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| Price | Negotiated |
| MOQ | Negotiable |
| Delivery Time | 5 - 8 work days |
| Brand | Caterpillar |
| Place of Origin | USA |
| Model Number | 3306 |
| Packaging Details | Neutral Package or Fumigation Free |
| Payment Terms | D/P, T/T |
| Supply Ability | 5 pieces |
| Condition | Used | Engine model | 3306 |
| Place of Origin | USA | Packaging Details | Neutral Package or Fumigation Free |
| Color | Same as pictures | Excavator model | E330B |
| Material | Steel | Model Number | 3306 |
| Supply Ability | 5 pieces | Brand Name | Caterpillar |
| Payment Terms | D/P, T/T | Type | Diesel Engine |
| Price | Negotiated | Delivery Time | 5 - 8 work days |
| Product name | Used Fuel Injection Pump | Part number | 149 - 9851 |
3306 Used Fuel Injection Pump For Excavator E330B 149 - 9851
Specification
| Part name | Engine fuel pump |
| Pump code | 149 - 9851 |
| Pump number | 153 - 5739 |
| Condition | Original Used |
| Test staus | Normal |
| Engine Type | Diesel |
| Injection | Direct injection |
| Quality | High quality |
Description
Definition of Inline Injection Pump
Fuel
feeds
are
fuel
enter-exit
door,
there
are
three
fuel
feeds
inlet
feed,
used
as
fuel
entrance
from
the
tank
to
the
pump
output
feed,
used
as
the
fuel
exit
to
the
injector
in
high
pressure
conditions
return
feed,
used
to
drain
the
remaining
fuel
that
is
not
pressed
into
the
injector
And how does it work?
1. The outside mechanism of injection pump
Generally, there is a mini pump that is used to transfer fuel from the tank into the injection pump. This pump works mechanically, meaning it is driven by the crankshaft engine.
So, to run the fuel flow we need to crank the engine.
When
the
crankshaft
rotates,
the
mini
pump
will
send
diesel
fuel
from
the
tank
into
the
injection
pump
through
the
inlet
feed.
From
the
inlet
feed,
the
fuel
directly
fill
the
fuel
barrel
and
it
is
ready
to
be
pressed.
2. The injection pump mechanism
The
pump
camshaft
is
connected
to
the
engine
crankshaft,
so
that
when
the
engine
cranks
automatically
the
pump
camshaft
rotates.
This
rotation
will
move
the
plunger,
so
that
the
plunger
is
pressed
upwards
and
as
a
result
the
fuel
that
is
already
in
the
fuel
barrel
is
pressed
with
high
pressure
and
enters
the
injector.
When the cam has finished pressing the plunger, the plunger returns to the bottom position. This will reopen the fuel barrel chamber, so that the fuel from the inlet feed filling the fuel barrel directly.
3. Engine RPM setting mechanism
To
adjust
engine
RPM
on
conventional
diesel,
it
is
done
by
adjusting
the
amount
of
fuel
injected
by
the
injector.
In this case, the control is located in the fuel barrel. How much the amount of fuel in the fuel barrel when it is pressed will affect the engine RPM.
it is the task of rack and pinion. These two components will regulate the amount of fuel in the fuel barrel by regulating fuel disposal through the return feed.
The
amount
of
fule
is
less
(Low
RPM)
The
amount
of
fuel
is
more
(high
RPM)
So, there is a fuel path inte plunger from the fuel barrel leading to the return feed.
This path is made with a certain slope, so that when the angle of the plunger is rotated, it will affect the amount of fuel contained in the fuel barrel
To be clearer you can see the picture (viewed from side)
a. when low RPM
The amount of pressed fuel is lower, so the angle of plunger can be seen from the picture.
2. when high RPM
The amount of pressed fuel is more, so the angle of plunger can be seen from the picture.
