Back to results
US 11,885,291 B2Granted
Low pressure fuel injection system for a combustion engine
AssigneeWalbro Corporation
InventorsBradley J. Roche, Jeffrey C. Hoppe, Duried F. Rabban
Life of this patent
Estimating the term…
Abstract
In at least some implementations, a charge forming device includes multiple throttle bores, an inlet chamber in which fuel is received, at least one fuel passage communicating the inlet chamber with the throttle bores, and a valve having an inlet in communication with the inlet chamber, an outlet and a valve head that is movable and allows flow from the inlet chamber through the outlet when the pressure in the inlet chamber is greater than a threshold pressure.
Claims28
A charge forming device, comprising:
- multiple throttle bores;
- an inlet chamber in which fuel is received;
- a vent passage communicating with the inlet chamber;
- at least one fuel passage communicating the inlet chamber with the throttle bores;
- and
- a valve having an inlet in communication with the inlet chamber, an outlet in communication with the vent passage and a valve head that is movable and selectively allows flow from the inlet chamber through the outlet when the pressure in the inlet chamber is greater than a threshold pressure, wherein the inlet chamber includes a bottom in which liquid fuel is retained and a top portion including gaseous matter, and wherein the vent passage communicates with the top portion.
3 more elements
A charge forming device, comprising:
- a throttle bore;
- an inlet chamber having a bottom in which liquid fuel is received and a top in which gaseous matter is received;
- at least one vent passage communicating with the top of the inlet chamber;
- at least one fuel passage communicating the inlet chamber with the throttle bore;
- and
- a valve having an inlet in communication with the inlet chamber, an outlet in communication with at least one of said at least one vent passages, and a valve head that is movable and allows flow from the inlet chamber through the outlet when the pressure in the inlet chamber is greater than threshold pressure to permit flow the said at least one of said at least one vent passages.
3 more elements
Dependencies are inferred from the claim text.