| 摘要 |
<p>A cooled one piece piston (20) for use in an internal combustion engine (10) has a piston body (34) with piston cooling gallery (70) disposed annularly in the piston body (34) and a flange portion (50) extending radially from a supporting portion of the piston body (34). A piston ring belt portion (52) is connected to the piston body (34) and to the flange portion (50) by welding to provide strength and rigidity, to close off the piston cooling gallery (70) and to define a closed piston cooling gallery (72). The closed piston cooling gallery (72) has a preselected longitudinal length sufficient to provide a maximum amount of fluid shaking space for improved piston cooling. <IMAGE></p> |
