Abstract: An internal combustion engine for a motor vehicle, having at least one adjusting device by means of which at least one compression ratio of the internal combustion engine is variably settable. At least one detection device is provided by means of which at least one signal (20, 22) which characterizes an actuation effort for setting the compression ratio is detectable. The invention further relates to a method for checking an adjusting device of such an internal combustion engine.

Abstract: Internal combustion engine with bearing shells, which are formed essentially by thermal sprayed bearing layers, wherein the thermal sprayed bearing layers are formed by at least two slide bearing materials with different hardness, which are spatially separated from each other and are provided on the outer surface of the bearing shell, as well as process for production of bearing shells for internal combustion engines including the steps: mechanical conditioning of the bearing surface coating of the bearing surface with the materials of the bearing shell by thermal spray processes finishing flattening processing of the applied layer wherein as bearing shell at least two slide bearing materials with different hardness were deposited separated spatially from each other, wherein the materials are in contact with each other via interlayers or joint layers.

Abstract: Internal combustion engine with bearing shells, which are formed essentially by thermal sprayed bearing layers, wherein the thermal sprayed bearing layers are formed by at least two slide bearing materials with different hardness, which are spatially separated from each other and are provided on the outer surface of the bearing shell, as well as process for production of bearing shells for internal combustion engines including the steps: mechanical conditioning of the bearing surface coating of the bearing surface with the materials of the bearing shell by thermal spray processes finishing flattening processing of the applied layer wherein as bearing shell at least two slide bearing materials with different hardness were deposited separated spatially from each other, wherein the materials are in contact with each other via interlayers or joint layers.

Abstract: A connecting rod is designed to be divided at the large connecting rod eye and the connecting rod cover is connected by screw means to a connecting rod. In a threadless area of the screw means, securing means are provided between the screw means and a part of the connecting rod. The installed screw means may be braced by the securing means with respect to a part of the connecting rod.

Abstract: In a cylinder head for a multi-cylinder internal combustion engine including a cylinder head roof with a coolant space disposed below and an oil space disposed above the cylinder head roof, a number of cylinder head bolt support columns arranged along the side walls of the cylinder head, and a recess formed in each cylinder head section for receiving a spark plug or a fuel injection nozzle, laterally extending reinforcement ribs are provided in the oil space which extend in each cylinder head section between the cylinder head structure surrounding the recess and the cylinder head bolt support columns so as to provide a reinforcement grid for the cylinder head.

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 a liquid-cooled generator including a generator structure disposed in a housing in spaced relationship therefrom so as to form a narrow space between the generator structure and the housing wherein the housing has inlet and exit opening for conducting a coolant through the annular space, a restriction is disposed in the annular space between the inlet and the exit openings and the inlet opening extends essentially tangentially to the inner wall of the generator housing so as to establish in the annular space an essentially circumferential coolant flow.

Abstract: A method for manufacturing a cast cylinder head for an internal combustion engine in a casting mold includes placing a sand core in a casting mold in a cavity between an upper part and a lower part of the mold to form a water chamber. Before casting, a displacement body is placed in the sand core, and the displacement body remains in the water chamber after casting.

Abstract: In a liquid-cooled cylinder block and crankcase in an open-deck construction, a displacement body is placed in the coolant space. The shape of the displacement body approaches the shape of the coolant space. The interior wall of the displacement body, together with the exterior surface of the cylinder block containing the cylinders, bound a narrow gap which is connected with the coolant inlet connection. As the result, the coolant is forced to flow along the cylinder block so that an intensive cooling is achieved with a reduced coolant quantity.

Abstract: In a crankcase for a piston machine having a bearing support structure for a crankshaft main bearing with a bearing base part integrally formed with the bearing support structure and a bearing cover mounted onto the bearing base part by bearing bolts extending into bolt mounting columns, the bearing support structure includes a transverse wall which extends between the crankcase walls, the bearing support base and the bearing base part and includes a rib structure of an increased wall thickness formed between the bearing base part and the bearing support base and having a recess in the area between the end of a mounting bolt bore in the bolt mounting column and the bearing support base providing for a force flux path which istributes the force flux evenly over the length of the threaded mounting bolt bore area.

Abstract: In a liquid cooled multi-cylinder internal combustion engine comprising an engine block having a cooling water space, wherein a cylinder head is mounted on the engine block by cylinder head bolts with a cylinder head gasket disposed therebetween, and the cylinder head includes a water space which is in communication with the engine block water space by passages extending through the gasket and the cylinder head bottom wall, the cylinder head bolts extend through the passages into the engine block in spaced relationship from the walls defining the passages such that cooling water flowing from the engine block cooling water space through the passages to the cylinder head cooling water space, flows along the cylinder head bolts maintaining them at cooling water temperature, and the cylinder head includes in its cooling water space longitudinal ribs extending between the cylinder head bottom and top walls for reinforcing the cylinder head.