| 摘要 |
A loading sleeve for installing a piston equipped with radially compressible piston rings into a cylinder bore of an engine block. The sleeve is a generally cylindrical body open at its axially opposite ends and its tapered internally to squeeze the rings from their free state diameter down to bore diameter as the piston moves axially through the sleeve. The sleeve is adapted to mount on the marginal surface of the engine block surrounding the cylinder bore and has a necked down configuration forming an entrance lip for piloting the sleeve and thus the piston contained therein into the combustion chamber end of the cylinder bore. An all-plastic embodiment as well as a composite metal and plastic embodiment of the sleeve is disclosed. |
