Welding on Engines with Electronic Controls
需要正确的焊接步骤来避免损坏下述部件:
- 发动机电子控制模块 (ECM)
- 清洁排放模块(CEM)
- 传感器
- 相关部件
也应考虑用于从动设备的部件。 如可能,拆下需要焊接的部件。 当在配备 ECM 的发动机上进行焊接而又不可能将部件拆下来时,必须遵循下述步骤。 本步骤可尽可能避免电子部件损坏。
- 停止发动机。 断开 ECM 的电源。
- 确保关断通往发动机的燃料供应。
- 从蓄电池上断开蓄电池负极电缆。 如果安装了蓄电池断路开关,应断开此开关。
- 从导线线束上断开所有电气部件。 包括下列部件:
- 从动设备的电气部件
- ECM
- 传感器
- 电动燃油泵
- 电控阀
- 继电器
Show/hide table注意 切勿将电气零部件(电子控制模块或电子控制模块传感器)或电子零部件的接地点用作电焊机的接地点。
Show/hide table图 1 g01075639 使用上面示例。 从焊机到焊机接地夹的电流不会损坏任何相关部件。
(1) 发动机
(2) 焊条
(3) 钥匙开关处于 OFF(断开)位置。
(4) 蓄电池切断开关处于打开位置
(5) 已断开的蓄电池电缆
(6) 蓄电池
(7) 电气/电子部件
(8) 焊接的部件与任何电气/电子部件之间的最小距离
(9) 要焊接的部件
(10) 电焊机的电流通路
(11) 电焊机接地卡箍 - 如可能,将焊接设备的接地卡箍直接连接到待焊接发动机部件上。 尽可能将夹子夹在焊接点附近。 就近定位可避免焊接电流损坏发动机轴承、电气部件和其他部件。
- 防止焊接碎屑和/或焊接飞溅物损坏导线线束。
- 采用标准焊接步骤将物料焊接在一起。
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