Pistons for an internal combustion engine

Details Pistons for an internal combustion engine Pistons for an internal combustion engine

1991-07-23

1992-01-21

Cross, E. Rollins

Internal-combustion engines

Particular piston and enclosing cylinder construction

Cylinder detail

92186, 92217, 92218, F02F 300

Patent

active

050819682

ABSTRACT:
A piston for an internal combustion engine is described, the piston having a lower crown portion and an upper crown portion, the upper crown portion including a combustion bowl and a piston ring-groove belt of generally annular form depending from the outer periphery of the crown surface, the lower crown portion comprising a generally circular plate member having an upstanding ring on the upper surface thereof, the upper crown portion and the lower crown portion being joined together by retention means between the combustion bowl and the upstanding ring, and between co-operating spigot and socket means formed on the base of the combustion bowl and on the plate member, to prevent withdrawal by axial forces, and there being an oil cooling gallery defined between the upper crown portion and the lower crown portion.

REFERENCES:
patent: Re19904 (1936-03-01), Donaldson
patent: 1900991 (1933-03-01), Matheson
patent: 3628511 (1971-12-01), Fischer
patent: 4947805 (1990-08-01), Steppat et al.

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