Abstract: A switching valve for an internal combustion engine, which has an adjustable compression ratio, namely to control a hydraulic oil flow particularly for an eccentric adjustment mechanism, having a control piston, which can be shifted by a switching mechanism similar to a ballpoint pen mechanism, wherein the control piston controls the hydraulic oil flow dependent on the switch position thereof, wherein the switching mechanism comprises at least one actuation element and a detent element, and wherein at least the control piston, the actuation element and the detent element are nested in each other so that they are implemented in a concentrically overlapping manner, at least in sections, when viewed in the shifting direction of the control piston.

Abstract: A connecting rod for an internal combustion engine having an adjustable length between a first connecting rod eye and a second connecting rod eye. An eccentric member having a bearing bore which is positioned eccentrically to an outer diameter is rotated to adjust the length. The eccentric member is rotated by a rack and pinion drive and a double acting hydraulic cylinder.

Abstract: A reciprocating-piston internal combustion engine having a hydraulic adjustment mechanism which is assigned to a connecting rod and which comprises at least one eccentric, for adjusting at least one variable compression ratio in at least one cylinder of the reciprocating-piston internal combustion engine by means of a change in an effective length of a connecting rod. Also proposed is a method for changing the effective length of a connecting rod.

Abstract: A connecting rod for an internal combustion engine having an adjustable length between a first connecting rod eye and a second connecting rod eye. An eccentric member having a bearing bore which is positioned eccentrically to an outer diameter is rotated to adjust the length. The eccentric member is rotated by a rack and pinion drive and a double acting hydraulic cylinder.

Abstract: A switching valve for an internal combustion engine, which has an adjustable compression ratio, namely to control a hydraulic oil flow particularly for an eccentric adjustment mechanism, having a control piston, which can be shifted by a switching mechanism similar to a ballpoint pen mechanism, wherein the control piston controls the hydraulic oil flow dependent on the switch position thereof, wherein the switching mechanism comprises at least one actuation element and a detent element, and wherein at least the control piston, the actuation element and the detent element are nested in each other so that they are implemented in a concentrically overlapping manner, at least in sections, when viewed in the shifting direction of the control piston.

Abstract: A reciprocating-piston internal combustion engine having a hydraulic adjustment mechanism which is assigned to a connecting rod and which comprises at least one eccentric, for adjusting at least one variable compression ratio in at least one cylinder of the reciprocating-piston internal combustion engine by means of a change in an effective length of a connecting rod. Also proposed is a method for changing the effective length of a connecting rod.

Abstract: The invention relates to a reciprocating-piston internal combustion engine with variable compression, having an actuating unit for changing a variable compression of the reciprocating-piston internal combustion engine, wherein, to change the variable compression, the actuating unit actuates a variable engine component of the reciprocating piston internal combustion engine in the form of a connecting rod with variable length, a piston with variable compression height and/or a crankshaft with variable crankshaft radius, and the actuating unit is arranged at a lower level than the reciprocating-piston internal combustion engine. Also proposed are a method and also an actuating unit for the same.

Abstract: The present invention relates to an energy-conversion system comprising an internal combustion engine (1) and a generator (2) which is driven by the internal combustion engine, and comprising a rotational connection which couples a first shaft (3) of the internal combustion engine (1) to at least one second shaft (5) of the energy-conversion system, wherein the second shaft (5) rotates in the opposite direction to the first shaft (3) and the first shaft (3) is arranged parallel to the second shaft (5), wherein products of moments of inertia and respectively associated rotational speed ratios of individual rotating components, which are rotationally coupled to one another by means of the rotational connection, at least approximately cancel one another out.

Abstract: The invention relates to a parallel crank drive (10), particularly for an internal combustion engine (11) having variable compression ratio, having: a first and a second clutch body (20, 21) that can each be connected to a first or second shaft (14, 19); —at least one clutch element (22) rotatably supported on both clutch bodies; —a housing (23) encompassing the clutch bodies and clutch elements. The invention further relates to an internal combustion engine having variable compression ratio, having: a pivotally supported crankshaft (14); —drive shaft (19); —parallel crank drive (10) between the crankshaft and drive shaft; —a housing (23) encompassing the parallel crank drive. The invention further relates to a manual transmission, particularly for an internal combustion engine (11) having variable compression ratio, having: an input shaft (19) that can be connected to a pivotally supported crankshaft (14); the parallel crank drive (10) between the crankshaft and input shaft.

Abstract: An internal combustion engine with a variable compression ratio is provided. The engine can have a crankshaft that is pivotably supported, a flywheel fixed on the crankshaft, and a connection shaft that is arranged between the crankshaft and an input shaft of a shift transmission.

Abstract: The present invention relates to a crank mechanism, wherein the crank mechanism has a one-piece crankshaft and also at least three one-piece connecting rods, which are assembled together with each other in a non-destructive way. In addition, a system module of such a crankshaft, a production method, and also a system for producing the crank mechanism are proposed.