Wiktionary
trionic
a. (context physics English) Of, pertaining to, or composed of trions
Wikipedia
Trionic
Trionic is an engine management system developed by Saab Automobile, consisting of an engine control unit (ECU) that controls 3 engine aspects:
- Ignition timing,
- Fuel injection
- Acts as a boost controller.
Hence the numerical prefix ' Tri' in Trionic. 'Ion' comes from the fact that it uses ion current as a sensor for knock, misfire and synchronization detection
Since Trionic 7, the throttle and thereby the air charge is electronically controlled, but the name "Trionic" was not changed accordingly.