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Review of electronic
EZ-l02K
was
i
ntroduced
fuel
injection
system on the American
one
of
the control unit terminals when the engine temperature becomes
timing if the throWe is
closed.
year before being
superseded by more up-to-date variants
EZ-117K
is very similar
lH..Jetronic
2.2
fuel
injection system.
8230 FT
variant
features a knock-controlled fuel enrichment
variant is
equipped
w ith a thermostat which activates a timing advance function to
heating
.
EZ-118K
differs most from the
tween
the
intake
manifold and
by an air mass meter via
throttle
pulley
rather
than a
8230 E
and
B
230 K engines.
va riants are equipped with a temperature
the
fuel supply under engine braking conditions.
used
on carbura
ted
engines
EZ-115K
has been designed especially for the 8280 engine. Its
of cylinders), a position
speedJposition
pick-up mounted
apply tim ing
compensation
and
by advancing
8280 engine to replace the
Jetronic 2.2 on both the
EZ-116K
is
a refinement
tracing and monitoring
present may be displayed w ith the
troduced in 1988
on
the 1&valve 8234F
engines in the
700 series,
wheel instead of a Hall generator
jection system (LH·Jetronic
Manufactured
by
8endix,
conjunction with the Regina fuel
Compensation functions
However, most electronic ignition systems are equipped
just the
timing to compensate for unusual running conditions. Thus.
ignition
system
with
compensa
mixture is ignited by a source other than the
signal to the
control unit commanding it to
tle
switchlidling switch
'idling program
'
to
ensure optimum
mize exhaust
emissions.
unit to
apply
the appropriate timing compensat ion when the
ignition systems
-
II
in
1984
in conjunction
market.
The
fi
rst EZ-K
system
to EZ-102K
in
configuration,
The
system
other systems in
control
unit to
supply
the
fuel
system control
switch
mounted
on
Two idling compensa
sensor,
(now
with Pierburg
detector for
No.
1
cylinder,
at
the flywheel. Depending on
by retarding the ignition when the engine is
B
28,
and
is,
therefore,
E
and F
variants.
of other
EZ-K
systems.
.
The
control unit continuously
aid of a
d iagnostic un it
engine used in
EZ-116K
equipped
in
the
distributor.
2.41.
the
Rex-I
system
is
equi
injection system,
tion
functions. In the
spark
retard the
(G). When the
engine is idling. the control
comfort,
while
The
signal supplied
with the
launch of
the 760 Turbo with
EZ-102K
is equipped
with a thermostat which transmits a signal to
to be used by
Volvo,
according as the new family of engines was
although designed for the
was
introduced
with the new family of engines
function.
the
group.
due to the fact that it depends on a vacuum
engine
load
information,
unit. The
system
also
the throttle
housing.
EZ-118K
ti
on
functions may be used on
while
the control
unit operates a solenoid valve
Most
of
the
differences are
carburettors)
and on E engines
features
a knock-controlled fuel enrichment
the
temperature sensor signal. the control
system
used only
on
the
760/780.
However,
it
features advanced self-diagnostics which facilitate fault
mon itors the
various sensors
mounted in
the
740
GlT.
with an
inductive speedJposition
The system is used
pped with the
same
Rex-I was
introduced
w ith
additional
sensors
event
of engine knock (the phenomenon whereby
plug), the
knock sensor (FI
ignition.
Complete closure of
unit regulates
the t
iming
under
engine
to the
control unit
by the temperature sensorhhermostat
engine
Group
Design
and
function
the
823 FT engine and lH 2.1
excessive.
commanding it
EZ-102K remained in production only for a
8230 F
and
8230
predecessor, EZ-102K,
protect the
rather
than
on a
employs
an idling switch mounted on
was introduced in 1985 on
EZ-1
18K
attributable
to
the
with the
CI
two knock
sensors (one
function
cold to
achieve
faster
appeared
in
1987
with
EZ-1
15K
is used in combination
and
functions,
the engine
compartment.
Unl ike other EZ-K systems used on
pick-up mounted close to
in combination
with the
type of diagnostic system as
in 1989 on
8230
F engines sold in
sensors which
enable the con trol
(F-H
)
may
be
regarded
mounted on
the
the
throttle
the
timing
braking
condi tions
temperature is unusually high or
28
Ignition
systems
-
Overview
to advance
the
introduced.
FT engines
with the
in
1985.
The
the turbo engine
engine from over-
connection be-
load
signal supplied
the
the
B
200
E.
varian ts.
The
8230
K
which
inte
rrupts
fact
t hat
the system is
system
(K-Jetronicl.
for
each
bank
and an
inductive
unit
can
heating of the
coolant.
the
introduction
of the
w ith
LH-
and any faults
EZ-116K was
in-
4-cyl
inder
the
fly-
very
latest fuel
in-
EZ-116K.
Used in
th
e
USA
.
unit
to
ad-
as providing the
th
e
fuel/air
engine wi ll transmit a
is
indicated
by a
throt-
in accordance wi th
an
is controlled to mini-
enables
the
low.
7
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