Valve guide for an internal combustion engine

Details Valve guide for an internal combustion engine Valve guide for an internal combustion engine

1986-08-01

1988-01-05

Feinberg, Craig R.

Internal-combustion engines

Valve

Valve head cooperates with manifold

428633, 501103, F01L 300

Patent

active

047168692

ABSTRACT:
A tubularly formed valve guide (1) with a bore for a metal valve shank (2) for use in an internal combustion engine comprising a sintered body of a partially stabilized zirconium oxide having a porosity of less than 3%. Even under extreme stress, e.g., in an outlet valve of a high-power engine, but in particular in the blow-off valve of an exhaust gas turbocharger, the valve guide shows a considerably reduced wear as compared to conventional valve guides.

REFERENCES:
patent: 3887387 (1975-06-01), Sturhahn
patent: 4269903 (1981-05-01), Clingman et al.
patent: 4279655 (1981-07-01), Garvie et al.
patent: 4495907 (1985-01-01), Kamo
An Introduction to Zirconia by Dr. R. Stevens, Jun. 1983, pp. 11-17.

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