Considering solving the failure that the operation state of the turbocharger of a type of diesel engine cannot convert automatically from 1TC to 2TC,this paper analyzed the Sequential Turbo Charging(STC)control system,the alarm of high back pressure of exhaust from side A,smoke alarm and load alarm.The analysis results show that cross-blowy due to a worn-out rupture in the pipeline leads to failure,verified by the ship trail run.
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