Patent ID: 9719460
Date: 2017-08-01
CPC Classifications: F01M,F02B,F02F,F16N

Claim:
1. An engine oil pan, comprising a cylinder block having a plurality of arc-shaped grooves disposed on a second end surface of the cylinder block along the axial direction of a crank shaft to contain the crank shaft; a lower cover buckling with a first end surface of the cylinder block to form a cavity chamber, wherein the plurality of arc-shaped grooves are within the cavity chamber; the arc-shaped grooves form arc-shaped bulges in a sunk portion on the first end surface of the cylinder block; the arc-shaped bulges divide the sunk portion into a first space and a second space; and wherein a platform is disposed inside the sunk portion of the cylinder block; and when the engine is inverted, that is the first end surface is in the lower and the lower cover is in the upper, the lubricating oil is stored in a space formed by the sunk portion and the arc-shaped bulges, which are respectively the first space and the second space, and the height of the platform is lower than the height of the arc-shaped bulges for communicating the lubricating oil between the first space and the second space.