Why car ignition coils are so bad in winter_Product Knowledge

by:Haiyan     2022-06-27
In summer, the air temperature is high and its density is relatively low. The combustible mixture sucked into the cylinder is easier to ignite than in winter, and the required ignition breakdown voltage is relatively low, so the probability of breakdown in summer is relatively small.
In winter, the temperature is low and its density is relatively high, so the density and concentration of the mixture sucked into the cylinder are also high, and the free movement distance between the gas ions and electrons between the spark plug electrodes is relatively close, and collision ionization is not easy to occur. . Therefore, it is necessary to increase the ignition voltage applied to the spark plug electrode, increase the electric field force acting on the ions, and make the ions accelerate and cause collision ionization before the spark can be broken down. The higher the density of the mixture, the higher the required breakdown voltage. However, the breakdown voltage is not directly related to the temperature of the mixture, but is related to the density of the mixture, because the greater the density of the mixture, the shorter the free movement distance of ions and electrons, so collision ionization is not easy to occur.
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