Patent ID: 8100110

Claim:
A fuel injector for use with a pressurized fuel source and at least one drain, the fuel injector comprising: an intensifier assembly including: a control chamber co-axially positioned opposite from an intensification chamber, and a pressurization chamber co-axially positioned between the control chamber and the intensification chamber; a first control valve is associated with the control chamber, the first control valve having a first position in which the control chamber fluidly communicates with the pressurized fuel source, and a second position in which the control chamber fluidly communicates with the at least one drain; the intensification chamber fluidly communicating with the pressurized fuel source; and the pressurization chamber fluidly communicating with the pressurized fuel source; and a nozzle assembly including: a nozzle cavity fluidly communicating with the pressurization chamber; a nozzle chamber; and a second control valve fluidly communicating with pressurization chamber, the nozzle chamber and the at least one drain, the second control valve having a first position in which the nozzle chamber fluidly communicates with the pressurization chamber, and a second position in which the nozzle chamber fluidly communicates with the at least one drain; wherein the fuel injector delivers intensified fuel from the nozzle cavity when the first control valve is in the second position and the second control valve is in the second position, and wherein the fuel injector delivers non-intensified fuel from the nozzle cavity when the first control valve is in the first position and the second control valve is in the second position.