Diesel fuel pump module
AssigneeRobert Bosch GmbH
InventorsPaul E. Fisher, Paul Mason, Charles Newell, III
Life of this patent
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Abstract
A diesel fuel pump module for use within a diesel fuel tank includes a reservoir defining a fuel storage volume. A jet pump having an inlet is positioned within the reservoir and configured to pump fuel from the tank into the reservoir. The module further includes an electric pump having an inlet and an outlet, and an air separation chamber connecting the electric pump outlet to the inlet of the jet pump.
Claims20
A diesel fuel pump module comprising:
- a reservoir defining a fuel storage volume;
- a jet pump positioned within the reservoir and configured to pump fuel from the tank into the reservoir, the jet pump including an inlet;
- an electric pump having an inlet and an outlet;
- and
- an air separation chamber connecting the electric pump outlet to the inlet of the jet pump.
A method of operating a jet pump, the jet pump having a nozzle and operable to pump diesel fuel from a tank into a fuel pump module reservoir, the method comprising:
- from a diesel fuel mixture containing a first portion of gas, generating a diesel fuel mixture containing a second portion of gas, wherein the second portion of gas by volume within the diesel fuel mixture containing the second portion of gas is greater than the first portion of gas by volume within the diesel fuel mixture containing the first portion of gas;
- and
- supplying some of the diesel fuel mixture containing the second portion of gas to the jet pump.
Dependencies are inferred from the claim text.