Coil packs are used in automotive distributorless ignition systems and perform the same function as traditional ignition coils. Each coil pack can be separated or combined into a single unit and is usually activated by an electronic control unit or ignition module. Distributorless ignition systems eliminate the need for a distributor and rotor system and use a computer to fire individual coils at the appropriate time. Each coil pack generally consists of at least a primary and secondary winding and can be connected to its own spark plug via a spark plug wire. Some larger motors may have two or more coil pack units, each of which may have several internal windings and are responsible for several cylinders.
Coil packs are a component typically used in automotive distributorless ignition systems (DIS). They perform roughly the same function as traditional ignition coils, although there will generally be one coil for each cylinder rather than one for the entire engine. Each coil pack can be separated, or they can be combined into a single unit. When coil packs are split into individual units, they are usually located close to the firing cylinders rather than in a central location. Coil packs are usually activated by an electronic control unit (ECU) or ignition module, so that each can fire its cylinder at the necessary time.
In a traditional ignition system, a coil or magneto typically generates a large voltage that can then be sent to the correct cylinder using a distributor and rotor system. Distributorless ignitions eliminate the need for several components associated with those systems, primarily the distributor and rotor. Instead of using the mechanical movement of the camshaft to time the spark through a rotor, these systems can use the computer to fire individual coils at the appropriate time. This is often accomplished through the use of a cam or crankshaft sensor.
Each coil pack generally consists of at least a primary and secondary winding, although there may be other components as well. All coil packs are supplied with battery voltage, which can be used by the primary winding to create a magnetic field. When prompted by the ECU or by other means, the primary winding voltage can be cut off. This can generate a much higher voltage in the secondary winding of the coil pack, which can be used to fire a spark plug. In most distributorless ignition systems, each coil pack can be connected to its own spark plug via a spark plug wire.
Certain distributorless ignition systems use a slightly different setup. Some larger motors may have two or more coil pack units, each of which may have several internal windings and are responsible for several cylinders. Each set of windings in these coil packs will generally correspond to a single cylinder and connect to a spark plug wire. Other setups may have as many coil packs as cylinders, each located near the spark plug that it is responsible for firing. Another variation is the coil on plug (COP), which can integrate each coil pack with a spark plug boot.
Protect your devices with Threat Protection by NordVPN
