Rotax 912 i series Operator's Manual

Effectivity: 912 i Series BRP-Powertrain page 7-10
OM Edition 1/Rev. 0 January 01/2012
d05871.fm
- The start-up button activates the starter motor
- The switches for the two fuel pumps are used for activation of
the two fuel pumps.
NOTE: Choose “AUTO“ for in-flight position of the
LANE selector switch.
Ignition system 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.
Fuel injection 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.

WARNUNG
NOTICE
If only one LANE is turned “ON“, the engine is
powered by one ignition circuit, depending on
which ignition circuit was choosen.

Rotax 912 i series Specifications

General

Number of Cylinders	4
Max Power	100 hp (73.5 kW)
Max Power Output RPM	5800 rpm
Ignition System	Dual electronic ignition
Oil System	Dry sump, forced lubrication with separate oil tank
Reduction Gear Ratio	2.43:1
TBO	2000 hours
Engine Type	4-stroke, horizontally opposed
Displacement	1352 cm³
Bore x Stroke	84 mm x 61 mm
Max Torque	128 Nm
Fuel Type	Avgas 100LL or unleaded automotive gasoline
Fuel System	Electronic fuel injection
Cooling System	Liquid/air-cooled