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US 2020/0003170 A1Published application
Fuel Injector With Precluded Fuel Flow at Sac Volume
AssigneeGM Global Technology Operations LLC
InventorsRonald O. Grover, JR., Scott E. Parrish, David J. Brooks
Life of this patent
Estimating the term…
Abstract
A fuel injector for an internal combustion engine. The fuel injector has a needle and a nozzle that inter-relate with each other in assembly. Relative movement between the needle and nozzle bring the fuel injector between a closed state of operation and an open state of operation amid use of the fuel injector. The nozzle has one or more passages therein through which fuel is discharged. Fuel flow is precluded at a sac volume of the fuel injector.
Claims20
A fuel injector, comprising:
- a needle;
- and
- a nozzle receiving the needle and having at least one passage for discharged fuel flow;
- wherein, during use of the fuel injector, when the fuel injector is in an open state of operation and when the fuel injector is in a closed state of operation, fuel flow at a sac volume is precluded.
1 more element
A fuel injector, comprising:
- a needle having an additive-manufactured portion;
- and
- a nozzle receiving the needle and having at least one passage for discharged fuel flow;
- wherein, during use of the fuel injector, when the fuel injector is in an open state of operation the additive-manufactured portion aids in delivery of fuel flow to the at least one passage, and when the fuel injector is in a closed state of operation the additive-manufactured portion precludes fuel flow at a sac volume.
1 more element
Dependencies are inferred from the claim text.