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User manual
9
The
following
fuel
oil
specification
is
typical.
For
a
specific
engine
refer
to
manufacturers’
data
sheets
for
fuel
oil
details.
Fuel
Recommended
Physical
Properties
Feature
Viscosity
1.3
to
5.8
centistrokes
(1.3
to
5.8mm
per
second)
at
40°C
(104°F)
(ASTM
D445)
Cetane
Number
40
Minimum
above
0°C
(32°F)
~45
Minimum
below
0°C
(32°F)
(ASTM
D613)
Sulphur
Content
Not
to
exceed
0.5
mass
percent*
(ASTM
D129
or
1552)
Active
Sulfur
Copper
Strip
Corrosion
Not
to
exceed
No.
2
rating
after
three
hours
at
50°C
(122°F)
(ASTM
D130)
Water
and
Sediment
Not
to
exceed
.05
volume
percent
(ASTM
D1796)
Carbon
Residue
Not
to
exceed
0.35
mass
percent
on
10
volume
percent
residuum
(ASTM
D524
or
D189)
Density
42
to
30°
API
gravity
at
60°F
(0.816
to
0.876
g/cc
at
15°C).
(ASTM
D287)
Cloud
Point
6°C
(10°F)
below
lowest
ambient
temperature
at
which
the
fuel
is
expected
to
operate(ASTM
D97)
Ash
Not
to
exceed
0.02
mass
percent
(0.05
mass
percent
with
lubricating
oil
blending)
(ASTM
D482)
Distillation
The
distillation
curve
must
be
smooth
and
continuous
(ASTM
D86)
Acid
Number
Not
to
exceed
0.1
Mg
KOH
per
100
ML
(ASTM
D664)
Lubricity
3100
grams
or
greater
scuffing
BOCLE
test
or
Wear
Scar
Diameter
(WSD)
less
than
.45mm
at
60°C
(WSD
less
than
.38mm
at
25°C)
as
measured
with
the
HFRR
method.
Diesel
Fuel
Property
Definition
Ash
‐
Mineral
residue
in
fuel.
High
ash
content
leads
to
excessive
oxide
build
up
in
the
cylinder
and/
or
injector.
Cetane
Number
‐
Ignitability
of
fuel.
The
lower
the
cetan
number,
the
harder
it
is
to
start
and
run
the
engine.
Low
cetane
fuels
ignite
later
and
burn
slower.
This
could
lead
to
explosive
detonation
by
having
excessive
fuel
in
the
chamber
at
the
time
of
ignition.
In
cold
weather
or
with
prolonged
low
loads,
a
higher
cetane
number
is
desirable.
Sulphur
‐
Amount
of
sulphur
residue
in
the
fuel
.
The
sulphur
combines
with
the
moisture
formed
during
combustion
to
form
sulphuric
acid.
Viscosity
‐
Influences
the
size
of
the
atomized
droplets
during
injection.
Improper
viscosity
will
lead
to
detonation,
power
loss
and
excessive
smoke.
Fuels
that
meet
the
requirements
of
ASTM
or
2.0
diesel
fuels
are
satisfactory
with
fuel
systems.
2.8.2
Fuel
tank
Our
generator
sets
provide
base
frame
style
fuel
tank
for
customer.
The
base
frame
style
fuel
tank
is
installed
with
fuel
tank,
fuel
pipes
and
fuel
level
indicator.
This
fuel
supply
system
does
not
need
customer
to
make
other
installations.
Customers
only
need
to
add
fuel
to
the
base
frame.
Users
who
intend
to
self
manufacture
the
fuel
tank
shall
use
stainless
steel
or
steel
plate
to
make
the
backup
tank,
do
not
make
painting
or
galvanization
inside
of
the
fuel
tank
so
that
to
avoid
the
possible
chemical
reaction
between
these
kind
of
materials
and
diesel,
which
may
generate
the
material
harmful
to
the
generator
set
and
decrease
the
quality,
Merit
Rating
and
combustion
efficiency
of
diesel.
In
addition,
the
configuration
of
fuel
tank
assembly
shall
be
as
follows:
◆
Air
ventilation
pipe
above
fuel
tank
surface
◆
Manhole
on
the
top
surface
of
fuel
tank
◆
Watch
window
for
fuel
level
◆
Discharge
valve
at
the
bottom
of
fuel
tank
◆
Ground
cable
between
fuel
adding
hole
and
fuel
tank
◆
Separate
panel
with
holes
between
fuel
supply
area
and
fuel
return
area,
so
that
to
reduce
heat
exchange
◆
The
end
of
fuel
supply
pipe
shall
be
50mm
above
the
bottom
of
base
frame
so
that
to
avoid
the
deposit
and
water
at
the
bottom
of
fuel
tank
being
sucked
into
fuel
supply
pipe.
◆
Part
of
the
generator
sets’
fuel
level
shall
be
higher
than
the
position
of
fuel
injector,
so
that
to
avoid
fuel
return
from
fuel
injector,
which
cause
start
difficulty.
2.7.2
Installation
of
fuel
tank
◆
The
position
of
the
fuel
tank
shall
ensure
the
maximum
suction
fuel
head
is
no
less
than
2
meters.
Suction
fuel
head
of
the
fuel
transfer
pump
shall
be
calculated
from
the
bottom
of
the
fuel
tank.
◆
The
position
of
the
fuel
tank
shall
ensure
maximum
return
fuel
head
no
less
than
1.5
meters.
Return
fuel
head
shall
be
calculated
from
the
top
of
the
base
frame.
◆
The
arrangement
of
the
fuel
pipe
shall
avoid
the
fuel
being
affected
from
the
heat
elimination
from
generator
set
too
much.
◆
The
maximum
temperature
of
the
fuel
before
fuel
pump
shall
be
lower
than
60
degree
Celsius.
◆
No
leakage
of
fuel
and
air
is
allowed
in
the
fuel
inlet
and
fuel
return
pipe.
This
is
very
important.
◆
Hose
need
to
be
used
to
connect
generator
set
with
fuel
transfer
pipe.
If
the
generator
set
use
soft
connection
(through
vibration
reduction
unit),
hose
shall
be
used.
◆
When
engine’s
fuel
inlet
pipe
is
above
6
meters
and
Summary of Contents for DHY11KSE
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