Apparatus for external cooling of an exhaust valve
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United States of America Patent
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Oct 27, 1981
Grant Date -
N/A
app pub date -
Feb 2, 1979
filing date -
Feb 24, 1978
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This invention relates to a method and devices for improving the external cooling of an exhaust valve of internal combustion engines. This method consists in extending the open period of the exhaust valve beyond the normal closing instant by preventing it from closing completely at that instant but by reducing the free flow section between the valve and its seat to a residual value which is substantially constant and small compared to the maximum flow section corresponding to the full opening of the valve. Said devices comprise means for obtaining such residual opening of the exhaust valve.
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