US Patent 12025084 In-tank ejector pump

In accordance with at least one aspect of this disclosure, a system includes an in-tank fuel pump configured to be disposed in a fuel tank to supply fuel from the fuel tank to a fuel line at a first pressure. A boost pump is configured to be disposed in the fuel line to receive fuel from the in-tank fuel pump and supply the fuel to one or more downstream components at a boost pressure. An augmentation pump system is configured to be disposed in the fuel line to receive fuel from the boost pump and to supply fuel at a second pressure to one of, at least one fuel consuming component downstream of the augmentation pump system, or an in-tank ejector pump, based on an operational state of the in-tank fuel pump.