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 a4 introduce

The Audi A4 is the name of a car, first manufactured and launched by FAW Volkswagen in April 2003. The domestically produced A4 was put into production in China on February 21, 2003, and the new domestically produced Audi A4 was officially launched on October 25, 2005. The Audi A4 is a product under the Audi company, with a high-tech appearance and higher performance than ordinary mid size cars, so it is favored by most car enthusiasts. Equipped with the latest Audi logo! The symbol of nobility was the introduction of the 1.8T.2.4L.3.0L, with only the 1.8 basic model being equipped with a manual transmission, while the rest were equipped with a continuously variable/automatic CVT transmission