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An ignition coil (also called a spark coil) is an induction coil in an automobile's ignition system that transforms the battery's low voltage to the thousands of volts needed to create an electric spark in the spark plugs to ignite the fuel. Some coils have an internal resistor, while others rely on a resistor wire or an external resistor to ...
Ignition Coil DG508 8 Pack High Performance High Energy for Ford F-150 F150 F250 F-250 F-350 4.6L 5.4L V8 DG508 DG457 DG472 DG491 EXPEDITION MUSTANG CROWN VICTORIA LINCOLN MERCURY (Yellow)
The coil is a simple device -- essentially a high-voltage transformer made up of two coils of wire. One coil of wire is called the primary coil. Wrapped around it is the secondary coil. The secondary coil normally has hundreds of times more turns of wire than the primary coil. Current flows from the battery through the primary winding of the coil.
Ignition Coil Pack Set of 4 - Replaces DG541, DG507, 4M5G12A366BC, C1453 - Fits Ford Escape, Focus, Transit Connect, Mercury Mariner, Mazda 3-2.0L, 2.3L - 2003, 2004 ...
Newer ignition systems tend to use an individual coil-on-plug or coil pack, which assigns one coil to each engine cylinder or pair of cylinders. Engine issues may be caused by failed coils or spark plug cables. Ignition Coil Problems Ignition coils may be the cause of problems, or problems may be caused by failing spark plug wires.
A trembler coil, around 1915. The mechanism on the end is the "trembler". A trembler coil or vibrator coil is a type of high-voltage ignition coil used in the ignition system of early automobiles, most notably the Benz Patent-Motorwagen and the Ford Model T. Its distinguishing feature is a vibrating magnetically-activated contact called a trembler or interrupter, which breaks the primary current, generating multiple sparks during each cylinder's power stroke. Trembler coils were first used on the 1886 Benz automobile, and were used on the Model T until 1927.
Antique induction coil used in schools, from around 1900, Bremerhaven, Germany Induction coil showing construction, from 1920. An induction coil or "spark coil" (archaically known as an inductorium or Ruhmkorff coil after Heinrich Ruhmkorff) is a type of electrical transformer used to produce high-voltage pulses from a low-voltage direct current (DC) supply. To create the flux changes necessary to induce voltage in the secondary coil, the direct current in the primary coil is repeatedly interrupted by a vibrating mechanical contact called an interrupter. Invented in 1836 by Nicholas Callan, with additional research by Charles Grafton Page and others, the induction coil was the first type of transformer. It was widely used in x-ray machines, spark-gap radio transmitters, arc lighting and quack medical electrotherapy devices from the 1880s to the 1920s. Today its only common use is as the ignition coils in internal combustion engines and in physics education to demonstrate induction.
Aceon Bright Ignition Coil Bosch ignition coil. Dual ignition coils (blue cylinders, top of picture) on a Saab 92. An ignition coil (also called a spark coil) is an induction coil in an automobile's ignition system that transforms the battery's low voltage to the thousands of volts needed to create an electric spark in the spark plugs to ignite the fuel. Some coils have an internal resistor, while others rely on a resistor wire or an external resistor to limit the current flowing into the coil from the car's 12-volt supply. The wire that goes from the ignition coil to the distributor and the high voltage wires that go from the distributor to each of the spark plugs are called spark plug wires or high tension leads. Originally, every ignition coil system required mechanical contact breaker points and a capacitor (condenser). More recent electronic ignition systems use a power transistor to provide pulses to the ignition coil. A modern passenger automobile may use one ignition coil for each engine cylinder (or pair of cylinders), eliminating fault-prone spark plug cables and a distributor to route the high voltage pulses.