Patent ID: 9695905
Date: 2017-07-04
CPC Classifications: F02B,F02F,F16F

Claim:
1. An internal combustion engine comprising: an oil pan; a crankcase formed with an opening that communicates between the crankcase and the oil pan, the crankcase being provided with an oil pan side fastening area that surrounds the opening and contacts the oil pan, the crankcase having a first side and a second side facing each other in a direction perpendicular to an axis of a balance shaft at the oil pan side fastening area when viewed in a top plan view of the crankcase, the first side and the second side of the crankcase each extending in a direction of the axis of the balance shaft; and a balance shaft housing disposed between the oil pan and the crankcase to cover the opening, the first side and the second side of the crankcase being connected to each other by the balance shaft housing, wherein: