Manual Saab 9-3 - 2007 (page 203 of 304) (English)

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203Car care

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.

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.

Emission control

systems

The systems for controlling emissions to the

atmosphere require regular checking and

adjustment at the intervals specified in the

service program.

In addition to meeting the exhaust emission

regulations and thereby helping to keep the

environment clean, a correctly tuned engine

will also give maximum fuel economy.

Saab Trionic engine

management system, 4-cyl

engine

The Saab Trionic engine management

system is a unique Saab development that

combines sequential multiport fuel injection,

electronic distributorless ignition and turbo-

charger boost pressure control into one sys-

tem.

The Trionic engine control module (ECM)

monitors many different engine parameters

such as:

• Intake manifold pressure.

• Intake air temperature.

• Crankshaft position.

• Engine coolant temperature.

• Throttle position.

• The oxygen content of the exhaust gases.

The ECM receives information regarding

engine knocking from a sophisticated feed-

back function in the ignition discharge unit.

By processing all of this information, the Tri-

onic system can control fuel injector open-

ing duration, ignition timing and turbo-

charger boost pressure to provide excellent

engine performance while maintaining low

emissions and fuel consumption.

WARNING

Engine exhaust, some of its constituents,

and certain vehicle components contain

or emit chemicals known to the State of

California to cause cancer and birth

defects and reproductive harm. In addi-

tion, certain fluids contained in vehicles

and certain products of component wear

contain or emit chemicals known to the

State of California to cause cancer and

birth defects or other reproductive harm.

93_U S_M 07.book Page 203 W ednesday, April 12, 2006 9:30 AM

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Saab 9-3 - 2007 Manual

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