JP2005113702A - Mounting structure for actuator - Google Patents

Mounting structure for actuator Download PDF

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Publication number
JP2005113702A
JP2005113702A JP2003345337A JP2003345337A JP2005113702A JP 2005113702 A JP2005113702 A JP 2005113702A JP 2003345337 A JP2003345337 A JP 2003345337A JP 2003345337 A JP2003345337 A JP 2003345337A JP 2005113702 A JP2005113702 A JP 2005113702A
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Japan
Prior art keywords
bracket
actuator
blowing direction
fan
mounting structure
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JP2003345337A
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Japanese (ja)
Inventor
Hirotaka Ishihara
広隆 石原
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Hino Motors Ltd
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Hino Motors Ltd
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Priority to JP2003345337A priority Critical patent/JP2005113702A/en
Publication of JP2005113702A publication Critical patent/JP2005113702A/en
Pending legal-status Critical Current

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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting structure for an actuator capable of coping with rise in atmospheric temperature. <P>SOLUTION: A nozzle operating air cylinder 3 attached to a bracket 2 with its base end part fixed to a turbine housing 1 of a turbocharger is mounted to be positioned on the downstream side in the blowing direction of a cooling fan. An opening 4 through which air A blown out of the cooling fan flows, is bored on the bracket 2 closer to the turbine housing 1. Thereby, the air A blown out of the cooling fan is made to flow through from the opening 4 toward the bracket 2, on the downstream side in the fan blowing direction, and the temperature rise in the surrounding area of the air cylinder 3 caused by released heat of an engine is suppressed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は可変ターボチャージャに適したアクチュエータ取付構造に関するものである。   The present invention relates to an actuator mounting structure suitable for a variable turbocharger.

ターボラグの減少を図るために、タービンハウジング内に可変ノズル（可動バルブ）を設け、排気圧力が低い軽負荷時に可変ノズルの流路を狭めて、エンジン排気をタービンに有効に作用させる可変ターボチャージャがある（例えば、非特許文献１参照）。   In order to reduce the turbo lag, a variable nozzle (movable valve) is provided in the turbine housing, and the variable nozzle of the variable turbocharger that effectively acts on the turbine by narrowing the flow path of the variable nozzle at light loads with low exhaust pressure Yes (for example, see Non-Patent Document 1).

トラック用ディーゼルエンジンに組み込まれる可変ターボチャージャでは、可変ノズルのアクチュエータにエアシリンダを用いている。
このエアシリンダは、構成要素であるシール部材がエンジンの放出熱により損傷しないように断熱部で覆われている。
自動車用語中辞典〔第２版〕普及版 株式会社 山海堂 平成１５年３月１日発行 ｐ．１１４ In a variable turbocharger incorporated in a truck diesel engine, an air cylinder is used as an actuator for a variable nozzle.
The air cylinder is covered with a heat insulating portion so that the sealing member as a component is not damaged by the heat released from the engine.
Automotive Glossary of Terms [2nd edition] Popular version Sankai-do Co., Ltd. Published March 1, 2003 p. 114

しかしながら、エンジンが高出力化すると、エアシリンダ設置個所付近の雰囲気温度も上昇する。
このため、断熱材でエアシリンダを覆うだけでは、耐熱温度が２００℃程度のシリコンラバーを素材としたシール部材の損傷を防ぐことができなくなる。 However, when the output of the engine increases, the ambient temperature near the location where the air cylinder is installed also increases.
For this reason, it is impossible to prevent damage to the sealing member made of silicon rubber having a heat resistant temperature of about 200 ° C. by simply covering the air cylinder with the heat insulating material.

本発明は上述した実情に鑑みてなしたもので、エンジンの高出力化に伴う雰囲気温度の上昇に対応可能なアクチュエータ取付構造を提供することを目的としている。   The present invention has been made in view of the above-described circumstances, and an object thereof is to provide an actuator mounting structure that can cope with an increase in ambient temperature accompanying an increase in engine output.

上記目的を達成するために、請求項１に記載の発明は、タービンハウジングに締結され且つファン送風方向下流側の部位に可変ノズル作動用のアクチュエータを装着したブラケットを備え、当該ブラケットに送風方向に貫通する開口を穿設している。   In order to achieve the above object, the invention described in claim 1 is provided with a bracket fastened to the turbine housing and provided with an actuator for operating a variable nozzle at a portion downstream of the fan blowing direction, and the bracket is arranged in the blowing direction. A through opening is formed.

請求項２に記載の発明は、タービンハウジングに締結され且つファン送風方向下流側の部位に可変ノズル作動用のアクチュエータを装着したブラケットを備え、ブラケットの上方側からアクチュエータに向けてファン送風を導く案内部材を設けている。   The invention according to claim 2 is provided with a bracket fastened to the turbine housing and mounted with an actuator for operating the variable nozzle in a portion downstream of the fan blowing direction, and guides the fan blowing from the upper side of the bracket toward the actuator. A member is provided.

請求項３に記載の発明は、タービンハウジングに締結され且つファン送風方向下流側の部位に可変ノズル作動用のアクチュエータを装着したブラケットを備え、当該ブラケットに送風方向に貫通する開口を穿設し、ブラケットの上方側から前記開口に向けてファン送風を導く案内部材を設けている。   The invention according to claim 3 is provided with a bracket fastened to the turbine housing and fitted with an actuator for operating the variable nozzle at a portion downstream of the fan blowing direction, and an opening penetrating in the blowing direction is formed in the bracket. A guide member that guides fan air blowing from the upper side of the bracket toward the opening is provided.

請求項１に記載の発明においては、ファンが送り出す空気を、開口によりブラケットのファン送風方向下流側へ向けて通す。   In the first aspect of the present invention, the air sent out by the fan is passed through the opening toward the downstream side in the fan blowing direction of the bracket.

請求項２に記載の発明においては、ファンが送り出す空気を、案内部材により上方からブラケットのファン送風方向下流側へ向けて流す。   In the invention according to claim 2, the air sent out by the fan is caused to flow from the upper side toward the downstream side in the fan blowing direction of the bracket by the guide member.

請求項３に記載の発明においては、ファンが送り出す空気を、案内部材により上方から開口へ流し、ブラケットのファン送風方向下流側へ向けて通す。   In the third aspect of the invention, the air sent out by the fan is caused to flow from above to the opening by the guide member, and is passed toward the downstream side in the fan blowing direction of the bracket.

（１）請求項１に記載の発明では、ファンが送り出す空気を、開口によりブラケットのファン送風方向下流側に向けて通すので、アクチュエータ周囲の温度上昇を抑制することができる。   (1) In the invention described in claim 1, since the air sent out by the fan is passed through the opening toward the downstream side in the fan blowing direction of the bracket, the temperature rise around the actuator can be suppressed.

（２）請求項２に記載の発明では、ファンが送り出す空気を、案内部材により上方からブラケットのファン送風方向下流側へ向けて流すので、アクチュエータ周囲の温度上昇を抑制することができる。   (2) In the invention described in claim 2, since the air sent out by the fan is caused to flow from the upper side toward the downstream side in the fan blowing direction of the bracket by the guide member, the temperature rise around the actuator can be suppressed.

（３）請求項３に記載の発明では、ファンが送り出す空気を、案内部材により上方から開口へ流し、ブラケットのファン送風方向下流側へ向けて通すので、アクチュエータ周囲の温度上昇を抑制することができる。   (3) In the invention described in claim 3, since the air sent out by the fan flows from above to the opening by the guide member and passes toward the downstream side in the fan blowing direction of the bracket, the temperature rise around the actuator can be suppressed. it can.

以下、本発明の実施の形態を図面に基づき説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１及び図２は本発明のアクチュエータ取付構造の実施の形態の第１の例を示すものである。
このアクチュエータ取付構造は、可変ターボチャージャのタービンハウジング１に基端部分を締結したブラケット２を備え、該ブラケット２に可変ノズル作動用のエアシリンダ３を、冷却用ファン（図示せず）の送風方向下流側に位置するように装着している。
更に、ブラケット２のタービンハウジング１寄り部位に、冷却用ファンが送り出す空気Ａが通り抜ける開口４を穿設している。 1 and 2 show a first example of an embodiment of an actuator mounting structure according to the present invention.
This actuator mounting structure includes a bracket 2 having a base end portion fastened to a turbine housing 1 of a variable turbocharger. An air cylinder 3 for operating a variable nozzle is mounted on the bracket 2 and a blowing direction of a cooling fan (not shown). It is mounted so as to be located on the downstream side.
Further, an opening 4 through which the air A sent out by the cooling fan passes is formed in the bracket 2 near the turbine housing 1.

すなわち、冷却用ファンが送り出す空気Ａを、開口４によりブラケット２のファン送風方向下流側へ向けて通し、エンジンの放出熱に起因したエアシリンダ３周囲の温度上昇を抑制する。
よって、エンジンが高出力化しても、エアシリンダ３のシール部材の熱損傷を防止することができる。 That is, the air A sent out by the cooling fan is passed through the opening 4 toward the downstream side in the fan blowing direction of the bracket 2 to suppress the temperature rise around the air cylinder 3 due to the heat released from the engine.
Therefore, even if the engine has a high output, thermal damage to the seal member of the air cylinder 3 can be prevented.

図３及び図４は本発明のアクチュエータ取付構造の実施の形態の第２の例を示すものである。
このアクチュエータ取付構造は、可変ターボチャージャのタービンハウジング１に基端部分を締結したブラケット５を備え、該ブラケット５に可変ノズル作動用のエアシリンダ３を、冷却用ファン（図示せず）の送風方向下流側に位置するように装着している。
更に、ブラケット５に、冷却用ファンが送り出す空気Ａをエアシリンダ３に向けて導く案内部材６を取り付けている。 3 and 4 show a second example of the embodiment of the actuator mounting structure of the present invention.
This actuator mounting structure includes a bracket 5 whose base end portion is fastened to a turbine housing 1 of a variable turbocharger, and an air cylinder 3 for operating a variable nozzle is connected to the bracket 5 in a blowing direction of a cooling fan (not shown). It is mounted so as to be located on the downstream side.
Further, a guide member 6 for guiding the air A sent out by the cooling fan toward the air cylinder 3 is attached to the bracket 5.

すなわち、冷却用ファンが送り出す空気Ａを、案内部材６により上方からブラケット５のファン送風方向下流側へ向けて流し、エンジンの放出熱に起因したエアシリンダ３周囲の温度上昇を抑制する。
よって、エンジンが高出力化しても、エアシリンダ３のシール部材の熱損傷を防止することができる。 That is, the air A sent out by the cooling fan is caused to flow from the upper side toward the downstream side in the fan blowing direction of the bracket 5 by the guide member 6 to suppress the temperature rise around the air cylinder 3 due to the heat released from the engine.
Therefore, even if the engine has a high output, thermal damage to the seal member of the air cylinder 3 can be prevented.

図５及び図６は本発明のアクチュエータ取付構造の実施の形態の第３の例を示すものであり、図中、図１乃至図４と同一の符号を付した部分は同一物を表わしている。
このアクチュエータ取付構造では、エアシリンダ３を装着したブラケット２の先端部分に、冷却用ファンが送り出す空気Ａを開口４に向けて導く案内部材７を取り付けている。 FIGS. 5 and 6 show a third example of the embodiment of the actuator mounting structure of the present invention. In the drawings, the same reference numerals as those in FIGS. 1 to 4 denote the same parts. .
In this actuator mounting structure, a guide member 7 that guides the air A sent out by the cooling fan toward the opening 4 is attached to the tip portion of the bracket 2 to which the air cylinder 3 is attached.

すなわち、冷却用ファンが送り出す空気Ａを、案内部材７により上方から開口４へ流し、ブラケット２のファン送風方向下流側へ向けて通し、エアシリンダ３周囲の温度上昇を抑制する。
よって、エンジンが高出力化しても、エアシリンダ３のシール部材の熱損傷を防止することができる。 That is, the air A sent out by the cooling fan is caused to flow from above to the opening 4 by the guide member 7 and is passed toward the downstream side in the fan blowing direction of the bracket 2 to suppress the temperature rise around the air cylinder 3.
Therefore, even if the engine has a high output, thermal damage to the seal member of the air cylinder 3 can be prevented.

なお、本発明のアクチュエータ取付構造は、上述した実施の形態のみに限定されるものではなく、本発明の要旨を逸脱しない範囲において変更を加え得ることは勿論である。   It should be noted that the actuator mounting structure of the present invention is not limited to the above-described embodiment, and it is needless to say that changes can be made without departing from the gist of the present invention.

本発明のアクチュエータ取付構造は、車両用のディーゼルエンジンをはじめとして各種の内燃機関に適用できる。   The actuator mounting structure of the present invention can be applied to various internal combustion engines including a diesel engine for vehicles.

本発明のアクチュエータ取付構造の実施の形態の第１の例を示す部分側面図である。It is a partial side view which shows the 1st example of embodiment of the actuator attachment structure of this invention. 図１のＩＩ−ＩＩ矢視図である。It is an II-II arrow line view of FIG. 本発明のアクチュエータ取付構造の実施の形態の第２の例を示す部分側面図である。It is a partial side view which shows the 2nd example of embodiment of the actuator attachment structure of this invention. 図３のＩＶ−ＩＶ矢視図である。It is the IV-IV arrow line view of FIG. 本発明のアクチュエータ取付構造の実施の形態の第３の例を示す部分側面図である。It is a partial side view which shows the 3rd example of embodiment of the actuator attachment structure of this invention. 図５のＶＩ−ＶＩ矢視図である。It is VI-VI arrow line view of FIG.

符号の説明Explanation of symbols

１ タービンハウジング
２ ブラケット
３ エアシリンダ（アクチュエータ）
４ 開口
５ ブラケット
６ 案内部材
７ 案内部材
Ａ 空気（ファン送風） 1 Turbine housing 2 Bracket 3 Air cylinder (actuator)
4 Opening 5 Bracket 6 Guide member 7 Guide member A Air (fan blowing)

Claims (3)

タービンハウジングに締結され且つファン送風方向下流側の部位に可変ノズル作動用のアクチュエータを装着したブラケットを備え、当該ブラケットに送風方向に貫通する開口を穿設したことを特徴とするアクチュエータ取付構造。   An actuator mounting structure comprising a bracket fastened to a turbine housing and mounted with an actuator for operating a variable nozzle on a downstream side in a fan blowing direction, and an opening penetrating in the blowing direction is formed in the bracket. タービンハウジングに締結され且つファン送風方向下流側の部位に可変ノズル作動用のアクチュエータを装着したブラケットを備え、ブラケットの上方側からアクチュエータに向けてファン送風を導く案内部材を設けたことを特徴とするアクチュエータ取付構造。   A bracket that is fastened to the turbine housing and has a variable nozzle operating actuator mounted at a downstream side in the fan blowing direction, and a guide member that guides fan blowing from the upper side of the bracket toward the actuator is provided. Actuator mounting structure. タービンハウジングに締結され且つファン送風方向下流側の部位に可変ノズル作動用のアクチュエータを装着したブラケットを備え、当該ブラケットに送風方向に貫通する開口を穿設し、ブラケットの上方側から前記開口に向けてファン送風を導く案内部材を設けたことを特徴とするアクチュエータ取付構造。   A bracket that is fastened to the turbine housing and has an actuator for operating the variable nozzle on a downstream side in the fan blowing direction is provided. An opening that penetrates in the blowing direction is formed in the bracket, and the upper side of the bracket faces the opening. An actuator mounting structure characterized in that a guide member for guiding the fan air is provided.
JP2003345337A 2003-10-03 2003-10-03 Mounting structure for actuator Pending JP2005113702A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007309324A (en) * 2006-05-18 2007-11-29 Man Diesel Sa Guide vane device of exhaust driven supercharger in reciprocating internal combustion engine of heavy oil fuel
JP2012102642A (en) * 2010-11-09 2012-05-31 Ihi Corp Turbine with variable nozzle
CN105545463A (en) * 2016-02-19 2016-05-04 广西玉柴机器股份有限公司 Chute-type supercharger support

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007309324A (en) * 2006-05-18 2007-11-29 Man Diesel Sa Guide vane device of exhaust driven supercharger in reciprocating internal combustion engine of heavy oil fuel
KR101369579B1 (en) * 2006-05-18 2014-03-04 만 디젤 앤 터보 에스이 Guide apparatus for a exhaust turbo supercharger of a reciprocating piston engine operated with heavy oil
JP2012102642A (en) * 2010-11-09 2012-05-31 Ihi Corp Turbine with variable nozzle
CN105545463A (en) * 2016-02-19 2016-05-04 广西玉柴机器股份有限公司 Chute-type supercharger support

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