Volvo S80 Owner's Manual page 166

The purpose of the catalytic converter is to
purify exhaust.
It is located in the exhaust flow near the engine
to quickly reach operating temperature.
The catalytic converter consists of a monolith
(ceramic or metal) with channels. The channel
walls are coated with a thin layer of platinum,
rhodium and palladium. The metals act as
catalysts, i.e. they accelerate the chemical
process without being used up themselves.
Lambda-sond TM Heated oxygen sensor
The lambda sensor is part of a management
system intended to reduce emissions and
improve fuel economy.
An oxygen sensor monitors the oxygen content
of the exhaust gases leaving the engine. These
values are fed into an electronic system that
continuously controls the injectors. The ratio of
air to fuel is continuously adjusted.
These adjustments create optimal conditions for
efficient combustion, and together with the three-
way catalytic converter reduce harmful emis-
sions (hydrocarbons, carbon monoxide and
nitrous oxides).
2501523d
Front end
McPherson type spring strut. Unitary construc-
tion of shock absorbers and spring. Rack and
pinion steering. Safety type steering shaft. The
values apply to an unladen car with full tank,
coolant and spare wheel.
Rear suspension
Independent suspension with individually
sprung wheels with shock absorbers. The
suspension consists of rear-facing trailer arms,
upper and lower control arms, track rods and
anti-roll bar.
165