Emission Control System
In
the Interest of Clean
Afr
Pollution of our environment is of increasing concern to all ol
us.
We urge you to join us in our efforts for cleaner air in
controlling the pollutants emitted from the automobile.
Volkswagen has long recognized
its
responsibilities not only
toward its customers but also toward the public in general,
We have developed an emission control system that controls
or reduces those parts of the emission that can be harmful
to our environment. Your Volkswagen is equipped with such
a system.
Volkswagen warrants the emission control system In your
vehicle under the terms and conditions set forth in the
Warranty and Maintenance booklet. You, as the owner of the
vehicle, have the responsibility to provide regular mainte-
nance service for the vehicle, as specified
In
the maintenance
schedule, and to keep a record of all maintenance work
performed
Authorized Volkswagen dealers have VW trained
mechanics and special tools to offer
fast,
efficient service.
How Emission Control Works
When an automobile engine Is running, It uses energy
generated through the combustion of a mixture of air and
fuel.
Depending on whether a car is driven fast or slow or
whether the engine
Is
cold or
hot.
some of the fuel (hydro-
carbons) may not be burned completely but be discharged
into the engine crankcase or exhaust system. Additional
hydrocarbons may enter the atmosphere through evapora-
tion of fuel from the fuel tank. These hydrocarbons released
Into the air contribute to undesirable
pollution
In addition, carbon monoxide (CO) and oxides of nitrogen
(NOx) contribute to harmful engine emissions, They, too,
are formed during combustion and discharged into
the exhaust system.
To reduce these pollutants all Volkswagens are equipped
with a special emission control system.
Your Volkswagen may have all or
pari
of the following major
components:
High/low altitude operation
Cars sold in high or low altitude areas are adjusted for
proper operation at the respective altitude.
If you should move for an extended period ot time from a low
to a
high
altitude area (4000 feet/1220 meters above sea
level),
or vice versa, the vehicle engine must be readjusted
for operation at the respective altitude by your authorized
dealer.
62
Controlled Combustion System
The amount of pollutants emitted from an engine greatly
depends on the combustion of the air/fuel mixture. Com-
plete burning of the air/fuel mixture is,
therefore,
very impor-
tant. An improved combustion process in your Volkswagen
makes it possible to keep harmful emissions from the engine
at the required low level.
Your Volkswagen is equipped with a precisely calibrated
fuel injection system to assure a finely balanced air/fuel
mixture under all operating conditions
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