5C307点火线圈问题确认和维修.ppt

C307 点火线圈问题确认和维修 OPD Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. CFMA pany CONFIDENTIAL C307 点火线圈问题问题描述: 车辆在启动后,怠速或行驶时出现抖动现象。其症状为感觉到一缸或多缸工作不良,出现顿挫感。该故障主要发生于热车上,严重的在冷车时也会出现,但热车后不会消失。 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. CFMA pany CONFIDENTIAL C307 点火线圈问题点火线圈结构简介: 灌注绝缘材料——环氧树脂次级线圈初级线圈 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. CFMA pany CONFIDENTIAL C307 点火线圈问题潜在原因分析: 在高压端子与铁芯之间沿外壳壁产生放电,使输出电压波形不稳定。供应商已在 2007 年8月8日通过打磨内表面放电处和 2008 年1月25日提高产品固化温度的方式对该问题进行了改进。第二次改进第一次改进改进前改进后的内表面外壳拨开后,环氧树脂与外壳接触部位较光滑。 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. CFMA pany CONFIDENTIAL C307 点火线圈问题检查方法: 供应商根据点火线圈的工作原理,使用专用工具测量点火线圈的输出电压波形,若波形不正常将分析原因;