US 12,421,924 B2
Fuel supply assembly with in-tank reservoir
Bryan K. Gangler, Unionville, MI (US); Jacob R. Mikulak, Vassar, MI (US); Bradley J. Roche, Millington, MI (US); and David L. Speirs, Cass City, MI (US)
Assigned to WALBRO LLC, Cass City, MI (US)
Appl. No. 18/027,663
Filed by Walbro LLC, Cass City, MI (US)
PCT Filed Sep. 29, 2021, PCT No. PCT/US2021/052551
§ 371(c)(1), (2) Date Mar. 22, 2023,
PCT Pub. No. WO2022/072426, PCT Pub. Date Apr. 7, 2022.
Claims priority of provisional application 63/085,473, filed on Sep. 30, 2020.
Prior Publication US 2023/0407827 A1, Dec. 21, 2023
Int. Cl. F02M 37/10 (2006.01); F02M 37/00 (2006.01); F02M 37/02 (2006.01); F02M 37/12 (2006.01); F02M 37/18 (2006.01); F02M 37/44 (2019.01)
CPC F02M 37/10 (2013.01) [F02M 37/0052 (2013.01); F02M 37/025 (2013.01); F02M 37/106 (2013.01); F02M 37/12 (2013.01); F02M 37/18 (2013.01); F02M 37/44 (2019.01)] 14 Claims
OG exemplary drawing
 
1. A fuel supply assembly, comprising:
a reservoir having; an interior; an inlet that communicates with the reservoir interior; and a channel having multiple levels that define a spiral flow path that directs fuel outwardly against an inner surface of the reservoir;
a primary fuel pump having an inlet in communication with the reservoir interior and an outlet through which fuel is discharged under pressure;
a pressure regulator having an inlet that receives fuel previously discharged from the primary fuel pump outlet, an outlet through which fuel flows and a pressure regulating valve that controls fuel flow from the pressure regulator inlet to the pressure regulator outlet; and
a secondary fuel pump having a body that defines a first inlet, a second inlet and an outlet, wherein the first inlet receives at least some of the fuel discharged from the pressure regulator outlet, a nozzle communicated with the first inlet so that fuel that flows out of the nozzle flows into the body via the first inlet, the second inlet is in communication with a supply of fuel, and the outlet is in communication with the reservoir interior wherein the flow of fuel through the nozzle creates a drop in pressure in the area of the second fuel inlet to draw fuel from the supply of fuel through the second fuel inlet and the fuel drawn in through the second fuel inlet is combined with the flow of fuel from the nozzle and the combined fuel flows are discharged from the secondary fuel pump outlet and into the reservoir.