Reciprocating engine piston seal

Details Reciprocating engine piston seal Reciprocating engine piston seal

1987-05-08

1988-10-11

Look, Edward K.

Expansible chamber devices

Piston

Liquid between axially spaced side wall portions

92DIG2, 277 34, 277 75, 277 76, 277142, F01B 3100

Patent

active

047762616

ABSTRACT:
Apparatus for sealing the gap between a piston and engine cyinder wall of either a reciprocating engine or a reciprocating compressor. The apparatus includes a plurality of functionally-identical, gas-bearing-supported seal blocks that locate in a slot running circumferentially around the engine piston. Gases fed from the engine chamber to the gas bearing carrying the load on the seal block in the direction of piston travel. The seal block includes a gas accumulator cavity for gas storage. An orifice feeds gas from the gas accumulator cavity to the gas bearing interfacing between the seal block and the engine cylinder wall. The apparatus also includes a reaction piston having gas communicated thereto from the engine chamber.

REFERENCES:
patent: 793973 (1904-07-01), White
patent: 1867718 (1932-07-01), Towell
patent: 4118040 (1978-10-01), Chist et al.
patent: 4346685 (1982-08-01), Fujikawa
patent: 4455974 (1984-06-01), Shapiro et al.
patent: 4523764 (1985-06-01), Albers et al.
patent: 4632403 (1986-12-01), Ishitani et al.

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