Valve seat insert and cylinder head with the valve seat insert

Details Valve seat insert and cylinder head with the valve seat insert Valve seat insert and cylinder head with the valve seat insert

1986-11-04

1988-08-16

Chambers, A. Michael

Valves and valve actuation

Valve

Seats

251368, 123188S, F01L 300

Patent

active

047638761

ABSTRACT:
A valve seat insert for use in a cylinder head a a piston engine including a ceramic member having a valve seat surface and a metallic member integrally combined on the outer periphery of the ceramic member. The metallic member is made of a metallic material having a coefficient of thermal expansion the same as or higher than that of the ceramic member and lower than that of the material of the cylinder head. The valve seat insert has not only high wear resistivity, heat shock resistivity and heat resistivity, but also easy productivity and reliability for use and further possible to be handled and fitted into the cylinder head easily. A cylinder head for piston engine has the above valve seat incorporated therein.

REFERENCES:
patent: 1949613 (1934-03-01), McDonald
patent: 2447858 (1948-08-01), Hoern
patent: 2665675 (1954-01-01), Sheppard
patent: 2695628 (1954-11-01), Wheildon, Jr.
patent: 2753858 (1956-07-01), Honeyman et al.
patent: 2753859 (1956-07-01), Bartlett
patent: 3487823 (1970-01-01), Tarten et al.
patent: 3658295 (1972-04-01), Paine et al.
patent: 3871616 (1975-03-01), Taylor
patent: 4546737 (1985-10-01), Kazuoka et al.
patent: 4554897 (1985-11-01), Yamada et al.
patent: 4556022 (1985-12-01), Yamada et al.
Ingenieurs De L'Automobile, No. 8, Nov.-Dec. 6, 1983, pp. 28-33, Paris, France; U. Dworak et al.; "Ceramic Components for Combustion Engines".

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