SEALING DEVICE FOR TURBOCHARGER

摘要

Disclosed is a sealing device for a turbocharger comprising a sealing body (24) and a retaining means (29). The sealing body (24) is formed in a ring shape and has a fitting/fixing part (25) and a clearance opposing part (27). The fitting/fixing part (25) is hermetically fitted and fixed to a step part (22) which is formed facing a scroll passage (8) in a turbine housing (1). The clearance opposing part (27) opposes the outer circumference part of a turbine-housing-side exhaust introduction wall (9a) of an exhaust nozzle (10) with there being a clearance (S) between the clearance opposing part (27) and said outer circumference part. The sealing body (24) is provided in such a way that the clearance opposing part (27) is pressure-attached to the turbine-housing-side exhaust introduction wall (9a) due to the difference between the fluid pressure of the scroll passage (8) and the fluid pressure in the clearance (S). The retaining means (29) is formed at the fitting/fixing part (25) of the sealing body (24) and prevents separation of the fitting/fixing part (25) from the step part (22).