Title:
MONOBLOC PISTON HAVING OPEN FLOOR
Document Type and Number:
WIPO Patent Application WO2004044397
Kind Code:
A3
Abstract:
A monobloc piston assembly has at least two parts fixedly joined together forming a piston body having an oil cooling gallery. The oil cooling gallery is defined by an upper wall, a lower wall, and a pair of radially spaced inner and outer annular walls. A skirt is formed as one piece and of the same material with at least one of the two parts and depends generally along a longitudinal axis from the lower wall. A pair of pin bosses are spaced laterally from the longitudinal axis and depend generally from the lower wall. At least one elongated opening extends generally between the pin bosses with the opening preferably spanning a substantial portion of the distance between the pin bosses. Oil flows into and out of an oil cooling gallery through the opening.
Inventors:
ZHU XILUO
GAISER RANDALL R
GAISER RANDALL R
Application Number:
PCT/US2003/035120
Publication Date:
January 27, 2005
Filing Date:
November 05, 2003
Export Citation:
Assignee:
FEDERAL MOGUL CORP (US)
International Classes:
F02F3/00; F02F3/22; F16J1/00; F16J1/09; F01P3/08; (IPC1-7): F16J1/04
Foreign References:
| US6588320B2 | 2003-07-08 | |||
| US6494170B2 | 2002-12-17 | |||
| US6371061B2 | 2002-04-16 | |||
| US5081968A | 1992-01-21 |
Other References:
See also references of EP 1558864A4
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