Rus Articles Journal

How are arranged also what is done by high-voltage wires of the car?

to Carry out and protect

High-voltage wires transfer impulses of a high voltage from the ignition coil to candles. Depending on system of ignition the generated tension makes from 25 kV, to 50 kV. Transferring energy, high-voltage wires have to suppress the strong hindrances arising owing to electric impulses.

special requirements are imposed To reliability of high-voltage wires: resistance to hostile environment under a cowl a car, ability to maintain various temperature condition (from - 60 C to +240 C) and not to lose at the same time the conducting qualities. The design of wires, has to prevent leakage of current up to contact with tips of candles.

You should not save on wires

Low-quality or faulty wires are capable to put some devices of the car, for example electronic system out of action, and also to complicate operation of the engine other troubles. Leakage of current or the increased resistance lead to reduction of force of an impulse and as a result, or to ignition delay, or to to a troyeniye and to dying down the engine on the raised turns, or in general to lack of a spark, especially if candles have even small pollution. As a result dynamics falls, fuel consumption (for 4 - 7%) and toxicity of an exhaust grows.

Three categories of wires

High-voltage wires consist of a conducting vein, isolation (protective layer), metal contacts and caps. An additional element are combs which collect wires in a plait. All high-voltage wires can be referred to three categories conditionally.

the First category is wires with a copper multicore conducting vein with a cover from plastic PVC. The second - single-core wires with isolation from PVC or EPDM (a kind of polyurethane). Similar products demand additional pomekhopodavitelny resistors. The third category - high-voltage wires where as the core the conducting vein from nonmetallic material, whether it be fiber glass, polymers, graphite, flax, cotton, kevlar, and also their combinations is used. As isolation silicone or from silicone from silikonosoderzhashchy rubber is applied.

The choice between the price and a resource

All three categories according to the characteristics completely comply with technical requirements and differ in two factors: price and resource. For example, silicone wires are capable to serve not less than 160 000 kilometers without restriction of term of operation. At the same time not silicone - 30. 000 - 50. 000 kilometers or 2 - 3 years of operation in severe Russian conditions. At the same time more technological silicone wires are 3 - 4 times more expensive than the fellows.