Abstract: In an internal combustion engine including a housing with cylinders arranged in the housing, a crankshaft, and pistons moveably disposed in the cylinders and operatively connected to the crankshaft, and a device for changing the compression ratio of the cylinders of the internal combustion engine, the device comprises an adjusting arrangement with an eccentric which is mounted in the housing and, by means of rotation, controls the position and the direction of movement of the adjusting arrangement, and a drive for operating the adjusting arrangement including the eccentric.

Abstract: In an internal combustion engine including a housing with cylinders arranged in the housing, a crankshaft, and pistons moveably disposed in the cylinders and operatively connected to the crankshaft, and a device for changing the compression ratio of the cylinders of the internal combustion engine, the device comprises an adjusting arrangement with an eccentric which is mounted in the housing and, by means of rotation, controls the position and the direction of movement of the adjusting arrangement, and a drive for operating the adjusting arrangement including the eccentric.

Abstract: A unit carrier for secondary units of a motor vehicle internal combustion engine, having secondary unit attachment devices and engine block attachment devices. The unit carrier has a planned deformation point, which allows a relative displacement between the secondary unit and the engine block in case of a vehicle collision, if a predefined force is exceeded. The unit carrier is used in motor vehicles having a front engine arrangement.

Abstract: A unit carrier for secondary units of a motor vehicle internal combustion engine, having secondary unit attachment devices and engine block attachment devices. The unit carrier has a planned deformation point, which allows a relative displacement between the secondary unit and the engine block in case of a vehicle collision, if a predefined force is exceeded. The unit carrier is used in motor vehicles having a front engine arrangement.

Abstract: In a reciprocating piston internal combustion engine with a piston which is displacably arranged in a cylinder and is coupled in to a connecting rod whose movement can be transmitted to a crankshaft via a crank, a transmission element is provided between the connecting rod and the crank of the crankshaft and the movement of the transmission element can be manipulated by means of a control arm for an adjustment of the compression ratio of the engine. The transmission element is coupled to the crank via a joint disposed in the intermediate region between a bearing connection of the transverse lever structure with the control arm and a bearing connection of the transverse lever with the connecting rod, the bearing connection of the transverse lever with the connecting rod, the crank and the control arm being arranged in a predetermined relationship.

Abstract: In a reciprocating internal combustion engine having first and second cylinder banks arranged adjacent each other so that the axes of their cylinders extend essential parallel, a crankshaft is rotatably supported at an end of the cylinder banks between the longitudinal axes of the cylinders of the first and second cylinder banks and includes crank pins, on which cross-levers are rotatably supported and piston rods connected with an end to the pistons are rotatably supported with their other ends on the cross levers which have sidewardly extending portions controllably supported by control arms for adjusting the compression ratio in the cylinders of the engine.

Abstract: In a reciprocating piston internal combustion engine with a piston which is displacably arranged in a cylinder and is coupled in to a connecting rod whose movement can be transmitted to a crankshaft via a crank, a transmission element is provided between the connecting rod and the crank of the crankshaft and the movement of the transmission element can be manipulated by means of a control arm for an adjustment of the compression ratio of the engine. The transmission element is coupled to the crank via a joint disposed in the intermediate region between a bearing connection of the transverse lever structure with the control arm and a bearing connection of the transverse lever with the connecting rod, the bearing connection of the transverse lever with the connecting rod, the crank and the control arm being arranged in a predetermined relationship.

Abstract: In a reciprocating internal combustion engine having first and second cylinder banks arranged adjacent each other so that the axes of their cylinders extend essential parallel, a crankshaft is rotatably supported at an end of the cylinder banks between the longitudinal axes of the cylinders of the first and second cylinder banks and includes crank pins, on which cross-levers are rotatably supported and piston rods connected with an end to the pistons are rotatably supported with their other ends on the cross levers which have sidewardly extending portions controllably supported by control arms for adjusting the compression ratio in the cylinders of the engine.

Abstract: In an internal combustion engine comprising an engine block consisting of a crankcase, at least one cylinder sleeve extending from the crankcase and a coolant jacket disposed around the cylinder sleeve or sleeves and a cylinder head mounted on the engine block, the coolant jacket is a separate component consisting of a material lighter than the normally used cast iron jacket and is firmly engaged between the crankcase and the cylinder head which is mounted onto the cylinder sleeve or sleeves.

Abstract: In an oil pan for an internal combustion engine particularly for use with a motor vehicle, the oil pan consists of an outer latticed girder structure of a light-weight high-strength material and an inner thin-walled shell of plastic material forming an integral oil pan structure.

Abstract: In an engine block of an internal combustion engine having a clutch housing provided with cut-outs, a thin-walled liner is fitted into the clutch housing to cover the cut-outs so as to provide a clutch housing structure of a relatively low weight.

Abstract: In an internal combustion engine with an engine block, a cylinder head with a camshaft mounted on the engine block, a crankshaft mounted on the engine block opposite the cylinder head and a camshaft timing drive interconnecting the crankshaft and the camshaft, a camshaft timing drive enclosure is disposed at one end of the engine and fully encloses the camshaft timing drive, and the enclosure has extensions extending over the side walls of the engine block and covering openings formed in the side walls of the engine block providing for a light-weight arrangement with noise attenuating properties.

Abstract: In a crankcase of an internal combustion engine with lower and upper crankcase parts joined together along a separation plane extending through the axis of crankshaft bearings mounted in the transverse walls of the crankcase, the upper crankcase part has side walls with cut-outs formed therein and a cup-shaped member is disposed within the crank chamber formed between the transverse walls of the crankcase to cover the cut-outs. The cup-shaped member has an opening adjacent the respective cylinder of a cylinder block extending from the upper crankcase for accommodating a connecting rod extending between the crankshaft and a piston in the respective cylinder of the cylinder block.

Abstract: In a hydraulic tensioning arrangement for tensioning a flexible drive for a camshaft of an internal combustion engine including a crankcase and a cylinder head wherein a main lubricating oil channel extends longitudinally along the inside of the crankcase and has an opening at the front end of the crankcase, a hydraulic housing with a cylinder receiving a plunger is mounted on the front end of the crankcase so as to cover the main lubricating oil channel opening and passage elements are provided for supplying oil from the main lubricating oil channel to the cylinder to bias the plunger against tensioning elements engaging the flexible drive.

Abstract: In an engine block comprising a casting including side walls extending along a row of cylinders and front and rear walls extending between the side walls with top flanges for mounting a cylinderhead and bottom flanges for mounting an oil pan, the side walls have sections extending forwardly beyond the front wall to define therebetween a timing drive chamber.