..
II
The
Crankcase Emission Control
Sys-
tem
III
The
Evaporative Emission Control
Sys-
tem
Engine
Families
1987 Saabs
imported
to the United States
are
divided into various engine families
(naturally
aspirated
and
turbocharged).
The
emission
control
standards
they
meet
are
indicat
ed
below.
The
eng
ine family
and
appropriate
tune
-u
p specifications
are
identified
on
a
label
affIxed to
the
left front
inner
fender.
HSA2.0V6FNT8
(Naturally-aspirated
8 valve)
HSA2.0V5FNB3
(Naturally-aspirated
16 valve)
HSA2.0V5FTBX (Turbo, 16 valve)
These engine families
meet
both
EPA Fede-
ral
Stand
ards
and
California State Stan-
dards
and
are
equipped
with
the
following
. systems
to
ens
ure
compliance
with
th
e
app
-
licable
standards:
A.
Mechanical injection system (CIS) (8
valve)
B.
Electronic injection system (LH) (16 val-
ve)
C.
Decel
dashpot
(autom
atic
transmission,
8 valve,
and
all 16 valve
D.
Decel fuel
shut
off
(manual
transmis
-
sion, 8 valve).
E.
Lambda
control system
(8
valve)
F.
Catalytic converter
I Exhaust
emission
control systems
The
fuel injection system allows precise fuel
met
ering
which
results
in
low
baseline
emissions
while
r
etaining
good drivebility,
Technical
description
43
performance
and
economy.
The
intake
air
flow
determin
es
the
correct
momentary
quantity
of
fuel
metered
to
the
four
int
ake
port
injectors for
most
effIcient
combus
-
tion.
The
engine
draws
in
more
or
less
air
depending
on
its speed
and
the
load
app
-
lied.
A
Mechanical
injection
system
(CIS), 8
valve
engines
SG206
1.
Fuel
tank
9. Injection valves (4)
2. Fuel
pumps
10.
Thermo-time
switch
3. Fuel
acc
umulator
11.
Auxiliary
air
valve
4.
Fuel filter
12.
Line
pressure
reg
ulator
5.
Fuel
distributor
13.
Air
cleaner
6. Control
pressure
regu
lator
14 .
Modulating
valve*
7.
Air flow sensor pIa te
15.
Electronic
control
unit*
8.
Cold
start
valve
16.
Oxygen
sensor
*
*)
Lambda
system
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