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OPERATION
N° MA.IE. 144-00 :
(]haracteristks
of tbc
«
L-Jctronic
» clectroujc
Joel injectio;i system.
«
L
-
J
E T R
0 N 1
C
»
The
«
L-ietronic
»
system
is
an
intermittent low-pressure injection
system
which injects petrol into
the inlet
man if o id
The
system measures
the
quantity
of air
drawn
in by
the engine.
which is the main parameter for
coiculating
the amount
of
fuel.
to be injectecL
The
metering
of the fuel
is
carried
out
by electro-magnetically
triggered
injectors.
These are under
constant fuel
pressure. The quantity
of fuel injecte& is proportional to thé duration
of
injection which
in
tum is
optimally
determined for any
given
engin
operating condition by an
electronic
control
unit
(
E.C,U.
)
from information
supplied by several
electric
sensors.
One of
the
principal contributions of the
«
L-Jetronic
»
system is
the
reduction
in
the level
of pollution of
the
exhaust
emissions.
The
«
L-Jetronic
»
system
is mode up of the following components
1:
Electric fuel
pump
2: Fuel
filter
3:
Thermal
switch
4:
Double relay
5
:
Electronic
control unit
(
E.C.U.
6
:
Supplementary
air control
7
:
Pressure regulator
8
:
Injectors
9
:
Coid-start
injector
10.
Idling speed adjustment
screw
11 :
Air-flow sensor
(
with incorporated air temperature sensor)
12:
Switch on throttle butterfly
spindle
13
:
Additional resistors
for the injectors (8)
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