Gas exchange valve of an internal combustion engine

Details Gas exchange valve of an internal combustion engine Gas exchange valve of an internal combustion engine

2006-06-01

2009-10-20

Cuff, Michael (Department: 3741)

Internal-combustion engines

Valve

Reciprocating valve

Reexamination Certificate

active

07603976

ABSTRACT:
With a gas exchange valve of an internal combustion engine having a hollow valve shaft (1) and valve disk (7), wherein the valve disk (7) has a valve tray (5) and a valve cone (6) connected to the outer edge thereof, whereby the valve cone (6) tapers with an increase in distance from the valve tray (5); the hollow valve shaft (1), passing completely through the space surrounded by the valve cone (6), is fixedly connected to the valve tray (5) at one end and at the other end is fixedly connected to the tapering end of the valve cone (6); the valve shaft (1) has parts telescoping into one another, namely a lower shaft part (3) facing the valve tray (5) and an upper shaft part (2) connected thereto, whereby the lower shaft part (3) engages in a form-fitting manner in the upper shaft part (2); and the upper shaft part (2) and the lower shaft part (3) are joined in a shaft connecting area (4), in particular by being welded together; coke deposits in the areas of the valve facing away from the combustion chamber, such deposits being promoted there due to interfering edges in the flow, are to be prevented.

REFERENCES:
patent: 2371548 (1945-03-01), Saffady
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patent: 6935296 (2005-08-01), Abele et al.
patent: 7240895 (2007-07-01), Abele et al.
patent: 198 04 053 (1999-08-01), None
patent: 199 20 176 (2000-11-01), None
patent: 102 57 505 (2003-07-01), None

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