Integral variable nozzle ring of turbocharger

Abstract

The invention relates to an integral variable nozzle ring which comprises a driving ring, three support wheels, three support wheel shafts, multiple driven rocker arms, multiple blades, a blade seat, three step pins, a rear cover and three interval pins, wherein the support wheels are installed on the blade seat through the support wheel shafts; the interference fit is adopted between the support wheels and the support wheel shafts; and the interference fit is adopted between the support wheel shafts and the blade seat. When the integral variable nozzle ring provided by the invention is assembled, the two support wheels in the three support wheels are respectively arranged between any two driven rocker arms; one support wheel is arranged in the maximum position for limiting the motion of the driven rocker arms; and the another support wheel is arranged in the minimum position for limiting the motion of the driven rocker arms. In the integral variable nozzle ring provided by the invention, the blades and the driven rocker arms are fixedly installed on the blade seat through welding; the interference fit is adopted between the blades and the blade seat; the driving ring is assembled in the clamping slot of the three support wheels; the step pins are installed on the blade seat; and the rear cover and the blade seat are riveted and connected into an integral through the three interval pins which are uniformly distributed.

Description

technical field [0001] The invention relates to the technical field of turbochargers, in particular to an integral variable nozzle ring for turbochargers. Background technique [0002] Supercharging technology is one of the main measures to improve engine power performance, and the most widely used is the use of turbocharging technology. The turbocharger uses the energy of the exhaust gas exhausted by the engine to convert it into mechanical work through the turbine, which drives the turbine impeller to rotate, and the compressor impeller coaxial with the turbine impeller also runs at the same high speed to compress the fresh air and send it to the engine Cylinder, increase the air density and air charge of the engine cylinder, thereby increasing the power of the engine, improving the combustion conditions of the fuel, and fully burning the fuel, thereby reducing fuel consumption and reducing the proportion of toxic substances in the exhaust gas discharged into the atmospher...

AI Technical Summary

Problems solved by technology

[0006] The existing variable nozzle ring has the following deficiencies: one is that most of the parts are separate parts, and the assembly of the parts is complicated and the efficiency is low; the other is that when the variable nozzle ring is installed on the turbocharger, not only the nozzle seat 8 must It is installed on the bearing body of the turbocharger through screws, and the limit pin is assembled on the bearing body of the turbocharger, which increases the processing and assembly procedures of the bearing body, and increases the number of parts at the same time

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