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US 6,443,693 B1Granted
Fuel Pump
AssigneeMannesman VDO AG
InventorKarl Eck
Life of this patent
Estimating the term…
Abstract
A fuel pump for a motor vehicle has an outlet duct leading to an internal combustion engine and a connection leading to an ejector, and two delivery chambers which are separate from one another. The delivery chambers are concentric so that one surrounds the other. The fuel pump is simple to construct and can be manufactured at favorable cost.
Claims16
A fuel pump for arrangement in a fuel tank for delivering fuel to an internal combustion engine, comprising:
- a pump housing with an inlet duct, an outlet duct, and part-annular ducts;
- a rotor rotatably arranged in said pump housing and comprising vane chambers, each vane chamber comprising a ring of guide vanes arranged on said rotor, said vane chambers and said part-annular ducts forming first and second delivery chambers;
- and
- an ejector arranged for supplying fuel within the fuel tank, said pump housing further comprising a connection for supplying fuel to said ejector, wherein said first delivery chamber is connected to said outlet duct, said second delivery chamber is connected to said connection, and said first and second delivery chambers are separated from each other.
1 more element
Dependencies are inferred from the claim text.