Cause Analysis and Solution Measures of Piston Cracking in a High Speed Gas Engine
In response to the quality problem that occurred during the operation of a high-speed gas engine,during disassembly inspection,it was found that one cylinder piston had a cracking quality problem.Based on the quality problem of the piston and the requirements of relevant quality system documents,a fault tree was estab-lished with the failure of piston combustion chamber cracking as the top event.An anatomical analysis was con-ducted on the faulty piston,and it was found that the radial displacement of the cooling oil passage inside the pis-ton was severe,which did not meet the design requirements of the drawing.Based on this analysis,the radial displacement of the cooling oil passage inside the piston was determined as the cause of this fault.Finally,indus-trial CT was used to retest all pistons,and the faulty and untested pistons were replaced.
Gas enginePistonPiston cooling oil chamberRadial displacement of the piston cooling oil chamberIndustrial CT
NETL
NSTL
万方数据
