S495 type diesel engine vent pipe structure

The invention discloses an S495 type diesel engine vent pipe structure, and belongs to the technical field of internal combustion engines. The S495 type diesel engine vent pipe structure comprises a diesel engine body, a vent pipe and a connecting pipe, wherein an air intake end of the vent pipe is connected with the diesel engine body; an air exhaust end of the vent pipe is communicated with the connecting pipe; the vent pipe comprises a general vent pipe and four branch vent pipes communicated with the genera vent pipe; pipe inner pore diameters of the branch vent pipes are increased by 10-20mm compared with the pore diameter of an air outlet in the diesel engine body; the end parts of the branch vent pipes after circular arc transition are matched with the pore diameter of an air outlet in the diesel engine body. The invention provides the S495 type diesel engine vent pipe structure which expands the size of an air stream flowing pipeline and the circular arc radius at the corner, enables the air stream to flow relatively smoothly, is relatively low in resistance, is relatively rapid in air ventilation speed, and enables operation performances of the diesel engine to be improved.