Internal combustion engine having cylinder block with cast-in oil pump inlet and outlet passages

A cylinder block for an internal combustion engine:

• a one-piece cylinder block casting having a plurality of cylinders formed therein, the plurality of cylinders extending between a top deck surface and a bottom block surface, and arranged between a front block end, and a back block end having a pump mounting face;
• a cast-in pump inlet passage formed in the one-piece cylinder block casting and extending forwardly and downwardly from the pump mounting face to the bottom block surface;
• and
• a cast-in pump outlet passage formed in the one-piece cylinder block casting and extending forwardly from the pump mounting face.

A cylinder block for an internal combustion engine comprising:

• a one-piece cylinder block casting having a top deck surface, a bottom block surface, a front block end, and a back block end;
• the one-piece cylinder block casting further having a plurality of cylinders formed therein and each extending between the top deck surface and the bottom block surface;
• the one-piece cylinder block casting further including a pump mounting face formed on the back block end, and each of an oil inlet opening and an oil outlet opening formed in the pump mounting face;
• the one-piece cylinder block casting further including an oil module side face located between the front block end and the back block end;
• a cast-in pump inlet passage extends through the one-piece cylinder block casting from the oil inlet opening to the bottom block surface;
• and
• a cast-in pump outlet passage extends through the one-piece cylinder block casting from the oil outlet opening to the oil module side face.