Fuel injector
AssigneeAVL Powertrain Engineering, Inc.
InventorJames H. Yager
Life of this patent
Estimating the term…
Abstract
A fuel injector is provided and may include an injector body and an injector valve. The injector body may define a longitudinally extending chamber and may include a first intake port, a second intake port and a fuel injection port. The injector valve may be disposed within the chamber and may include a longitudinally extending aperture in fluid communication with the longitudinally extending chamber. The injector valve may be configured to prevent fluid communication between the first intake port and the second intake port, and may be configured to prevent fluid communication between the fuel injection port and the second intake port.
Claims22
A fuel injector comprising:
- an injector body defining a longitudinally extending chamber, the injector body having a first intake port, a second intake port and a fuel injection port;
- and
- an injector valve disposed within the longitudinally extending chamber, the injector valve including a longitudinally extending aperture in fluid communication with the longitudinally extending chamber, the injector valve being configured to prevent fluid communication between the first intake port and the second intake port and to prevent fluid communication between the fuel injection port and the second intake port;
- and
- a control valve at least partially disposed in the injector body and operable to control fluid communication between the first intake port and the longitudinally extending chamber.
A fuel injector comprising:
- an injector body defining a longitudinally extending chamber, the injector body having a first intake port, a second intake port, and a fuel injection port, the first intake port being configured to deliver a first fluid into the longitudinally extending chamber to apply a first force, the second intake port being configured to deliver a second fluid into the longitudinally extending chamber to apply a second force, the second force opposing the first force;
- an injector valve disposed within the longitudinally extending chamber and configured to prevent fluid communication between the first intake port and the second intake port, the injector valve including a longitudinally extending aperture in fluid communication with the longitudinally extending chamber;
- and
- a control valve, wherein the control valve allows the first fluid to flow through the first intake port to the longitudinally extending chamber when the control valve is open, and the control valve prevents the first fluid from flowing through the first intake port to the longitudinally extending chamber when the control valve is closed.
A method for operating a fuel injector, the fuel injector including an injector body defining a longitudinally extending chamber, and an injector valve slidably disposed within the longitudinally extending chamber, the injector body having a first intake port, a second intake port, and a fuel injection port, the method comprising:
- allowing a first fluid to flow into the longitudinally extending chamber through the first intake port to apply a first force on the injector valve in a first direction, such that the injector valve moves in the first direction within the longitudinally extending chamber and engages the injector body to prevent fluid communication between the second intake port and the fuel injection port;
- preventing the first fluid from flowing into the longitudinally extending chamber through the first intake port and applying the first force on the injector valve in the first direction;
- and
- allowing a second fluid to flow into the longitudinally extending chamber through the second intake port to apply a second force on the injector valve in a second direction opposite the first direction, such that the injector valve moves in the second direction within the longitudinally extending chamber to allow fluid communication between the second intake port and the fuel injection port,
- wherein the second fluid is different than the first fluid.
Dependencies are inferred from the claim text.