Bacaan bagus
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Biodiesel:
The good, the bad…
and additives
there are potential problems when using it in vehicles.
Biodiesel blends can show an
increase in water separation and fuel foaming,
compared to pure fossil fuels. In addition, blending
with low-stabilitybiodiesel can lead to fuel system
problems, such ashigher levels of
injector deposits and corrosion
arising from the generation of
low- molecular weight acids.
OEMs and fuel injection
equipment manufacturers have
reported this type of damage in
the field. In addition, advanced
direct injection engines may
lose significant power when
poor quality biodiesel blends are
used. An effective performance
diesel fuel additive can help
guard against such problems.
Fuel Injector
Cleanliness
A key and frequently raised concern about using biodiesels
is their impact on injector cleanliness and the potential for
serious injector coking and nozzle fouling.
Impact on water
separation and
corrosion
It is well known that blending biodiesel into mineral fuel
results in reduced water separation capability, which
can cause problems such as fuel filter blocking, increased
fuel system corrosion and microbial contamination.
Foaming
Blending FAME into conventional mineral diesel fuel
can worsen the foaming tendency, which becomes
evident when filling a vehicle’s fuel tank at a service station.
is well knownthat the unsaturatedfatty acidsfound intypical feedstocks,such as rapeand soy, arethe cause ofthis
susceptibility. These unsaturated fatty acids mayreact with atmospheric oxygen,forming peroxides and result in
a variety of problematic degradation byproducts,including corrosive, low molecularweight acids and biopolymers.
These byproducts arethe principal cause of sludgeand lacquer in diesel fuel injection systems, and they also
contribute to fuel filter plugging.For this reason, vehicle and fuelinjection equipmentmanufacturers have expressedconcern about the careful
control of oxidation stability.
In Europe, biodiesel oxidation stability is controlled through the Rancimat test in the EN 14214
specification, with a minimum induction time requirement ofsix hours. Use of the Rancimat
method is also being explored in the United States, where alower three-hour induction time
is being considered for the predominantly soy-based methyl esters produced there.
Biodiesels that do not meetthe minimum induction timestandard need to be stabilized with an antioxidant additive.
Although an untreated biodieselfuel made from a feedstocksuch as rape may meet theEuropean specification when itis produced, its oxidative
stability can rapidly degradeduring distribution and storage
(Figure

, making use of an antioxidant advisable
selengkapnya bisa dibaca di file pdf nya
So apa yg ditulis di atas memang saya temui dalam kenyataan, filter screen di tangki BBM lama2 jadi penuh sludge dan warna Biosolar jika disimpan di botol lewat 2 minggu bisa berubah.
Maka itu sy selalu tambah additive kimia utk Biosolar