Internal combustion engine, piston null especially for large-sized marine Diesel engine

摘要

(57) Abstract The internal combustion engine, especially, being the large-sized marine Diesel engine, at the same time it possessed the piston crown and the annular rib of one body as a power transmission component with the piston and the piston rod, from the piston crown it faces the piston ring outside could provide the lower part, inside the annular territory between the side walls of the piston the rib support element it can provide, the said rib support element has ended at the conical wall, the hole which is expanded in axis and abbreviation and balance of the piston penetrated in the said conical wall, when the said hole was penetrated and cooling oil flowed, at axial direction section of the piston seeing, the conical wallIt is the piston for the engine which the side wall is connected with the side part which acquires roundness. At the purpose which decreases the receiving easiness of influence of the dynamic stress in the transition region with the support element and the side wall, the side wall at the wall part which acquires roundness has had thin wall thickness.