Abstract: The invention relates to a mixer for an exhaust gas system for mixing an additive into an exhaust gas flow of an internal combustion engine, having a first shell and at least a second shell which are arranged successively in the circumferential direction in relation to a center axis, each shell having at least two shell edges that are arranged offset in the circumferential direction and which each form a flow edge, wherein the flow edges of two circumferentially adjacent shell edges of two different shells delimit an inflow opening, such that at least one pipe end arranged coaxially with the center axis is provided with a circumferential pipe profile that has a nominal radius Rn and is used for connection to an exhaust pipe, the pipe end being formed by the circumferentially adjacent shells.

Abstract: The invention relates to a mixer for an exhaust gas system for mixing an additive into an exhaust gas flow of an internal combustion engine, having a first shell and at least a second shell which are arranged successively in the circumferential direction in relation to a center axis, each shell having at least two shell edges that are arranged offset in the circumferential direction and which each form a flow edge, wherein the flow edges of two circumferentially adjacent shell edges of two different shells delimit an inflow opening, such that at least one pipe end arranged coaxially with the center axis is provided with a circumferential pipe profile that has a nominal radius Rn and is used for connection to an exhaust pipe, the pipe end being formed by the circumferentially adjacent shells.

Abstract: A generator is configured to generate electrical power from a natural fluid flow, such as wind. The generator has interacting devices for interacting with the fluid flow to generate relative rotation between a first mechanical member (301) and a coaxial second mechanical member (303). The first mechanical member has a plurality of permanent magnets (301) attached thereto so as to define a plurality of magnetic poles. The magnetic poles generate a radial magnetic field that also extends towards the coaxial second member (303). The second member includes a plurality of radially extending teeth (304) that define open slots (305) therebetween. A respective pre-formed coil (306) is located over each alternate tooth such that a single coil winding occupies each of said slots and said coil windings generate an electromotive force during the relative rotation.