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)

Volvo XC40 introduce

The Volvo XC40 is the first model produced by Volvo Cars based on advanced CMA basic module architecture. It is the first compact SUV in Volvo Cars. At the 2018 Beijing International Auto Show, Volvo Cars unveiled three new SUV product matrices for the world: the XC90. The all-new XC60 and XC40. The XC40 T5 plug-in hybrid version is the world's first public appearance. The Volvo XC40 has comprehensively improved in design, technology, and driving control, Its appearance adopts the latest design language, with comprehensive adjustments to the height and width of the body. The interior space incorporates numerous humanized designs and is equipped with the Pilot Assist system, the new generation City Safety urban safety system Sensus intelligent in car interaction system and other security, connectivity, and information entertainment technologies. The Volvo XC40 model was awarded the 2018 European Car of the Year title. On April 16, 2019, the all-new Volvo XC40 was pre-sale at the Shanghai Auto Show