Automotive turbocharger

Abstract

The invention belongs to the technical field of turbochargers, and particularly relates to an automotive turbocharger. The automotive turbocharger comprises a turbine housing and an external iron pipe, the external iron pipe is located at a waste gas inlet in the turbine housing, an expansion pipe is arranged in an inner cavity of the external iron pipe, a first windshield is arranged on the wallof an inner cavity of the expansion pipe, a heat absorbing cover located on the outer cover surface of a turbine blade is fixedly installed on an inner cavity of the turbine housing, a heat conductingwire is arranged in the middle of the side, deviating from the turbine blade, of the heat absorbing cover, retroreflectors are arranged on the walls of the inner cavity of the turbine housing, and the retroreflectors both shine on the heat conducting wire. According to the automotive turbocharger, through a flow guiding cavity formed by a flow guiding assembly composed of the external iron pipe and the expansion pipe, when the waste gas enters the inner cavity of the turbine housing through the flow guiding cavity, the size of the flow guiding cavity can be adjusted correspondingly by the flow guiding cavity inside the flow guiding assembly according to the waste gas, airflow flow rate and airflow heat generated by working of an engine, relative stability of the rotating speed of a turbine is ensured, and thus the working effect of the turbocharger is improved.

Description

technical field [0001] The invention belongs to the technical field of turbochargers, in particular to a turbocharger for vehicles. Background technique [0002] The turbocharger is actually an air compressor, which uses the inertia and air pressure of the exhaust gas exhausted by the engine to push the turbine, so that the turbine drives the coaxial impeller to press the air, so that the supercharged air enters the cylinder, and in the During the working process of the turbocharger, there is a direct relationship between the discharge speed of exhaust gas, the speed of the turbine and the amount of air compression. [0003] A Chinese patent with an existing application number of 201610162572.9 discloses a turbocharger with variable cross-section, including a turbine casing and turbine blades, and an annular flow channel is arranged in the turbine casing, and the annular flow channel is provided with exhaust gas Inlet and exhaust gas outlet, the turbine blades are rotatably...

AI Technical Summary

Problems solved by technology

However, the turbocharger with variable cross-section cannot adjust the volume of the flow chamber in time according to the flow rate of the exhaust gas during operation, resulting in that the engine speed does not correspond to the gas flow rate, and the turbine speed is not enough to achieve the supercharging effect. , in the exhaust gas export process, the heat contained in the exhaust gas cannot be fully and synchronously exported, and the turbine works in a high temperature environment, which greatly reduces the working effect and working life of the turbine while increasing the wear of the turbine components

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