Water is removed and kept at a minimum by
draining tanks and having a water separator before or included with
the fuel filter.
Solid inorganic contaminates are kept to minimum
by the fuel filter.
contamination - Bacteria, yeasts and fungus is eliminated by fitting
a De-Bug Unit before the primary fuel filter. The fuel delivered to
the engine and the also the fuel returned to the tank is free of
Twenty-seven (27) individual species
of bugs can occur in diesel fuel:
hydrocarbons and reproduce 'asexually' by binary fission;
swelling in size as they feed, they then separate into two
cells. In this way microbes double their numbers every 20
minutes, one spore becomes 262,144 in 6 hours. Typical
bacteria known to utilise hydrocarbons are Pseudomonas
aeruginosa, other Pseudomonas species, Flavobacterium spp.,
Acinetobacter spp., Alcaligenes spp., Micrococcus spp.,
Arthobacter spp., Corynebacterium spp., Brevibacterium spp.,
onto the parent cell, then eventually separate. Reproduction
takes several hours and yeast prefer acidy environments. Typical
yeasts growing on hydrocarbons are Candida spp., Saccharomyces
spp., Torula spp., Torulopsis spp., Hansenula spp.
the form of branched hyphae, a few microns in diameter, forming
thick, tough, intertwined mycelial mats at fuel/water
interfaces. Typical moulds which degrade hydrocarbons are
Penicillium spp., Aspergillus spp., Fusarium spp., Monilia spp.,
Botrytis spp, Cunninghammella spp., Scopulariopsis spp.,
Cladisporium resinae, Hormonicus resinae.
Bacteria (SRB) are a specific
group of bacteria utilizing simple carbon, not hydrocarbons, and
require the activity of other microbes in a consortium. SRB
produce hydrogen sulphide. SRB are also directly involved with
many microbial corrosion reactions and can cause sulphide
souring of stored distillate products.
Restricted fuel flow,
uneven atomization and
incomplete combustion caused by slime build up in the fuel lines,
filters and injector needles.
develop cool spots causing uneven
wear to the rings and cylinder bores. Acids and gums can eventually
leach into the lubricating oil, causing corrosion of the crank
species create acids
that remove ions from the atomic structure of metals: this is the main
cause of corrosion in fuel tanks, lines, pumps and injectors.
The presence of bugs in fuel has a definite effect on the quality of
diesel and is responsible for increasing operating costs
maintenance required on filters, fuel pumps and injectors
Increase equipment running
Decrease service life of all fuel system
By fitting a De-Bug Clean Fuel Unit all diesel
by running the engine or a recirculation pump, the fuel is kept
clean and fresh.