Oil pan for an internal combustion engine

Internal-combustion engines – Frame construction – Horizontal cylinder

Patent

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Details

184106, F02F 700

Patent

active

055267815

ABSTRACT:
An oil pan for an internal combustion engine is made of cast aluminum alloy and has a first flange for attachment to the cylinder block and a second annular flange for attachment to the transmission case. Access holes near a bottom end of the second annular flange allow access to the heads of mounting bolts extending through the first flange. The first flange can be securely clamped to the opposing mounting of the cylinder block because all of the mounting bolts can directly clamp the first flange onto the mounting surface. Annular ribs surround the access holes and are connected together by a connecting rib so as to ensure a sufficient rigidity of the second flange. As a result, the sealing performance can be readily ensured and a vibration free power structure can be achieved.

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