Piston with separate head and skirt

Details Piston with separate head and skirt Piston with separate head and skirt

1991-05-01

1992-01-21

Nelli, Raymond A.

Internal-combustion engines

Particular piston and enclosing cylinder construction

Cylinder detail

92208, 92233, 92177, F02F 322, F02F 326

Patent

active

050819674

ABSTRACT:
A piston for an internal combustion engine with a separate head and skirt which are joined by a piston pin. The ring belt extends downward from the head and terminates above the pin. The space between the lower edge of the ring belt and a section of the head defines a cooling oil ring space. A depression is formed in the head and is partly defined by the section. The section has a thickness of between four percent and seven percent of the piston diameter, corresponding to an angle of zero to sixty degrees of the section with respect to a vertical longitudinally extending line. The thickness of the head above the space is six percent to twelve percent of the piston diameter. The top of the space is below the top ring groove. Above the second ring groove, the ring belt has a thickness of greater than two and one-half percent of the piston diameter.

REFERENCES:
patent: 2601344 (1952-06-01), Townhill
patent: 4648309 (1987-03-01), Schellmann
patent: 4704950 (1987-11-01), Ripberger et al.
patent: 4756241 (1988-07-01), Sakurahara et al.
patent: 4831919 (1989-05-01), Bruni
patent: 4947805 (1990-08-01), Steppat et al.

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