JPS5966618A - Parts of combustion chamber with catalyst - Google Patents
Parts of combustion chamber with catalystInfo
- Publication number
- JPS5966618A JPS5966618A JP17558882A JP17558882A JPS5966618A JP S5966618 A JPS5966618 A JP S5966618A JP 17558882 A JP17558882 A JP 17558882A JP 17558882 A JP17558882 A JP 17558882A JP S5966618 A JPS5966618 A JP S5966618A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- catalyst
- porous
- oxidation catalyst
- powder
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
- F23Q7/001—Glowing plugs for internal-combustion engines
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、デーｒピルエンジ等の内燃機関に用いられる
酸化触媒層を保護する触媒付燃力°Ｖ室部品に関づ−る
しのである。従来よりグロープラグの外周ｉｎ１に酸化
ｈす：奴層を形成し、酸化触媒による酸化発熱を一部の
熱源どして利用するグロープラグとか、カーボンの」ｆ
Ｌ槓Ｊるスパークプラグの部分に酸化触媒層を形成し、
ノコ−ボン等の堆積物を触媒層で除去づる内燃＋幾関の
部品に触媒１ε）がされた燃焼室部品が多数使用されて
いる。しかしながら、燃ねオイル等に山来覆る煤、石膏
等の堆積物が触媒表面に」１［偵し、触媒層の触ＩＡ！
効果が、堆積物（こより隠ｄ）ｋされて消失する問題が
４１じ（いる。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a catalytic combustion power V-chamber component for protecting an oxidation catalyst layer used in internal combustion engines such as diesel engines. Conventionally, oxidation is applied to the outer periphery of glow plugs, such as glow plugs that form a layer of oxidation and use the oxidation heat generated by the oxidation catalyst as a heat source, and carbon fibers.
An oxidation catalyst layer is formed on the spark plug part,
A large number of combustion chamber parts are used in which a catalyst 1ε) is applied to internal combustion parts in which deposits such as carbon dioxide are removed by a catalyst layer. However, deposits of soot, gypsum, etc., which are often covered with burnt oil, etc., are deposited on the catalyst surface.
There are 41 problems in which the effects disappear due to being hidden by deposits.
本発明は、この問題を解消するｂのて、］−ンジン内て
煤、石高等のＩＷ積物が生じるような場合にあっても、
触媒効果を高くに１ｆ持てき、安定な触媒効果が１１ｔ
られる触媒ｆ」燃焼室部品を提供するものでｄりる。The present invention solves this problem, and even in cases where soot and stone-heavy IW buildup occurs in the engine,
High catalytic effect can last 1f, stable catalytic effect is 11t
It provides catalysts for combustion chamber parts.
即ら、本発明の触媒イ・」燃焼室部品は、部品本体と、
該部品本体の少なくとも一部表面に形成された酸化触媒
層と、該酸化触’Ａ！ Ｉｆ’！７ ’ａ覆う多孔質し
ラミック層どよりなることを１！ｉ徴どするしのである
。That is, the catalyst combustion chamber component of the present invention includes a component body,
An oxidation catalyst layer formed on at least a portion of the surface of the component body; If'! 7 'A covered with a porous ramic layer 1! This is the sign I have.
本発明で、部品本体どは、従来の触媒（ｑ燃焼室部品の
部品そのものを意味する。即ｌ）、スパークプラグ、グ
］」−プラグ、ビス］〜ン、ブＡｚンハー、バルブ、シ
リンダヘッド等である。これらの部品本体は、少なくと
・シ一部表面に触媒酸化層を石りるものである必要があ
る。酸化触媒層としては、白金ＩＡｎ金族並びにそれら
の合金を上体どりるもので、主として一酸化炭素＜ＣＯ
）を炭酸ガス（Ｃｏ・２）、に・酸化した１す、有機物
を酸化分解、づφ：。In the present invention, the parts bodies include conventional catalysts (q means the parts themselves of combustion chamber parts), spark plugs, plugs, screws, valves, cylinder heads. etc. These parts must have a catalytic oxidation layer formed on at least part of their surface. The oxidation catalyst layer is made of platinum IAn metal group or alloys thereof, and mainly contains carbon monoxide < CO
) is oxidized to carbon dioxide gas (Co2), and organic matter is oxidized and decomposed.
役割をりもので゛ある・、、杢梵明に＃３に’で（よ入
、、、元、、夕、、。It's a role to play...in #3 in the heather and in the evening...
酸化触媒層め表面−多孔′：簀セラミックス層・パ１Ｙ
成されていすることに特色がある。。Oxidation catalyst layer surface - Porous': Ceramic layer / P1Y
It is distinctive in what it does. .
多孔τ″ＩＬＩＬ−ラミ９９２層煤、石膏等の微粒子
□を多孔質レラミッ／！ネ層の嚢兜で捕捉し、酸化触Ｉ
！、層に到達させない役割を持つものである。そして、
−酸□化炭系等の気体、極く微”柵な有機物等を多孔質
セラミック、スの気孔を通して酸化触媒層に導びき、酸
化触媒−で耐イ６１さ已る・ｂのである。多、：、１
孔質セラミックス！章形、、成する材料は、特に制限さ
れないが、エンジンの爆発１．振動及び熱に耐えられる
ものである必要がある。、具体的には、、マグネシャ（
Ｍｇｏｄ、シルコニ１７（Ｚｒ Ｏｔ ＞ 、アルミナ
（Ａｌ ２０３）、マグネシャアルミナスピネル（ｆ
ｖＨＩ Ａｔ ２０４ ） 、等が用いられる。尚、多
孔質セラミックス層とり゛るためには、セラミックス粒
子を溶着等で酸化触媒層の表面に溶射する方法、あるい
は硫酸アルミニュウム等を水に溶かして水溶液としたも
のを酸化触媒層上に塗布し１、・、、５・：・乾：、燥
１牌結してｔ、１４品水、ｒａｔ ＭＱ成分四を分ＩＩ
／？蒸散さし、多、７１のアルミプーコー１〜層とする
等の方法を採用１ できる。又、溶射に当っては、プラ
スブック粉末′１ ：どセラミック粉末の複合溶ｑ・１
を行い、・溶射後、ブチ支チック成分を燃ｆ２酸化除去
し、多青Ｌ ’ｊｒｉとりることができる。その他、従
来公知の方法で、多孔質ロラミックス層を形成ターるこ
とがて゛きる。多孔質セラミックス層の厚さとして【、
１．１０〜１００、＝ ′ Ｄ ′ ｌ；′！ ａ
・ ’Ｊａ ７１ ”６ “ ６１１４ ・
４ 、、。 ・二 Ｑ Ｏ％ ４！Ｉ。Porous τ″ILIL-Lami 992 layer Fine particles such as soot, gypsum, etc.
□ Porous Lerami/! Captured in the capsular layer of the Ne layer, oxidized catalyst I
! , which has the role of preventing it from reaching the layer. and,
- Gases such as acidic carbon-based gases, extremely small organic substances, etc. are guided to the oxidation catalyst layer through the pores of the porous ceramic, and the oxidation catalyst has a resistance of 61%. ,:,1 Porous ceramics! The material forming the chapter shape is not particularly limited, but must be able to withstand engine explosion 1. vibration and heat.Specifically, magnesia (
Mgod, silconi 17 (Zr Ot>, alumina (Al 203), magnesia alumina spinel (f
vHI At 204 ), etc. are used. In order to form a porous ceramic layer, ceramic particles can be thermally sprayed onto the surface of the oxidation catalyst layer by welding or the like, or an aqueous solution prepared by dissolving aluminum sulfate or the like in water can be applied onto the oxidation catalyst layer. 1,..., 5...: Drying: Dry 1 tile, t, 14 items water, rat MQ component 4 minutes II
/? Methods such as evaporation, multiple layers, or 71 aluminum pouko layers can be adopted. In addition, for thermal spraying, Plus Book Powder'1: Composite melting of ceramic powder q.1
・After thermal spraying, the oxidized and oxidized components can be removed to form a polygonal L'jiri. In addition, the porous Loramix layer can be formed by any conventionally known method. As the thickness of the porous ceramic layer [,
1.10~100,='D'l;'! a
・'Ja 71 "6" 6114 ・
4.・Two Q O% 4! I.
度が適当である。The degree is appropriate.
本発明の触媒（ｑ燃埠蛮部品ｔｌｆｌ♀化触媒層、の表
面に多孔質セラミックス層が形成されてＪ３す、・この
多孔質セラミック層層に、比較的粒径の人順い煤、ある
いはエンジンオイル中から主とし１山来する石膏等がイ
リ着する。一方、−酸化炭素ガスあるいは未燃焼石（幾
物等の微れ１ガス、微細粒子は、多孔質Ｃラミン９３層
の気孔から酸化触’Ｊａ層に達し、酸化触媒層で酸化さ
れて除かれる。このため、酸化触媒層が煤とか石膏等に
にり隠蔽される恐れが少なくなり、酸化触媒層の耐久性
が向上する。A porous ceramic layer is formed on the surface of the catalyst of the present invention (Q combustion part TLFL♀ conversion catalyst layer), and this porous ceramic layer is coated with soot or Gypsum, etc., which mainly come from the engine oil, are deposited.On the other hand, carbon oxide gas or unburned stones (fine gases and fine particles, such as carbon oxide gas or unburned stones) are collected from the pores of the porous C lamin 93 layer. The oxidation catalyst reaches the Ja layer and is oxidized and removed by the oxidation catalyst layer.Therefore, the possibility that the oxidation catalyst layer is covered with soot, plaster, etc. is reduced, and the durability of the oxidation catalyst layer is improved.
以下、実施例により本発明を説明する。The present invention will be explained below with reference to Examples.
、□本発明の実施例の酸化触媒付燃焼室部品であるグロ
ープラグの一部欠損立面図を第１図に、□その先端部の
拡大図を第２図に示づ″。このグ１−１−プラグの本体
１は、従来のグロープラグと同様に、コイル状のヒータ
ー１１がヒラミックス粉末１２「ｔｌに充填され、それ
らを耐熱金属性のシース管１・３が取り囲む４Ｍ ’ｌ
Ａｘと４丁っている。そしてヒーター１１の一端は、プ
ラグの中心電極１４と結線し、ヒーター１１の他端は、
プラグハウジング１５に結線されているａなお、中心電
極１４と、プラグハウジング１５の間は、耐熱性セラミ
ックスが介在して両者を絶縁している。シース管１３の
外表面に［ま、白金Ｊ：りなる酸化触！Ｉ！層２が形成
されている。ざらにこの酸化触媒層２０表面に多孔質ヒ
ラミックス層３が形成されている。この多孔Ｓ（ｔラミ
ックス層３は、粒径１０〜４０ミクロンのアルミナ粉末
と同じく粒径１０〜４０ミク１１１ンのプラスチック粉
末を複合溶銅により、酸化触媒層２の表面に溶射し、そ
の後、グロープラグ１のと−タ−１１に通電しで、約（
３００℃に加熱し、空気中で溶銅したセラミックス粉末
を加熱燃焼さＵその部分に多孔′ｉｉ層を形成したもの
でｄする。尚、この多孔質セラミック層の平均厚さは、
５０ミクロン、気孔率は７０％であった。次に、このグ
【二１−プラグの触媒能を検査するために、本実施例の
グロープラグど多孔質セラミック層が形成されていない
従来のグロープラグを用い、ディーゼルエンジンに紺み
イ（」（ノ、ディーロル」−ンジンのオイルシールリン
グを調整してエンジンオイルを少Ｗ燃焼案内に漏し、故
意に不純物を堆積さ１１グロープラグの触媒能を評価し
た。第３図にその結果を示づ。, □A partially cutaway elevational view of a glow plug, which is a combustion chamber component equipped with an oxidation catalyst according to an embodiment of the present invention, is shown in FIG. 1, and □An enlarged view of its tip is shown in FIG. -1- The main body 1 of the plug consists of a coiled heater 11 filled with Hiramix powder 12''l, which is surrounded by heat-resistant metal sheath tubes 1 and 3.
There are 4 guns with Ax. One end of the heater 11 is connected to the center electrode 14 of the plug, and the other end of the heater 11 is connected to the center electrode 14 of the plug.
Note that a heat-resistant ceramic is interposed between the center electrode 14 and the plug housing 15 to insulate them. On the outer surface of the sheath tube 13 [Platinum J: Rinaru oxidation contact! I! Layer 2 is formed. A porous Hiramix layer 3 is formed roughly on the surface of this oxidation catalyst layer 20. This porous S(t lamix layer 3 is made by thermally spraying alumina powder with a particle size of 10 to 40 microns and plastic powder with a particle size of 10 to 40 microns, which is the same as that of 111 microns, using composite molten copper, and then , when power is applied to the terminal 11 of the glow plug 1, approximately (
A ceramic powder made of molten copper is heated to 300° C. in air and then heated and burned to form a porous layer in that portion. The average thickness of this porous ceramic layer is
The diameter was 50 microns and the porosity was 70%. Next, in order to test the catalytic ability of this plug, we used a conventional glow plug in which no porous ceramic layer was formed, such as the glow plug of this example, and installed it in a diesel engine. The catalytic performance of the 11 glow plug was evaluated by adjusting the engine's oil seal ring to leak engine oil to the low W combustion guide and intentionally depositing impurities. Figure 3 shows the results. zu.
尚；本実施例のグロープラグも従来のグロープラグ・も
プラグ表面に黄褐色のｊ（Ｌ偵物が児られた。′第３３
図は、横軸に運転部間１．縦軸、に触ＩＡｊ能を示した
ちのである。そして、白丸は、本発明の実施例のグ］」
−プラグの触媒能を、黒丸は、従来のグ１」−ブックの
触媒能を示しものである。触媒Ｏｉｉ・についてはＢ
−ｔタンを含むガスを３１１電加熱して７５０℃でグロ
ープラグに流し、その酸化された量をＣ０２ ：ｌＩス
のｍｌでｌｌ１ｌ定し、いずれも耐久試験前のグ］１−
プラグのＣＣ）２刀ス量を１００％どじ、耐久運転１１
，１１間経過後のグ［−１−プラグについのＣＯ２ガス
光ｒ、をンｉ！ ｋ求め、その１７５を９（、、どじで
示（］たものである９、この第３図、Ｊ、す、本発明の
酸化触媒層の表面に多孔質しラミック層を右づるりに１
−ゾシクは、１２０１Ｌ’１間の運転経過（像に、ｌ１
３いくし初期の８０９６以七の酸化触な）（能をしっで
いる。これに対（〕て、従来の酸化触媒層が表面に露出
しでいるタイプのグ１１−１ラグにあつ−（は、はは１
００時間−Ｃ初明の１０％Ｉメ下の触ＩＡｔ ｌ’ｌ’
：’；に低小しでいるのがわかる。Incidentally, both the glow plug of this embodiment and the conventional glow plug had a yellowish brown color on the surface of the plug.
In the diagram, the horizontal axis shows the distance between operating parts 1. The vertical axis shows the tactile ability. And white circles indicate examples of the present invention]
- The catalytic ability of the plug is shown, and the black circle shows the catalytic ability of the conventional plug. B for catalyst Oii.
A gas containing T-tan was electrically heated at 311°C and flowed through a glow plug at 750°C, and the amount of oxidation was determined in ml of CO2:lI.
Plug CC) 100% 2 sword amount, durable operation 11
, After 11 minutes have elapsed, the CO2 gas light on the plug is turned on! K is calculated, and 175 is shown as 9 (,, doji ()).
- Zosik's driving history between 1201L'1 (in the image, l1
The oxidation catalyst of the early 8096 and later 3 combs has a high performance.In contrast, the oxidation catalyst layer of the conventional oxidation catalyst layer of the type 11-1 lug is exposed on the surface. (Ha, ha ha 1
00 hours-C Hatsumei's 10% I At l'l'
:'; You can see that it is low and small.
第１図、第２図は、本発明の実施１ｔすに阜づいたスパ
ー・クブシグ４−示し、第゛１図はその一部欠１（１仝
体立面図、第２図は、第１図の先端拡大断面図、第３３
図は耐久１１１間と触媒能の関係を示復線図でｊＪｉる
。
１・・・・・・り［１−プラグ
２・・・・・・触媒層FIGS. 1 and 2 show a fully assembled spark assembly 4 in which the present invention has been carried out; FIG. Enlarged sectional view of the tip, No. 33
The figure is a diagram showing the relationship between durability and catalytic performance. 1...R[1-Plug 2...Catalyst layer
Claims (1)
に形成された酸化触媒層と、該酸化触媒＋ｉ＝３を覆う
多孔質レラミツク１１ηとよりなることを特徴とＪる触
媒イ」燃焼室部品。 〈２）部品本体はグロープラグである待ム′１請求の範
囲第１項記載の触媒イク」燃焼室部品。(1) A catalytic converter characterized by comprising a part body, an oxidation catalyst layer formed on at least a part of the surface of the part body, and a porous layer 11η covering the oxidation catalyst +i=3. Combustion chamber parts. (2) A combustion chamber component according to claim 1, wherein the main body of the component is a glow plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17558882A JPS5966618A (en) | 1982-10-06 | 1982-10-06 | Parts of combustion chamber with catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17558882A JPS5966618A (en) | 1982-10-06 | 1982-10-06 | Parts of combustion chamber with catalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5966618A true JPS5966618A (en) | 1984-04-16 |
Family
ID=15998701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17558882A Pending JPS5966618A (en) | 1982-10-06 | 1982-10-06 | Parts of combustion chamber with catalyst |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5966618A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5075536A (en) * | 1990-05-17 | 1991-12-24 | Caterpillar Inc. | Heating element assembly for glow plug |
| US5580476A (en) * | 1995-06-21 | 1996-12-03 | Caterpillar Inc. | Combination catalyst wire wrapped a glow plug |
| US5593607A (en) * | 1995-06-21 | 1997-01-14 | Caterpillar Inc. | Combustion catalyst wire wrapped on corrosion resistive glow plugs |
| US6392199B1 (en) * | 1999-05-05 | 2002-05-21 | Beru Ag | Glow plug and process for its manufacture |
| WO2006000489A1 (en) * | 2004-06-26 | 2006-01-05 | Robert Bosch Gmbh | Pencil type glow plug with a glow plug coated with a protective layer |
| JP2008076044A (en) * | 2006-09-22 | 2008-04-03 | Robert Bosch Gmbh | Method and device for coating starter element used for combustion process of internal combustion engine |
-
1982
- 1982-10-06 JP JP17558882A patent/JPS5966618A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5075536A (en) * | 1990-05-17 | 1991-12-24 | Caterpillar Inc. | Heating element assembly for glow plug |
| US5580476A (en) * | 1995-06-21 | 1996-12-03 | Caterpillar Inc. | Combination catalyst wire wrapped a glow plug |
| US5593607A (en) * | 1995-06-21 | 1997-01-14 | Caterpillar Inc. | Combustion catalyst wire wrapped on corrosion resistive glow plugs |
| US6392199B1 (en) * | 1999-05-05 | 2002-05-21 | Beru Ag | Glow plug and process for its manufacture |
| WO2006000489A1 (en) * | 2004-06-26 | 2006-01-05 | Robert Bosch Gmbh | Pencil type glow plug with a glow plug coated with a protective layer |
| JP2008076044A (en) * | 2006-09-22 | 2008-04-03 | Robert Bosch Gmbh | Method and device for coating starter element used for combustion process of internal combustion engine |
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