Responsible for transforming the vehicle's power supply system into high voltage, the coil is a fundamental part of the ignition system and is constantly evolving. Previously dependent on distributors, currently the component has static versions, using ignition cables, and individual models. According to NGK, ignition specialist brand, the changes brought several gains to vehicles, as greater system efficiency. Individual coils are divided into two types.,
pencil coil e
top coil, the latter has the advantage of reducing the possibility of overheating by having the winding at the top of the part, in a colder region. Already in the model
pencil coil, the same winding is along the coil body, getting exposed to a warmer environment. on the coils, the insulation material used is an epoxy resin., vacuum injected. When subjected to a temperature greater than 150°C, the resin may degrade over time. "The fact that this material is located at the top on the models
top coil, brings a benefit over the version
pencil coil. currently, most new vehicles have coils
top coil, following the component update trend", destaca Hiromori Mori, NGK Technical Assistance Consultant. NGK makes all types of ignition coils available to the Brazilian aftermarket. There are more than 280 applications, that include important vehicles in the Brazilian fleet, as Chevrolet Onix, Volkswagen Up!, Hyundai HB20, Toyota Corolla, Honda Civic, between others.
Revision Overhauling the coil is essential for the proper functioning of the engine. "The problem component can impact the sail, ignition cables, catalyst, among other pieces", highlights Mori that complements: "It is also important that, whenever the vehicle has problems with the coils, the mechanic check the status of the spark plugs. Very worn spark plugs overload the system, reducing the life of the coils". The coil test must be done in two steps. "After a first visual inspection, the repairer must measure the resistance of the component's primary and secondary circuits, in addition to the supply voltage to ensure that everything is in order", indicates the NGK specialist. Parts that have the integrated ignition module do not perform the endurance test. Another analysis that can also be performed with special equipment such as an oscilloscope or secondary ignition analyzer is the measurement of voltage in the secondary of the coil.. All information and references for the part review can be found on the NGK website:
www.ngkntk.com.br.
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