| 摘要 |
<p>With a simple structure, gas is prevented from leaking from higher to lower pressure sides through a gap between a turbine housing and an exhaust nozzle. A turbocharger has an exhaust nozzle 9 arranged between a scroll passage 8 of a turbine housing 1 and a turbine impeller 4, a gap 19 formed between a rear surface 24 of the exhaust nozzle 9 and the turbine housing 1 and a sealing device 25 for closing the gap 19. The sealing device 25 has a seal member 29 which is C-shaped, i.e., an annulus with a part cut out to provide a slit, and has an inner peripheral end arranged along the turbine housing 1. The seal member 29 is configured such that, by the action of gas pressure in the scroll passage 8, the outer peripheral end 33 approaches the rear surface 24 of the exhaust nozzle 9, slit ends approach to each other, and the inner peripheral end 28 approaches the turbine housing 1, leading to reduction in diameter.</p> |
