Lightweight articulated piston head and method of making the pis

Details Lightweight articulated piston head and method of making the pis Lightweight articulated piston head and method of making the pis

1998-10-02

1999-08-10

Nguyen, Hoang

Expansible chamber devices

Piston

Open-ended hollow skirt type

92231, 1231936, B01D 4500

Patent

active

059341742

ABSTRACT:
A piston head is provided which is lightweight and inexpensive yet capable of handling high mechanical and thermal loading during operation. The piston head generally includes a top head portion and a bottom head portion formed separately and connected by a friction weld. Importantly, the top head portion includes a first cooling gallery formed between the depending outer wall and a first inner depending wall and a second cooling gallery formed between the first inner depending wall and a second inner depending wall. The bottom head portion also includes corresponding first and second upper extending walls connected to the first and second inner depending walls to form the lower portion of each cooling gallery. The inner depending and upper extending walls are formed so that the ratio of the sum of the transverse thickness of the adjacent walls to the outer diameter of the piston head is approximately from 2% to 8%, and preferably 4% to 6%. This ratio optimal reduces piston weight while maintaining sufficient strength to endure mechanical loading during operation and providing improved thermal cooling capacity.

REFERENCES:
patent: 3613521 (1971-10-01), Itano
patent: 3915141 (1975-10-01), Ottl et al.
patent: 4577595 (1986-03-01), Deutschmann et al.
patent: 4581983 (1986-04-01), Moebus
patent: 5040454 (1991-08-01), Ballheimer et al.
patent: 5081968 (1992-01-01), Bruni
patent: 5115726 (1992-05-01), Daxer et al.
patent: 5144884 (1992-09-01), Kelly
patent: 5207147 (1993-05-01), Leites et al.
patent: 5279268 (1994-01-01), Brink et al.
patent: 5289758 (1994-03-01), Berlinger
patent: 5359922 (1994-11-01), Leites et al.
patent: 5394788 (1995-03-01), Mendes et al.
patent: 5692430 (1997-12-01), McLaughlin et al.
patent: 5724933 (1998-03-01), Silvonen et al.
Carmo Ribeiro et al., "Articulated Piston," U.S. Patent Application Serial No. 689,244, filed Aug. 7, 1996. pp. 1-22.

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