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US 2014/0117121 A1Published application
Fuel injection system
AssigneePicospray, LLC
InventorLihang Nong
Life of this patent
Estimating the term…
Abstract
A fuel injector is provided. The fuel injector includes a sleeve having a first end proximate an outlet; a piston slidingly received in the sleeve, the piston having a first end proximate the outlet; a pumping chamber at least partially defined by the sleeve between the first end of the piston and the outlet; and a normally-open inlet valve through which fuel passes to enter the pumping chamber.
Claims20
A fuel injector, comprising:
- a sleeve having a first end proximate an outlet;
- a piston received in the sleeve and slidable between a first position and a second position, the piston having a first end proximate the outlet;
- a pumping chamber at least partially defined by the sleeve between the first end of the piston and the outlet;
- and
- a normally-open inlet valve through which fuel passes to enter the pumping chamber.
2 more elements
A control system for a fuel injector comprising:
- a circuit configured to measure a current through a coil in the fuel injector;
- and
- processing electronics configured to:
- receive the measured current from the circuit;
- and
- determine at least one of a velocity and a position of the coil through a magnetic field by correlating the measured current to the velocity of the coil.
3 more elements
An outlet valve assembly for a fuel injector comprising
- an outlet valve comprising:
- a valve seat;
- a valve body;
- and
- a spring biasing the valve body against the valve seat such that the outlet valve assembly is normally closed;
- wherein the outlet valve opens passively under pressure.
3 more elements
Dependencies are inferred from the claim text.