Abstract: A method of constructing a bedplate assembly for retention of a crankshaft in an internal combustion engine having an engine block includes forming a bedplate insert in a first pattern tool. The bedplate insert is defined by a height, a width, and a thickness. The bedplate insert also includes a shape having a variation in the width along the height. The method also includes arranging the formed bedplate insert in a second pattern tool. The method additionally includes forming in the second pattern tool a bedplate frame around the formed bedplate insert to generate the bedplate assembly. During forming of the bedplate frame, the variation in the width of the bedplate insert generates an internal rib in the bedplate frame that is configured to fix and retain the bedplate insert inside the bedplate frame and decrease deflection of the bedplate frame under crankshaft loads during operation of the engine.

Abstract: A method of constructing a bedplate assembly for retention of a crankshaft in an internal combustion engine having an engine block includes forming a bedplate insert in a first pattern tool. The bedplate insert is defined by a height, a width, and a thickness. The bedplate insert also includes a shape having a variation in the width along the height. The method also includes arranging the formed bedplate insert in a second pattern tool. The method additionally includes forming in the second pattern tool a bedplate frame around the formed bedplate insert to generate the bedplate assembly. During forming of the bedplate frame, the variation in the width of the bedplate insert generates an internal rib in the bedplate frame that is configured to fix and retain the bedplate insert inside the bedplate frame and decrease deflection of the bedplate frame under crankshaft loads during operation of the engine.

Abstract: A pump includes a housing defining an internal chamber having an axial inlet passage, a generally radial passage with an outlet to a volute. A rotatable impeller, disposed within the chamber, has a conical rear shroud sloping away from the axial inlet to define a rear recess. A shaft seal is disposed within the recess to minimize the axial length of the pump. A front surface of the shroud carries vanes operable to impel fluid from the axial inlet passage to the volute. Portions of the vanes extend forward into the axial inlet passage to induce coolant pre-rotation in the inlet passage and to improve pump efficiency. Pump efficiency may be further increased by a conical wall defining the axial inlet passage, a sloped wall defining the radial passage and a large radius between the axial inlet and the sloped wall to smooth fluid flow between the axial inlet passage and the volute.