DYNATEK ARC-2 Handmatig - Pagina 2

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Introduction

Thank you for purchasing the Dynatek ARC-2 Ignition. Please take a few moments and read through all of the installation

information before attempting to install this. If this is being installed on a vehicle which we make a plug in harness for, we highly

suggest you use that harness. Consult the Installation Guide included with that harness for vehicle specific installations. If you

have any more questions, please consult your Dynatek dealer before installation.

The ARC-2 ignition was designed with several key technologies that enable it to optimize your vehicles ignition system, and

realizing the performance potential of your vehicles engine. The design features that help to do this were how the ARC-2 was

named – Asynchronously Restriking CDI – 2 channel.

The Asynchronous firing allows you to run the 2 channels independently. Each channel has its own storage capacitor. This

allows the ARC to fire the 2 channels simultaneously, or nearly simultaneously. This is necessary in applications where there

are leading and trailing spark plugs firing close together.

The Restriking fires off lean mixtures at idle and low RPMs. Restriking will fire the spark plug multiple times at low RPMS,

so that if the mixture did not light the first time, it will be ignited the second time, ensuring that the combustion occurs. The

ARC uses ISP (Intelligent Spark Profiling) to speed up the second and later sparks. This ensures that the second spark on

the ARC occurs sooner than would otherwise be possible.

The Capacitive Discharge Ignition design produces a short duration high intensity spark, with a profile designed to ignite

under the most severe conditions. This high voltage and intensity makes the spark more likely to ignite on high power appli-

cations like high compression, turbocharged, and/or nitrous equipped vehicles.

It is also ideally suited for high RPM use, where the zero dwell time means it will have full power to much higher RPM than

possible with most coils.

Pre Installation

Basics of CDI vs. Inductive ignition

There are two commonly used types of ignition on the market today: Capacitive Discharge, and Inductive. They have funda-

mental differences not only in how they work, but also in how they are wired.

Inductive Ignitions are very common in factory applications.

They require fewer parts, and are cheaper to build. They work by

storing energy in the ignition coil. It draws 12V from the battery,

through the ignition coil on the primary side, and then to the ECU

(or to a power transistor) as shown in Figure 1(a). This current

builds up a magnetic field within the coil. To create the spark, the

current is stopped. This causes the magnetic field to collapse,

and creates the voltage spike on the secondary that starts the

spark. See Figure 1(b).

The coil resistance and inductance are very important on

Inductive Ignitions. The amount of time the coil is being charged

with current by the ECU is often referred to as the dwell time.

How much current is needed, and how quickly the current flow

rises is directly related to the coil resistance and inductance. In

an Inductive Ignition system, mismatching your coils to the dwell

time the ECU gives could result in either too weak of a signal to

create a spark, or too much current that could damage the ECU,

coils, or both. Also, the total amount of energy that can be

produced from the ignition is going to be a function of the dwell

time, and inductance of the coil. With a large inductance, the

dwell time will have to be very long, but you can store more total

energy. A small inductance allows the current and energy storage

to build very quickly, but it has much less total energy storage

capacity.

ARC-2

Asynchronous Restriking CDI

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