点火线圈树脂击穿故障分析

Ignition Coil Resin Breakdown Issue Analysis

点火线圈是汽车发动机点火系统中的一个重要执行器,其故障会导致发动机怠速抖动。介绍了神龙汽车有限公司使用的几种类型的点火线圈。详细解析了初级线圈骨架原材料的差异使树脂在温度降低的过程中热形变产生裂纹,从而造成点火线圈次级电压偏低、发动机怠速抖动的故障。并提供了改善措施和经验反馈,这对后续点火线圈的设计验证和品质管理具有较强的指导意义。

Ignition coil is an important component in the engine ignition system, whose issue may cause engine idling shaking. This article introduces some types of ignition coils used in DPCA, and analyzes the engine idling shaking and coil lower secondary voltage issues caused by the difference in primary coil frame raw material, which lead to hot deformation crack when the temperature decreasing. Relevant solutions and experience feedback are then provided, which are valuable guidance for the ignition coils design validation and quality management.