Patent ID: 7303370

Claim:
A fluid flow engine comprising: a turbine housing having a supply channel for a fluid and a mounting shoulder; a turbine rotor rotatably supported in the turbine housing and in fluid communication with the supply channel; a guiding grid being of variable geometry, the fluid being supplied through the guiding grid to the turbine rotor, the guiding grid comprising a nozzle ring having a number of vanes, each of the number of vanes having an axle, the number of vanes being positioned along the nozzle ring in a vane space and radially outward of the turbine rotor, the fluid being supplied through the number of vanes in adjustable quantity via the variable geometry, the nozzle ring forming an axial limitation of the vane space and having at least one bolt crossing the vane space, the at least one bolt maintaining an axial distance in the vane space for free movement of the number of vanes; and a mounting ring positioned opposite the nozzle ring, wherein the mounting ring rests on the mounting shoulder of the turbine housing, wherein the at least one bolt is inserted between the nozzle ring and the mounting ring and is affixed across the axial distance of the vane space by a connection material which was applied to at least one of the nozzle ring or the mounting ring in molten condition and became temperature-stable thereafter, and wherein the at least one bolt has a smooth outer surface at least over the length passing through the vane space.