A cylinder block of an engine is provided. The cylinder block includes a cast body defining one or more cylindrical bores. The cylinder block also includes a crankshaft bearing wall formed within the cast body. The crankshaft bearing wall is configured to be removably coupled with a bearing cap to define an opening for rotatably supporting a crankshaft of the engine. The cylinder block further includes a chamfered shoulder portion casted on the crankshaft bearing wall.

Provided are a stationary mold configured to form a portion of a bearing portion of a crankshaft and a portion of a crankcase, and a movable mold including a plurality of bore pins respectively defining cylinder bores of cylinders. The bore pins are arranged to correspond to a cylinder bank including the plurality of cylinders. The movable mold is matched with the stationary mold such that portions of outermost ones of the plurality of bore pins in a series direction are each inclined away from another one of the plurality of bore pins adjacent to the outermost bore pin in the series direction toward a distal end of the outermost bore pin, where the series direction represents a direction in which the plurality of bore pins are arranged.

A method is for generating a cylinder crankcase including a foreign object inclusion for cast reduction and for the improved cleanliness of the generated component. The cast material is in particular removed or pushed from the areas between the tie-rods (2) below the water jacket (1), to avoid dirt input into the component during later engine operation. The areas below the water jacket (1) between the tie-rods (2) are designed as a separate tie-rod core (3), and the bolts (4) used during later installation at the water jacket core (5) are enclosed in the tie-rod core (3), so that the tie-rod core (3) is completely surrounded by cast material in the component following the cast and the bolt (4) has coalesced with the cast, and the tie-rod core (3) remains in the generated component and is located in an encapsulated space generated by the cast material.

A cylinder block assembly has: a cylinder block having three cylinders aligned side-by-side; and four crank caps arranged side-by-side in an alignment direction of the cylinders and fastened to the cylinder block. The crank caps and the cylinder block are provided with crank bearings which rotatably support a crankshaft. The crank caps are arranged at both sides of each cylinder in the alignment direction. Intermediate crank caps positioned at intermediate positions in the plurality of the crank caps include removed parts so as to more easily deform when receiving a load from the crankshaft compared with the side crank caps.

An engine block assembly and method manufacturing an engine block assembly and related components. A casted engine block assembly includes a cylinder block portion. The cylinder block portion includes a plurality of cylinder block openings disposed therein, a cylinder block flange portion positioned at a top of the cylinder block portion and a cylinder block crankcase portion disposed at a base of the cylinder block. The cylinder block flange portion is configured for coupling the cylinder block to a cylinder head. The cylinder block portion includes a plurality of cylinder block walls extending between the cylinder block flange portion and the cylinder block crankcase portion and positioned about the plurality of cylinder block openings. The cylinder block walls house a plurality of internal channels. The plurality of cylinder block walls are void of enclosed openings extending through at least one of the cylinder block walls in the plurality of cylinder block walls.

A shaft assembly may include two or more Poka-Yoke bearing caps, each Poka-Yoke bearing cap having a pair of reference bores offset from a central axis of the bearing cap by differing offset distances, and each bearing cap defining a semi-circular recess that is positioned so as to align in use a central axis of the semi-cylindrical recess in the bearing cap with an axis of rotation of a shaft rotatably supported by the bearing cap. The differing offsets of the reference bores prevent the bearing cap from being assembled in a reversed orientation. To ensure that each bearing cap can only be fitted in one position, a centre spacing between the first and second reference bores of each bearing cap is different to the centre spacing used for other bearing caps used to support a single shaft.

An upper oil pan assembly is attached to the lower portion of a cylinder block. An opening is formed on a side wall of the upper oil pan assembly. The variable compression ratio mechanism changes a top dead center position of a piston in accordance with the rotational position of a control shaft to thereby change the compression ratio. The control shaft is rotationally driven by an actuator. At least a portion of the actuator is fixed to a main bearing cap in a state in which at least a portion thereof is positioned on the outer side of an upper oil pan assembly.

A flow guiding appliance of a turbomachine, in particular of an aircraft engine, for a partial exit flow of an outlet guide vane of a compressor, wherein, a flow guiding element delimits an annular channel about a shaft of the turbomachine. A frictional engagement connecting surface at the circumference of the flow guiding element connects the flow guiding element to another structural component of the turbomachine. The frictional engagement connecting surface with a closed enveloping surface can be inserted in a deformed state into the structural component with a circular cylindrical sealing surface with at least two opposite points. The at least two points of the closed enveloping surface are arranged in at least two opposite frictionally engaged contact areas of the circular cylindrical sealing surface following deformation. The invention also relates to a method for creating a flow guiding element.

An upper oil pan assembly is attached to the lower portion of a cylinder block. An opening is formed on a side wall of the upper oil pan assembly. The variable compression ratio mechanism changes a top dead center position of a piston in accordance with the rotational position of a control shaft to thereby change the compression ratio. The control shaft is rotationally driven by an actuator. At least a portion of the actuator is fixed to a main bearing cap in a state in which at least a portion thereof is positioned on the outer side of an upper oil pan assembly.

Provided are a stationary mold configured to form a portion of a bearing portion of a crankshaft and a portion of a crankcase, and a movable mold including a plurality of bore pins respectively defining cylinder bores of cylinders. The bore pins are arranged to correspond to a cylinder bank including the plurality of cylinders. The movable mold is matched with the stationary mold such that portions of outermost ones of the plurality of bore pins in a series direction are each inclined away from another one of the plurality of bore pins adjacent to the outermost bore pin in the series direction toward a distal end of the outermost bore pin, where the series direction represents a direction in which the plurality of bore pins are arranged.