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)

Epica introduce

The original Jingcheng model originated from the Korean Daewoo Midsize Car Baron. In 2002, General Motors acquired Daewoo Corporation and incorporated multiple Daewoo models into the Chevrolet brand. Epica was introduced to China for production. The entire vehicle showcases a European sports sedan style that emphasizes strength, and has the longest body among mid size cars. The interior space is spacious and comfortable, and is equipped with multiple high-end car configurations. The interior decoration and space matching are very reasonable; They respectively use the D-TEC 2.0-liter DOHC16 valve gasoline engine from General Motors Australia's Horton, and the 4HP-16 electronic automatic transmission from Germany's ZF company, known as the world's top supplier of sedan transmissions