Patent ID: 8011341

Claim:
A vehicle engine structure, comprising: a body of an engine; and an oil pan, supported under the engine body, through which a driving axle driven by the engine to drive a driving wheel of a vehicle is passed, wherein the oil pan includes: a pair of oil pan rail portions, which are spaced apart from each other, and are fastened to the engine body; a pair of side wall portions, facing each other, which are formed integrally with the oil pan rail portions under the oil pan rail portions; and a cylindrical portion, which surrounds the driving axle, and is integrally joined with the pair of side wall portions near the pair of oil pan rail portions, wherein, at least one axial end of the cylindrical portion, with an upper half portion of the cylindrical portion positioned over the driving axle is thicker at a top portion up to a level near an upper surface of an adjacent one of the oil pan rail portions.