Trionic is an engine management system developed by

Saab Automobile Saab Automobile AB () was a automotive industry, car manufacturer that was founded in Sweden in 1945 when its parent company, Saab AB, began a project to design a small automobile. The first production model, the Saab 92, was launched in 1949. ...

. It consists of an

engine control unit An engine control unit (ECU), also called an engine control module (ECM), is a device that controls various subsystems of an internal combustion engine. Systems commonly controlled by an ECU include the fuel injection and ignition systems. The ...

(ECU) that controls 3 engine aspects: #

Ignition timing In a spark ignition internal combustion engine, ignition timing is the timing, relative to the current piston position and crankshaft angle, of the release of a spark in the combustion chamber near the end of the compression stroke. The need ...

Fuel injection Fuel injection is the introduction of fuel in an internal combustion engine, most commonly automotive engines, by the means of a fuel injector. This article focuses on fuel injection in reciprocating piston and Wankel rotary engines. All c ...

# Acts as a

boost controller In turbocharged internal combustion engines, a boost controller is a device sometimes used to increase the boost pressure produced by the turbocharger. It achieves this by reducing the boost pressure seen by the wastegate. Operation The purpo ...

. The numerical prefix '

tri- Numeral or number prefixes are prefixes derived from numerals or occasionally other numbers. In English and many other languages, they are used to coin numerous series of words. For example: *triangle, quadrilateral, pentagon, hexagon, octagon ...

' yes (Tri being three) in Trionic. 'Ion' comes from the fact that it uses ion current, measured by the spark plugs between combustion events which acts as a sensor for knock, misfire and synchronization detection. The ion current stream which was developed within the ion sensing system due to combustion can be deduced by monitoring the secondary current of the ignition coil. Using the value and wave shape of the current, after the actual spark event, the quality of the actual combustion process is determined, thus allowing the engine control unit to optimize the timing of the spark for the best engine performance while keeping emissions low on a much wider range of rpms. Since Trionic 7, the throttle and thereby the air charge has also been electronically controlled, but the name "Trionic" was not changed accordingly as it was determined that the name had value.

History

The SAAB Trionic engine management system was developed for the 9000 and 'New Generation'

900 __NOTOC__ Year 900 ( CM) was a leap year starting on Tuesday of the Julian calendar. Events By place Abbasid Caliphate * Spring – Forces under the Transoxianian emir Isma'il ibn Ahmad are victorious at Balkh (Northern Afghan ...

turbocharged engines. The engine management system was first utilized on the Saab B204 and B234 "H" engines to monitor and control the fuel injection system and turbocharging pressure control. The Trionic 5.2 and 5.5 systems utilized the manifold absolute pressure (MAP)

sensor A sensor is often defined as a device that receives and responds to a signal or stimulus. The stimulus is the quantity, property, or condition that is sensed and converted into electrical signal. In the broadest definition, a sensor is a devi ...

and the intake air charge temperature sensor to calculate the fuel injection curves, while the Trionic 7 and 8 systems are mass air flow type. Both systems have substantial differences that prevent utilization of components between the two. Generally speaking, engine tuners prefer the easier to work with Trionic 5 systems over the Trionic 7 and 8 which are more restrictive in what can be manipulated within the software. The intellectual rights to the Trionic 5 and 7 systems were sold in 2009 to

BAIC Beijing Automotive Group Co., Ltd. (BAIC, formerly as Beijing Automotive Industry Corporation) is a Chinese State-owned enterprises of China, state-owned automobile manufacturer headquartered in Shunyi District, Shunyi, Beijing. Founded in 1958 ...

, along with the Saab H Engine that it was designed for, as part of Saab's restructuring and transfer of ownership of

General Motors General Motors Company (GM) is an American Multinational corporation, multinational Automotive industry, automotive manufacturing company headquartered in Detroit, Michigan, United States. The company is most known for owning and manufacturing f ...

Spyker Spyker or Spijker was a Dutch carriage, automobile and aircraft manufacturer, started in 1880 by blacksmiths Jacobus and Hendrik-Jan Spijker. Originally located in Hilversum, the company relocated to Trompenburg, Amsterdam in 1898. Notable produ ...

Models and ECU information

Trionic systems are shortened to indicate their version; for e.g. T5, T7, T8, etc. The engines with T5 had red direct ignition modules which differentiated them visually from the T7 models which had a black ignition module. The ignition module on both T5 and T7 are an integral ignition coil and electronics that plug directly onto the spark plugs without the use of spark plug wires that were typically used in most engines at the time. SAAB Models Utilizing Trionic Engine Management System: *2nd Generation

("NG900") 1994-1998 T5 * 9000 1994-1998 T5 *1st Generation 9-3 1998-2000 T5 (Except Viggen, which is T7) *1st Generation 9-3 2000 to 2002 T7 *1st Generation 9-5 1998-2010 4Cyl T7 *2nd Generation 9-3 2003 to 2011 4cyl T8

Glossary

Sources include: Engine management system SAAB Trionic T5.5Engine management system SAAB TRIONIC T5.5
/ref> * APC,

Automatic Performance Control Automatic Performance Control (APC) was the first engine knock and boost control system. The APC was invented by Per Gillbrand at the Swedish car maker SAAB. SAAB introduced it on the turbo charged Saab H engines in 1982, and the APC was fitt ...

* CDM, Combustion Detection Module * ECU,

Engine control unit An engine control unit (ECU), also called an engine control module (ECM), is a device that controls various subsystems of an internal combustion engine. Systems commonly controlled by an ECU include the fuel injection and ignition systems. The ...

* EGT, Exhaust gas temperature * ETC,

Electronic throttle control Electronic throttle control (ETC) is an Automotive engineering, automotive technology that uses electronics to replace the traditional mechanical linkages between the driver's input such as a Car controls#Throttle control, foot pedal to the vehi ...

* MAP, Manifold Absolute Pressure * MIU, Main Instrument Unit * ORVR, On board Refueling Vapor Recovery system * PWM,

Pulse-width modulation Pulse-width modulation (PWM), also known as pulse-duration modulation (PDM) or pulse-length modulation (PLM), is any method of representing a signal as a rectangular wave with a varying duty cycle (and for some methods also a varying peri ...

* SID, Saab Information Display * TCS,

Traction control system A traction control system (TCS), is typically (but not necessarily) a secondary function of the electronic stability control (ESC) on production motor vehicles, designed to prevent loss of traction (i.e., wheelspin) of the driven road wheels. TC ...

* TPS, Throttle position sensor * TWICE, Theft Warning Integrated Central Electronics * VSS, Vehicle Speed Sensor * WOT, Wide Open Throttle

References

External links

* {{webarchive , url=https://web.archive.org/web/20190225012841/http://ecuproject.com:80/index.html , date=25 February 2019 , title=ecuproject.com, formerly a Community dedicated to giving Trionic power to the people! This site is no longer online. Founded by Andrew J. Weaver and Steven A. Hayes and supported by the global SAAB community.
trionictuning.com
community-driven exploration and development of new Trionic features, supported by the global SAAB community. * Engine control systems