Abstract: A main bearing cap having a bearing cap body defining a vertical centerline, the bearing cap body having a top surface opposite a bottom surface, a pair of upper protruding parts and a pair of lower protruding parts that extend in a horizontal direction that is orthogonal to a longitudinal axis of a crankshaft, and a pair of posts that extend between the upper and the lower protruding parts. Each of the posts having a profiled side surface that is recessed to a profiled surface depth to reduce contact pressure and fretting between the bottom surface of the bearing cap and a joint surface of a bulkhead of a cylinder block when the parts are assembled. The profiled side surfaces also reduce the stiffness of the bearing cap to match more closely that of the cylinder block and direct load or force towards a centerline of the bearing cap.

Abstract: A main bearing cap having a bearing cap body defining a vertical centerline, the bearing cap body having a top surface opposite a bottom surface, a pair of upper protruding parts and a pair of lower protruding parts that extend in a horizontal direction that is orthogonal to a longitudinal axis of a crankshaft, and a pair of posts that extend between the upper and the lower protruding parts. Each of the posts having a profiled side surface that is recessed to a profiled surface depth to reduce contact pressure and fretting between the bottom surface of the bearing cap and a joint surface of a bulkhead of a cylinder block when the parts are assembled. The profiled side surfaces also reduce the stiffness of the bearing cap to match more closely that of the cylinder block and direct load or force towards a centerline of the bearing cap.

Abstract: An injector combustion shield assembly comprising a bore configured to receive a fuel injector, the bore including a fluid opening in fluid communication with a fluid jacket and a fluid outlet positioned within an annular wall of the bore; and a valve positioned between the fluid jacket and the fluid opening and configured to selectively permit a fluid from the fluid jacket to enter the bore, the valve being movable between an open configuration to permit fluid flow from the fluid jacket into the bore via the fluid opening and a closed configuration to prevent fluid flow from the fluid jacket into the bore.

Abstract: An injector combustion shield assembly comprising a bore configured to receive a fuel injector, the bore including a fluid opening in fluid communication with a fluid jacket and a fluid outlet positioned within an annular wall of the bore; and a valve positioned between the fluid jacket and the fluid opening and configured to selectively permit a fluid from the fluid jacket to enter the bore, the valve being movable between an open configuration to permit fluid flow from the fluid jacket into the bore via the fluid opening and a closed configuration to prevent fluid flow from the fluid jacket into the bore.