Reciprocating type compressor with improved cylinder block

Details Reciprocating type compressor with improved cylinder block Reciprocating type compressor with improved cylinder block

1995-12-29

1997-05-20

Denion, Thomas E.

Expansible chamber devices

Cylinder detail

92 71, 2988806, 417269, F01B 1102

Patent

active

056303556

ABSTRACT:
It is an object of the present invention to secure excellent slidability between a piston and cylinder bore even under severe running conditions.
Cylinder blocks are made of aluminum alloy comprising, by weight, 1.5 to 5.0% of Cu, 13 to 16% of Si, 0.5% or less of Mg, 1.0% or less of Zn, 1.0% or less of Fe, and the remainder of Al, and exfoliated recessions of primary Si crystal exist on the inner surface of a cylinder bore. The large number of minute exfoliated recessions function as oil reservoir spots.

REFERENCES:
patent: 4077810 (1978-03-01), Ohuchi et al.
patent: 4650644 (1987-03-01), Huret et al.
patent: 5056417 (1991-10-01), Kato et al.
patent: 5057274 (1991-10-01), Futamura et al.
patent: 5217546 (1993-06-01), Eady et al.

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