JPS5872609A - Fine particle collective purifier - Google Patents
Fine particle collective purifierInfo
- Publication number
- JPS5872609A JPS5872609A JP56171021A JP17102181A JPS5872609A JP S5872609 A JPS5872609 A JP S5872609A JP 56171021 A JP56171021 A JP 56171021A JP 17102181 A JP17102181 A JP 17102181A JP S5872609 A JPS5872609 A JP S5872609A
- Authority
- JP
- Japan
- Prior art keywords
- filter
- exhaust gas
- heater
- heaters
- ceramic
- 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
- 239000010419 fine particle Substances 0.000 title description 4
- 239000000919 ceramic Substances 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 11
- 238000005524 ceramic coating Methods 0.000 claims abstract 2
- 238000000746 purification Methods 0.000 claims description 8
- 230000008929 regeneration Effects 0.000 claims description 4
- 238000011069 regeneration method Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000001172 regenerating effect Effects 0.000 abstract description 5
- 238000002485 combustion reaction Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 238000005187 foaming Methods 0.000 abstract 1
- 239000000446 fuel Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- WURBVZBTWMNKQT-UHFFFAOYSA-N 1-(4-chlorophenoxy)-3,3-dimethyl-1-(1,2,4-triazol-1-yl)butan-2-one Chemical compound C1=NC=NN1C(C(=O)C(C)(C)C)OC1=CC=C(Cl)C=C1 WURBVZBTWMNKQT-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
- F01N3/027—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using electric or magnetic heating means
-
- 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
- F01N2390/00—Arrangements for controlling or regulating exhaust apparatus
- F01N2390/02—Arrangements for controlling or regulating exhaust apparatus using electric components only
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、ディーゼルエンジンの排気ガス中に含まれ
る微粒子、特に炭素を主体とする／４ティキュレートを
捕集して排気ガスを浄化する微粒子捕集浄化装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a particulate collection and purification device that purifies the exhaust gas by collecting particulates contained in the exhaust gas of a diesel engine, particularly /4 ticulates mainly composed of carbon.
ディーゼルエンジンの排気ガス中３＝は、特に炭素を主
体とする微粒子状のノｆティキュレートが含まれるもの
で、排気ガスを浄化するためＣ；は、このノ臂ティキュ
レートを排気ガス中から排除しなければならない。そし
て、この微粒子状Δティキュレートを捕集して浄化する
ためには、排気系に対してセラミック製のへ二カム構造
体あるいは発泡構造体よりなるフィルタを用いることが
考えられている。しかし、このようなフイルタな排気系
の中に設置し、排気ガスを通過させるようにした場合（
二は、フィルタによって捕集された微粒子によって排気
通路の抵抗が増大するようになり、エンジンの出力低下
をまねくようになる。Diesel engine exhaust gas contains especially fine particulate noticulates mainly composed of carbon, and in order to purify the exhaust gas, C; eliminates these noticulates from the exhaust gas. Must. In order to collect and purify this particulate Δticulate, it has been considered to use a filter made of a ceramic hemi-cam structure or a foam structure in the exhaust system. However, if such a filter is installed in the exhaust system and allows exhaust gas to pass through (
Second, the particulates collected by the filter increase the resistance of the exhaust passage, leading to a reduction in engine output.
このような点を解決する手段としては、バーナを用いて
捕集された微粒子を燃焼浄化すること、エンジン排気口
近傍に設置し且つエンジン排気ガスが高温になるような
条件でエンジンを運転して微粒子な燃焼浄化すること、
および電熱ヒータを配設して電熱により微粒子を燃焼浄
化すること等が考えられている。しかし、このような手
段では、それぞれ以下に示すような欠点が存在する。One way to solve this problem is to use a burner to burn and purify the collected particulates, or to install a burner near the engine exhaust port and operate the engine under conditions where the engine exhaust gas becomes hot. Particulate combustion purification,
It is also being considered to provide an electric heater to burn and purify the particulates using electric heat. However, each of these methods has drawbacks as shown below.
（烏）バーナ式
燃料供給装置および点火装置等が必要となるため、必然
的に複雑高価なものとなり、また排気系に燃料を導くよ
うになるものであるため、火災の危険も増大する。(Crow) A burner type fuel supply system, an ignition system, etc. are required, which inevitably makes the system complicated and expensive.Furthermore, since the fuel is introduced into the exhaust system, the risk of fire increases.
（ｂ）エンジン近傍に設置する方式
振動が大きく且つ高温の条件下であるため、機械的強度
が要求されるようになり、また排気ガス温を通常走行時
において、浄化再生に必要な高温（６００〜７００℃以
上）にするためには特殊な運転条件（空燃比なりッテの
状態系し、また噴射時期を変更する）が要求され、出力
低下および燃量悪化等をまねく。(b) Installation method near the engine Due to the high vibration and high temperature conditions, mechanical strength is required. -700° C. or higher) requires special operating conditions (depending on the air-fuel ratio and changing the injection timing), which leads to a decrease in output and fuel consumption.
（Ｃ）電熱ヒータ式
一体に配設したものでは、同時に再生温度以上に加熱す
るため、大量の電力を必要とするようになり、エンジン
、車輌システムに悪影響を与えるものであり、また通常
の金属線ヒータでは耐久性にとぼしいものとなる。(C) An electric heater type that is installed in one piece requires a large amount of electric power as it simultaneously heats above the regeneration temperature, which has a negative impact on the engine and vehicle system. Wire heaters have poor durability.
この発明は上記のような点に鑑みなされたもので、ディ
ーゼルエンジンからの排気中に含まれる微粒子パティキ
ュレートを確実に捕集すると共に、これを安全且つエン
ジン出力等に悪影響を与えることなく燃焼浄化しフィル
タの再生を行ない得るようにする耐久性に優れた微粒子
捕集浄化装置を提供しようとするものである。This invention was made in view of the above points, and it is possible to reliably collect particulates contained in exhaust from a diesel engine, and to burn and purify them safely and without adversely affecting engine output, etc. It is an object of the present invention to provide a particulate collection and purification device with excellent durability that enables filter regeneration.
すなわち、この発明に係る浄化装置は、エンジン排気系
に設置され、排気ガス中に含まれる微粒子を捕集するフ
ィルタの上流側に、排気ガス通過用の開口を形成したセ
ラミック被覆した再生加熱用と−タを設置するものであ
る。That is, the purification device according to the present invention is installed in an engine exhaust system, and has a ceramic-coated regenerative heating filter with openings for passing the exhaust gas formed on the upstream side of a filter that collects particulates contained in the exhaust gas. - This is to install a data center.
以下図面を参照してこの発明の一実施例を説明する。第
１図および第２図はその構成を示したもので、１１は断
面楕円形状の例えばステンレスで構成した筒状のケース
であり、このケース１１内には断熱綬衡材層Ｉ２を介し
て、多孔質発泡セラミックからなるコージライト質のフ
ィルタ１３が充填される。このケース１１は、詳細な図
示してないがディーゼルエンジンの排気通路に設置され
、排気ガスが上記フィルター１３部を通過して排出され
るようになるもので、このフィルタ１３の排気ガス流の
上流側の端面部には、それぞれセラミック被覆な箆した
再生加熱用の複数の電熱ヒータ１４ｍ、１４ｂ・・・を
設置する。An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 show the structure. Reference numeral 11 is a cylindrical case made of, for example, stainless steel and has an elliptical cross section. A cordierite filter 13 made of porous ceramic foam is filled. This case 11 is installed in the exhaust passage of a diesel engine, although not shown in detail, so that the exhaust gas passes through the filter 13 section and is discharged. A plurality of ceramic-coated electric heaters 14m, 14b, . . . for regenerative heating are installed on the side end faces.
この場合、第２図から明らかなように、フィルタ１３の
上流側端面の排気ガス通過面を、例えば８個に分割設定
し、その各分割区域それぞれに対応して電熱ヒータ１４
ｍ、、、ｚ ４ ｂ・・・が設置されるものであり、
この複数（この実施例の場合は８個）の電熱ヒータ１４
ａ、１４ｂ・・・に対しては、図示しない加熱ｗ！ｉ源
回路から順位性をもって順次加熱電流が分配供給される
ものである。In this case, as is clear from FIG. 2, the exhaust gas passage surface of the upstream end surface of the filter 13 is divided into, for example, eight sections, and the electric heater 14 is connected to each divided section.
m, , z 4 b... are installed,
These plural (eight in this embodiment) electric heaters 14
a, 14b... are heated (not shown)! The heating current is distributed and supplied sequentially from the i-source circuit in order of priority.
ここで示す電熱ヒータＩ ４ ａ 、 Ｉ ４ ｂ 曲
は、第３図および第４図に示すように１例えばアルミナ
等のセラミックシート１５上に印刷等の手段でモリブデ
ン（Ｍｏ）、タングステン（Ｗ）等の発熱金職な含むペ
ーストでグリッド状の発熱抵抗線１６を形成し、さらに
セラミックシート１７を被せて一体化して構成される。The electric heaters I 4 a and I 4 b shown here are made of molybdenum (Mo), tungsten (W), etc. by printing or other means on a ceramic sheet 15 made of alumina, etc., as shown in FIGS. 3 and 4. A grid-shaped heat generating resistance wire 16 is formed using a paste containing a heat generating metal such as the like, and is further covered with a ceramic sheet 17 to be integrated.
すなわち、発熱抵抗線１６を１対のセラミックシート１
５゜１７でチンドイツテ状に被覆した構造とするもので
あり、上記グリッド状の発熱抵抗線１６の存在しない部
分を利用して、その両面を透過する多数の開口１８ｍ、
１８ｂ・・・の形成されるものである。That is, the heating resistance wire 16 is connected to a pair of ceramic sheets 1.
It has a structure in which it is coated in the form of a tindeerte with an angle of 5° 17 mm, and a large number of openings 18 m are provided on both sides of the grid-like heating resistance wire 16, making use of the area where the heating resistance wire 16 does not exist.
18b... are formed.
すなわち、発熱ヒータ１４ｍ、１４ｂ・・・を第１図お
よび第２図に示すようにフィルタ１３の排気ガス通過面
に設置した場合でも、排気ガスが開口ＩＩｍ、１８ｂ・
・・を介して円滑にフィルタ１３部に導かれ排出される
ようにするものであり、排気通路の抵抗を増大させない
ために、開口率３〇−以上とすることが望ましい。That is, even when the heat generating heaters 14m, 14b, . . . are installed on the exhaust gas passage surface of the filter 13 as shown in FIGS.
. . so that the gas is smoothly guided to the filter 13 and discharged, and in order to avoid increasing the resistance of the exhaust passage, it is desirable that the aperture ratio is 30 or more.
尚、発熱抵抗体としては、その他８１Ｃ。In addition, the heating resistor is 81C.
Ｍｏ５１ｇ 等の一般的セラミックヒータを薄板状に
作製したものを、１対のアルミナのセラミックシートで
サンドイツデ構造としたものでもよパ、また「Ｔ ｉ
Ｃ＋Ａ／ ＊ＯｓＪの混合割合な適ｉ選定したものでも
よい。特に、この混合物はその混合割合を変えることに
よって、比抵抗の値を自由に選択することができ、また
に酸化性についても艮好な性能の得られるものである。It is also possible to make a general ceramic heater such as Mo51g into a thin plate shape and create a sandwich structure with a pair of alumina ceramic sheets.
The mixture ratio of C+A/*OsJ may be selected as appropriate. In particular, the specific resistance value of this mixture can be freely selected by changing the mixing ratio, and excellent performance in oxidizing properties can also be obtained.
すなわち、上記のように構成される微粒子捕集浄化装置
は、前述したようにエンノンの排気系に対して通常の手
段で設置されるもので、エンノンが運転されると排気ガ
ス中の微粒子／ｌティキュレートがセラミックフィルタ
７１１＝捕襲される。そして、一定量以上の微粒子が捕
集さレルと、エンジンの出力低下をきたすので、時間、
圧力損失等の情報からこの微粒子捕集状態を検知し、再
生運転がされる。すなわち、分割設定された電熱ヒータ
１４ｍ、１４ｂ・・情＝対して順次に発熱電流を供給し
、その分割区域毎に順次捕集微粒子の再生燃焼を実行す
るものである−
この場合、前述したように電熱ヒータ１４１゜Ｘ４ｂ・
・・には、排気ガスを通過させる多数の開口（ＩＩｍ、
１８ｂ・・・が形成されている。したがって、この開口
１８ｍ、ｌ１ｊｂ・・・の周り、すなわち発熱抵抗線１
６の極く近傍に排気ガス中の炭素を主成分とする微粒子
が良く付着し、この抵抗線１６に対する通電時に、その
発生熱が効率良く微粒子に伝達され、この捕集された微
粒子を燃焼除去し、効率良く浄化できるようになるもの
である。That is, the particulate collection and purification device configured as described above is installed in the exhaust system of Ennon by normal means as described above, and when Ennon is operated, particulate matter/l in the exhaust gas is removed. Ticulate is captured by the ceramic filter 711. If more than a certain amount of particles are collected, the engine output will decrease, so it will take a while.
This particulate collection state is detected from information such as pressure loss, and regeneration operation is performed. That is, heating current is sequentially supplied to the divided electric heaters 14m, 14b, etc., and the collected particulates are sequentially regenerated and burned in each divided area. Electric heater 141°X4b・
... has a large number of openings (IIm,
18b... are formed. Therefore, around the openings 18m, l1jb..., that is, the heating resistance wire 1
Fine particles whose main component is carbon in the exhaust gas often adhere to the vicinity of the resistance wire 16, and when electricity is applied to this resistance wire 16, the generated heat is efficiently transferred to the fine particles, and the collected fine particles are burned and removed. This allows for efficient purification.
尚、上記複数の電熱ヒータ１４龜、１４ｂ・・・に対す
る通電要領は、各ヒータが６００℃〜１０００℃で約１
分以内で発熱するように設定すればよいもので、通電ヒ
ータ電力は約５０Ｗ／ｃｄである。In addition, the procedure for energizing the plurality of electric heaters 14, 14b, etc. is as follows:
It is sufficient to set the heater so that it generates heat within minutes, and the energized heater power is approximately 50 W/cd.
ここで、電熱ヒータ１４ｍ、１４ｂ・・・は、第４図の
囚で示すように上面より下面の幅が大きくなるように両
側１ｉ１９＠、Ｘｍｂをテーノ臂状に形成し、断面台形
状とする。そして、第５図の囚に示すようにフィルタＩ
３の上流面に上記台形に対応する嵌め合い溝２０を形成
し、フィルタＩ３の外周方向からセラミック被覆された
上記電熱ヒータ１４ｍ、１４ｂ・・・を挿入し、この電
熱ヒータ１４ｍ、１４ｂ・・・がフィルタＩＪと一体化
して設置されるようにする。この場合、この電熱ヒータ
１４ｍ、１４ｂ・・・の上流側に、さらにフィルタ１３
ｍを例えば５〜３０ｍ程度の範囲で設置するようにして
もよい。Here, the electric heaters 14m, 14b... are formed with both sides 1i19@, Xmb in the shape of a tenor arm so that the width of the lower surface is larger than that of the upper surface, as shown by the circle in FIG. 4, and the cross section is trapezoidal. . Then, as shown in Figure 5, the filter I
A fitting groove 20 corresponding to the trapezoid is formed on the upstream surface of the filter I3, and the ceramic-coated electric heaters 14m, 14b... are inserted from the outer peripheral direction of the filter I3, and the electric heaters 14m, 14b... is installed integrally with the filter IJ. In this case, a filter 13 is further provided upstream of the electric heaters 14m, 14b...
m may be installed in a range of about 5 to 30 m, for example.
また、この電熱ヒータ１４ｍ、１４ｂ・・・は第４図の
（均に示すよう（−下面側を大きくした側面の段状構造
としてもよい、この場合、第ｓ囚の四に示す嵌め合い溝
Ｊ＃の断面形状を、上記ヒータ１４ｍ、１４ｋｍの段付
きの断面形状どすればよいものであるが、第５図の（均
のようにフィルタＩＩの上流面にヒータＸ４ｍ、１４ｂ
・・・を設置し、これを上記断面形状に合致した溝２１
を有する他のフィルタ部材２１で押え付は固定するよう
にしてもよい。In addition, the electric heaters 14m, 14b, etc. may have a step-like structure on the side surface with the lower surface side enlarged (as shown in FIG. 4). The cross-sectional shape of J# may be the same as the stepped cross-sectional shape of the heaters 14m and 14km, but the heaters X4m and 14b on the upstream surface of the filter II as shown in
. . . and connect it to the groove 21 that matches the cross-sectional shape described above.
The pressing may be fixed using another filter member 21 having the following.
要するに、セツミック被覆された電熱ヒータＩ４鳳、Ｘ
４ｂ−・・とセ゛ラミックフィルタＩＪとが、と−タの
挿し込みにより一体化され、ヒータ１４ｍ、１４ｋ・・
・が確実に固定される構造とすればよいもので、このよ
うに構成すれば電熱ヒータ部の組み立てが非常に簡易に
して確実に行なわれるようになる。In short, Cetsumic coated electric heater I4 Otori,
4b-... and the ceramic filter IJ are integrated by inserting the heater, and the heaters 14m, 14k...
It is only necessary to have a structure that securely fixes the electric heater part, and with this structure, the electric heater part can be assembled very easily and reliably.
このようにして電熱ヒータ１４ｍ、１４ｂ・・・はフィ
ルタ１３に対して固着される状態となるものであるが、
このヒータ１４ｍ、１４ｂ・・・は充分に軽量（＝構成
することができ、したがってエンノン排気系に設置して
振動を受けるような状態にあっても、ヒータ自体に割れ
を発生する等の障害が発生することが防止される。また
、排気ガスの高温にさらされたり、また微粒子の燃焼時
の高温状態にあっても、ヒータ１４畠。In this way, the electric heaters 14m, 14b... are fixed to the filter 13,
These heaters 14m, 14b... can be configured to be sufficiently lightweight, so even if they are installed in the Ennon exhaust system and are exposed to vibrations, they will not cause problems such as cracks in the heaters themselves. Furthermore, even when exposed to the high temperature of exhaust gas or under high temperature conditions during combustion of particulates, the heater 14 is prevented from occurring.
１４ｂ・・・は嵌め合いで固定されるものであるため、
熱歪みによる影響な逃がすことができ、割゛れや破壊に
まで至らしめることを確実に阻止できる。また、上記説
明ではフィルタＩＳに対してヒータ１４ｍ、１４ｂ・・
・を直接的に結合する状態で示したが、この両者の間に
緩衝材を介在させるようにしてもよいものであり一また
両者を挿入結合した後に、熱歪の影響を受は難い耐熱性
接着材等によって固着するようにしてもよい。14b... is fixed by fitting, so
The effects of thermal distortion can be released, and cracking and destruction can be reliably prevented. Furthermore, in the above explanation, the heaters 14m, 14b, etc. are used for the filter IS.
・Although the two are shown in a state where they are directly connected, a buffer material may be interposed between the two, and after the two are inserted and connected, the heat resistance is not easily affected by thermal distortion. It may be fixed using an adhesive or the like.
以上のようにこの発明によれば、フィルタの上流面に対
してセラミック被覆の電熱ヒータを設置し、捕集した微
粒子を燃焼し再生するようにしたので、耐熱、耐酸化性
に優れたものとすることができ、エンジンの排気ガス中
で効果的に使用できるものである。そして、このと−タ
に開口を設けることによって、ヒーター槍を大きくとっ
た場合でも排気ガスの通過山積を大きくとって圧損を小
さくすることができ、発熱源に近接するガス流によって
微粒子を付着させ、有効に再生燃焼効果を向上させるこ
とができる。As described above, according to the present invention, a ceramic-coated electric heater is installed on the upstream surface of the filter to burn and regenerate the collected particles, resulting in a filter with excellent heat resistance and oxidation resistance. It can be used effectively in engine exhaust gas. By providing an opening in this heater, even if the heater spear is made large, the exhaust gas can pass through a large pile to reduce pressure loss, and the gas flow close to the heat source can cause particles to adhere to it. , it can effectively improve the regenerative combustion effect.
第１図はこの発明の一実施例に係る微粒子捕集浄化装置
を一部切欠いて示す側面図、第２図は上記装置のフィル
タ上流面部を示す図、１４３図は上記装置に使用される
電熱ヒータを説明する図、第４図の（ＡＪ（Ｂ）はそれ
ぞれ電熱ヒータの例を示す断面図、ｉＪ５図の囚（均は
それぞれ上記電熱ヒータの取り付は手段を説明する図で
ある。
１１…ケース、１３・・・フィルタ、１４１゜１４ｂ・
・・電熱ヒータ、１５．１１・・・セラミックレート、
１６・・・発熱抵抗線、１８ａ、Ｊａｂ・・・開口、２
０，１１…嵌め合い溝。
出−人代理人 弁理士 鈴 江 武 彦ｊ１１図
ｊＩ２図
第３図 第４図
血（１４ｂ・・・）
第５図Fig. 1 is a partially cutaway side view of a particulate collection and purification device according to an embodiment of the present invention, Fig. 2 is a view showing the upstream side of the filter of the above device, and Fig. 143 is an electric heating device used in the above device. Figure 4 (AJ (B)) is a cross-sectional view showing an example of an electric heater, Figure 4 (AJ (B)) is a diagram explaining the heater, and Figure 4 (AJ (B) is a cross-sectional view showing an example of an electric heater, respectively. ...Case, 13...Filter, 141°14b・
...Electric heater, 15.11...Ceramic rate,
16...Heating resistance wire, 18a, Jab...Opening, 2
0, 11...Fitting groove. Representative Patent Attorney Takehiko Suzue Figure 11 Figure 2 Figure 3 Figure 4 Blood (14b...) Figure 5
Claims (5)
てこのガス中の微粒子を捕集するフィルタと、このフィ
ルタの排気ガス流の上流伺に設けられ排気ガスの通過で
きる通路を有するセラミック被覆した再生加熱用ヒータ
とを具備したことを特徴とする微粒子捕集浄化装置。(1) A filter installed in the engine exhaust system that allows exhaust gas to pass through and collects particulates in this gas, and a ceramic coating that is installed upstream of this filter in the flow of exhaust gas and has a passage through which the exhaust gas can pass. What is claimed is: 1. A particulate collection and purification device comprising: a heater for regeneration heating;
挾み込み構成し、この発熱体の存在しない部分に両面を
透過する開口を形成するようにした特許請求の範囲第１
項記載の装置。(2) The above-mentioned printer is constructed by sandwiching a heating element between a pair of thin ceramic plates, and an opening that transmits light from both sides is formed in a portion where the heating element is not present.
Apparatus described in section.
許請求の範囲ｊ１２ＪＪ紀載の装置。(3) The device according to claim j12JJ, wherein the opening of the heater has an opening ratio of 30% or more.
積を少なくとも３つに分割し、その各分割区域それぞれ
に対応する少なくとも３ａｌｌで構成するようＣニジた
特許請求の範囲第１項記載のＭａｔ。(4) The mat according to claim 1, wherein the heater divides the exhaust gas passage area with respect to the filter into at least three parts, and is configured with at least three all parts corresponding to each divided area.
ィルタの上流面に対応して形成された嵌め合い溝部に、
周壁方向から挿入設置するようにした特許請求の範囲第
４項記載の装置。(5) The at least three sets of heaters each have a fitting groove portion formed corresponding to the upstream surface of the filter.
The device according to claim 4, wherein the device is inserted and installed from the direction of the peripheral wall.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56171021A JPS5872609A (en) | 1981-10-26 | 1981-10-26 | Fine particle collective purifier |
| US06/436,439 US4505107A (en) | 1981-10-26 | 1982-10-25 | Exhaust gas cleaning apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56171021A JPS5872609A (en) | 1981-10-26 | 1981-10-26 | Fine particle collective purifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5872609A true JPS5872609A (en) | 1983-04-30 |
Family
ID=15915614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56171021A Pending JPS5872609A (en) | 1981-10-26 | 1981-10-26 | Fine particle collective purifier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5872609A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60116866U (en) * | 1983-04-25 | 1985-08-07 | ダイワ精工株式会社 | Spinning reel spool braking device |
| WO2000034630A1 (en) * | 1998-12-07 | 2000-06-15 | Stt Emtec Aktiebolag | Filter for egr system heated by an enclosing catalyst |
| US8763378B2 (en) | 2007-06-15 | 2014-07-01 | GM Global Technology Operations LLC | Electrically heated particulate filter embedded heater design |
-
1981
- 1981-10-26 JP JP56171021A patent/JPS5872609A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60116866U (en) * | 1983-04-25 | 1985-08-07 | ダイワ精工株式会社 | Spinning reel spool braking device |
| WO2000034630A1 (en) * | 1998-12-07 | 2000-06-15 | Stt Emtec Aktiebolag | Filter for egr system heated by an enclosing catalyst |
| US8763378B2 (en) | 2007-06-15 | 2014-07-01 | GM Global Technology Operations LLC | Electrically heated particulate filter embedded heater design |
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