Fast fuel system

Fast fuel system

A Fast fuel system allows speedy refuelling of vehicles. Most large earthmoving and mining vehicles with diesel fuel tanks over 150 U.S. gallons (568 liters) are equipped with fast refueling systems. Fast refueling systems utilize an automatic shut off fuel nozzle, receiver and level control device. Fast refuel systems operate by connection of a fill nozzle to the vehicle's fuel tank and a source mounted pump delivers fuel into the tank at rates up to 150 U.S. gallons (568 liters) per minute.

Fast fill systems in general allow for ground level refueling and automatic shut-off upon a full tank. Ground level refueling increases operator safety as climbing onto vehicles during refueling is not necessary as the fill point receiver may be located in a location on the vehicle which is easily accessed.

Pressurized refuel system

Pressurized refuel systems were developed in the 1950’s and installed on almost all large vehicles. Caterpillar introduced a non-pressurized refueling system in 1998 on the Caterpillar D11 track type tractor replacing the original pressurized system.

Pressurized refuel systems operate via sealing the fuel tank at the appropriate fill point thus creating internal pressure. 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.

Non-pressurized refuel system

Non-pressure refuel systems operate via a closed loop system where all pressure is contained interior to signal lines, level control, and a shut-off valve. When the fuel tank fill point is reached, a bleed line signal is closed and back pressure is applied to a diaphragm valve at the fuel entry point. Due to differential pressure and an internal spring, the diaphragm is forced closed and cannot be overfilled. Non-pressurized refueling systems do not require tank pressurization for automatic nozzle shut-off, thus allowing their use on thin-walled metallic and composite material fuel tanks.

Caterpillar found that the non-pressurized refuel system reduced fuel spills and provided more accurate filling when used with worn automatic refuel nozzles. David Juleff of Shaw Development, LLC [ [ Shaw Development - Fluid Products - Fast Fill Refueling Systems ] ] was the design engineer that tailored an aerospace non-pressurized refuel system to be first introduced on the Caterpillar D11 track type tractor in 1998.

Non-pressurized refueling systems meet European directive 97/23/EC [] which permits their use in the European Union as any tank pressurization during refuel is less than 7.3 psi (0.5 bar).

Installation procedures for non-pressurized fast fill systems are documented in "Fast Fill Fueling Installation for Off-Road Self-Propelled Work Machines SAE J176" [ [ Fast Fill Fueling Installation for Off-Road Self-Propelled Work Machines ] ] . Proper installation is important to maintain operator safety and proper functionality of the system.


Non-pressurized Shaw Development fast fill system installed on a composite fuel tank.


Wikimedia Foundation. 2010.

Нужна курсовая?

Look at other dictionaries:

  • Fuel system — Kraftstoff Duchfluss Messer für Flugzeuge Das Kraftstoffsystem (engl. fuel system) eines Flugzeugs dient der Versorgung eines motorbetriebenen Flugzeugs mit Kraftstoff. Je nach Flugzeugtyp und dessen konstruktiver Auslegung, ob kunstflugtauglich… …   Deutsch Wikipedia

  • Fuel injection — Fuel rail connected to the injectors that are mounted just above the intake manifold on a four cylinder engine. Fuel injection …   Wikipedia

  • Fuel efficiency — is a form of thermal efficiency, meaning the efficiency of a process that converts chemical potential energy contained in a carrier fuel into kinetic energy or work. Overall fuel efficiency may vary per device, which in turn may vary per… …   Wikipedia

  • Fuel oil — An oil tanker taking on bunker fuel. Fuel oil is a fraction obtained from petroleum distillation, either as a distillate or a residue. Broadly speaking, fuel oil is any liquid petroleum product that is burned in a furnace or boiler for the… …   Wikipedia

  • Fast Ferry Scandal — The Fast Ferry Scandal, also referred to less formally as the FastCat Fiasco , was the name given to a political scandal in the Canadian province of British Columbia in the 1990s relating to the construction of a fleet of high speed ferry vessels …   Wikipedia

  • Fuel (song) — Infobox Single Name = Fuel Artist = Metallica from Album = ReLoad B side = Sad But True (live) / Nothing Else Matters (live) Wherever I May Roam (live) / One (live) Until it Sleeps (live) / Fuel (live) / Fuel (demo) Released = March 1998 Format …   Wikipedia

  • Fuel Dumping — Notablassventil eines Airbus A 340 311 Treibstoffnotablass eines …   Deutsch Wikipedia

  • Fuel calculation — Die Artikel Treibstoffberechnung, Dry Operating Weight, Operating Weight, Take Off Weight und Landing Weight überschneiden sich thematisch. Hilf mit, die Artikel besser voneinander abzugrenzen oder zu vereinigen. Beteilige dich dazu an der… …   Deutsch Wikipedia

  • Fast Flux Test Facility — The Fast Flux Test Facility is a 400 MW nuclear test reactor owned by the U.S. Department of Energy.It is situated in the 400 Area of the Hanford Site, which is located in the state of Washington.HistoryThe construction of the FFTF was completed… …   Wikipedia

  • Gas-cooled fast reactor — The Gas Cooled Fast Reactor (GFR) system is a nuclear reactor design which is currently in development. Classed as a Generation IV reactor, it features a fast neutron spectrum and closed fuel cycle for efficient conversion of fertile uranium and… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”