there is always a fixed cost of producing a product then cost of
blends , even if a company sells in bulk the cost wont be so
drastically low , not to mention the cost involved at the retial
end , land electricity storage workers etc , so how come taxi
drivers are offered cheap diesel , dont know how but this is what i
found on net
1. Can you use kerosene instead of diesel?
A A diesel engine will run fine on kerosene. If you are going
to run it on kerosene for an extended amount of time you might want
to put some lubricant additive in with it.
(http://wiki.answers.com/Q/Can_you_use_kerosene_instead_of_diesel)
2. KEROSENE BLENDED DIESEL FUEL
Kerosene is frequently blended with diesel fuel to improve winter
fuel operability. A kerosene blended diesel fuel is one that
combines #1 diesel fuel (i.e. kerosene) with #2 diesel fuel. The
ratio of diesel fuel to kerosene is typically found in the range of
80:20, 70:30, 60:40, or 50:50.
Other Disadvantages of Kerosene Blending
Kerosene has a lower BTU content than #2 diesel fuel which results
in a decrease in engine power and fuel economy. Kerosene has an
average BTU content of approximately 133,500 BTU per gallon and #2
diesel fuel has an average BTU content of approximately 139,500 BTU
per gallon.
When using a 50:50 kerosene blend, the BTU content is approximately
136,500 or two percent less than #2 diesel. The resulting power
loss is approximately two percent. Fuel economy will also decrease
by at least two percent.
Kerosene provides only minimal increased winter fuel operability.
Kerosene will decrease the Cold Filter Plug Point (CFPP) by 2ºF for
every 10% kerosene used. Diesel fuel additives, on the other hand,
will reduce the CFPP by as much as 35°F- 45°F.
Kerosene contains less lubricity than #2 diesel fuel. Diesel fuel
lubricity is a major concern because of Ultra Low Sulfur Diesel
(ULSD). ULSD contains significantly less lubricity than Low Sulfur
Diesel (LSD). As a result, metal components in the engine fuel
system, including fuel pumps and injectors, are susceptible to
premature failure. Many diesel fuel additives will actually
increase overall fuel system lubricity.
Kerosene contains less cetane than #2 diesel fuel. Cetane is the
most universally accepted measure of diesel fuel ignition quality.
Proper ignition during the combustion cycle is essential for
optimum operation, economics, and durability. Insufficient levels
of cetane lead to hard starting, longer warm-ups and heavy white
smoke.
Summary of Disadvantages of Kerosene Blending
1) Increased Cost
2) Decreased Engine Power
3) Decreased Fuel Economy
4) Inadequate Winter Fuel Operability
5) Decreased Lubricity
6) Decreased Cetane
(http://www.ezoil.com/Resources/Kerosene_Blended_Diesel_Fuel.html)
