Technical data
GENERAL DESCRIPTION
The
JETRCNIC
LE 3.2 electronic
sy-
stem
consists an inductive discharge
transistorized injection system
equip-
bed
with a control unit (CU).
The
ignition,
how,ever
is ensured by an
electronic ignition system equipped
with an electronic power module.
The
data necessary for controlling the
system is
colfecfed
by
means
of
sen-
sors that transform the data into
elec-
trical signais.‘This data
concerns:
l
battery voltage
.
position of the accelerator
throt-
tle
(comoletely
closed or
open)
DESCRIPTION
‘~
.~
For electronic injection 1.7
engines’
~
.
air intake temperature
.
engine
coolant
temperature
.
quantity of air taken in by the
en-
gine
.
quantity of oxygen present in the
exhaust gases
.
engine
r.p.m.
(fromsthe
distribu-
tor)
The electronic CU calculates the
ope-
ning time of the electroinjectors with
relation to the instantaneous r.p.m.
and load condition of the engine.
troinjectors for this time.
Since
the dif-
ference between fuel pressure and air
pressure in the manifold is mantained
constant by a regolator, the quantity
of fuel
injected,
is
proportional to the
delivery time.
Furthemore the injection CU
is
able to
carry
out
from~
time to time certain
operations
considered
necessary
un-
der certain engine conditions
(e.g.
electroinjector for
cold
stafl,
interrup-
tion of fuel delivery when engine is
de-
Having
carried
out
the calculation, the
celerating).
CU
sees
to the opening of the
elec-
The injection CU also controls the deli-
very’
of the
fuel1
p’ump.
-_
,;
JETRONI~C
~LE
3.2 INJECTION SYSTEM
‘,
The
system’,
vvhich
consists of an air
‘,
,’
l
system
ancl
of
a~fuel
system
includes
four electroinjectors
mwhi,ch,
l
a switch on accelerator, throttle
re-
owing to pressure gauge, supply ~
a fuel quantity
dependent’
on ~
i
cognizing
the
two cases of
open
or
the
followirig:!
~
closed throttle
.
A~filter-equiboed
fuel pump their opening time
.
!
an engine Coolant temperature
sen-
.
a pulsation damper whose task
is
an air flow
sensor,
which measu-
sor for injection CU
.
to eliminate pulsations due to
pressure peaks
a8
pressure,
gaug,e
which keeps
constant pressure difference
bet-
ween
f,uel
system and intake ma-
nifold
~
‘,
res ait taken in by engine
(adju-
sted in relation to air
temperatu-
re)
.
supplementary air solenoid valve
suppliyng extra air
,when
the
en-
gine is
cold
.
an rpm
sensor
.
pipes
andl
electrical wiring,
inclu-
ding
remote
control switches and
CU (inserted in air flow
sensor)
. .
.
a
lambda,
probe determining
oxy-
gen
differences,
in exhaust gas,
with
respe,ct
to
thesair
(only for
mo-
dels
with catalytic
converter):
‘!hNITIqN
SYSTEM
This
system consists of:
i
an
el,ectronic
‘power module
t
a high
V~oltage
shock
generating
coil ~
‘1
8,
H
.
a high voltage distributor sup-
‘,
. electrical iwiring at low and
h/gh
plying power to spark plugs
voltage ~
.
four ignition spark plugs
04=2
PA 32 790088330 1
,,
,’
l