Back to results
US 10,895,228 B2Granted
Fuel ejector assembly for a vehicle
AssigneeNingbo Geely Automobile Research & Development Co.
InventorsRobert Moestam, Erik Fredholm
Life of this patent
Estimating the term…
Abstract
A fuel ejector assembly for a vehicle. A second fluid passage extends into a first fluid passage so that a nozzle opening is arranged inside the first fluid passage facing an outlet flow port such that a first flow of fuel in the first fluid passage flows around the nozzle opening. A flow shape unit is disposed within the first fluid passage in connection to the nozzle opening.
Claims13
A fuel ejector assembly for a vehicle, comprising:
- a first fluid passage having an inlet flow port and an outlet flow port in fluid communication with each other, enabling a first flow of fuel to flow in the first fluid passage;
- a second fluid passage connected to the first fluid passage, the second fluid passage having a suction flow port arranged outside the first fluid passage and a nozzle opening, where the suction flow port and the outlet flow port are in fluid communication with each other, wherein the suction flow port is configured for connection to a fuel tank suction passage so that a second flow of fuel flows in the second fluid passage from the fuel tank suction passage via the suction flow port to the outlet flow port;
- and
- a flow shape unit disposed within the first fluid passage between the inlet flow port and the outlet flow port, where the flow shape unit is configured to raise the flow velocity of the first flow of fuel flowing in a direction from the inlet flow port to the outlet flow port when a first pressure level is applied to the inlet flow port, so as to subject the second fluid passage to a second pressure level that is lower than the first pressure level;
- and
- wherein the second fluid passage extends into the first fluid passage and the nozzle opening is arranged inside the first fluid passage facing the outlet flow port such that the first flow of fuel in the first fluid passage flows through a cross-sectional area surrounding the nozzle opening between the nozzle opening and an inner wall of the first fluid passage, and the flow shape unit is disposed within the first fluid passage in connection to the nozzle opening;
- and
- wherein the flow shape unit is comprised of an end portion of the second fluid passage forming the nozzle, the end portion of the second fluid passage radially expands outward toward the inner wall of the first fluid passage relative to a portion of the second fluid passage upstream of the end portion.
5 more elements
A fuel ejector assembly for a vehicle, comprising:
- a first fluid passage having an inlet flow port and an outlet flow port in fluid communication with each other, enabling a first flow of fuel to flow in the first fluid passage;
- a second fluid passage connected to the first fluid passage, the second fluid passage having a suction flow port arranged outside the first fluid passage and a nozzle opening, where the suction flow port and the outlet flow port are in fluid communication with each other, wherein the suction flow port is configured for connection to a fuel tank suction passage so that a second flow of fuel flows in the second fluid passage from the fuel tank suction passage via the suction flow port to the outlet flow port;
- and
- a flow shape unit disposed within the first fluid passage between the inlet flow port and the outlet flow port, where the flow shape unit is configured to raise the flow velocity of the first flow of fuel flowing in a direction from the inlet flow port to the outlet flow port when a first pressure level is applied to the inlet flow port, so as to subject the second fluid passage to a second pressure level that is lower than the first pressure level;
- and
- wherein the second fluid passage has a portion inside the first fluid passage that extends parallel to the first fluid passage, the portion of the second fluid passage having a constant diameter along its length and the nozzle opening is a terminal end of the portion of the second fluid passage that has the same diameter as the portion of the second fluid passage;
- and
- wherein the second fluid passage extends into the first fluid passage and the nozzle opening is arranged inside the first fluid passage facing the outlet flow port such that the first flow of fuel in the first fluid passage flows through a cross-sectional volume surrounding the portion of the second fluid passage and the nozzle opening between the second fluid passage and an inner wall of the first fluid passage, and the flow shape unit is disposed within the first fluid passage in connection to the nozzle opening;
- and
- wherein the flow shape unit is comprised of a constriction of the first fluid passage.
7 more elements
Dependencies are inferred from the claim text.