Ignition coil primary bobbin issue analysis

摘要

Ignition coil is an important component in the engine ignition system, the ignition coil issue may cause engine idling shaking. I present some types of ignition coils used in this article nowadays, and analyze the engine idling shaking, coil secondary voltage lower quality issue caused by the different primary bobbin raw material hot deformation when the temperature decreasing, make the action plans and lesson learns. It can be used for the ignition coils design validation and quality management later.