The reason that caused the common air leakage defect of the aluminum alloy wheel hub with web spokes in production was analyzed using CAE technology, and the improvement scheme of the mold for wheel hub gravity casting was proposed.

This paper introduces the course of fault discovery and handling for air leakage of extinguishing arc chamber in VD4 type circuit breaker, and analyzes the reasons of air leakage, and puts forward the countenneasures that should be adopted.

This paper analyzes the problem of air leakage of a pneumatic quick coupler and comes up with an improved design of it,followed by the cost-effective analysis of the improved design.

A remedy case about leakage of B concentrate liquid inhale hall Which causing a error BLD alarm of the Bellco formula? haemodialysis machine;

This paper is involved in the christmas tree's leakage and the cause of leakage.

The influence of sand and dust particles on piston ring dynamics and blow-by was studied by taking into account the piston secondary motion.

On the basis of simulation and analysis about ring axial movement and gas flowthrough the piston -cylinder -ring crevice, the infiuence of operation conditions and structure ofpiston and ring on the blow-by is analysed.