Fuel injector with anti-scale ceramic coating for direct injection
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United States of America Patent
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Jul 31, 2001
Grant Date -
N/A
app pub date -
Jun 8, 2000
filing date -
Dec 12, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The injector comprises a tip having at least one outlet orifice (7) for fuel delivered to an engine combustion chamber. A ceramic coating (14) is deposited on the external face of the tip, preferably in a kink (12) bounding a recess in this external face, at least around and immediately downstream of the outlet orifice (7) relative to the direction in which the fuel is delivered. This invention is applicable to fuel injectors with a ceramic coating to protect against deposits of carbon oil for use with spark-ignition and direct injection internal combustion engines.
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