Casting device for engine cylinder block, casting mold for same, and casting method for same

A casting mold for a cylinder block of an engine, the casting mold being configured to cast an open deck cylinder block including a portion of a bearing portion of a crankshaft and a portion of a crankcase, wherein

• the engine is a multi-cylinder engine including a plurality of cylinders arranged in a line,
• the casting mold comprises:
• a first mold configured to form the portion of the bearing portion and the portion of the crankcase;
• and
• a second mold including a plurality of bore pins respectively defining cylinder bores of the cylinders, the bore pins being arranged to correspond to a cylinder bank including the plurality of cylinders, the second mold being matched with the first mold to form a cavity to cast the cylinder block, and
• of the plurality of bore pins, two outermost bore pins in a series direction each have an inclined portion that is inclined away from an adjacent 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 and which corresponds to a longitudinal direction of the cylinder bank.

A method for casting a cylinder block of an engine, the method being used to cast an open deck cylinder block including a portion of a bearing portion of a crankshaft and a portion of a crankcase, the engine being a multi-cylinder engine including a plurality of cylinders arranged in a line, the method comprising:

• matching a first mold and a second mold together to form a cavity to cast the cylinder block, the first mold being configured to form the bearing portion and the crankcase, the second mold including a plurality of bore pins respectively defining cylinder bores of the cylinders, the bore pins being arranged to correspond to a cylinder bank including the plurality of cylinders;
• injecting molten metal into the cavity formed in the matching;
• and
• after the injecting of the molten metal, releasing the first mold and then releasing the second mold, wherein
• in the matching, the second mold is matched with the first mold such that portions of two outermost bore pins of the plurality of bore pins in a series direction are inclined away from an adjacent 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 and which corresponds to a longitudinal direction of the cylinder bank.