Crankcase
Ventilation
Emission Control
System
Through crankcase
ventilation
harmtul emissions
from
the
Y
engine crankcase
are
not
permitted
to reach the outside
Mf
-
__.
r——__
atmosphere.
These emissions
are
recirculated
to
the
air
(KB
OS
cleaner.
From
here the emissions mix
with the
air/fuel
mixture
|
|
al
<i]
7
in the intake
system
and
are
later
burned
in
the
engine
(see
[
The
i
illustration),
ay
iy
|
5B
|
Pp
fo
I
|
cen
eee
|
Exhaust
Gas Recirculation (EGR)
NN
an
4
4,
|
Some of the
exhaust gas
from the
engine
is diverted before it
12
|
|
VT
f
[13]
!
an
eniers
the muffler. This
gas
is routed back into the intake
i
[
|
bi)
—tL_p—
po
|
manifold.
An
exhaust gas recirculation valve controls
the
flow
!
—S
Po
y
i
7
to the
intake
manifold.
The
exhaust
gas recirculated into the
I
7
|
4
sid
!
|
)
combustion chambers
of
the engine
helps lower the
formation
;
[ok
Os
a
7s
of oxides
of
nitrogen (NOx)
during
the
combustion
process
|
a
—
(see illustration).
|
_______
[22-502
|
Catalytic Converter (California
models)
ve
ie
Ce
data
beg
1—Air
cleaner
10-EGR-valve
The
catalytic
converter
is
an
efficient
clean
up
device
built
2
_
Air
sensor
11
—
Auxiliary
air
regulator
into
the exhaust
system
of
your
car
to
further help
reduce
4_
Throttle
valve
(2
Decel. control
ul
Ive
engine
pollutants.
Harmful
carbon monoxide
and
hydro-
‘
sip
dieteiks
12
ece!. Control
Nae
we
ame
im
4
Tg
enn
mem
nina
erimalh,
mbannad
tte
We,
4—
Intake
air
distributor
13
-
Ignition distributor
carbons
in
the
exhaust
gas
are
chemically
changed
inte
harm-
5
—
Exhaust manifold
44
Fuel
injector
less
carbon
dioxide
and
water
vapors
before
iney
pass to
the
6
-
Heat
exchanger
15
—
Crankease ventilation
outside through
the
muffler
(see illustration).
7
— Catalytic
converter
16
—
Indicator
light
for
EGR
The
use
of
unleaded
fuel,
however,
is critically important
for
(California
models)
(not connected
in
the
life of the converter.
Deposits
from
leaded gasolines and
8
-
Muffler
Canada
models)
fuel additives
containing sulfur, zinc, nickel
or
barium will ruin
9
—EGR-filter*
the catalyst
and
make
it ineffective
as an
emission
clean-up
device. Therefore,
only
unleaded
gasoline
without
harmful
“where
applicable
___sCOEXhaust
and
air
lines
additives
must
be
used.
—-
_.
Control lines
(vacuum)
73
