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B.6 Rotary Engines
The E6S is capable of providing fuel and spark to twin-rotor Wankel engines, both in direct
fire form or with a distributor. The leading and trailing sparks are generated separately, with a
programmable split between them. The split is programmed through the Rotary Trailing Map.
There are two ranges to the Rotary Trailing Map, below 2000 rpm and above 2000 rpm. This
map is a measure of split, or delay, from the leading spark, which is computed from the base
ignition map normally with all corrections. The map indexes split against the engine load.
When displayed on the Engine Data Page, or in datalogs, the trailing spark timing is shown as
an absolute advance in degrees BTDC.
If using a distributor, there are two ignition outputs, one for the leading and one for the
trailing coils. If using direct fire, the two leading sparks are fired together, as in a waste-spark
set-up. Two individual coils must be used for the trailing sparks, as these are fired separately.
Each coil igniter will have its own trigger. If using direct fire, a Home signal is needed for
trailing ignition to be generated.
Distributor Direct Fire
Output Function Function
INJ1/INJ2 Fuel (Primary) Fuel (Primary)
INJ3/INJ4 Fuel (Secondary) Fuel (Secondary
IGN OUT Leading Spark Leading Spark (both)
AUX OUT 1 Trailing Spark Trailing Spark front rotor
AUX OUT 2 Auxiliary Output Trailing Spark rear rotor
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