Abstract: A spiral casing for a turbine of a turbocharger is made from thin (0,2 to 2 mm thick) sheet metal. The spiral casing can be made from two matching parts and can be insulated.

Abstract: The invention concerns a casing aggregate for the turbine of an exhaust turbocharger. The invention is identified by the following characteristics: a spiral casing adapted for surround the running wheel of the turbine; a tongue-like wall part (tongue) in the inside of the spiral casing; an inlet connection; an outlet connection; a flange to connect to a bearing casing; wherein the casing aggregate is manufactured of thin-walled precision casting; wherein the casing aggregate is made of at least two parts, so that at least one separation joint is present; and the separation joint is arranged as follows: it runs in an axially perpendicular level; it runs along the apex line of the spiral casing; it extends over an arc of a circle of approximately 270 degrees; it lies outside of the area of the tongue.

Abstract: A turbocharger comprising at least one turbine wheel supplied with exhaust gas from a combustion motor. The amount of gas supplied is determined by a fluid control arrangement to which an actuation device is assigned for generating a controlling movement for the fluid control arrangement. In addition, a transmitting mechanism for this movement comprising an adjusting device is presented by which the control movement may be adjusted.

Abstract: To allow a simplified manufacture by casting the spiral casing for a turbine is divided into two matching parts which can be joined by welding or the like. The separation line between the parts runs along the apex of the spiral casing and lies essentially in a plane perpendicular to the turbine axis.

Abstract: A spiral casing for a turbine of a turbocharger is made from thin (0,2 to 2 mm thick) sheet metal. The spiral casing can be made from two matching parts and can be insulated.