Lambda sensors
EMISSION REDUCING DEVICES
(diesel engines)
WARNING
The lambda sensors detect the oxygen
content in the exhaust gas.
Due to the high temper-
ature reached while the
catalysts are working, it is advis-
able not to park the car over in-
flammable material (paper, fuel
oils, grass, dry leaves, etc.).
Oxidising catalytic converter
The signals transmitted by the Lambda
sensors are used by the electronic control
unit of the injection-ignition system to ad-
just the air-fuel mixture.
Converts the polluting substance in the
exhaust gases (carbon monoxide, un-
burnt hydrocarbons and particulate), thus
reducing the fumes and smell that are
typical of diesel engines.
Anti-evaporation system
(only petrol versions)
The catalytic converter consists of a
stainless steel case that houses a ceramic
honeycomb coated with noble metal used
as a catalyst.
As it is impossible, even when the en-
gine is switched off, to prevent the forma-
tion of fuel vapours, a system has been
devised which traps them in a special car-
bon container.
Exhaust gas recirculation system
(E.G.R.)
During operation of the engine these
vapours are withdrawn and sent to com-
bustion.
This system recycles, i.e. re-uses, a
varying percentage of the exhaust gases
depending on engine operating condi-
tions.
It is used, when necessary, to control ni-
tric oxides.
131
| Categories | Alfa Romeo 166 Manuals, Alfa Romeo Manuals |
|---|---|
| Tags | Alfa Romeo 166 2.0 T.SPARK, Alfa Romeo 166 2.5 V6 24V, Alfa Romeo 166 3.0 V6 24V, Alfa Romeo 166 3.2 V6 24V, Alfa Romeo 166 JTD |
| Model Year | 2003, 2004, 2005 |
| Download File |
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| Document File Type | |
| Copyright | Attribution Non-commercial |
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