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Core working principle of the fuel nozzle
2026-02-06
Fuel delivery: The fuel pump provides pressure, propelling the fuel through the pipeline and out from the nozzle.
Self-appointment mechanism:
Venturi effect: When fuel flows through a narrowed valve, its flow velocity increases and the pressure decreases, creating a low-pressure zone.
Lever principle: Changes in pressure within the low-pressure zone cause the diaphragm to deform, which in turn rotates the lever and ultimately closes the main valve.
Oil and Gas Recovery: Using a vacuum pump and oil-gas recovery ports, volatile hydrocarbons are drawn back into the fuel tank, achieving a 1:1 ratio between refueling and gas recovery.
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