Fluid handling – Siphons – With flow starting – stopping or maintaining means
Patent
1996-07-01
1999-11-09
Rivell, John
Fluid handling
Siphons
With flow starting, stopping or maintaining means
137147, 137574, 123510, F02M 3302, F04F 1000
Patent
active
059794852
ABSTRACT:
A fuel delivery system for vehicles with more than one fuel tank or a single tank with separate sections under at least some fuel level conditions. The system has an electric fuel pump disposed in the fuel container and a jet pump connected to the electric fuel pump with fuel pickups connected to the jet pump through a siphon. The electric fuel pump powers the jet pump to fill the siphon with liquid fuel and draw fuel through the pickups which are spaced apart in separate sections of the fuel container. When the siphon is completely filled with liquid fuel and the jet pump is operating, any difference in the heads or fuel levels in the sections of the fuel container will cause fuel to flow through the siphon from the section with the greater head to the other section of the tank. This flow, due to the difference in pressure associated with different fuel levels, continues until the fuel levels and, hence, the pressures are substantially the same in each section of the container. Therefore, a single fuel level sensor can be used to monitor the total amount of fuel remaining in the tank or tanks. An air break interrupts the operation of the siphon when the jet pump is not operating to maintain the same fuel level in the sections or tanks even though the vehicle and hence the container or tanks are inclined when the vehicle and pumps are not operating.
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Oberheide G. Clarke
Tuckey Charles H.
Rivell John
Walbro Corporation
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