Electrically controlled variable geometrical turbocharger

Abstract

The invention discloses an electrically controlled variable geometrical turbocharger which comprises a turbine shell, a middle body and a compressor shell which are connected together; the middle body is internally and rotatably provided with a turbine shaft; one end of the turbine shaft is fixedly provided with a turbine; the turbine is arranged in the turbine shell; the other end of the turbine shaft is fixedly provided with a compressor impeller; the compressor impeller is arranged in the compressor shell; the turbine shell is internally fixedly provided with a turbine sleeve; an air inlet cavity for facilitating rotation of the turbine is formed between the turbine shell and the turbine sleeve; a plurality of nozzle ring blades are fixedly arranged between the air inlet cavity and the turbine; a regulating device for regulating the angles of the nozzle ring blades is arranged between the middle body and the turbine sleeve; the regulating device comprises an installing disk and a driving disk; the nozzle ring blades are installed on the installing disk; the driving disk is connected with an electrically controlled actuator for driving the driving disk through a linkage mechanism; and the turbine sleeve is fixedly provided with a rib for guiding the direction of an air flow. The electrically controlled variable geometrical turbocharger has the advantages of wide flow range, precise flow control, good low-speed response, non-excessive pressurization and the like.

Description

technical field [0001] The invention relates to the field of engine components, in particular to an electronically controlled variable geometry turbocharger. Background technique [0002] Turbocharging technology is a key technology to achieve energy saving and emission reduction of internal combustion engines and to meet increasingly stringent emission regulations. At present, turbocharging technology is leaping from traditional wastegate turbocharging technology to variable geometry turbocharging technology. Supercharging technology uses the waste heat and pressure energy in the exhaust of the internal combustion engine to drive the compressor to increase the intake air density of the engine, thereby greatly increasing the power density of the engine, reducing fuel consumption, and significantly reducing pollutant emissions. Wastegate turbocharging The low-speed performance and transient performance of the engine have been improved, but when the engine is under high operat...

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is to provide an electronically controlled variable geometry turbocharger, which solves the problems of narrow flow range, poor response at low speed, and prone to failure at high speed

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