Chapter 3 Fuel Injection Equipment
3. Fuel Injection Pump Outline
i 4LHA Series
3. Fuel
Injection
Pump
Outline
Control
lever
Flyweight
Drive shaft
Feed
pump
Roller
holder
Full-load
adjusting screw
Governor
lever
Magnet
valve
Distributor head
Plunger
Cam
disk
Timer
Plunger
spring
Delivery
valve
:
ig.
1
VE
type injection pump construction
With the PE type (in-line type) injection pump,
the number of pump elements (plunger
assemblies)
must be the same as the number
of engine cylinders. However,
with
the VE type
(distributor type) injection pump, the number of
plungers has no relationship to the number of
engine cylinders, and there is only one plunger.
This
single plunger reciprocates while rotating,
and
fuel oil is injected
into
each cylinder
through the injection pipes in accordance
with
the engine's
firing
order.
As
well as this, the governor, timer, feed pump
etc.
installed on the outside of the PE type in-
jection pump are equipped
within
the VE type
injection pump.
In comparison
with
the PE type, the VE type
injection pump has
less
than half the number
of component parts, and was developed in
order to satisfy the need for a
small,
light-
weight and high-speed injection pump.
In response to operator requirements, it was
possible
to design a pump
with
acceleration
close
to
that
of gasoline vehicles.
3-1-4
To Next Page
Loading...
Need help?
General
