Vehicle fuel tank with reserve section near pump - has return fuel flow driving venturi pump to top up reserve section

摘要

The electrically driven fuel pump (7) is mounted in the reserve section (3) and is provided with fuel even with the main tank at a low level. This is achieved by having the surplus return flow of fuel driving a venturi pump (23) in the bottom of the tank and filling the reserve section (3). A non-return valve (30) at the bottom of the reserve section fills the reserve when first filling the tank. A higher fuel level in the main tank compared with the reserve section opens the non-return valve. A higher hydraulic pressure in the reserve section holds the non-return valve closed. The pump output duct (15) and the return flow duct (20) are mounted into the fuel tank cover. ADVANTAGE - Fuel pump is constantly primed; no fuel starvation problems if parked on slope.