DYNATEK ARC-2 Manual - Página 3

Procurar online ou descarregar pdf Manual para Acessórios para motociclos DYNATEK ARC-2. DYNATEK ARC-2 10 páginas.

DYNATEK ARC-2 Manual
In a Capacitive Discharge Ignition System, the coil does not
store the energy prior to firing. The capacitor stores the
energy, as shown in Figure 2(a). Then when the ECU wants
to create a spark, it triggers the capacitor to fire, and all of the
energy stored in the capacitor is delivered to the coil in a very
short, high power pulse as shown in Figure 2(b). This pulse
will be several hundreds of volts. The coil then acts as a trans-
former, and changes that pulse into several thousand volts,
enough to create the spark.
The Capacitive Discharge Ignition requires zero dwell time
for the coils, the maximum RPM is limited by how quickly the
capacitor can be recharged. This allows CD Ignitions to hold
consistent spark energy at much higher RPM than factory
inductive ignitions. It also means that CD Ignitions can work
with a much broader range of coils than stock inductive igni-
tions, since dwell time no longer is a critical parameter.
Spark Restrike
CD Ignitions provide a more powerful, but very short spark.
Inductive ignitions create a spark that lasts significantly
longer. Because of how the energy is stored in a magnetic
field within the ignition coil, any time an inductive spark is
blown out, it will try to restart the spark automatically. CD Igni-
tions deliver most of their energy so quickly that if a spark is
blown out, it will almost never have time or energy to restart
the spark.
Tech Support: 1800-928-3962
This matters most under light load and lean air fuel
mixtures, when it may be possible for a spark to fire, but not
have any fuel in the spark gap. The ability to restrike the spark
at that point will ensure a complete combustion, and smoother
running.
This statement needs to be repeated:Multiple sparks on a
CDI are NOT for power gains, but rather for cleaning up emis-
sions.
Most typical CD Ignitions fire the multisparks around 1
spark per millisecond. This rate is tied to the amount of time
it takes them to recharge the capacitor. While this may seem
quick at first glance, 1 millisecond is 18 degrees later at just
3000 RPM. And many CD Ignitions stop multiple sparks in the
3000-4000 RPM range, because it just takes too long to get
that second spark. With that much timing delay, multiple
sparks are clearly not for power.
The ARC-2 improves upon this by lowering the time it takes
to get that second spark, using a proprietary technique called
Intelligent Spark Profiling, or ISP.

Ignition Coils

On vehicles equipped with inductive ignitions, there are a
wide variety of coils. Some coils have 4 outputs, some have
2, and some have 1. The 4 output coils are usually dual 2
output coils molded into 1 package. The 2 output coils are
designed to fire both spark plugs at the same time. The ARC-
2 can handle all of these configurations.
2801211
Installation Guide- 3