Arrangement for pumping fuel out of a supply tank to an internal combustion engine
AssigneeRobert Bosch GmbH
InventorsStephan Kleppner, Ansgar Seitz
Life of this patent
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Abstract
An arrangement for pumping fuel out of a supply tank to an internal combustion engine having an electrically driven pumping unit which is disposed in a ram pot inserted into the supply tank. The ram pot is filled with fuel from the tank by means of a jet pump provided on its bottom; the intake opening of the jet pump is preceded by a filter that is formed by at least one ring of teeth axially protruding from the bottom of the ram pot, which enclose an intake chamber into which the intake opening of the jet pump protrudes.
Claims10
An arrangement for pumping fuel out of a supply tank (1) to an internal combustion engine (49), comprising an electrically driven pumping unit (11), which has an intake connector stub (33) and an outlet opening (34) that communicates at least indirectly with a supply line (47) to the engine (49), the pumping unit (11) is disposed in a ram pot (3), the ram pot is retained by a bottom (8) on a bottom (9) of the supply tank (1) by means of a resilient element (7), the ram pot can be filled with fuel from the tank (1) by means of a jet pump (61), an intake opening (65) of the jet pump (61) is preceded by a filter, the filter is formed by at least one ring of formed-protrusions (67), which protrude axially from the bottom (8) of the ram pot (3), to a bottom of the supply tank, a flow cross section is provided between said protrusion which forms a gap filter, protrusions in combination with said ram pot housing enclose an aspiration chamber (69) from which an intake opening (65) of the jet pump (61) aspirates fuel.
Dependencies are inferred from the claim text.