Ignition coil with adjustable discharge breakdown capability

Abstract

The invention provides an ignition coil with adjustable discharge breakdown capability. A plurality of inductance coils are serially connected, the number of actual discharge inductance coils is judged according to switching signals, so that the discharge breakdown capability is controlled, discharge energy and discharge duration can be changed, coil charge time is controlled according to ignitionsignals, the discharge energy and the discharge duration can be changed, and the ignition coil is connected with an external high-voltage lead through an output port to drive an ignition plug. According to the ignition coil, two or more than two inductance coils are serially connected, the number of the actual discharge coils can be decided through an inside switching circuit, each inductance coil is independently charged and controlled, online adjustment of the discharge breakdown capability and the discharge energy is achieved based on rapid charge of the coil, the inductance coils output in a serially connected manner under high backpressure condition, the breakdown capability and the discharge energy are improved, one inductance coil is selected to independently output under low backpressure condition, and the service life of the ignition plug is prolonged.

Description

technical field [0001] The invention relates to the technical field of ignition engines, in particular to an ignition coil with adjustable discharge breakdown capability, especially a high-energy ignition coil meeting the requirements of different working conditions of the engine. Background technique [0002] High boost is the development trend of the engine, which also brings challenges to the ignition system. Under high back pressure, spark ignition requires higher energy and breakdown capability, but higher energy also brings greater damage to the spark plug. Under normal circumstances, reducing the discharge energy and breakdown capacity not only effectively prolongs the life of the spark plug, but also satisfies the smooth and efficient operation of the engine. The traditional ignition coil can change the discharge energy by changing the pulse width of the ignition signal, but it needs a long energy storage time when the energy demand is high, which is not conducive t...

AI Technical Summary

Problems solved by technology

The traditional ignition coil can change the discharge energy by changing the pulse width of the ignition signal, but it needs a long energy storage time when the energy demand is high, which is not conducive to high speed conditions

Images