Abstract: The invention relates to a method for fastening an exhaust gas converter module (1) to an internal combustion engine (2) of a motor vehicle, wherein the exhaust gas converter module (1) is first connected to a pipe section of the exhaust gas system arranged upstream in the flow direction of the exhaust gas and is then pivoted about a pivot axis (S), wherein a two-part module bracket (4) engages with an engine bracket (3) and is coupled with the engine mount (3) in this installation position by a screw connection. The invention relates to a corresponding device having an engine bracket and a module bracket (3, 4).

Abstract: A double-walled turbocharger housing made of sheet metal includes an inner sheet metal shell which conducts hot exhaust gases and a relatively cold outer sheet metal shell which is spaced apart from the inner sheet metal shell via an air gap. The double-walled turbocharger housing is connected to a bearing flange with a circumferential collar via a common welding seam. The bearing flange is provided with a collar on an outside which faces away from the hot exhaust gas. An outer end of the inner sheet metal shell is provided with a collar with which it embraces the outer sheet metal shell. Both sheet metal shells are connected with the collar of the bearing flange via a common welding seam, wherein an air gap is present between the inner sheet metal shell and the outer sheet metal shell up to the outer end of the inner sheet metal shell.

Abstract: The invention relates to a method for fastening an exhaust gas converter module (1) to an internal combustion engine (2) of a motor vehicle, wherein the exhaust gas converter module (1) is first connected to a pipe section of the exhaust gas system arranged upstream in the flow direction of the exhaust gas and is then pivoted about a pivot axis (S), wherein a two-part module bracket (4) engages with an engine bracket (3) and is coupled with the engine mount (3) in this installation position by a screw connection. The invention relates to a corresponding device having an engine bracket and a module bracket (3, 4).

Abstract: In a method of making an exhaust gas collector, a collector housing is made from a tubular blank, and subsequently, an inlet duct is formed through a widening process to provide a substantially rectangular cross section with rounded narrow sides. The inlet duct is provided with a head flange. At the outlet side, the collector housing is necked by a press-forming process so as to shape an outlet duct having a substantially circular cross section which is reduced in size compared to the cross section of the collector housing. Attached to the outlet duct is an end flange.

Abstract: In a method of making an exhaust gas collector, a collector housing is made from a tubular blank, and subsequently, an inlet duct is formed through a widening process to provide a substantially rectangular cross section with rounded narrow sides. The inlet duct is provided with a head flange. At the outlet side, the collector housing is necked by a press-forming process so as to shape an outlet duct having a substantially circular cross section which is reduced in size compared to the cross section of the collector housing. Attached to the outlet duct is an end flange.