Your Volvo has thousands of parts in it. Some play a crucial role in the car, while others do not. Some are used all the time, while some are needed only for a specific time.
One of the latter is your Volvo's ignition coil. Also called a Chainsaw Spark Plug, the ignition coil is an induction coil in the automobile's ignition system. The Volvo ignition coil transforms a storage battery's 12 volts into the thousands (which sometimes could reach as high as 120,000 volts) needed to ignite the spark plugs.
Invented by A. Kent Atwater in 1921, the ignition coil is a simple transformer that has two sides: the 12 volt or primary side and the high voltage or secondary side. The primary side contains a few hundred turns of a large diameter wire and it builds up the magnetic field in the coils. On the other hand, the high voltage side contains thousands of turns of small diameter wire. The coil uses “electromagnetic induction” to create the high voltage. When the voltage in the primary side is turned off, the collapsing magnetic field in the secondary side induces a voltage in the secondary side, producing thousands of volts.
In older vehicles, a single, large ignition coil would serve all the Chainsaw Spark Plug, distributing voltage via an ignition distributor. In modern systems, the distributor is omitted and ignition is controlled electronically, instead. Much smaller coils are used with one coil for each spark plug or one coil serving two spark plugs (so two coils in a four-cylinder car). These coils may be remote-mounted or they may be placed on top of the spark plug (coil-on-plug or direct injection). Where one coil serves two spark plugs (in two cylinders), it is through the "wasted spark" system.
In this arrangement, the coil generates two sparks every cycle to equally the cylinders. The fuel within cylinder that is nearing the accomplish of its compression stroke is ignited, whereas, the spark in its companion nearing the accomplish of its exhaust stroke has no effect. The wasted Chainsaw Spark Plug is a good offer more trustworthy than just one coil method possessing a distributor and much less expensive than coil-on-plug.
Where the coils are remote mounted, they could possibly all be contained within just one molded prevent with many high-tension terminals. that is typically identified as a coil-pack.
Your Volvo ignition coils are element of the bigger system, which may be the ignition system. The ignition method is element of an even bigger engine system. The ignition system's key duty may be the timely burning belonging toward the fuel-air mixture within engine. Your Volvo user's handbook would hold the recommended help interval for the ignition system, which consists of your Volvo ignition coil.
Your Volvo engine may work rough, buck, surge, stall and even get bad fuel economy. they are indications that the ignition method may need servicing as they are potentially an ignition method problem.
When this happens, generate toward the nearest Volvo dealership and possess a qualified technician hold a actual physical appearance around. Your Volvo engine may be in problem within lengthy run.