JP2013249831A - Exhaust duct - Google Patents

Exhaust duct Download PDF

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Publication number
JP2013249831A
JP2013249831A JP2013098341A JP2013098341A JP2013249831A JP 2013249831 A JP2013249831 A JP 2013249831A JP 2013098341 A JP2013098341 A JP 2013098341A JP 2013098341 A JP2013098341 A JP 2013098341A JP 2013249831 A JP2013249831 A JP 2013249831A
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JP
Japan
Prior art keywords
exhaust duct
metal wall
continuous glass
outer metal
glass fibers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2013098341A
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Japanese (ja)
Inventor
Thomas Eger
トーマス・エーガー
Christian Argus
クリスティアン・アーガス
Hans-Peter Graf
ハンス−ペーター・グラーフ
Helmut Christl
ヘルムート・クリストル
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MAN Energy Solutions SE
Original Assignee
MAN Diesel and Turbo SE
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Publication date
Application filed by MAN Diesel and Turbo SE filed Critical MAN Diesel and Turbo SE
Publication of JP2013249831A publication Critical patent/JP2013249831A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • F16L59/16—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like
    • F16L59/163—Branch units ; Insulation forming a whole with branches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
    • F01N13/102—Other arrangements or adaptations of exhaust conduits of exhaust manifolds having thermal insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
    • F01N13/141—Double-walled exhaust pipes or housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/16—Selection of particular materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1861—Construction facilitating manufacture, assembly, or disassembly the assembly using parts formed by casting or moulding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/04—Arrangements using dry fillers, e.g. using slag wool which is added to the object to be insulated by pouring, spreading, spraying or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/10—Bandages or covers for the protection of the insulation, e.g. against the influence of the environment or against mechanical damage
    • F16L59/103—Rigid covers for tee pieces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • F16L59/147—Arrangements for the insulation of pipes or pipe systems the insulation being located inwardly of the outer surface of the pipe
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2310/00—Selection of sound absorbing or insulating material
    • F01N2310/02—Mineral wool, e.g. glass wool, rock wool, asbestos or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2310/00—Selection of sound absorbing or insulating material
    • F01N2310/04—Metallic wool, e.g. steel wool, copper wool or the like

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Exhaust Silencers (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a new exhaust duct and a method of manufacturing the exhaust duct.SOLUTION: An exhaust duct (10) for a combustion engine includes inside and outside metallic walls (11) and (12). A heat insulation part (13) made of fibers is positioned between the inside and outside metallic walls (11) and (12). The inside and outside metallic walls (11) and (12) are made of an integral cast component (14), and the heat insulation part (13) is made of continuous glass fibers (15).

Description

本発明は、請求項１の上位概念に基づく排気ダクトに関する。さらに本発明は、燃焼機関用の排気ダクトの製造方法に関する。   The invention relates to an exhaust duct based on the superordinate concept of claim 1. The invention further relates to a method for producing an exhaust duct for a combustion engine.

特許文献１から燃焼機関用の排気ダクトが知られており、この排気ダクトは内側の金属管および外側の金属管を含んでおり、この内側の金属管と外側の金属管の間には断熱部が位置決めされている。特許文献１に基づく排気ダクトの、金属管の間に位置決めされた断熱部は、繊維から、より詳しくは不規則な金属繊維から成っている。   Patent Document 1 discloses an exhaust duct for a combustion engine, which includes an inner metal tube and an outer metal tube, and a heat insulating portion is provided between the inner metal tube and the outer metal tube. Is positioned. The heat insulation part positioned between the metal pipes of the exhaust duct based on Patent Document 1 is made of fibers, more specifically, irregular metal fibers.

独国特許出願公開第10 2009 052 834号明細書(DE 10 2009 052 834 A1)German Patent Application Publication No. 10 2009 052 834 (DE 10 2009 052 834 A1)

これに基づき本発明の課題は、新規の排気ダクトおよびその排気ダクトの製造方法を提供することである。   Based on this, an object of the present invention is to provide a novel exhaust duct and a method for manufacturing the exhaust duct.

この課題は、請求項１に基づく排気ダクトによって解決される。本発明に従い、内側の金属壁および外側の金属壁は一体的な鋳造部品によってもたらされており、断熱部は連続ガラス繊維によってもたらされている。   This problem is solved by an exhaust duct according to claim 1. In accordance with the invention, the inner and outer metal walls are provided by an integral cast part and the insulation is provided by continuous glass fibers.

本発明による排気ダクトでは、内側の金属壁および外側の金属壁が一体的な鋳造部品によってもたらされている。この鋳造部品の内側の金属壁と外側の金属壁の間には断熱部が位置決めされており、この断熱部は連続ガラス繊維によってもたらされている。このような排気ダクトは特に有利に製造することができる。   In the exhaust duct according to the invention, the inner metal wall and the outer metal wall are provided by integral casting parts. A heat insulating part is positioned between the inner metal wall and the outer metal wall of the cast part, and the heat insulating part is provided by continuous glass fibers. Such an exhaust duct can be produced particularly advantageously.

有利な一変形形態によれば、連続ガラス繊維は、内側の金属壁と外側の金属壁の間の少なくとも1つの中空空間に収められており、好ましくは吹き込まれている。内側の金属壁と外側の金属壁の間の1つまたはそれぞれの中空空間への連続ガラス繊維の吹込みは、製造技術的に特に有利である。   According to an advantageous variant, the continuous glass fibers are contained in at least one hollow space between the inner metal wall and the outer metal wall, preferably blown. The blowing of continuous glass fibers into one or each hollow space between the inner metal wall and the outer metal wall is particularly advantageous in terms of manufacturing technology.

燃焼機関用の排気ダクトを製造するための本発明による方法は請求項6で規定されている。   The method according to the invention for producing an exhaust duct for a combustion engine is defined in claim 6.

本発明の好ましい変形形態は、従属請求項および以下の説明から明らかである。本発明の例示的実施形態を図面に基づいて詳しく説明するが、これに制限されるわけではない。   Preferred variants of the invention are evident from the dependent claims and the following description. Exemplary embodiments of the present invention will be described in detail with reference to the drawings, but are not limited thereto.

本発明に基づく排気ダクトの断面図である。It is sectional drawing of the exhaust duct based on this invention.

図1は、燃焼機関用の排気ダクト10の好ましい例示的実施形態を示しており、排気ダクト10は、内側の金属壁11および外側の金属壁12を含んでいる。   FIG. 1 shows a preferred exemplary embodiment of an exhaust duct 10 for a combustion engine, the exhaust duct 10 including an inner metal wall 11 and an outer metal wall 12.

内側の金属壁11は排気用の流路を画定している。外側の金属壁12は、排気ダクト10を外に向かって周囲に対して画定している。   The inner metal wall 11 defines an exhaust passage. The outer metal wall 12 defines the exhaust duct 10 outward with respect to the surroundings.

本発明による排気ダクト10では、内側の金属壁11および外側の金属壁12が、鋳造プロセスにより製造される一体的な鋳造部品14によってもたらされている。   In the exhaust duct 10 according to the invention, the inner metal wall 11 and the outer metal wall 12 are provided by an integral cast part 14 produced by a casting process.

内側の金属壁11と外側の金属壁12との間には、繊維から成る断熱部13が位置決めされており、この断熱部13は連続ガラス繊維15によってもたらされている。   Between the inner metal wall 11 and the outer metal wall 12, a heat insulating part 13 made of fibers is positioned, and this heat insulating part 13 is provided by continuous glass fibers 15.

連続ガラス繊維15は、内側の金属壁11と外側の金属壁12との間に形成された少なくとも1つの中空空間に、特に吹込みによって収められている。内側の壁11と外側の壁12との間の1つまたはそれぞれの中空空間への連続ガラス繊維15の吹込みは特に有利であり、さらに、連続ガラス繊維15は任意の密度で、1つまたはそれぞれの中空空間に収めることができる。   The continuous glass fiber 15 is stored in at least one hollow space formed between the inner metal wall 11 and the outer metal wall 12 by blowing. The blowing of continuous glass fibers 15 into one or each hollow space between the inner wall 11 and the outer wall 12 is particularly advantageous, furthermore, the continuous glass fibers 15 can be of one density or It can be accommodated in each hollow space.

図1に示した排気ダクト10は、排気用の1つの引込部16および排気用の2つの排出部17，18を備えた実質的にＴ字状の輪郭を有している。これとは違い、図1の排気ダクト10が排気用の2つの引込部および排気用の1つの排出部を備えることも可能であり、この場合、引込部が要素17および18であり、排出部が要素16である。   The exhaust duct 10 shown in FIG. 1 has a substantially T-shaped profile with one intake section 16 for exhaust and two exhaust sections 17 and 18 for exhaust. In contrast to this, the exhaust duct 10 of FIG. 1 can also have two inlets for exhaust and one outlet for exhaust, in which case the inlets are elements 17 and 18 and the outlets Is element 16.

さらに本発明は、このような排気ダクト10の製造方法に関する。最初に、内側の金属壁11および外側の金属壁12を含む鋳造部品14を準備する。続いて連続ガラス繊維15を断熱部13として、鋳造部品14の内側の壁11と外側の壁12の間に収め、特に、内側の金属壁11と外側の金属壁12の間に形成された1つまたはそれぞれの中空空間に連続ガラス繊維15を吹き込むことによって収める。   Furthermore, the present invention relates to a method for manufacturing such an exhaust duct 10. First, a cast part 14 including an inner metal wall 11 and an outer metal wall 12 is prepared. Subsequently, the continuous glass fiber 15 is used as a heat insulating part 13 and is placed between the inner wall 11 and the outer wall 12 of the cast part 14, and in particular, formed between the inner metal wall 11 and the outer metal wall 12. One or each hollow space is accommodated by blowing continuous glass fiber 15.

したがって本発明による排気ダクト10は、二重壁の鋳造ダクト部材である。この鋳造ダクト部材はモノリシック部品として鋳造される。鋳造部品14のうち、排気流路を画定する内側の金属壁11と、鋳造部品14を外に向かって境界づける外側の金属壁12との間に形成された1つまたはそれぞれの中空空間には、断熱部として連続ガラス繊維15が任意の密度で収められている。   Accordingly, the exhaust duct 10 according to the present invention is a double-walled cast duct member. This cast duct member is cast as a monolithic part. Among the cast parts 14, one or each hollow space formed between the inner metal wall 11 that defines the exhaust passage and the outer metal wall 12 that bounds the cast part 14 to the outside In addition, continuous glass fibers 15 are accommodated at an arbitrary density as a heat insulating portion.

この排気ダクト10は、燃焼機関用の、特に船舶のディーゼル燃焼機関のような大型ディーゼルエンジン用の排気ダクトである。これに関し、鋳造部品14のうち、連続ガラス繊維15が任意の密度で収められる1つまたはそれぞれの中空空間の体積は、特に20,000〜30,000dm3の間の大きさである。 The exhaust duct 10 is an exhaust duct for a combustion engine, particularly for a large diesel engine such as a marine diesel combustion engine. In this regard, the volume of one or each hollow space in the cast part 14 in which the continuous glass fibers 15 are accommodated at an arbitrary density is in particular between 20,000 and 30,000 dm 3 .

10 排気ダクト
11 内側の金属壁
12 外側の金属壁
13 断熱部
14 鋳造部品
15 連続ガラス繊維
16 引込部
17 排出部
18 排出部 10 Exhaust duct
11 Inside metal wall
12 outer metal wall
13 Thermal insulation
14 Casting parts
15 continuous glass fiber
16 Service section
17 Discharge section
18 Discharge section

Claims (8)

内側の金属壁(11)および外側の金属壁(12)を備えており、前記内側の金属壁(11)と前記外側の金属壁(12)との間には繊維から成る断熱部(13)が位置決めされている、燃焼機関用の、特に船舶のディーゼル燃焼機関のような大型ディーゼルエンジン用の排気ダクト(10)において、前記内側の金属壁(11)および前記外側の金属壁(12)が一体的な鋳造部品(14)によって構成されており、前記断熱部(13)が連続ガラス繊維(15)によって構成されていることを特徴とする排気ダクト。   An inner metal wall (11) and an outer metal wall (12) are provided, and a heat insulating part (13) made of fiber is provided between the inner metal wall (11) and the outer metal wall (12). In an exhaust duct (10) for a combustion engine, in particular a large diesel engine such as a marine diesel combustion engine, the inner metal wall (11) and the outer metal wall (12) are An exhaust duct comprising an integral cast part (14), wherein the heat insulating part (13) is composed of continuous glass fibers (15). 前記連続ガラス繊維(15)が、前記鋳造部品(14)の前記内側の金属壁(11)と前記外側の金属壁(12)との間の少なくとも1つの中空空間に収められていることを特徴とする請求項1に記載の排気ダクト。   The continuous glass fiber (15) is housed in at least one hollow space between the inner metal wall (11) and the outer metal wall (12) of the cast part (14). The exhaust duct according to claim 1. 前記連続ガラス繊維(15)が、1つまたはそれぞれの前記中空空間に吹き込まれていることを特徴とする請求項2に記載の排気ダクト。   3. The exhaust duct according to claim 2, wherein the continuous glass fibers (15) are blown into one or each of the hollow spaces. 前記排気ダクトが、1つの引込部(16)および2つの排出部(17，18)を備えたＴ字状の輪郭を有することを特徴とする請求項1から3のいずれか一項に記載の排気ダクト。   4. The exhaust duct according to claim 1, wherein the exhaust duct has a T-shaped profile with one lead-in part (16) and two discharge parts (17, 18). Exhaust duct. 前記排気ダクトが、1つの排出部(16)および2つの引込部(17，18)を備えたＴ字状の輪郭を有することを特徴とする請求項1から3のいずれか一項に記載の排気ダクト。   4. The exhaust duct according to claim 1, wherein the exhaust duct has a T-shaped profile with one discharge part (16) and two lead-in parts (17, 18). Exhaust duct. 前記内側の金属壁(11)および前記外側の金属壁(12)を備えた鋳造部品(14)を準備する段階と、前記鋳造部品(14)の前記内側の金属壁(11)と前記外側の金属壁(12)との間に断熱部(13)として連続ガラス繊維(15)を収める段階とを含む、請求項1から5のいずれか一項に記載の燃焼機関用の排気ダクトの製造方法。   Providing a cast part (14) comprising the inner metal wall (11) and the outer metal wall (12); and the inner metal wall (11) and the outer metal wall of the cast part (14). The method for producing an exhaust duct for a combustion engine according to any one of claims 1 to 5, comprising a step of containing continuous glass fibers (15) as a heat insulating part (13) between the metal walls (12). . 前記連続ガラス繊維(15)が、前記内側の金属壁(11)と前記外側の金属壁(12)との間の少なくとも1つの中空空間に収められることを特徴とする請求項6に記載の方法。   The method according to claim 6, characterized in that the continuous glass fibers (15) are contained in at least one hollow space between the inner metal wall (11) and the outer metal wall (12). . 前記連続ガラス繊維(15)が、1つまたはそれぞれの前記中空空間に吹き込まれることを特徴とする請求項7に記載の方法。   8. A method according to claim 7, characterized in that the continuous glass fibers (15) are blown into one or each of the hollow spaces.
JP2013098341A 2012-06-01 2013-05-08 Exhaust duct Pending JP2013249831A (en)

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DE201210209277 DE102012209277A1 (en) 2012-06-01 2012-06-01 Exhaust line for combustion engine e.g. marine diesel combustion engine, has inner and outer metallic walls formed by single-piece cast component, and glass fiber continuous filaments provided in insulation unit
DE102012209277.3 2012-06-01

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