Light-alloy cylinder head for reciprocating piston internal combustion engines
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United States of America Patent
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-
Oct 1, 1985
Grant Date -
N/A
app pub date -
Aug 29, 1984
filing date -
Aug 30, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In order to be able to enlarge the width of web 13 between adjacent valve seating rings 6 of a light-alloy cylinder head 1 for reciprocating internal combustion engines, an external diameter D1 of valve seating surface 11 at the valve seating ring is selected, which is smaller than the external diameter D2 of the total valve seating surface 7. In order nevertheless to give valve seating ring 6 the required strength, the smallest internal diameter D4 is smaller than the internal diameter D3 of the valve seating surface. Throttling the flow is avoided by a transition from D4 to D3, which is advantageous to flow.
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