Fuel injector
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United States of America Patent
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Jun 21, 2005
Grant Date -
Jan 24, 2002
app pub date -
Jul 20, 2001
filing date -
Jul 21, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A fuel injector includes a pressure intensifying chamber communicating with a fuel supply passage through a check valve, a plunger for pressure-intensifying fuel introduced into the pressure intensifying chamber, and a needle valve for injecting the fuel pressure-intensified in the pressure intensifying chamber through an injection port, wherein there is provided in the fuel supply passage a throttle passage normally communicating with a fuel drain passage, air being bled during startup while leaking fuel.
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