Internal combustion engine

Details Internal combustion engine Internal combustion engine

F - Mech Eng,Light,Heat,Weapons

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F02F 1/00 (2006.01) C22C 32/00 (2006.01) C22C 49/14 (2006.01) F02B 75/20 (2006.01) F02F 1/10 (2006.01) F02F 1/18 (2006.01) F02F 3/00 (2006.01) F02F 5/00 (2006.01) F02F 7/00 (2006.01) F16J 1/02 (2006.01) F16J 9/26 (2006.01) F16J 10/04 (2006.01) F02B 75/02 (2006.01) F02B 75/18 (2006.01) F02F 1/24 (2006.01)

Patent

CA 1328385

ABSTRACT OF THE DISCLOSURE An internal combustion engine having a cylinder block made of a light-alloy with a cylinder wall around a cylinder bore including a cylindrical fiber-reinforced portion which is formed of a mixture of an alumina-based fiber and a carbon fiber with a light-alloy matrix. The alumina-based fiber has a fiber volume fraction set in a range of 8 to 20%, and the carbon fiber has a fiber volume fraction set in a range of 0.3 to 15%. The aluminba-based fiber contains 25% or less, by weight, of silica, has an average aspect ratio of 20 to 150, and an alpha rate of 2 to 60%. The carbon fiber has an average aspect ratio set in a range of 10 to 100 and a Young's modulus set in a range of 20 to 30 t/mm . The piston for the cylinder bore has an iron-plated layer covered by a tin-plated layer. The piston rings for the piston may by of austenitic stainless steel to provide thermal expansion characteristics similar to the cylinder wall and may be provided with a nitride or chromium-plated layer.

543531

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