Abstract: The invention relates to a link lever of a valve train, which is rotatably mounted on a swing arm of the valve train by means of a stationary link point having an intermediate cam follower that follows a camshaft, wherein the swing arm supports a cam track that drives a valve.

Abstract: The invention relates to a link lever of a valve train, which is rotatably mounted on a swing arm of the valve train by means of a stationary link point having an intermediate cam follower that follows a camshaft, wherein the swing arm supports a cam track that drives a valve.

Abstract: A piston-type internal-combustion engine has an apparatus for shifting the crankshaft axis to vary the compression ratio. The apparatus has eccentric rings rotatably supported in the engine block. The crankshaft is eccentrically supported in the rings whereby the crankshaft axis is radially spaced from the ring axis. A setting arm, carrying a toothed element, projects from each ring. A setting shaft is rotatably supported on the engine block parallel to the crankshaft. Pinion elements are provided, each having a first pinion fixedly secured to the setting shaft and meshing with the toothed element of one of the setting arms and a second pinion rotatable relative to the first pinion and meshing with the toothed element of one of the setting arms. A resilient connecting member couples the first and second pinions to one another and resiliently resists a rotation of the first and second pinions relative to one another.

Abstract: The invention relates to a coupling element for connecting two parallel shafts which have an eccentricity, whereby the height of one shaft can be adjusted in relation to a fixed reference plane by means of movement along a rotational path parallel to the axis, whereby the diameter thereof corresponds to said eccentricity, and which is provided with two rotating bodies that are oriented on parallel planes of rotation and are respectively connected to the associated ends of both shafts in addition to being respectively provided with bearing bores at the same radial distance to the respective axis of rotation, whereby crank elements connecting both rotating bodies are mounted therein, the crank radius thereof corresponds to the eccentricity and the cranks elements are arranged in the direction of the periphery at a distance from each other.

Abstract: A piston-type internal-combustion engine has an apparatus for shifting the crankshaft axis to vary the compression ratio. The apparatus has eccentric rings rotatably supported in the engine block. The crankshaft is eccentrically supported in the rings whereby the crankshaft axis is radially spaced from the ring axis. A setting arm, carrying a toothed element, projects from each ring. A setting shaft is rotatably supported on the engine block parallel to the crankshaft. Pinion elements are provided, each having a first pinion fixedly secured to the setting shaft and meshing with the toothed element of one of the setting arms and a second pinion rotatable relative to the first pinion and meshing with the toothed element of one of the setting arms. A resilient connecting member couples the first and second pinions to one another and resiliently resists a rotation of the first and second pinions relative to one another.

Abstract: An internal combustion engine includes a plurality of cylinders defining combustion chambers each having a roof provided in the cylinder head. Each roof is composed of first and second inclined roof surfaces meeting in a ridge line. Two gas intake openings terminate in respective free edges on the first roof surface and at least one gas exhaust opening terminates in a free edge on the second roof surface. Respective gas exchange valves are seatable in the gas intake and gas exhaust openings. A fuel injection nozzle and a spark plug are supported in the cylinder head in a region of the roof. The first roof surface has, adjacent the fuel injection nozzle, a shoulder covering a terminal edge of the cylinders and extending into each combustion chamber. The shoulder has a front face transverse to the nozzle axis. The free edge of the gas intake openings intersects the ridge line.

Abstract: A setting assembly in a piston-type internal-combustion engine includes a setting device connected to a component for adjusting its position; a power device; and a gearing having an input member connected to the power device for driving the gearing by the power device, an output member connected to the setting device for driving the setting device by the gearing; a down-stepping arrangement forming part of the gearing for providing a substantially down-stepped transmission ratio between the input and output members; and a reversing arrangement for reversing the direction of motion of the output member.

Abstract: An internal-combustion engine includes a cylinder block; a plurality of cylinders arranged in line in the cylinder block; a piston accommodated for reciprocating motion in the respective cylinders; a crankshaft received in the cylinder block; a connecting rod coupling each piston with the crankshaft; and a plurality of eccentric rings surrounding and supporting the crankshaft. Each eccentric ring is rotatable about a common ring axis radially spaced from the crankshaft axis. Further, ring-supporting bearing housings are accommodated in the cylinder block for supporting the eccentric rings. A ring-turning assembly adjusts in unison the angular position of the eccentric rings to radially shift the crankshaft, whereby the upper dead center position of the pistons is altered for varying the compression ratio thereof.

Abstract: A reciprocating-piston machine includes a cylinder; a piston received in the cylinder for reciprocating motion therein; a crankshaft having a crankshaft axis and being torque-transmittingly connected to the piston; a control disk mounted on the crankshaft for rotation therewith in a plane of rotation; an elongated weight-compensating member having opposite ends and extending transversely to the crankshaft axis; a follower roller carried by the weight-compensating member and riding on a cam track of the control disk; a supporting arrangement supporting the weight-compensating member at its ends substantially coplanar with the plane of rotation of the control disk for guiding the weight-compensating member in displacements towards and away from said crankshaft; a spring arrangement included in the support arrangement for urging the weight-compensating member toward the crankshaft to press the follower roller against the cam track with a spring force; and an adjusting device for varying the spring force.