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The automatic shut off nozzle shuts off when pressure in the fuel system reaches 9 psi (62 kPa) or greater. Due to the pressure introduced into the fuel tank, most tanks require additional structure to prevent bursting or damaged weld joints. This bursting is both a safety and environmental hazard.
A breakaway valve is also fitted to the hose so that the nozzle and hose will detach and fuel flow will stop if a motorist drives off with the nozzle still in the filler. Nozzles are usually color-coded to indicate which grade of fuel they dispense, but the color-coding differs between countries and even retailers.
Bolt Shut-off Nozzle type BHP - pneumatic or hydraulic actuation. A shut-off bolt, positioned perpendicular to the melt channel moves up and down according to actuation, and thus shuts off/opens the melt flow. This nozzle type has a single melt channel. It therefore does not require rerouting of the melt around the shut-off mechanism.
Which in turn causes the injector nozzle needle to shut; hence no more fuel is injected. Summary The start of an injection is controlled by the solenoid closing point, and the injected fuel quantity is determined by the closing time, which is the length of time the solenoid remains closed. The solenoid operation is fully controlled by the ...
This allows fuel to be shut off from the sprayer by electrical control. It helps avoid drips when the valve is closed. It also eases the purging of the burner (and any boiler) of fuel mist during startup, or while restarting after a misfire. If the burner were not purged the oil/air mixture could explode.
Stock image of a gasoline fuel nozzle. More than 150 million cases of mental health disorders — including ADHD , anxiety and depression — may have been caused by lead in gasoline.
Dieseling or engine run-on is a condition that can occur in spark-plug-ignited, gasoline-powered internal combustion engines, whereby the engine keeps running for a short period after being turned off, drawing fuel through the carburetor, into the engine and igniting it without a spark.
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