Abstract: A turbocharger includes a gripping unit gripping a turbine-housing side flange portion and a bearing-housing side flange portion to couple a turbine housing and a bearing housing. In a state where the turbine housing and the bearing housing are coupled by the gripping unit, an elastic force in a direction to separate the turbine-housing side flange portion and the bearing-housing side flange portion from each other is applied to each of the turbine housing and the bearing housing.

Abstract: A turbocharger includes a gripping unit gripping a turbine-housing side flange portion and a bearing-housing side flange portion to couple a turbine housing and a bearing housing. In a state where the turbine housing and the bearing housing are coupled by the gripping unit, an elastic force in a direction to separate the turbine-housing side flange portion and the bearing-housing side flange portion from each other is applied to each of the turbine housing and the bearing housing.

Abstract: In a cooling device for a high temperature pipe, a high temperature pipe is efficiently cooled, and cooling performance is improved. A cooling device (10) for a high temperature pipe that cools a surface to be cooled (104) of a pipe (100) as a high temperature pipe includes: a cooling medium supply header (11) that is disposed so as not to shield heat dissipation by radiation from the surface to be cooled (104) to the periphery, and allows a cooling medium to flow out toward the surface to be cooled (104); and a cooling medium supply device (12) that supplies the cooling medium to the cooling medium supply header (11).

Abstract: An evaluation apparatus of optical parts has a holder having a frame which can hold a lens fixedly and another lens movably, a chart having a first transmission hole group and a second transmission hole group arranged on circumferences of concentric circles, a light source which irradiates the chart with a luminous flux, a CCD camera for picking up an image of the luminous flux transmitted through the first and second transmission hole groups, a processor, and a driving unit. By using a result picked up by the CCD camera, the processor computes coordinates of a center of each circle, on a circumference of which the luminous flux is imaged, and then it calculates an amount movement for the movably held lens by computing a distance between the respective centers of the circles. The driving unit moves the lens on the basis of this calculated amount of movement.

Abstract: An evaluation apparatus of optical parts has a holding means having a frame which can hold a lens to be held in a fixed state and a lens to be held movably, a chart which has a first transparent hole, and a second transparent hole arranged at a concentric circle shape, a light source which irradiates a luminous flux to the chart, a CCD camera which pick up an image of the luminous flux which transmitted the first and second transparent holes, an operation processing section and a moving means. By using a result Imaged by the CCD camera, the operation processing section computes the main coordinate of a circumference of each luminous flux, and then it calculates an amount of movement of the lens by computing a distance between the main coordinate. Based on this amount of movement, the moving means moves the lens.