JPH0323306A - Eliminating device for soot and dust from engine exhaust gas - Google Patents
Eliminating device for soot and dust from engine exhaust gasInfo
- Publication number
- JPH0323306A JPH0323306A JP1155146A JP15514689A JPH0323306A JP H0323306 A JPH0323306 A JP H0323306A JP 1155146 A JP1155146 A JP 1155146A JP 15514689 A JP15514689 A JP 15514689A JP H0323306 A JPH0323306 A JP H0323306A
- Authority
- JP
- Japan
- Prior art keywords
- soot
- dust
- exhaust
- filter element
- throttle valve
- 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
- 239000000428 dust Substances 0.000 title claims abstract description 45
- 239000004071 soot Substances 0.000 title claims abstract description 39
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 239000000919 ceramic Substances 0.000 claims description 9
- 238000002485 combustion reaction Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 description 3
- 239000013618 particulate matter Substances 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000010902 straw 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
- F01N3/0235—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 exhaust gas throttling 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
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Abstract
Description
【発明の詳細な説明】
《産業上の利用分野）
本発明は、エンジンの排気ガスに混入している煤塵（パ
ティキュレート）が火の粉となって放出されることを防
止したエンジンの排気装置に関する。DETAILED DESCRIPTION OF THE INVENTION <<Industrial Application Field> The present invention relates to an engine exhaust system that prevents soot dust (particulates) mixed in engine exhaust gas from being released as sparks.
《従来技術）
エンジンを搭載した作業機を刈芝、稲藁等の可燃物が存
在している場所や、プラント等の可燃物を製造あるいは
貯蔵している場所で運転する場合、エンジンの排気ガス
中に煤塵が混入しているし、この煤塵が火の粉となって
放出され、火災を誘起する虞れがある。そこで従来、エ
ンジンの排気系中に火の粉の原因となる煤塵を捕集する
捕集装置を介在させ、火の粉が放出されないようにして
いた。[Prior art] When operating a work machine equipped with an engine in a place where combustible materials such as grass clippings and rice straw are present, or in a place where combustible materials are manufactured or stored such as in a plant, engine exhaust gas There is soot and dust mixed in, and there is a risk that this soot and dust will turn into sparks and be released, causing a fire. Conventionally, a collection device for collecting soot and dust that causes sparks has been interposed in the engine exhaust system to prevent sparks from being emitted.
このような煤塵捕集装置として、従来では、排気ガス通
路中にセラミックフィルターを配置し、このセラミック
フィルターを通過する間に排気ガス中に混入している煤
塵をフィルターで捕捉することにより、排気ガスから火
の粉の要因となる煤塵を取り除くようにしたものが知ら
れている。Conventionally, such a particulate matter collection device has a ceramic filter placed in the exhaust gas passage, and the particulate matter mixed in the exhaust gas while passing through the ceramic filter is captured by the filter. There is a known device that removes the soot and dust that causes sparks from the fire.
（解決しようとする課題〉
ところが、セラミックフィルターを使用して煤塵を捕捉
するものでは、フィルター材に除去した煤塵が付着して
、ガスのない通路断面積を減少させ、エンジンの排圧が
高くなることから、セラミノクフィルターに付着した煤
塵を燃焼させる必要がある。このため、バーナを配置し
たり、排気温度を上げるための手段を配置したりしなけ
ればならず、構造が複雑化するという問題がある。(Problem to be solved) However, with ceramic filters that capture soot and dust, the removed soot and dust adheres to the filter material, reducing the cross-sectional area of the gas-free passage and increasing engine exhaust pressure. Therefore, it is necessary to burn the soot and dust adhering to the Ceraminoku filter.For this reason, it is necessary to install a burner and a means to increase the exhaust temperature, which complicates the structure. There is.
本発明はこのような点に着目してなされたちので、構造
が簡単で、かつ長期間に亘って煤塵の捕集効率を高く維
持することのできる煤塵捕集装置を提供することを目的
とする。The present invention has been made with attention to these points, and an object of the present invention is to provide a soot and dust collection device that has a simple structure and can maintain high soot and dust collection efficiency over a long period of time. .
《課題を解決するための手段）
上述の目的を達成するために本発明は、セラミックフィ
ルターで構成した煤塵捕集装置をエンジンの排気マニホ
ールドとマフラとの間に配置シ、この煤ｍ ｔｉｌｔ
集装１でのフィルターエレメントよりも下流側に目詰ま
りセンサーを配置するとともに、排気マニホールドに排
気絞り弁を配置し、目詰まりセンサーでの目詰まり検出
作動に基づき排気絞り弁を閉じ側に作動させ、あるいは
、警告灯を点灯作動させて排気絞り弁の閉じ時期を表示
するように構成したことを特徴としている。<<Means for Solving the Problems>> In order to achieve the above-mentioned object, the present invention provides a soot and dust collection device configured with a ceramic filter that is disposed between an exhaust manifold and a muffler of an engine,
A clogging sensor is placed on the downstream side of the filter element in assembly 1, and an exhaust throttle valve is placed on the exhaust manifold, and the exhaust throttle valve is operated to the closing side based on the clogging detection operation of the clogging sensor. Alternatively, the present invention is characterized in that a warning light is turned on to indicate when to close the exhaust throttle valve.
（作 用）
本発明では、セラミックフィルターで構或した煤塵捕集
装置をエンジンの排気マニホールドとマフラとの間に配
置し、この煤塵捕集装置でのフィルターエレメントより
も下流側に目詰まりセンサーを配置するとともに、排気
マニホールドに排気絞り弁を配置し、目詰まりセンサー
での目詰まり検出作動に基づき排気絞り弁を閉じ側に作
動させ、あるいは、警告灯を点灯作動させて排気絞り弁
の閉じ時期を表示するように構或しているので、フィル
ターエレメントに煤塵が付着してフィルターエレメント
が目詰まりを起こして、下流側での排気圧力が一定圧力
以下に低下すると、目詰まりセンサーが目詰まり状態で
あることを検知して目詰まり信号を発し、排気絞り弁を
直接閉弁作動させ、あるいは警告灯を点灯させることに
より、人為的に排気絞り弁を閉弁させる。すると、エン
ジンの燃焼室での燃焼温度が上昇し、高温の排気ガスが
煤塵捕集装置に送り込まれることになるから、フィルタ
ーエレメント付着している煤塵は高温の排気ガスと接触
して燃焼することになる。(Function) In the present invention, a soot and dust collection device configured with a ceramic filter is arranged between an engine exhaust manifold and a muffler, and a clogging sensor is installed downstream of the filter element of this soot and dust collection device. At the same time, an exhaust throttle valve is placed in the exhaust manifold, and the exhaust throttle valve is operated to the closing side based on the clogging sensor's clogging detection operation, or a warning light is turned on to indicate when the exhaust throttle valve should close. If soot and dust adhere to the filter element and the filter element becomes clogged, and the exhaust pressure on the downstream side drops below a certain pressure, the clogging sensor will indicate that the filter is clogged. When it detects that the exhaust throttle valve is clogged, it issues a clogging signal and directly closes the exhaust throttle valve, or lights up a warning light to artificially close the exhaust throttle valve. As a result, the combustion temperature in the engine's combustion chamber increases and the high-temperature exhaust gas is sent to the dust collection device, so the dust adhering to the filter element comes into contact with the high-temperature exhaust gas and burns. become.
《実施例》 図面は本発明の実施例を示す縦断面図である。"Example" The drawings are longitudinal sectional views showing embodiments of the present invention.
この排気装置は、ディーゼルエンジン（１）の俳気マニ
ホールド（２）とマフラ（３）とを連通連結する排気導
出管（４）中に煤塵捕集装置（５〉が配置してある。In this exhaust system, a soot and dust collector (5) is disposed in an exhaust outlet pipe (4) that communicates and connects an intake manifold (2) and a muffler (3) of a diesel engine (1).
この煤塵捕集装置（５）は内部にノ＼ニカム状に形成し
たセラミック製のフィルターエレメント（６）を配置し
て構成してあり、煤塵捕集装置（５）内におけるフィル
ターエレメント（６）よりも下流側にフィルターエレメ
ント（６）を通過したｍ気ｆｆスの圧力を検出する目詰
まりセンサー（７）が配置してある。This soot and dust collection device (5) is configured by arranging a ceramic filter element (6) formed in a comb shape inside, and the filter element (6) in the soot and dust collection device (5) is A clogging sensor (7) for detecting the pressure of air passing through the filter element (6) is also arranged on the downstream side.
また、排気マニホールド（２）の内部には排気絞り弁（
８）が配設してあり、この排気絞り弁（８）は目詰まり
センサー（７）からの目詰まり検出信号に基づいて作動
する電動アクチュエータ（９）により開閉駆動されるよ
うにしてある。即ち、目詰まりセンサー（７）がフィル
ターエレメント（６）の目詰まりを検知して発した目詰
まり信号を制御装置（１０）に入力すると、この制御装
置（ｌＯ）は警報灯（１ｌ）を点灯させるとともに、電
動アクチュエータ（９）の作動信号を出力し、電動アク
チュエータ（９）を作動させて排気絞り弁（８）を閉じ
側に作動するように構或してある。Also, inside the exhaust manifold (2) there is an exhaust throttle valve (
8) is provided, and this exhaust throttle valve (8) is driven to open and close by an electric actuator (9) that operates based on a clogging detection signal from a clogging sensor (7). That is, when the clogging sensor (7) detects clogging of the filter element (6) and inputs the clogging signal issued to the control device (10), this control device (lO) turns on the warning light (1l). At the same time, an actuation signal for the electric actuator (9) is output, and the electric actuator (9) is actuated to close the exhaust throttle valve (8).
このように構成した煤塵捕集装置（５）では、フィルタ
ーエレメント（６）に煤塵が付着してフィルターエレメ
ント（６）が目詰まりを起こすことにより、フィルター
エレメント（６）よりも下流側での排気圧力が一定圧力
以下に低下すると、目詰まりセンサー（７）が目詰まり
状態であることを検知して目詰まり信号を発し、制御装
置（１０）からの出力で電動アクチュエータ（９）を作
動させて排気絞り弁（８）を閉じることになる。すると
、エンジンの燃焼室での燃焼温度が上昇し、排気マニホ
ールド（２）から高温（例えば６００〜７００′Ｃ）の
排気ガスが煤塵捕集装置（５）に送り込まれることにな
る。In the soot and dust collection device (5) configured in this way, the soot and dust adheres to the filter element (6) and causes the filter element (6) to become clogged, resulting in the exhaust air downstream of the filter element (6). When the pressure drops below a certain pressure, the clogging sensor (7) detects the clogging state and issues a clogging signal, and the electric actuator (9) is actuated by the output from the control device (10). The exhaust throttle valve (8) will be closed. Then, the combustion temperature in the combustion chamber of the engine increases, and high temperature (for example, 600 to 700'C) exhaust gas is sent from the exhaust manifold (2) to the soot and dust collector (5).
従って、フィルターエレメント（６）に付着している煤
塵は高温の排気ガスに接触して燃え尽きることになる。Therefore, the soot and dust adhering to the filter element (6) comes into contact with the high-temperature exhaust gas and burns out.
なお、上記実施例では、目詰まりセンサー（７）からの
目詰まり信号に基づいて排気絞り弁（８）の電動アクチ
ュエータ（９）を自動作動させるように構成したが、警
報灯（ｌＯ）の点灯確認後にオペレーターが電動アクチ
ュエータ（９）を人為的に作動させるようにしても良く
、また、排気絞り弁（８）を直接閉弁側に作動させるよ
うにしてもよい。In the above embodiment, the electric actuator (9) of the exhaust throttle valve (8) is automatically activated based on the clogging signal from the clogging sensor (7). After confirmation, the operator may manually operate the electric actuator (9), or the exhaust throttle valve (8) may be directly operated to the valve closing side.
（効 果）
本発明では、セラミックフィルターで構成した煤塵捕集
装置をエンジンの排気マニホールドとマフラとの間に配
置し、この煤塵捕集装置でのフィルターエレメントより
も下流側に目詰まりセンサーを配置するとともに、排気
マニホールドに排気絞り弁を配置し、目詰まりセンサー
での目詰まり検出作動に基づき排気絞り弁を閉し側に作
動させ、あるいは、警告灯を点灯作動させて排気絞り弁
の閉じ時斯を表示するように構成しているので、フィル
ターエレメントに煤塵が付ＩＬてフィルターエレメント
が目詰まりを起こして、下流側での排気圧力が一定圧力
以下に低下すると、目拮まりセンサーが目詰まり状態で
あることを検知して目詰まり信号を発し、排気絞り弁を
直接閉弁作動させ、あるいは警告灯を点灯させることに
より、人為的に排気絞り弁を閉弁させる。すると、エン
ジンの燃焼室での燃焼温度が上昇し、高温の排気ガスが
煤塵捕集装置に送り込まれることになるから、フィルタ
ーエレメントに付着している煤塵は高温ノ排気ガスと接
触して燃焼するから、フィルターエレメントに付着した
煤塵の焼却を簡単な装置で行うことができ、安価に実施
することができる。(Effects) In the present invention, a soot and dust collection device composed of a ceramic filter is placed between the engine exhaust manifold and the muffler, and a clogging sensor is placed downstream of the filter element in this soot and dust collection device. At the same time, an exhaust throttle valve is placed in the exhaust manifold, and the exhaust throttle valve is operated to close based on the clogging sensor's clogging detection operation, or a warning light is turned on to indicate when the exhaust throttle valve is closed. Since the configuration is configured to display this, if the filter element becomes clogged due to soot and dust, and the exhaust pressure on the downstream side drops below a certain pressure, the clogging sensor will detect the clogging. When this condition is detected, a clogging signal is issued, and the exhaust throttle valve is closed directly or a warning light is turned on to artificially close the exhaust throttle valve. As a result, the combustion temperature in the engine's combustion chamber increases and the high-temperature exhaust gas is sent to the dust collection device, so the dust adhering to the filter element comes into contact with the high-temperature exhaust gas and burns. Therefore, the soot and dust adhering to the filter element can be incinerated with a simple device and can be carried out at low cost.
しかも、煤塵の焼却が確実で火の粉が飛び出すことがな
くなる。Moreover, the soot and dust are incinerated reliably and no sparks fly out.
【図面の簡単な説明】
図面は本発明の実施例を示す縦断面図である。
２・・・排気マニホールド、３・・・マフラ、５・・・
煤塵捕集装置、６・・・フィルターエレメント、７・・
・目詰まりセンサー、８・・・排気絞り弁、１１・・・
警告灯。BRIEF DESCRIPTION OF THE DRAWINGS The drawings are longitudinal sectional views showing embodiments of the present invention. 2...Exhaust manifold, 3...Muffler, 5...
Dust collection device, 6...filter element, 7...
・Clogging sensor, 8... Exhaust throttle valve, 11...
Warning light.
Claims (1)
排気ガス中に混入している煤塵を除去するように構成し
たエンジンの排気装置において、 セラミックフィルターで構成した煤塵捕集 装置（５）をエンジンの排気マニホールド（２）とマフ
ラ（３）との間に配置し、この煤塵捕集装置（５）での
フィルターエレメント（６）よりも下流側に目詰まりセ
ンサー（７）を配置するとともに、排気マニホールド（
２）に排気絞り弁（８）を配置し、目詰まりセンサー（
７）での目詰まり検出作動に基づき排気絞り弁（８）を
閉じ側に作動させるように構成したことを特徴とするエ
ンジン排気ガスからの煤塵除去装置 ２、セラミックフィルターで構成した煤塵捕集装置（５
）をエンジンの排気マニホールド（２）とマフラ（３）
との間に配置し、この煤塵捕集装置（５）でのフィルタ
ーエレメント（６）よりも下流側に目詰まりセンサー（
７）を配置するとともに、排気マニホールド（２）に排
気絞り弁（８）を配置し、目詰まりセンサー（７）での
目詰まり検出作動に基づき警告灯（１１）を点灯作動さ
せるように構成したことを特徴とするエンジン排気ガス
からの煤塵除去装置[Claims] 1. A dust collection device (5) is arranged in the exhaust system of the engine,
In an engine exhaust system configured to remove soot and dust mixed in exhaust gas, a soot and dust collection device (5) consisting of a ceramic filter is installed between the engine exhaust manifold (2) and the muffler (3). A clogging sensor (7) is placed downstream of the filter element (6) in this soot and dust collection device (5), and the exhaust manifold (
2), place the exhaust throttle valve (8), and place the clogging sensor (
A soot dust removal device 2 from engine exhaust gas, characterized in that the exhaust throttle valve (8) is configured to operate to the closing side based on the clogging detection operation in step 7), and a soot dust collection device configured with a ceramic filter. (5
) to the engine exhaust manifold (2) and muffler (3)
A clogging sensor (
7), an exhaust throttle valve (8) is arranged in the exhaust manifold (2), and a warning light (11) is turned on based on the clogging detection operation of the clogging sensor (7). A device for removing soot and dust from engine exhaust gas, characterized by
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1155146A JPH0323306A (en) | 1989-06-16 | 1989-06-16 | Eliminating device for soot and dust from engine exhaust gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1155146A JPH0323306A (en) | 1989-06-16 | 1989-06-16 | Eliminating device for soot and dust from engine exhaust gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0323306A true JPH0323306A (en) | 1991-01-31 |
Family
ID=15599543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1155146A Pending JPH0323306A (en) | 1989-06-16 | 1989-06-16 | Eliminating device for soot and dust from engine exhaust gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0323306A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6178837B1 (en) | 1996-12-25 | 2001-01-30 | Smc Kabushiki Kaisha | Electric actuator |
| JP2010096153A (en) * | 2008-10-20 | 2010-04-30 | Yanmar Co Ltd | Engine device for mounting on traveling vehicle |
| WO2010101018A1 (en) * | 2009-03-05 | 2010-09-10 | ヤンマー株式会社 | Engine device |
| JP2010203393A (en) * | 2009-03-05 | 2010-09-16 | Yanmar Co Ltd | Engine device |
| WO2013108879A1 (en) * | 2012-01-19 | 2013-07-25 | ヤンマー株式会社 | Engine device |
| JP2013148009A (en) * | 2012-01-19 | 2013-08-01 | Yanmar Co Ltd | Engine device |
| US9188089B2 (en) | 2011-12-27 | 2015-11-17 | Yanmar Co., Ltd. | Engine apparatus |
-
1989
- 1989-06-16 JP JP1155146A patent/JPH0323306A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6178837B1 (en) | 1996-12-25 | 2001-01-30 | Smc Kabushiki Kaisha | Electric actuator |
| JP2010096153A (en) * | 2008-10-20 | 2010-04-30 | Yanmar Co Ltd | Engine device for mounting on traveling vehicle |
| WO2010101018A1 (en) * | 2009-03-05 | 2010-09-10 | ヤンマー株式会社 | Engine device |
| JP2010203393A (en) * | 2009-03-05 | 2010-09-16 | Yanmar Co Ltd | Engine device |
| US9188089B2 (en) | 2011-12-27 | 2015-11-17 | Yanmar Co., Ltd. | Engine apparatus |
| WO2013108879A1 (en) * | 2012-01-19 | 2013-07-25 | ヤンマー株式会社 | Engine device |
| JP2013148009A (en) * | 2012-01-19 | 2013-08-01 | Yanmar Co Ltd | Engine device |
| US9222381B2 (en) | 2012-01-19 | 2015-12-29 | Yanmar Co., Ltd. | Engine device |
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