2007 Saab 9-3 Owner's Manual - Page 203

Car 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. 203 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 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. 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 in the engine bay. 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. 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 addition, 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. 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.