| 摘要 |
PROBLEM TO BE SOLVED: To provide a turbine housing with a water-cooling jacket capable of reducing a size and a weight in comparison with a conventional one, while keeping productivity and durability same as those of a conventional turbine housing composed of casting, and reducing manufacturing costs.SOLUTION: A turbine housing includes a scroll body portion 10 forming an exhaust gas flow channel inside thereof, and shells 21, 22 disposed outside of the scroll body portion 10 and defining and forming a water-cooling jacket 23 with an outer wall surface of the scroll body portion. The scroll body portion 10 is composed as a casting, and the shells 21, 22 are composed of a resin. Cushioning materials 51, 52, 53 are disposed between the scroll body portion 10 and the shells 21, 22, and the shells 21, 22 are joined to the scroll body portion 10 though any of the cushioning materials 51, 52, 53.SELECTED DRAWING: Figure 3 |
