Method for making a carbon-carbon cylinder block

Details Method for making a carbon-carbon cylinder block Method for making a carbon-carbon cylinder block

1996-05-23

1997-11-18

Denion, Thomas E.

Expansible chamber devices

Cylinder detail

Nonmetallic piston contacting portion

92147, 921691, 123195R, 428408, 264 295, 264 296, 264 297, 156 89, F01B 1102

Patent

active

056876343

ABSTRACT:
A method for making a lightweight cylinder block composed of carbon--carbon is disclosed. The use of carbon--carbon over conventional materials, such as cast iron or aluminum, reduces the weight of the cylinder block and improves thermal efficiency of the internal combustion reciprocating engine. Due to the negligible coefficient of thermal expansion and unique strength at elevated temperatures of carbon--carbon, the piston-to-cylinder wall clearance can be small, especially when the carbon--carbon cylinder block is used in conjunction with a carbon--carbon piston. Use of the carbon--carbon cylinder block has the effect of reducing the weight of other reciprocating engine components allowing the piston to run at higher speeds and improving specific engine performance.

REFERENCES:
patent: 4659624 (1987-04-01), Yeager et al.
patent: 4772508 (1988-09-01), Brassell
patent: 4781223 (1988-11-01), McAliley et al.
patent: 5246639 (1993-09-01), Takabatake

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