Rotax 914 F - 9.4 Electric system (Ignition, generators)

Reference
Modification no.
- 0 -
Page
48
Date
1997 02 01
Main
914 F
01476
1T
2T
4T
3T
3B
4B
2B
1B
E
E
E
T
E
W
W
R
R
R
R
B1/2
A3/4
B3/4
A1/2
Q
9.4) Electric system (Ignition, generators)
See Pic. 21.
The ROTAX 914 F is equipped with a breakerless Dual Capacitor Discharge Ignition
(DCDI).
The ignition unit is completely free of maintenance and needs no external power
supply.
Two independent charging coils Q located on the generator stator supply one ignition
circuit each. The energy is stored in capacitors of the electronic modules W. At the
moment of ignition 2 each of the 4 external trigger coils E actuate the discharge of the
capacitors via the primary circuit of the dual ignition coils R.
◆ NOTE: The 5
th
trigger coil T is provided for the rev-counter signals.
Ignition circuit A (top spark plug)
Ignition circuit B (bottom spark plug)
Pic. 21
The standard equipment includes also an internal generator with external rectifier-
regulator (12V 20A DC).
For more power demand installation of an external alternator (12V 40A DC) is feasible.
◆ NOTE: A rectifier-regulator is already integrated in the alternator.
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