ignition coil introduce

With the development of gasoline engines in automobiles towards high speed, high compression ratio, high power, low fuel consumption, and low emissions, traditional ignition devices are no longer suitable for use. The core components of ignition devices are ignition coils and switch devices. By increasing the energy of the ignition coils, the spark plug can generate sufficient energy to produce sparks, This is the basic condition for the ignition device to adapt to the operation of modern engines. The ignition coil is divided into two types according to the magnetic circuit: open magnetic and closed magnetic. The traditional ignition coil is used with an open magnetic type, and its iron core is stacked with about 0.3 millimeters of silicon steel, with secondary and primary coils wound around the iron core. The closed magnetic type uses an iron core similar to III to wrap around the primary coil, and then wraps around the secondary coil outside. The magnetic field line is composed of an iron core to form a closed magnetic circuit. The advantage of the closed magnetic ignition coil is that it has less magnetic leakage, Due to its small energy loss and volume, electronic ignition systems generally use closed field ignition coils)

Audi A4L introduce

The Audi A4L is an entry-level luxury B-class sedan produced by FAW Audi. The characteristics of this car are its atmospheric and stable body, meticulous workmanship, solid materials, rich configuration, spacious space, and good handling A4L was officially released on November 16, 2008, and the front face design of the new Audi A4L continues to use the family's expensive sports car design style. The price range of Audi A4L is 272800-578100. The domestic version of the new generation Audi A4 was officially named: Audi A4L. Audi A4L is a new car that Audi only launched in the Chinese Mainland market. The relationship between the new car and A6 and A6L is similar, and it is also after foreign models are made in mainland China, A model derived from changes in configuration and market demand. After higher level mid to high end luxury cars have chosen to be lengthened in China and received good market feedback, this idea is now extending to its lower level mid size car market. Compared with the European version of the Audi A4, the domestic version of the Audi A4L has lengthened the body length by 60mm, reaching 4763mm, and the wheelbase has been lengthened by 61mm, reaching 2869mm, Satisfying the higher requirements of Chinese users for rear passenger space