Fuel injector with selectable intensification
AssigneeCaterpillar Inc.
InventorsRonald Shinogle, Daniel Ibrahim
Life of this patent
Estimating the term…
Abstract
A system for selectively intensifying fuel for injection utilizing a fuel injector having an intensifier piston connected to a drain and a pressurized fuel source. The intensifier piston includes 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. The control chamber selectively fluidly communicates with the pressurized fuel source and the drain. The intensification chamber fluidly communicates with the pressurized fuel source and the pressurization chamber fluidly communicates with the pressurized fuel source and a nozzle assembly.
Claims23
A fuel injector comprising:
- an intensifier fluidly connected to at least one drain and a pressurized fuel source;
- the intensifier 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;
- the control chamber selectively fluidly communicates with the pressurized fuel source and the drain;
- the intensification chamber fluidly communicates with the pressurized fuel source;
- and
- the pressurization chamber fluidly communicates with the pressurized fuel source and a nozzle assembly.
A fuel injector comprising:
- an intensifier connected to at least one drain and a pressurized fuel source;
- the intensifier including an internal chamber housing an intensifier piston separating the internal chamber into a control chamber, an intensification chamber, and a pressurization chamber,
- the control chamber selectively fluidly communicating with the pressurized fuel source and the drain;
- the intensification chamber fluidly communicating with the pressurized fuel source;
- the pressurization chamber fluidly communicating with a flow control valve and a nozzle assembly;
- and
- the flow control valve allowing continuous supply of fluid to the pressurization chamber.
A method for selectively intensifying fuel for injection utilizing a fuel injector, comprising:
- selectively fluidly communicating an intensification chamber with a pressurized fuel source and at least one drain;
- fluidly communicating a pressurization chamber with the pressurized fuel source;
- fluidly communicating the pressurization chamber with the pressurized fuel source and a nozzle assembly;
- pressurizing fuel in the pressurization chamber by selectively connecting the control chamber to the drain;
- and
- controlling injection by selectively connecting the nozzle assembly to the drain.
Dependencies are inferred from the claim text.