2000 Saab 9-3 Owner's Manual - Page 170

170 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 identified on a label affixed to the left front inner fender. These engine families meet applicable EPA Federal Standards, California State Standards 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 The Saab Trionic engine management system is a unique Saab development that combines sequential multiport fuel injection, electronic distributorless ignition and turbocharger boost pressure control into one system. 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 feedback function in the ignition discharge unit. By processing all of this information, the Trionic system can control fuel injector opening duration, ignition timing and turbocharger boost pressure to provide excellent engine performance while maintaining low emissions and fuel consumption.