Trionic T7 - Saab 9-5

[SaabWorld]

4-cyl engine - Trionic T7

Control module (589)
Crankshaft position sensor (345)
Mass air flow sensor (205)
Manifold absolute pressure sensor (431)
Charge air absolute pressure sensor (603)
Intake air temperature sensor (407)
Engine coolant temperature sensor (202)
Throttle body (604)
Limp-home solenoid (607)
Charge air control valve (179a)
Bypass control valve (605)
Oxygen sensor 1 (592Fa)
Oxygen sensor 2 (592Ra)
EVAP canister purge valve (321)
EVAP shut-off valve (588)
Tank differential pressure sensor (585)
Injectors (206)
Ignition discharge module (346)
Switch, cruise control (141)
Clutch pedal switch (133)
Brake pedal switch (134)
Brake light switch (29)
Main relay (229)
Fuel pump relay (102)
Relay, limp-home solenoid (640)
A/C relay (156)
ESP control module (671)
TCM control module (502)
Main instrument unit (540B)
TWICE control module (632)
DICE control module (628)

[SaabWorld]

V6 engine - Trionic T7

Control module (608)
Crankshaft position sensor (345)
Mass air flow sensor (205)
Manifold absolute pressure sensor (431)
Charge air absolute pressure sensor (603)
Intake air temperature sensor (407)
Engine coolant temperature sensor (202)
Throttle body (604)
Limp-home solenoid (607)
Oxygen sensor 1 (592Fa)
Oxygen sensor 2 (592Ra)
EVAP canister purge valve (321)
EVAP shut-off control valve (588)
EVAP pressure sensor (585)
Injectors (206)
Ignition discharge modules (346 F/R)
Switch, cruise control (141)
Clutch pedal switch (133)
Brake pedal switch (134)
Brake light switch (29)
Main relay (229)
Fuel pump relay (102)
Relay, limp-home solenoid (640)
SAI relay (324)
A/C relay (156)
ABS control module (547)
TC/ABS control module (382)
ESP control module (671)
TCM control module (502)
Main instrument unit (540B)
TWICE control module (632)
DICE control module (628)
Secondary air injection pump, SAI (326)

[SaabWorld]

Saab Trionic T7 is an engine management system (control module) that governs air mass, fuel and ignition.

As the driver depresses the accelerator pedal, the accelerator cable turns the pedal position sensor located in the throttle body. The system requests a torque and the throttle motor turns the throttle until the throttle position sensor value corresponds with the requested value. The charge air volume is also increased if necessary. The system has the following advantages:

• Turbo lag can be compensated.
• Emissions can be reduced in connection with load changes.
• Integrated idle speed control.
• Load compensation possible throughout the whole load and speed range.
• Efficient torque limitation as necessary.
• Cruise control easy to integrate.

Fuel injection is sequential and is controlled by the air mass flow.

Ignition is performed by an ignition discharge module. The spark plugs are used as sensors to detect combustion and knocking. This means that neither a camshaft position sensor nor a knock sensor is required.

Saab Trionic T7 has been developed by Saab and has great development potential. Compared with earlier systems, the Trionic T5 has the following additional features:

Throttle body (604)
• Contains the pedal position sensor (turned by the accelerator cable), the throttle motor and the throttle position sensor.
• Informs the control module of the driver's torque request.
• Turns the throttle to the position determined by the control module.

Limp-home solenoid (607)
• Fed by a relay, the limp-home solenoid (640) is governed by the control module.
• Mechanically connects the accelerator cable to the throttle spindle of a fault arises in the throttle body or any of its leads. The mechanism must be reset manually.

Charge air absolute pressure sensor (603)
• Informs the control module of the pressure level in front of the throttle.
• Used for determining density of air in front of the throttle. Dense air requires a smaller throttle angle.

Intake air temperature sensor (407)
• Informs the control module of the temperature in front of the throttle.
• Used for determining density of air in front of the throttle. Dense air requires a smaller throttle angle.

Manifold absolute pressure sensor (431)
• Informs the control module of the pressure in front of the throttle. • Used to correct the value from the mass air flow sensor during rapid load changes.

Turbo bypass control valve (605)
• Connects the bypass valve control in front of the throttle.
• When the accelerator pedal is released, the bypass valve control line is connected after the throttle.
Prevents noise and varying charge pressure.

Mass air flow sensor (205)
• Sends frequency modulated information on the air mass flow to the control module. • Acts as the main sensor for fuel injection.