Mixed-flow turbosupercharger for integration vehicle

Abstract

The invention provides a mixed-flow turbosupercharger for an integration vehicle. The mixed-flow turbosupercharger comprises a rotating structure, a bearing structure, a bearing pedestal and a shell mechanism; the rotating structure comprises a rotating shaft, a turbine and an impeller, the turbine and the impeller are arranged at the two ends of the rotating shaft, the bearing structure comprises a floating bearing and a thrust bearing which are annularly arranged on the middle portion of the rotating shaft, the outer side of the bearing structure is sleeved with the bearing pedestal, and the shell mechanism comprises an integration type turbine shell arranged on the outer side of the turbine and the outer side of the bearing pedestal in a sleeving manner, an impeller shell arranged on the outer side of the impeller in a sleeving manner and a back plate connecting the integration type turbine shell with the impeller shell; a turbine flow way and a cooling water way are arranged in the integration turbine shell, and the outer side of the turbine flow way is wrapped with the cooling water way; and a traditional turbine shell and a traditional bearing shell are integrated into the integration turbine shell, distribution of the cooling water way is designed, and the mixed-flow turbosupercharger has the outstanding beneficial effects and the obvious progress.

Description

technical field [0001] The invention relates to the field of vehicle machinery, in particular to a supercharger, in particular to an integrated vehicle mixed-flow turbocharger. Background technique [0002] During the development of the internal combustion engine, the application of turbocharging technology has played an important role in improving the specific power of the internal combustion engine and reducing the emission of the internal combustion engine. Judging from the current development of turbocharging technology, the radial flow turbocharger has reached a very high technical level. The specific speed of the type turbine is getting higher and higher, but its efficiency cannot reach the optimum value. If the specific speed is reduced, although this problem can be solved, it will increase the diameter of the impeller, thus affecting the performance of the supercharger. Transient responsiveness. In comparison, the mixed-flow turbocharger can not only improve the de...

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Problems solved by technology

[0006] Based on the above-mentioned background, in order to overcome the various drawbacks existing in the actual application process of the prior art, especially to overcome the defects such as poor cooling effect and high material cost (other defects are related to its technical solutions in other application documents of the applicant) specific elaboration), the present invention provides an integrated mixed-flow turbocharger for vehicles, by integrating the traditional turbine shell and bearing shell into an integrated turbine shell, omitting the connection between the traditional bearing shell and the turbine shell, The risk of air leakage and deformation is greatly reduced; furthermore, the improved integrated turbine casing effectively solves the problems of limited design of various components caused by structural limitations, and the cooling water channel can be cooled according to the best The effect is designed to avoid the occurrence of high temperature failure (cracking and damage of parts, coking of lubricating oil, etc.); more importantly, the new design method of the cooling water channel makes the material no longer limited to high-nickel cast stainless steel and other expensive materials. Aluminum and / or aluminum alloys and / or cast iron, etc. can also be used at a lower price

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