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Nozzle vane opening limit stop structure for turbocharger

A technology for turbochargers and nozzle blades, applied in the direction of machines/engines, engine components, engine functions, etc., to achieve the effect of light bearing housings, simple shapes, and easy manufacturing

Active Publication Date: 2016-05-18
MITSUBISHI HEAVY IND ENGINE & TURBOCHARGER LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, the opening degree of the fully closed side of the nozzle vane is restricted

Method used

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  • Nozzle vane opening limit stop structure for turbocharger
  • Nozzle vane opening limit stop structure for turbocharger
  • Nozzle vane opening limit stop structure for turbocharger

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0049] Such as figure 1 As shown, the turbocharger 10 includes a turbine housing 12, a bearing housing 13, a compressor housing (not shown) and a variable nozzle mechanism 15, the turbine housing 12 rotatably accommodates the turbine working wheel, and the bearing housing 13 is installed on the turbine The casing 12 rotatably supports the rotating shaft of the turbine impeller, and the compressor casing is mounted on the opposite side of the bearing housing 13 from the turbine casing 12 (the front side of the page), and the variable nozzle mechanism 15 can utilize a plurality of nozzles. The vanes adjust the velocity of the exhaust gas flowing into the turbine wheel.

[0050] The external actuator side assembly 16 of the above-mentioned variable nozzle mechanism 15 is composed of a support shaft 21, an outer rod 22, a length-adjustable connection mechanism 24, and an actuator 27. The support shaft 21 is connected to the nozzle vane side. And rotatably supported on the bearin...

no. 2 approach

[0086] Regarding the second embodiment, the same reference numerals are attached to the same structures as those of the first embodiment, and detailed description thereof will be omitted.

[0087] Such as Figure 6 As shown, the connecting mechanism 70 connecting the connecting pin 23 and the actuator link 26 is rotatably arranged in a window portion 35 a formed in the main body 71 by a main body 71 whose one end is connected to the outer rod 22 via the connecting pin 23 . The adjustment nut 36, the lock nut 37 that fixes the main body 71 to the actuator link 26, the stopper bolt 73 that is screwed to the main body 71 in a manner parallel to the actuator link 26, and the stopper The bolt 73 is configured by a lock nut 74 fixed to the main body 71 .

[0088] The stopper bolt 73 and the lock nut 74 constitute a movable side stopper 77 which is a part of a stopper member 75 that restricts opening and closing of a plurality of nozzle vanes on the fully closed side. degree and ad...

no. 3 approach

[0095] Regarding the third embodiment, the same reference numerals are assigned to the same configurations as those of the first embodiment and the second embodiment, and detailed description thereof will be omitted.

[0096] Such as Figure 7 As shown, the connecting mechanism 80 connecting the connecting pin 23 and the actuator link 26 is rotatably arranged in a window portion 35 a formed in the main body 81 by a main body 81 whose one end is connected to the outer rod 22 via the connecting pin 23 . The adjustment nut 36 and the lock nut 37 which fixes the main body 81 to the actuator link 26 are comprised.

[0097] The main body 81 is composed of a thin plate portion 81c connected to the connecting pin 23, an abutment plate 82 provided on a side protruding portion 81d formed on the plate portion 81c, and a cylindrical drum formed integrally from the plate portion 81c. Out of the cylindrical portion 35e constitute.

[0098] The side protruding portion 81d is a movable side...

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PUM

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Abstract

The stop member (30) is connected by a nut seat (44a) provided on the heat shield (44) mounted on the actuator bracket (43) and an actuator that moves relative to the heat shield (44). The movable side stopper (33) is formed on the rod (26), and the actuator (27) is composed of the actuator body (41) that generates its driving force and the driving force that transmits the actuator body (41). The actuator link (26) is formed, and the movable side stopper (33) is provided on the actuator link (26) extending from the actuator body (41) to the nozzle vane side.

Description

technical field [0001] The present invention relates to a vane opening restriction stopper structure for a turbocharger that restricts the opening degree of a nozzle vane on a fully-opening side or a fully-closing side and can adjust the opening degree of the fully-opening side or a fully-closing side. Background technique [0002] In a turbocharger used in a vehicle engine, etc., the exhaust gas of the engine is filled into a volute formed in the turbine casing, and the exhaust gas is passed through a plurality of nozzle vanes provided on the inner peripheral side of the volute. A structure acting on the turbine impeller provided on the inner peripheral side of these nozzle vanes. [0003] A plurality of nozzle vanes are included in a variable nozzle mechanism, and the variable nozzle mechanism is provided in an exhaust gas passage formed between two annular plates so that the opening degree (vane angle) can be changed by an actuator. [0004] When the variable nozzle mech...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B37/24F01D17/16
CPCF02B37/24F01D17/165F05D2220/40F05D2260/30F05D2260/50F05D2240/91Y02T10/12F01D17/16
Inventor 田代直人阵内靖明有水大之
Owner MITSUBISHI HEAVY IND ENGINE & TURBOCHARGER LTD
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