| 摘要 |
<p>In a piston and connecting rod assembly, for an internal combustion engine, with a (part-)spherical, connecting rod small-end (64), entrained in a hollow piston body, by a retention ring (40), a chamber, serving as a localised reservoir (27), for lubricant and/or coolant (oil), is incorporated in the underside (18), of a piston crown (16), along with passages or grooves (26), communicating between the reservoir (27), and a coolant gallery (20) in the piston crown, for continuous interchange of lubricant (oil), between gallery (20) and reservoir (27), and thence lubricant (oil) return, over small end (upper and lower) part-spherical bearing surfaces (22, 23), to the retention ring (40), and through lubricant (oil) passages (46) in the ring, to an engine crankcase; affording an overall (re-) circulatory, lubricant (oil) feed and drainage path.</p> |
