Turbine

Abstract

A turbine, including: a volute and an impeller. The volute includes: a volute gas inlet, a volute gas feeding flow passage, and a volute gas outlet. The impeller includes: blades, an impeller gas feeding flow passage, an impeller gas inlet, an impeller gas outlet, and a partition plate. The impeller gas feeding flow passage includes: an inner flow passage and an outer flow passage. The impeller is disposed inside the volute. The blades are disposed on an outer part of the impeller. The partition plate is circumferentially disposed between the impeller gas inlet and the impeller gas outlet. The partition plate divides the impeller gas feeding flow passage into the inner flow passage and the outer flow passage.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation-in-part of International Patent Application No. PCT / CN2012 / 000714 with an international filing date of May 22, 2012, designating the United States, now pending, and further claims priority benefits to Chinese Patent Application No. 201210137082.5 filed May 7, 2012. The contents of all of the aforementioned applications, including any intervening amendments thereto, are incorporated herein by reference. Inquiries from the public to applicants or assignees concerning this document or the related applications should be directed to: Matthias Scholl P.C., Attn.: Dr. Matthias Scholl Esq., 245 First Street, 18th Floor, Cambridge, Mass. 02142.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The invention relates to the field of turbocharging of an internal combustion engine, and more particularly to a turbine.[0004]2. Description of the Related Art[0005]A typical double-layer flow passage cross-se...

AI Technical Summary

Benefits of technology

The invention is a double-area turbine for turbocharging that reduces sudden expansion and mixing phenomena of the gas at the gas outlet of the single flow passage of the volute in small flow rate conditions, improving efficiency and torque output. The turbine has a simple structure and can be produced with low production cost. It effectively satisfies the turbocharging requirement in a full range of working conditions of the motor.

Problems solved by technology

However, in practical applications, when the motor operates at low speeds, the efficiency of the turbine is relatively low because only a single flow passage of the volute is utilized and the exhaust gas discharged from the motor enters the volute gas inlet and passes through the single flow passage to reach the gas outlet of the single flow passage where sudden expansion of the gas easily occurs, so that the gas entering the impeller gas feeding flow passage from the impeller gas inlet is reduced.

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