Igniting a Spark
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.
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How a breath alcohol ignition interlock device works
Ignition interlock devices, or IIDs, are installed in a vehicle when a motorist has been convicted of a DUI related offense. This device resembles the breathalyzer that law enforcement officials administer if they suspect a driver of intoxication. The purpose of an IID is to ensure that motorists are not driving while intoxicated.
How IIDs Function
Upon entering a car, IIDs require a driver to exhale into a tube that checks for alcohol content. The ignition will not start the engine if the driver a) does not provide a sample of his/her breath, or b) if the sample provided contains a level of alcohol that exceeds the allowable amount programmed into the IID (typically.02 or.04).
Once the driver passes the initial test and the vehicle turns on, the IID requires random breath samples while en route. This feature discourages intoxicated drivers from having a friend blow into the IID, enabling them to drive away while drunk. If a driver fails to provide an acceptable breath sample, the IID records the instance and activates an alarm system that involves the horn and lights, consequently, encouraging the driver to pull over web site monitoring Read the rest of this entry »
Tags: IgnitionRelated posts
Jeep Ignition Control System Care
One wakes up with a spring in one’s steps, a grin in the face and the impulse to spread cheer and good will to one’s fellow humans. There’s only one problem. The Jeep refuses to budge. Such problems are enough to turn one’s sunny mood dour and in some cases, to induce one to ball one’s hand into a fist and give serious consideration to using it against any available surface, slapping it against the front seat or against the dashboard.
In light of such conditions, it is safe to assume that one is encountering Jeep Ignition Control problems. The Jeep Igniton Control System may not seem quite that significant to a number of people, but for those who understand how little details contribute to a whole, to a coherent entirety, the Ignition Control Assembly will prove agreeably interesting.
Tags: Care, Coil, Coils, CONTROL, Ignite, Ignition, ignition coil, ignition coils, JEEP, System