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1. (WO2013119898) PISTON WITH SUPPLEMENTAL COOLING GALLERY AND INTERNAL COMBUSTION ENGINE THEREWITH

Pub. No.:    WO/2013/119898    International Application No.:    PCT/US2013/025266
Publication Date: Fri Aug 16 01:59:59 CEST 2013 International Filing Date: Sat Feb 09 00:59:59 CET 2013
IPC: F02F 3/18
Applicants: FEDERAL-MOGUL CORPORATION
Inventors: AZEVEDO, Miguel
LINETON, Warran, Boyd
HAMPTON, Keith
Title: PISTON WITH SUPPLEMENTAL COOLING GALLERY AND INTERNAL COMBUSTION ENGINE THEREWITH
Abstract:
An internal combustion engine and piston therefor is provided. The piston has a body including an upper combustion wall, a cylindrical outer wall including a ring belt region depending from the upper combustion wall, and a pair of pin bosses having axially aligned pin bores. The piston has a first cooling gallery in radial alignment with the ring belt region with a cooling medium contained therein. An insert member is fixed to the body in axially spaced relation beneath a lower wall of the first cooling gallery. The insert member bounds a second cooling gallery beneath the lower wall of the first cooling gallery. The insert member has an inlet opening configured to allow oil to flow into the second cooling gallery against the lower wall of the first cooling gallery and a separate outlet opening configured to allow the oil to flow outwardly from the second cooling gallery.