a rotating body (10) being rotatably supported on said shaft (1); and an intermediate member (20) surrounding said shaft (1) and being disposed adjacent to said rotatable rotating body (10) in an axial direction and being rotatable with respect to said shaft (1) and having a drive connection to said shaft (1) via a first sliding guide (15) and a first transmission element (40, 50) and to said rotating body (10) via a second sliding guide (16) and a second transmission element (70), wherein between said rotating body (10) and said intermediate member (20) there is provided a third sliding guide (30) constituting a support between said rotating body (10) and said intermediate member (20) and, at the same time, allowing a relative movement between said rotating body (10) and said intermediate member (20) in a direction perpendicular to said axis of rotation (

Abstract: An internal combustion engine with a device for cyclically varying the speed of rotation of a cam for gas exchange control comprises a shaft (1) and an axis of rotation (5), a rotary body (2) rotatably supported on said shaft (1), wherein the speed of rotation of the rotary body (2) corresponds to the speed of rotation of the cam, and an intermediate member (4) rotatably supported in a plane perpendicular to said axis of rotation (5) of said shaft (1), wherein said rotary body (2) is rotated cyclically in relation to said shaft (1) if the axis of rotation of the intermediate member (4) is staggered in relation to the axis of rotation (5) of the shaft (1). The intermediate member (4) is rotatably supported on an outer eccentric element (40) which is rotatably supported on an eccentric seat (32) of an inner eccentric element (30).

Abstract: A valve gear mechanism for an internal combustion engine includes a variable valve control mechanism comprising a shaft (1) having an axis of rotation (D) and serving to transmit the rotary motion to the valve gear mechanism; a rotating body (10) being rotatably supported on said shaft (1); and an intermediate member (20) surrounding said shaft (1) and being disposed adjacent to said rotatable rotating body (10) in an axial direction and being rotatable with respect to said shaft (1) and having a drive connection to said shaft (1) via a first sliding guide (15) and a first transmission element (40, 50) and to said rotating body (10) via a second sliding guide (16) and a second transmission element (70), wherein said first transmission element (40, 50) comprises a radial pin (40) being inserted in said shaft (1) in a direction substantially vertical to said axis of rotation (D).

Abstract: In an internal-combustion engine, the light-metal cylinder head 1 is bolted together with the cylinder crankcase 2 by means of bolts 9, which extend in each case through a bore hole 10 in the cylinder head 1 and are bolted into a threaded borehole 11 in the cylinder crankcase 2. In order to keep the surface pressure, when the cylinder head bolts are tightened, at a level permissible for the light-metal alloy of the cylinder head 1 without using shims that require much space, a threaded sleeve 15 of steel, on the face 17 of which the head of the cylinder head bolt 9 is lying, is screwed into the borehole 10. The bearing surface for the force of the bolt is formed by the areas of the edges of the thread of the threaded sleeve 15. Accordingly, a sufficient area can be made available by an appropriate number of threads without the need to have the external diameter of the threaded sleeve 15 larger than the external diameter of the bolt head 12, 13.

Abstract: A cast iron camshaft (1) for an internal combustion engine, has at one end a toothed pulley (3) engaging a toothed belt, and an internal tensile member including a screw threaded bolt (5). The bolt engages part of the camshaft (1) adjacent the end where the toothed pulley (3) is fixed, and extends along a longitudinal bore (6), and has a screw threaded end (8) which engages an internal thread (9) positioned adjacent the point where the bending moment exerted on the camshaft by the toothed belt tension P becomes zero. As a result, the alternating bending loads which would otherwise occur in the vicinity of the cross-section X--X which is in danger, are converted into a continuous compressive load, which can be sustained by the cast iron material more effectively than an alternating bending load.

Abstract: In an internal combustion engine, the cylinder head 1 is screw-fastened to the cylinder crank case 2 by means of differential screws 8, each of which has two threaded sections 11 and 12, of which section 11 has a larger outside diameter and a smaller pitch than the second section 12. The threaded sections 11 and 12 cooperate with corresponding internal threads 13 or 10 in the cylinder head 1 or in the cylinder crank case 2. As a result of the different pitches of the two threaded sections 11 and 12, there occurs a joint tensioning of the cylinder head 1 with the cylinder crank case 2, without a bearing surface for a screw head or a nut being required. The space requirement for the cylinder head fastening thereby becomes exceptionally small, so that the fastening can be provided at points, for example, between adjacent valves, at which no space would otherwise be available for a bearing surface for screw heads or nuts.

Abstract: An exhaust gas turbo-supercharger for a vehicle engine, which is connected via engine mounting to the chassis of the vehicle and is provided with an exhaust gas turbo-supercharger. The supercharger has a bearing housing 1 which is provided with lubricant and coolant passages 5 and 6 or 8 and 9, and which is designed to form an engine mounting. The housing is connected to the vehicle chassis 21 by an elastic bearing 20, and is flange-mounted to a surface 11 of the cylinder crank case 12. The lubricant and coolant passages 5 and 6 or 8 and 9 open in the abutment surface 10 of the bearing housing 1 against the cylinder crank case 12 and are in communication with the lubricant and coolant circuit 14 and 15 or 16 and 17 of the engine.

Abstract: In a fluid-cooled cylinder head for a series of cylinders of a multi-cylinder internal combustion engine provided with a combustion chamber for each cylinder, the cooling water chambers co-ordinated with the individual combustion chambers are separated from each other, so that individual small casting cores can be used instead of a large casting core forming all the cooling water chambers of the cylinder head. The appropriate number of small casting cores can be inserted into the mould according to the number of cylinders, so that cylinder heads for cylinder blocks with different numbers of cylinders can be manufactured, using several casting cores. The cooling water chamber for each combustion chamber is so designed that a single unipart casting core can be used, which is so shaped that the cooling water is directed against the wall of the combustion chamber and against the sparking plug dome.

Abstract: In a suction pipe installation for multicylinder internal combustion engine with a collector suction pipe, a suction distributor is connected therewith. Adjacently disposed individual suction pipes form a unitary unit with the collector suction pipe. The individual suction pipes extend from the flanges a curve of more than 90.degree. to connecting flanges. The collector suction pipe 1 is mounted in the chamber enclosed by the individual suction pipes, so that it does not require any additional space. A quiet airflow is formed in the straight line segment of the collection suction pipe 1, and in which an air amount meter 18 for a fuel injection installation is installed.