Dual-zone turbine for turbocharging

A turbocharged, dual-zone technology, applied in stators, engine components, machines/engines, etc., can solve the problems of turbine efficiency reduction, sudden gas expansion, etc., and achieve good inheritance, high casting yield, and high structural strength Effect

Inactive Publication Date: 2012-09-12
KANGYUE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, it is found that this double-channel variable cross-section turbocharger works in a single channel of the turbine volute under low-speed engine conditions, and the exhaust gas discharged from the engine enters the single channel of the volute from the inlet of the volute to reach Sudden expansion of gas is prone to occur at the outlet of the single channel of the volute, and the gas entering the inlet channel of the turbine wheel from the inlet of the turbine wheel decreases, which reduces the efficiency of the turbine at small flow rates
Under the medium and high-speed working conditions of the engine, the two passages of the turbine volute work together, and the exhaust gas discharged from the engine enters the two passages of the volute from the inlet of the volute and reaches the inlet of the turbine impeller. Mixing, so that part of the kinetic energy of the gas entering the turbine impeller intake channel is converted into potential energy, reducing the efficiency of the turbine

Method used

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  • Dual-zone turbine for turbocharging
  • Dual-zone turbine for turbocharging
  • Dual-zone turbine for turbocharging

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Example 1, such as figure 2 , image 3 As shown, a dual-zone turbine for turbocharging includes a turbine volute 1, a turbine impeller 2 is installed in the turbine volute 1, and turbine blades are arranged on the outside of the turbine volute 2, and the turbine volute is provided with There are volute air inlet 3, volute air inlet flow channel and volute air outlet 4.

[0044] The turbine wheel 2 is provided with a turbine wheel air inlet, a turbine wheel air intake channel, a turbine wheel air outlet and a turbine wheel blade.

[0045] Between the turbine wheel inlet and the turbine wheel air outlet of the turbine wheel 2, there is a circumferentially arranged partition plate 11, the shape of the partition plate 11 meets the requirements of aerodynamic performance and reliability.

[0046] The partition plate 11 divides the turbine wheel air intake channel into a turbine wheel air intake inner channel 12 and a turbine wheel air intake outer channel 13 .

[0047] T...

Embodiment 2

[0058] Example 2, such as Figure 6 As shown, on the basis of Embodiment 1, the adjustable valve 20 near the volute inlet 3 in the left flow passage 6 of the volute air intake is removed, and the right flow passage 7 of the volute air intake is close to the volute An adjustable valve 20 is provided at the air inlet 3 of the shell, and the adjustable valve 20 is connected with the control mechanism, and the rotation of the adjustable valve 20 is realized under the drive of the control mechanism, thereby opening the flow channel 7 on the right side of the volute air intake and off.

[0059] When the engine is in the range of low-speed operating conditions, the amount of exhaust gas discharged by the engine is small, and the adjustable valve 20 is in a closed state driven by the control mechanism, so the right side flow channel 7 of the volute intake and the intake air of the outer flow channel of the turbine impeller intake Port 19, turbine impeller air inlet outer flow channel...

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Abstract

The invention discloses a dual-zone turbine for turbocharging. The dual-zone turbine comprises a turbine volute, wherein a turbine impeller is arranged in the turbine volute; a turbine blade is arranged outside the turbine impeller; a turbine air inlet, a volute air inlet runner and a volute air outlet are arranged on the turbine volute; a turbine impeller air inlet, a turbine impeller air inlet runner, a turbine impeller air outlet and a turbine impeller blade are arranged on the turbine impeller; separation boards which are arranged according to the circumferential direction are arranged between the turbine impeller air inlet and the turbine impeller air outlet of the turbine impeller; and the turbine impeller air inlet runner is divided into an inner turbine impeller air inlet runner and an outer turbine impeller air inlet runner by the separation boards. According to the dual-zone turbine disclosed by the invention, the supercharging requirement of an engine within the all-condition range can be effectively met; the phenomenon that gas suddenly expands at a single runner air outlet of the volute at low flow can be reduced; and the efficiency of the turbine at low flow can be further increased.

Description

technical field [0001] The invention relates to a novel turbine device, in particular to a dual-zone turbine for turbocharging, which can effectively meet the requirements of low-speed and high-speed supercharging of the engine, and belongs to the field of internal combustion engine supercharging. Background technique [0002] With the gradual improvement of emission standards, turbochargers are widely used in modern engines. In order to meet the performance and emission requirements under all engine operating conditions, especially low-speed operating conditions, the turbocharger must provide higher boost pressure, and has an adjustable function of engine intake pressure and exhaust pressure, and variable section Turbochargers have become the focus of research and development in the field of supercharging. At present, the turbocharger adopts the structure of the double-layer channel variable cross-section turbine volute to meet the requirements of the variable cros...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D25/24F02B37/12
CPCF01D9/026F05D2220/40F02B37/025F02B37/22Y02T10/12F01D9/048F01D25/24
Inventor 王航李永泰李延昭朱智富袁道军王艳霞刘迎鑫
Owner KANGYUE TECH
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