Rotax 912 i series Operator's Manual

Effectivity: 912 i Series BRP-Powertrain page 5-5
OM Edition 1/Rev. 2 April 01/2014
d05697.fm
POWER vs. ECO
mode
The 912 iSc/iS engine has two different modes, the POWER and
ECO mode where the fuel consumption changes significantly.
See from Fig. 2 to Fig. 4.
Fig. 5
09857
Performance
graph
Engine 912 iSc/iS
Performance graph for non-standard conditions
The following graph shows the performance drop with increasing
flight altitude. The curves show the performance at 5800, 5500,
5000, 4800 and 4300 rpm, at full throttle.
At deviation of temperature conditions from standard atmosphere
conditions the engine performance to be expected can be calcu-
lated from the performance indicated, multiplied by standard tem-
perature, divided by actual temperature in °K.
Fig. 6
08636
0
20
40
60
80
100
120
140
3000 3300 3800 4000 4300 4500 4800 5000 5300 5500 5800
rpm
engine torque (Nm)
PWR
mode
ECO
Mode
0
20
40
60
80
100
120
140
3000 3500 4000 4500 5000 5500
cruising condition
Propeller Load curve
during flight
Propeller load curve at
zero mph ground speed
Take off phase

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