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The sulfur level in diesel
is being brought down due to environmental reasons |
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Lowering of sulfur by hydro-
processing leads to removal of certain polar compounds
from diesel which are associated with deterioration of
lubricity of diesel |
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Equipment can be designed
for low fuel lubricity, but sufficient lubricity is required
for existing equipment |
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Lower fuel lubricity can
cause failure in injection pumps |
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The lubricity improver
SERVO® -LI developed by IndianOil is a convenient way to
restore lubricity in ultra low sulfur diesel. |
| 1. |
High Frequency Reciprocating
Rig Test (HFRR) |
| |
Wear scar diameter (WSD)
at Temp.600 75 min, 2N Load,
Amp.1mm, Freq. 50Hz. is the measure of lubricity performance
of the lubricity additive in low sulfur diesel fuel |
| 2. |
Performance Requirements
of Lubricity Additive SERVO® -LI {No Harm Test} Antagonism
with Engine Oil |
| |
(Method A)
Fuel additive +engine oil (TBN 10-12) + fuel blended in
ratio of 1:2:20 and kept at 500 C for 4Hrs.
(Method B)
Fuel additive + engine oil blended in ratio 1:1v/v and
kept at 900 C for 72hrs. A portion of mixture then dissolved
in fuel in ratio of 1:25v/v.
Check the visual appearance of sample, filtration rate
and amount of sediments by filtering 100 ml portion of
mixture through 0.8-micron filter paper.
|
|
APPEARANCE |
FILTRATION
TIME (sec.) |
SEDIMENTS
(g) |
| METHOD
'A' |
Clear, transparent |
40 |
0.0024 |
| METHOD
'B' |
Clear, transparent |
42 |
0.0020 |
|
