The piston which consists of the plural parts for the internal combustion engine and is cooled

摘要

The piston where this invention consists of the plural parts for the internal combustion engine and is cooled (1), piston apex (30) with underneath opposition, the cooling passage of ring condition (10) we have possessed, it regards those of the type which is closed the said cooling passage, as the ring the cooling passage cover which was formed (12) with. In the piston of this kind of type, with constitution of this invention, the cooling passage cover (12) has had the radial inside territory (12 ' ') the tongue piece (25), the said tongue piece engages, the notch which formed in the piston bottom part (6) (28), the cooling passage cover (12) assembles with this, the time and when driving time motion doing obstructs vis-a-vis the piston (1).