Lancia THESIS CONNECT Owner's Handbook Manual - page 7

DEVICES FOR REDUCING PETROL ENGINE EMISSIONS

Three-way catalytic converter (catalytic exhaust pipe)

The exhaust system is equipped with a catalyst made up of noble metal alloys; it is housed in a

stainless steel container capable of withstanding the very high operating temperatures.

The catalyst converts the unburnt hydrocarbons, the carbon monoxide and the nitric oxides found

in the exhaust gases (though in small amounts, thanks to the electronic-injection ignition systems)

into non-polluting substances.

When functioning normally, the catalytic converter reaches high temperatures. For this reason do

not park the car over inflammable material (e.g. paper, fuel oil, grass, dead leaves, etc.).

Lambda sensors

The Lambda sensors detect the oxygen content in the exhaust gas. The signal sent by the oxygen

sensor is used by the injection system electronic control unit to constantly mix air and fuel in the cor-

rect proportion.

Fuel evaporation canister

As it is impossible to stop the build up of petrol fumes, also when the engine is not running, the sys-

tem traps them in a special container holding active carbon.

The fumes are sucked in from here and burnt while the engine is running.