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 spark coil, 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 more mature vehicles, a single, huge ignition coil would serve all the spark plugs, distributing voltage through an ignition distributor. In modern systems, the distributor is omitted and ignition is controlled electronically, instead. a good offer scaled-down coils are used using just one coil for everyor perhaps just one coil serving two spark plugs (so two coils within a four-cylinder car). These coils may possibly be remote-mounted or they may possibly be positioned on best belonging to the Spark Plug Packing (coil-on-plug or instant injection). in which just 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 the two the cylinders. The fuel in spite of the fact that in the cylinder that is nearing the carry out of its compression stroke is ignited, whereas, the spark in its companion nearing the carry out of its exhaust stroke has no effect. The wasted spark method is much more reputable than just one coil method using a distributor and much less expensive than coil-on-plug.

Where the coils are remote mounted, they may possibly all be contained within just one molded prevent with numerous high-tension terminals. this really is generally named 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 powerplant system. The ignition system's major duty may be the timely burning belonging to the fuel-air mixture in spite of the fact that in the engine. Your Volvo user's handbook would hold the recommended company interval for the ignition system, such as your Volvo ignition coil.

Your Volvo powerplant may work rough, buck, surge, stall and even get bad fuel economy. they are indicators that the ignition method may need servicing as they are potentially an ignition method problem.

When this happens, generate to the nearest Volvo dealership and possess a experienced technician hold a lookup around. Your Volvo powerplant may be in trouble in spite of the fact that in the extended run.