Reduced emissionsThis ignition coil is a
pulse-type transformer. Like other transformers, it consists, in part, of two
coils of wire, as shown in the diagram at right. These are both wrapped around
the same iron core. Because this is a step-up transformer, the secondary coil
has far more turns of wire than the primary coil, which is wrapped around the
secondary. In fact, the secondary coil has several thousand turns of thin wire,
whereas the primary coil has just a few hundred. In your car, this allows some
40,000 volts of current to be generated by a modest battery.
In a car ignition
system, direct current (DC) is used (provided by the battery), because the idea
is not to create steady, continuous induction, but one single, dramatic
induction from a sudden collapse of a magnetic field. As current flows to the
primary coil, an increasingly large magnetic field builds up around it as well
as around the secondary coil housed inside. When this current is stopped, the
field suddenly collapses, and this rapid change induces a surge of current in
the secondary coil, which streams out the high voltage Output Terminal and is
enough to jump the Spark Gap in the circuit. This spark then ignites the fuel
mixture and gets the motor running.
There is just one problem
with this scenario. The collapsing field also induces a lesser surge (back EMF)
in the primary coil, creating a second, unwanted surge of electricity traveling
back through one of the primary terminals toward the switch. To keep that surge
from reaching the switch (and creating a damaging spark across those points), a
Capacitor is inserted in the circuit. This capacitor is called a condenser in
auto ignition systems safely absorbs the back emf.
Hyper Force System
(a.k.a. HFS or X-Power in Japan)
is Sun Automobile's new high-efficiency ignition tuning and strengthening
system for the Prius. It focuses on direct ignition engines and is available in 4 and is made specifically for the Toyota Prius.
Description :
Benefits: Increased Engine Response Improved Fuel Efficiency Increased Horse Power and
Torque Reliable ignition spark
throughout the entire rev range Reduced emissions /
stabilized idling Problems associated with ignition coils and the
capability of the Hyper Force System: A normal ignition coil
inherently generates back electromotive force (*back EMF) during
operation. This back EMF negatively affects the ignition device inside
the coil, decreases plug voltage, and negatively affects plug efficiency.
With this problem, voltage not only becomes unstable but also produces ignition
time lag in the next ignition cycle. HYPER FORCE SYSTEM works by
absorbing all back EMF, which aids to improve plug voltage and promote
complete combustion by producing 100% coil efficiency. Furthermore, HYPER
FORCE SYSTEM eliminates any ignition performance loss due to decreased
electrical current under heavy throttle. Since ignition efficiency
over the entire rev range improves, available torque and acceleration
response improves; this efficiency enhancement also contributes to better
fuel efficiency and a reduction of harmful emissions. Included Components: Main
Unit(1), Mounting Bracket(Set), Zip Ties(3), Double-sided Tape(1)
Specifications: Simple connection between
ignition coil and stock harness with a vehicle-specific harness adapter
(sold separately). Mounting brackets, double
sided tape, and all other necessary hardware included for a direct fit to
your vehicle. Intermittent LED on unit to
signal operating status. Coil Image Figure (Reference) The 12V
voltage which flows from the primary coil is boosted to approximately 15,000 -
20,000 volts at the secondary coil, and then ignites the plug. Since the
electrical energy of the secondary coil is directly influenced by the energy of
the primary coil, maintaining a stable supply of electric power to the primary
coil is ideal.
Transistor : The switch that receives the
signal of ignition from the ECU. Adjusting to ignition timing, it turns ON/OFF.D1(Diode) : The one-way circuit that prevents the transistor from being
damaged by back electromotive force.
Great Product 
