Section-variable turbine

A turbine and cross-section technology, which is applied to gas turbine devices, mechanical equipment, engine components, etc., can solve the problems of limited gas flow adjustment range and low efficiency of tongue-shaped baffle superchargers, and achieves a simple control mechanism for air intake cross-section adjustment and control. The effect of easy control and broad market promotion value

Inactive Publication Date: 2011-06-01
KANGYUE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The problem to be solved by the present invention is to provide a variable cross-section turbine with simple and flexible control, low flow loss and high efficiency, which can effectively expand the matching range between the turbocharger and the engine, and can solve the problem of tongue-shaped baffle turbocharger efficiency. Low, limited range of gas flow adjustment to meet the boosting requirements of the engine's full range of operating conditions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Embodiment 1, as attached figure 2 As shown, a variable cross-section turbine includes a volute 1, and the volute 1 is provided with an annular air passage 3, the annular air passage 3 has an air inlet 2, and the annular air passage 3 is provided with an intake section adjustment mechanism 17, The air intake section adjustment mechanism 17 is in driving connection with the actuator 15 .

[0048] Such as image 3As shown, the air intake section adjustment mechanism 17 includes a fixed baffle 11 installed in the annular air passage 3 near the air inlet 2 , and the fixed baffle 11 is integrally cast with the volute 1 .

[0049] The fixed baffle 11, the movable straight plate 9 and the movable tongue-shaped baffle 13 are arranged along the axial direction of the annular flow channel 3, and are composed of a movable straight plate, a fixed baffle and a movable tongue-shaped baffle in order to reduce flow loss The shape line is similar to the shape line of the inner wall o...

Embodiment 2

[0059] Example 2, such as Figure 6 As shown, on the basis of Embodiment 1, in order to further expand the adjustment range of the intake air flow, the other end of the movable tongue-shaped baffle 13 is sequentially connected with a first movable tongue-shaped baffle 18 and a second movable tongue-shaped baffle. Movable tongue-shaped baffle 19, the end of the second movable tongue-shaped baffle 19 is located near the other end of the annular flow passage 3 relative to the air inlet 2, the first movable tongue-shaped baffle 18 and the second movable tongue-shaped baffle 19 are arranged along the axial direction of the annular flow channel 3 .

[0060] The first movable tongue-shaped baffle 18 and the second movable tongue-shaped baffle 19 are respectively installed on the volute 1 and are connected to the actuator 15 through transmission, so that the flow area can be adjusted in the flow area of ​​the entire flow channel , to more effectively meet the supercharging requiremen...

Embodiment 3

[0062] Embodiment 3, after the air flow enters the volute, the flow inertia is used to perform work on the turbine, and the work performed by the air flow in the initial stage plays a very important role in the entire work process of the turbine. In order to make full use of the energy of the airflow in the initial stage of work, such as Figure 7 As shown, on the basis of Embodiment 1, the fixed baffle 11 is extended to a position in the annular air flow channel 3 close to the cross section of the air inlet 2 at an angle of 90°, and the installation position of the movable tongue-shaped baffle 13 is also It also moves backwards, and the installation method remains unchanged, which can prevent the airflow from expanding prematurely in the volute 1, so that the energy of the airflow can be more fully utilized. Especially when the engine is at a low speed, the supercharging pressure can be increased more effectively to meet the low-speed supercharging requirements of the engine....

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Abstract

The invention discloses a section-variable turbine. The turbine comprises a volute, wherein the volute is provided with an executing mechanism; an annular air flow channel is formed in the volute and is provided with an air inlet; and an air inlet section adjusting mechanism is arranged in the annular air flow channel and is in transmission connection with the executing mechanism. The volute from the inlet to a flow channel area with a 90-degree section is divided into two parts with different upper and lower circulating capabilities, and a gas guide device capable of freely adjusting is used for adjusting and controlling two different flow channels to sequentially work, so that the circulating area of the flow channels is controlled, the fuel gas state of the turbine is entered through adjustment, and the supercharging requirement of an engine in a full working condition range is met; and the executing mechanism can adjust the rotation angle of a movable straight plate and a movable tongue-shaped baffle plate according to the actual working condition of the engine to change the throat section and an air inlet flow channel, so that a turbosupercharger and the engine are well matched under the full working condition.

Description

technical field [0001] The invention relates to a variable cross-section turbocharger, in particular to a variable cross-section turbomachine which changes the inlet flow passage while changing the throat cross-section, and belongs to the field of internal combustion engines. Background technique [0002] Turbochargers are widely used in vehicle engines, which can significantly improve engine performance. With the increasingly stringent requirements of engine emission regulations, higher requirements are placed on the performance of automotive turbochargers. When the turbocharger is matched with the engine, there are generally problems such as insufficient low-speed torque of the engine, poor emission performance and excessive supercharging at high speed. In order to meet the performance requirements of the engine in the full range of operating conditions, the variable geometry turbocharging technology has been extensively researched and applied. Among them, the tongue-sha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D17/14F02B37/22F02C6/12
CPCF01D17/143F01D17/18Y02T10/144F05D2220/40F02B37/22Y02T10/12
Inventor 王航纪旭娜刘云岗李永泰朱智富宋丽华
Owner KANGYUE TECH
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