Curved supporting elements for joining piston pin bosses to pist

Details Curved supporting elements for joining piston pin bosses to pist Curved supporting elements for joining piston pin bosses to pist

1988-08-12

1990-03-20

Garrett, Robert E.

Expansible chamber devices

Piston

With separable means for pivotally mounting connecting rod...

92238, 92239, F02F 300, F02F 328, F16J 116

Patent

active

049091328

ABSTRACT:
In order to achieve less deformation under gas pressure load and also under thermal load, the bottom piece of a piston with ring-carrying barrel is configured as a supporting cone tapering towards the piston pin and connected with the piston pin bosses by means of supporting elements. Cone, bosses and supporting elements are made in one piece. The supporting elements comprise walls extending essentially parallel to the axis of the piston pin. First distance (A) to the outer perimeter of the piston in the direction of the piston pin axis (Y--Y) are greater than the corresponding second distances (B) normal to this axis. The end parts of the walls are curved inwardly and leave open an area around an axis (X--X) normal to the piston pin axis.

REFERENCES:
patent: 2035692 (1936-03-01), Dietrich
patent: 4207808 (1980-06-01), Elsbett et al.
patent: 4256022 (1981-03-01), Elsbett et al.
patent: 4377967 (1983-03-01), Pelizzoni
patent: 4593660 (1986-06-01), Elsbett et al.
patent: 4644853 (1987-02-01), Russell et al.
patent: 4781159 (1988-11-01), Elsbett et al.
Elsbett, K. et al., "The Ferrum Piston For Diesel Engines-A Two-piece Articulated Piston Design", SAE Paper 850505, 8/1985, pp. 79-85.

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