Method and fuel injector for setting gaseous injector static flow rate with injector stroke
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United States of America Patent
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-
Aug 12, 2003
Grant Date -
N/A
app pub date -
Sep 25, 2000
filing date -
Sep 25, 2000
priority date (Note) -
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Abstract
A fuel injector having a fuel flow rate set by injector stroke is disclosed. The fuel injector includes a housing having a hollow passage and a seat disposed at one end of the hollow passage. A needle is slidably mounted in the hollow passage. The needle is operable between a first position wherein the needle engages the seat and a second position wherein the needle is disposed away from the seat. A first flow area is formed by a minimum frusto-conical area between the seat and the needle when the needle is disposed away from the seat. The fuel injector also includes an opening at the one end of the hollow passage proximate to the seat. The opening has a second flow area larger than the first flow area. A method for setting a gaseous fuel injector flow rate with injector stroke is also disclosed.
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