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 A7 introduce

The Audi A7 is a four door sports luxury Coupe sports car positioned between the C-class executive/official and D-class luxury sedan. It is slightly larger in size than the unaffiliated C-class executive sedan and smaller than the D-class luxury sedan. In terms of power, it is equipped with two V6 engines, 2.8L.3.0T, with maximum power outputs of 220 horsepower and 310 horsepower, respectively, The S7 is equipped with a 420 horsepower 4.0T V8 twin turbocharged engine. The Audi A7 Sportback combines the sporty elegance of a sports car, the comfort of a luxury sedan, and the practicality of a station wagon. With its emotionally beautiful design, innovative technology that surpasses the times, and legendary birth history, it has opened up a new niche market for Audi - the five door high-end sports car market