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Saab Trionic systemoverview

Saab Trionic system overview


Saab Trionic is an engine management system which controls ignition, fuel injection and boost pressure from a single electronic control module. Saab Trionic is introduced on Saab 900 cars with the B204 L engine beginning with model year 1994 1/2.

The Saab Trionic ignition system consists of an ignition discharge module with four ignition coils, one for each spark plug. The ignition system is capacitive. The spark plugs are used as sensors to detect combustion and knocking. This means that no camshaft sensors or knock sensors are required.

Fuel injection is sequential and is governed by the pressure in the intake manifold.

Boost pressure is controlled by a solenoid valve which is connected to the turbo unit wastegate.

Trionic has been developed by Saab and has great potential for development.