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US 5,485,957 AGranted
Fuel injector with an internal pump
OwnerOded E. Sturmaninventor
Life of this patent
Estimating the term…
Abstract
A fuel injector that has an integral hydraulically driven mechanically actuated dual action intensifier and a solenoid control valve/spring assembly that accurately controls the movement of the injector intensifier piston, and the amount and timing of fuel ejected by the injector.
Claims16
A fuel injector, comprising:
- a housing which has a fuel port that receives a fuel, a nozzle opening that ejects fuel and a return port that allows fuel to flow out of said housing;
- an intensifier that moves between a first position and a second position to increase a pressure of the fuel that is ejected from said housing;
- a control valve that controls fuel flow between said intensifier and said return port;
- a pressure device that supplies fuel that moves said intensifier to the first position;
- and,
- a spring that moves said intensifier to the second position and pressurizes the fuel when said control valve allows fuel to flow m out of said return port.
3 more elements
A fuel injector, comprising:
- a housing which has a fuel port that receives a fuel, a nozzle opening that ejects fuel, a return port that allows fuel to flow out of said housing, an intensifier chamber that is coupled to said fuel port and said return port and a injection chamber coupled to said fuel port and said nozzle opening;
- a pressure device that supplies a pressurized fuel to said intensifier chamber and said injection chamber;
- an intensifier that moves to a first position when the pressurized fuel is introduced to said intensifier chamber;
- a control valve that allows the pressurized fuel to flow through said return port when in an open position;
- a spring assembly that moves said intensifier to a second position and pressurizes the fuel when said control valve is in the open position.
2 more elements
Dependencies are inferred from the claim text.