There is provided a highly heat conductive piston ring for an internal combustion engine capable of exhibiting a gas seal function and a heat transfer function for a long period of time in a stable manner when used in an automobile gasoline engine having a...

It is an object of this invention to provide a high-quality internal combustion engine oil ring which stably keep oil consumption low for a long period and in which the shapes of an upper rail and a lower rail can be formed at low cost with high accuracy. ...

Provided are a fuel injection nozzle for an internal combustion engine, a nozzle blank, and a manufacturing method for the nozzle blank, wherein the production processes are simple, the productivity is high, and the production can be performed at a low cos...