Patent ID: 11859583
Assignee: CATERPILLAR INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A method of operating a fuel injector, including an injector body, a fuel inlet, and at least one orifice, the method comprising:
pressurizing fuel;
supplying the pressurized fuel to the fuel inlet;
operating a first check valve member to fluidly connect the fuel inlet to the at least one orifice via a first passageway and a first nozzle chamber in the injector body;
injecting a first amount of the fuel from the at least one orifice;
operating a second check valve member to fluidly connect the fuel inlet to the at least one orifice via a second passageway and a second nozzle chamber in the injector body; and
selectively injecting a second amount of the fuel from the at least one orifice;
wherein the first check valve member is movable between a closed position where the first check valve member blocks a flow of fuel through the at least one orifice, and an open position where the first check valve member does not block a flow of fuel through the at least one orifice.