Engine duct carbon deposit removing method

The invention discloses an engine duct carbon deposit removing method. Oxygenolysis of potassium permanganate, pre-pickling of citrate and pickling of cold hydrochloric acid are adopted for being matched with neutralization, ultrasonic cleaning, cold water washing, hot water washing and other steps, and on the premise that a coated layer is not damaged, bath solution is long in service life and low in treatment cost, engine duct carbon deposits are removed with a chemical carbon deposit removing method. The bath solution used by the engine duct carbon deposit removing method is long in life, low in use cost, safe, environmentally friendly and effective in removing the carbon deposits in an inner cavity of an engine duct. 本发明公开了发动机导管除积碳方法，采用"高锰酸钾氧化分解"、"柠檬酸盐预酸洗"和"冷盐酸酸洗"，配合中和、超声波清洗以及冷水洗涤和热水洗涤等步骤，在不会损伤镀覆层且槽液使用寿命长、处理成本低的前提下，采用化学除积碳方法清除发动机导管积碳，本发明使用的槽液寿命长，使用成本低，安全环保，对发动机导管内腔的积碳去除有效。