TWIN SCROLL TURBINE HOUSING OF TURBO CHARGER

摘要

PURPOSE: A twin-scroll turbine housing of a turbo charger is provided to enhance durability by preventing the generation of cracks due to stress concentration since the root of a barrier maintains a much thicker tapered shape and thus thermal stress is uniformly distributed over entire barrier. CONSTITUTION: A twin-scroll turbine housing of a turbo charger comprises a first scroll flow path(42), a second scroll flow path(43) and a central barrier(44). The flow paths surround a turbine wheel. The central barrier forms two scroll flow paths. The central barrier is formed so that its root becomes 1.5 times the thickness of a housing. The central barrier has a tapered shape, in which the wall thickness of the central barrier becomes thinner toward the free end(44b). The free end of the central barrier is formed in a round shape. The tapered angle of the central barrier is 12~16.