Rosenbauer FOX 4 - 12.4 Propulsion Engine

Technical data
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Propulsion engine
12.4 Propulsion engine
Propulsion engine
Manufacturer BRP Rotax
Type 903 ACE
Operation type Four-stroke petrol engine with elec-
tronic injection
Cylinder 3
Valves per cylinder 4
Bore / stroke 74 / 69.7 mm
Cubic capacity 899.3 cc
Output 45 kW at 5200 min
-1
(± 200 min
-1
)
48 kW at 5500 min
-1
(± 200 min
-1
)
Idling speed 1700 min
-1
Torque 85 NM at 5200 min
-1
(± 200 min
-1
)
Engine control BOSCH ME17
Generator output 420 W
Starter system 12 V 0.8 kW electronic starter with
restart lock
Battery 12V / 18 Ah / cold check current 250
A (VARTA Powersports AGM
518902026A514)
Fuel injection Electronic multiple point petrol injec-
tion
46 mm heated single throttle body
Ignition system
Ignition system Electronic ignition system, ignition
programme
Spark plug
Type NGK MR7BI-8
Number 3
Electrode gap 0.7 – 0.8 mm (non-adjustable!)
Fuel
Fuel ROZ 95 Petrol
E10 fuel (<= 10% ethanol)
Aspen four-stroke