A nozzle ring for a turbocharger

Abstract

The invention discloses a nozzle ring used for a turbocharger. The nozzle ring comprises a mounting plate, a shifting plate and a plurality of shifting forks. The shifting plate is rotatably arranged on one end face of the mounting plate. A plurality of mounting grooves are formed in the end face, away from the mounting plate, of the shirting plate. The multiple mounting grooves are arranged at intervals in the circumferential direction of the shifting plate. The shifting forks and the mounting grooves are arranged in one-to-one correspondence. One end of each shifting fork is rotatably arranged in the corresponding mounting groove. An annular protrusion edge is arranged on the end face, close to the mounting plate, of the shifting plate. The annular protrusion edge is rotatably arranged on the circumferential wall of the mounting plate in a sleeving mode. According to the nozzle ring, rolling wheels and rolling pins are not needed, the structure of the nozzle ring is simple, and the shifting plate is fixed firmly.

Description

technical field [0001] The invention relates to a nozzle ring for a turbocharger. Background technique [0002] The nozzle ring is installed in the turbocharger to control the amount of exhaust gas entering the turbine wheel to control the speed of the turbocharger. The nozzle ring generally includes a mounting plate, a toggle plate, multiple shift forks and multiple blades, the toggle plate is rotatably arranged on one end surface of the mounting plate, and a plurality of shift forks are arranged on one end of the mounting plate at intervals in the circumferential direction. On the end face, a plurality of blades are arranged on the other end face of the mounting plate at intervals in the circumferential direction, and the shift forks are arranged in correspondence with the blades one by one. The other ends are connected to the corresponding blades through a pin shaft. The mounting plate is provided with a mounting hole for passing through the pin shaft. When the dial rota...

AI Technical Summary

Problems solved by technology

[0003] And as described in the patent document of Patent No. 200920064784.9, in the current nozzle ring, it is also necessary to set a plurality of rollers on one end surface of the mounting plate, the rollers are rotatably nested on the roller pins, and the roller pins are fixed on the mounting plate , the roller is used to position the dial in the axial and radial directions. The structure of the nozzle ring is more complicated due to the need to set the roller and the roller pin, and the roller is sleeved and fixed on the roller pin. When the nozzle ring is vibrated, the roller The fixation with the roller pin is not stable, and the roller is easy to shake relative to the roller pin, which makes the positioning of the dial unstable

Images