Flexible exhaust pipe coupling

F - Mech Eng,Light,Heat,Weapons – 01 – N

Patent

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Details

F01N 3/00 (2006.01)

Patent

CA 2633310

A device for connecting pipes in a heavy truck exhaust system includes a flexible sleeve joined to both connecting pipes and a flow guide connected or formed to an upstream pipe and extending through the flexible sleeve into the downstream pipe. The flow guide may have a frustoconical shape converging toward an outlet end with an outlet rim that flares radially outward. An inlet rim of the downstream pipe converges radially inward to prevent backflow into the joint region.

L'invention concerne un dispositif pour raccorder des tuyaux dans un système d'échappement pour véhicule poids lourd, qui comprend un manchon flexible assemblé aux deux tuyaux à raccorder et un guide d'écoulement relié à ou formé sur le tuyau amont et s'étendant à travers le manchon flexible jusque dans le tuyau aval. Le manchon flexible peut avoir une forme tronconique convergeant vers une extrémité de sortie, avec une couronne de sortie qui s'évase radialement vers l'extérieur. Une couronne d'entrée du tuyau aval converge radialement vers l'intérieur pour empêcher un reflux dans la zone d'assemblage.

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