Fuel system having a valve upstream of a jet pump
AssigneeDelphi Technologies IP Limited
InventorsThomas R. MARTIN, Abel MELGAR
Life of this patent
Estimating the term…
Abstract
A fuel system includes a fuel reservoir configured to be located within the fuel tank such that the fuel reservoir defines a fuel reservoir volume which is a subset of a fuel tank volume; a fuel pump configured to pump fuel from within the fuel reservoir volume to the fuel consuming device through a fuel supply line; a jet pump configured to 1) receive excess fuel, through a fuel return line, which had been supplied to the fuel consuming device through the fuel supply line and 2) aspirate fuel into the fuel reservoir volume from the fuel tank volume; and a valve which allows fuel flow in both directions between the fuel return line and the jet pump when a differential pressure across the valve is greater than or equal to a predetermined threshold.
Claims6
A fuel system for supplying fuel from a fuel tank defining a fuel tank volume to a fuel consuming device, said fuel system comprising:
- a fuel reservoir configured to be located within said fuel tank such that said fuel reservoir defines a fuel reservoir volume which is a subset of said fuel tank volume;
- a fuel pump configured to pump fuel from within said fuel reservoir volume to said fuel consuming device through a fuel supply line;
- a jet pump configured to 1) receive excess fuel, through a fuel return line, which had been supplied to said fuel consuming device through said fuel supply line and 2) aspirate fuel into said fuel reservoir volume from said fuel tank volume;
- and
- a valve which allows fuel flow from said fuel return line to said jet pump when a differential pressure across said valve is greater than or equal to a predetermined threshold and which also allows fuel flow from said jet pump to said fuel return line when said differential pressure across said valve is greater than or equal to said predetermined threshold.
A fuel system for supplying fuel to a fuel consuming device, said fuel system comprising:
- a fuel tank which defines a fuel tank volume which is configured to hold fuel;
- a fuel reservoir located within said fuel tank such that said fuel reservoir defines a fuel reservoir volume which is a subset of said fuel tank volume;
- a fuel pump configured to pump fuel from within said fuel reservoir volume to said fuel consuming device through a fuel supply line;
- a jet pump configured to 1) receive excess fuel, through a fuel return line, which had been supplied to said fuel consuming device through said fuel supply line and 2) aspirate fuel into said fuel reservoir volume from said fuel tank volume;
- and
- a valve which allows fuel flow from said fuel return line to said jet pump when a differential pressure across said valve is greater than or equal to a predetermined threshold and which also allows fuel flow from said jet pump to said fuel return line when said differential pressure across said valve is greater than or equal to said predetermined threshold.
Dependencies are inferred from the claim text.