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Supercharger

A supercharger and turbine casing technology, applied in the field of superchargers, can solve the problem that the valve cannot be completely closed

Active Publication Date: 2015-01-28
IHI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if the abutting surface of the valve body obliquely abuts against the valve seat surface due to dimensional errors, etc., the valve cannot be completely closed.

Method used

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Embodiment Construction

[0022] Embodiments of the present invention will be described in detail below with reference to the drawings. Dimensions, materials, other specific numerical values, and the like shown in this embodiment are merely illustrations for easy understanding of the invention, and in particular, do not limit the present invention unless otherwise specified. In this specification and the drawings, elements that actually have the same functions and structures are denoted by the same reference numerals to omit repeated description, and illustrations of elements not directly related to the present invention are omitted.

[0023] figure 1 is a schematic sectional view of the supercharger C. Below, will figure 1 The arrow F direction shown will be described as the front side of the supercharger C, and the arrow R direction will be described as the rear side of the supercharger C. FIG. like figure 1 As shown, the supercharger C is configured by including a supercharger main body 1 . Thi...

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Abstract

A supercharger (C) equipped with an open / close mechanism (20) that opens / closes a circulation hole (4a) through which exhaust gas flows into or flows out from a turbine housing (4). The open / close mechanism (20) is equipped with a valve (21), and an attachment plate (23), one end of which is affixed to the valve (21), and in the other end of which are formed an insertion hole (23c), into which a stem (22) rotatably supported by the turbine housing (4) is inserted, and an exposure hole (23d), which communicates with the insertion hole (23c) and exposes a portion of the outer circumferential surface of the stem (22). The diameter of the insertion hole (23c) decreases in the direction in which the stem (22) is inserted, and the stem (22) has a tapered part (22a) the diameter of which decreases toward the tip end in the direction of insertion into the insertion hole (23c).

Description

technical field [0001] The present invention relates to a supercharger provided with a valve for opening and closing a flow hole of exhaust gas to a turbine casing. Background technique [0002] Conventionally, there is known a turbocharger in which a turbine shaft having a turbine wheel at one end and a compressor wheel at the other end is rotatably held by a bearing housing. The supercharger is connected with the engine. The turbine wheel is rotated by exhaust gas discharged from the engine. The rotation of the turbine wheel is transmitted to the compressor wheel via the turbine shaft, so that the compressor wheel rotates. In this way, the supercharger compresses the air accompanying the rotation of the compressor wheel to supercharge the engine. [0003] The supercharger described in Patent Document 1 includes a wastegate valve. The wastegate valve bypasses a part of the exhaust gas introduced into the turbine housing to the downstream of the turbine wheel without pas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B37/18
CPCY02T10/144F02B37/186F02B37/183Y02T10/12F01D17/105F01D25/04F05D2220/40
Inventor 村山友一
Owner IHI CORP
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