Internal-combustion engines – Charge forming device – With fuel pump
Reexamination Certificate
2006-01-24
2006-01-24
Miller, Carl S. (Department: 3747)
Internal-combustion engines
Charge forming device
With fuel pump
C123S514000
Reexamination Certificate
active
06988491
ABSTRACT:
The invention relates to a pump unit arranged in an inner tank (3) of a fuel tank, comprising a fuel pump (5) which is used to pump fuel to the internal combustion engine of a motor vehicle; an ejector pump (21) which is connected to the fuel pump (5) and used to pump fuel out of the fuel tank into the inner tank (3); and at least one filter element (20:31) which is used to filter fuel, wherein a housing part which is connected to the fuel pump (5) is provided with at least one channel (30;33;35;47) for guiding said fuel. In order to simplify the structure of the pump unit (2) and to enable substantial pre-assembly, the housing part (24;40) is configured in such a way that it can hold the at least one filter element (20;31), and the channel (30;33;35;47) is exclusively guided inside the housing part (24; 40) from the ejector pump (21) and/or the fuel pump (5) to the filter element (20;31).
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Burhenne Sabine
Deichmann Johannes
Deubner Joerg
Marx Peter
Osburg Hans-Peter
Mayer Brown Rowe & Maw LLP
Miller Carl S.
Speer Richard A.
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