Valve seal for rotary valve engine
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United States of America Patent
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Dec 23, 2003
Grant Date -
Aug 28, 2003
app pub date -
Feb 12, 2002
filing date -
Feb 12, 2002
priority date (Note) -
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Abstract
A ceramic composite valve seal for a rotary valve assembly for use in internal combustion engines having rotary intake valves and rotary exhaust valves which have a spherical peripheral surface, the valve seal being of two-piece construction surrounding the intake or exhaust port and having an upper surface designed to contact the peripheral surface of the rotary valve, the two-piece construction defining a channel whereby compressed gases exert additional pressure on the seal enhancing the sealing contact between the seal and the valve.
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