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26
EXHAUST SYSTEM
Exhaust Gas Recirculation (EGR)
Exhaust gas rec
ircul at
nitri
c oxide
emission
range
of the engine.
Construct
ion:
The
dev ice co
nsists
of
exhaust gas
(8) with
contro
l
(D)
Operation
In
th
e
part-load
ran
ge
T
he
va
lve opens
and fresh
Th
is contro
ll
ed
"pollution"
The funct
ion of
t he
behind the speedo meter
been reached.
io
n
is
designed
to
red uce
(NO
in
a
particul ar
x )
a
diaphragm contro
filte
r
(C) and
a vac
the
cont
rol
va
lve
diaphragm
air is mixed wi
reduces
the
nitric-oxide
EGR
system
must
be
which
ligh
ts
a
warning
the
load
l
va lve
(A),
uum
is
lifted by
t
h
a
fraction
of the
ex
concentration
t
ested
every 30,000
lamp
mark
ed
17
the vacuum
in
the control line.
haust
gas.
(NO
in the exhaust
)
x
miles.
A
cou
nting
mechanism is
wh en
the
30,000 mile limit has
gas.
fitted
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