Engine - Saab 9-3 M2008 Owner's Manual

93_US_M08.book Page 205 Friday, May 11, 2007 11:37 AM

Engine

Turbo 4-cylinder engine
The engine is a transverse four-cylinder
in-line engine with twin overhead camshafts
and 16 valves.
The engine is equipped with two balance-
shafts that reduce engine vibrations to a
minimum.
The balance shafts are chain-driven and
rotate at twice the speed of the crankshaft.
They produce forces and torques that are
opposed to those generated by the pistons
and connecting rods. The effect occurs
twice in each revolution of the engine, coun-
teracting the vibration from its moving parts,
and at the same time reducing unwanted
engine noise.
The gearbox, located on the right (viewed
from the front), is integrated with the engine.
Turbo V6 engine
The V6 engine is a turbocharged V6 engine
produced completely of aluminium with 60°
between the cylinder banks, 4 valves per
cylinder, 2 camshafts per bank.
The camshafts are driven via a chain trans-
mission. The engine is equipped with a
turbo whose turbine collects exhaust pres-
sure from both banks of cylinders.
To obtain optimum performance, fuel con-
sumption and low emission levels the
engine is equipped with CVCP (Continuous
Variable Cam Phasing). This means that
the engine's intake camshafts can be
adjusted to achieve optimum functionality.
The switches are hydraulic.
Car care
Engine families
Saab cars imported into the United States
and Canada meet all applicable emission
control standards. The engine family and
appropriate tune-up specifications are iden-
tified on a label in the engine bay.
These engine families meet applicable EPA
Federal Standards, California State Stan-
dards and Canadian Federal Standards and
are equipped with the following systems:
• sequential multiport fuel injection system
• three way catalytic converter
• crankcase emissions control system
• evaporative emission system.
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