Ignition coil for a distributor-based ignition system (1960-1980 Saab 96)
Coil-on-plug ignition coil (2011 Honda Odyssey)
Cross-section view of an coil-on-plug ignition coil
An ignition coil is used in the ignition system of a spark-ignition engine to transform the battery voltage to the much higher voltages required to operate the spark plug(s). The spark plugs then use this burst of high-voltage electricity to ignite the air-fuel mixture.
The ignition coil is constructed of two sets of coils wound around an iron core. Older engines often use a single ignition coil which has its output directed to each cylinder by a distributor, a design which is still used by various small engines (such as lawnmower engines). Modern car engines often use a distributor-less system (such as coil-on-plug), whereby every cylinder has its own ignition coil.
Diesel engines use compression ignition and therefore do not have ignition coils.
An ignitioncoil is used in the ignition system of a spark-ignition engine to transform the battery voltage to the much higher voltages required to operate...
magneto and trembler coil systems, which were superseded by Distributor-based systems (first used in 1912). Electronic ignition systems (first used in...
used in the ignition system of older spark ignition engines. The distributor's main function is to route electricity from the ignitioncoil to each spark...
induction coilignition). Ignition magnetos were largely replaced by ignitioncoils once batteries became common in cars, since a battery-operated coil can...
times associated with high inductance coils used in inductive discharge ignition (IDI) systems, making the ignition system more suitable for high engine...
as the ignitioncoils in internal combustion engines and in physics education to demonstrate induction. An induction coil consists of two coils of insulated...
A trembler coil, buzz coil or vibrator coil is a type of high-voltage ignitioncoil used in the ignition system of early automobiles, most notably the...
spark ignition, i.e., gasoline engines. Today it is still widely used in coil-on-plug, coil-near-plug and in coil packs in distributorless ignitions. An...
power to the starter solenoid and the ignition system components (including the engine control unit and ignitioncoil), and is frequently combined with the...
control of ignition timing. The purpose of the contact breaker is to interrupt the current flowing in the primary winding of the ignitioncoil. When the...
tension may also be referred to as HT. Many modern engines use coil-on-plug ignition, a design that does not use spark plug wires. Spark plug wires have...
chamber. As part of the engine's ignition system, the spark plug receives high-voltage electricity (generated by an ignitioncoil in modern engines and transmitted...
called "Unitized Ignition" was optional on 1972 and 1973 Pontiacs. [citation needed] Most—but not all—HEI systems have the ignitioncoil mounted in the...
In spark-ignition internal combustion engines, knocking (also knock, detonation, spark knock, pinging or pinking) occurs when combustion of some of the...
National Ignition Facility, fusion research facility at the Lawrence Livermore National Laboratory in Livermore, California, US Ignitioncoil, an induction...
Induction coil, a type of electrical transformer used to produce high-voltage pulses from a low-voltage direct current supply Ignitioncoil, used in internal...
An electromagnetic coil is an electrical conductor such as a wire in the shape of a coil (spiral or helix). Electromagnetic coils are used in electrical...
In a spark ignition internal combustion engine, ignition timing is the timing, relative to the current piston position and crankshaft angle, of the release...
Electronic Distributorless Ignition System is a computer-controlled ignition system developed by Ford that uses an ignitioncoil for each pair of cylinders...
components. Modern ignition systems do not have breaker points, which have been almost entirely replaced by electronic systems. Modern ignitioncoils outlast most...
defined minimum operating temperature. Diesel engines, unlike common spark-ignition engines, do not use spark plugs to ignite the air-fuel mixture. Instead...
Systems commonly controlled by an ECU include the fuel injection and ignition systems. The earliest ECUs (used by aircraft engines in the late 1930s)...
use spark ignition. High voltage for the spark this may be provided by a magneto or an ignitioncoil. In modern car engines, the ignition timing is managed...
(petrol) engines subject to engine knocking (also known as "detonation", "pre-ignition", or "pinging") if lower octane-rated fuel is used. This can reduce efficiency...
useful voltages could be produced by winding multiple turns of wire into a coil. Wire windings can conveniently produce any voltage desired by changing the...
of solid-state ignition, automobile ignition systems commonly included a ballast resistor to regulate the voltage applied to the ignition system. For simple...
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