Engine lubricating device

An engine lubricating device comprising a cylinder block, an oil strainer, and an oil pan, the oil strainer and the oil pan mounted to a lower portion of the cylinder block and a strainer inlet of the oil strainer being open at a central portion of an inner bottom of the oil pan,

• wherein the oil strainer includes an outer cylinder and an inner cylinder, the outer cylinder and the inner cylinder form straight inner and outer double cylinders, the outer cylinder has the strainer inlet at a lower end, the inner cylinder has a peripheral wall formed as a filter portion,
• the oil strainer is led out in an orientation inclined downward from the cylinder block toward the inner bottom portion of the oil pan, an upper end portion of the outer cylinder is fixed to the cylinder block, and an upper end opening portion of the inner cylinder communicates with an oil passage inlet of the cylinder block, and
• wherein the inner cylinder has a closing plate and a plurality of shake preventing protrusions, the closing plate closes an entire area of a lower end of the inner cylinder and protrudes from the lower end of the inner cylinder toward an inner peripheral face of the outer cylinder, the respective shake preventing protrusions protrude radially from an outer peripheral edge of the closing plate toward the inner peripheral face of the outer cylinder, and oil passage ports positioned between the shake preventing protrusions adjacent in a circumferential direction of the outer peripheral edge of the closing plate are provided between the outer peripheral edge of the closing plate and the inner peripheral face of the outer cylinder so that engine oil is introduced into an area around the filter portion of the inner cylinder through the oil passage ports narrowed with the closing plate and the shake preventing protrusions, without being introduced from the lower end of the inner cylinder into the inner cylinder.