Asymmetric double-channel variable section turbocharger

A turbocharger, dual-flow technology, applied in the direction of machine/engine, internal combustion piston engine, mechanical equipment, etc., to achieve the effect of good inheritance, easy upgrade and switching, and simple structure

Inactive Publication Date: 2010-04-14
KANGYUE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The problem to be solved by the present invention is to provide an asymmetric double-channel variable-section turbocharger for the limitation of the traditional variable-section turbocharger, which can effectively solve the defects of the fixed section of the traditional supercharger and reduce the complicated Adjust structure and improve turbine efficiency

Method used

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  • Asymmetric double-channel variable section turbocharger
  • Asymmetric double-channel variable section turbocharger
  • Asymmetric double-channel variable section turbocharger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1, such as image 3 , Figure 4 As shown, a kind of asymmetrical double-channel variable cross-section turbocharger comprises a turbine volute 5, a turbine impeller 9 and a volute inlet runner are arranged in the turbine volute 5, and the turbine impeller 9 is installed on the turbine rotor shaft 13, A volute nozzle 7 is provided near the position of the turbine impeller 9 in the volute intake flow path, and the volute intake flow path includes a small volute intake flow path 16 and a large volute intake flow path 20, and a large volute intake flow path 20 It is located at one side 16 of the volute inlet small flow passage. The middle wall 18 of the volute intake air channel 16 and the large volute air intake channel 20 is provided, and the volute air intake small flow channel 16 is used in the range of the engine's full working conditions.

[0039] The middle wall 18 of the runner is provided with an air inlet that makes the volute inlet small flow passage 16...

Embodiment 2

[0045] Example 2, such as Image 6 As shown, considering the safety under the engine overspeed condition, a bypass hole 25 can be provided on the volute intake large flow channel 20 in Embodiment 1, and a bypass valve 26 is installed on the bypass hole 25, The volute inlet port bypass hole 25 is opened or closed by the bypass valve 26, thereby controlling the pressure of the airflow inside the volute inlet large flow passage 20, when the engine exhaust flow exceeds the intake small flow passage 16 and the intake large flow passage The sum of the flow capacities of the runners 20 is bypassed to bleed air, so as to prevent the supercharger from overspeeding and realize the purpose of protecting the supercharger.

[0046] In order to facilitate the installation and arrangement of the turbocharger, the positions of the large volute intake flow channel 20 and the small volute intake flow channel 16 can be exchanged. Can be attached as manual image 3 Arrangement, the volute inlet...

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Abstract

The invention discloses an asymmetric double-channel variable section turbocharger, comprising a turbine volute which is internally provided with a turbine impeller and a volute gas inlet channel; the volute gas inlet channel is provided with a volute nozzle at the position close to the turbine impeller; and the volute gas inlet channel comprises a small volute gas inlet channel and a large volute gas inlet channel which is positioned at one side of the small volute gas inlet channel. The asymmetric double-channel variable section turbocharger carries out modification and designing on the traditional turbine volute, adopts the combination of double gas inlet channels, and forms different through flow sections, and effectively utilizes the energy of waste gas of an engine. By fully utilizing the energy of waste gas exhausted by the engine, the asymmetric double-channel variable section turbocharger realizes the same variable section turbine function, can not change the whole structure greatly, and has low cost and easy realization.

Description

technical field [0001] The invention relates to an exhaust gas turbocharger used in a supercharged engine, in particular to an asymmetrical double-channel variable cross-section turbocharger which can effectively take into account the high and low speed supercharging requirements of the engine and has different flow cross-sectional areas. , belonging to the field of internal combustion engines. Background technique [0002] With the continuous development of national emission regulations and user needs, the supercharging technology of engines, especially diesel engines, has also made great progress. The structure of the exhaust gas turbocharger has developed from the traditional fixed section to the exhaust gas bypass that can take into account the low-speed torque of the engine. Structural turbocharger, after the implementation of the National III emission regulations, people have more and more demand for an engine turbocharger that can take into account the high and low sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B37/24
CPCY02T10/144Y02T10/12
Inventor 朱智富李永泰王航李延昭郭锡禄杨恒星郭伦海
Owner KANGYUE TECH
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