Catalytic converter
Catalytic converter
This is a supplementary device in the exhaust
system, designed to clean exhaust gases. It
consists mainly of a container with a ceramic
material insert, designed to let the exhaust
gases pass through channels in the insert. The
channel walls are covered by a thin layer of
platinum-rhodium. These metals act as cata-
lysts - taking part in and accelerating a che-
mical reaction without being consumed by it.
CAUTION!
Vehicles equipped with catalytic converters
must always be run on unleaded petrol.
Otherwise, the catalytic converter will be-
come ineffective. See "Fuel requirements".
Lambda-Sond (oxygen sensor)
system
This is an emission control system designed to
reduce emissions and improve fuel economy.
An oxygen sensor monitors the composition of
the exhaust gases leaving the engine. The value
provided by this analysis of the exhaust gases is
fed into an electronic system which constantly
regulates the injectors. The unit adjusts the air-
fuel ratio to provide optimum conditions for
combustion and efficient reduction of the three
major pollutants (hydrocarbons, carbon monoxide
and nitrous gases) by means of a 3-way
catalytic converter.
