Rotax 912 i series Operator's Manual page 76

Ignition system
Fuel injection
Effectivity: 912 i Series
OM Edition 1/Rev. 0
NOTICE WARNUNG
The start-up button activates the starter motor
-
The switches for the two fuel pumps are used for activation of
-
the two fuel pumps.
Choose "AUTO" for in-flight position of the
NOTE:
LANE selector switch.
The 912 iSc/iS is equipped with 4 double ignition coils. The igni-
tion system is almost entirely wear-free, as the ECU generates
and processes the ignition signal electronically.
Firing sequence: 1-4-2-3.
The engine is equipped with an electronic fuel injection system.
This system is controlled by the ECU and enables highly accurate
metering of the fuel according to operating and load conditions,
whilst at the same time also taking ambient conditions into ac-
count.
The key input variables are throttle valve position, engine speed
signal, intake air temperature, ambient pressure, boost pressure
and exhaust temperature.
Ultimately, the required fuel quantity or injection period is deter-
mined on the basis of the calculated air density in the airbox. It is
monitored continuously.
BRP-Powertrain
If only one LANE is turned "ON", the engine is
powered by one ignition circuit, depending on
which ignition circuit was choosen.
page 7-10
January 01/2012