JPH05157011A - Diesel engine - Google Patents
Diesel engineInfo
- Publication number
- JPH05157011A JPH05157011A JP34884891A JP34884891A JPH05157011A JP H05157011 A JPH05157011 A JP H05157011A JP 34884891 A JP34884891 A JP 34884891A JP 34884891 A JP34884891 A JP 34884891A JP H05157011 A JPH05157011 A JP H05157011A
- Authority
- JP
- Japan
- Prior art keywords
- oxygen
- air
- diesel engine
- combustion chamber
- oxygen supply
- 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
- 239000001301 oxygen Substances 0.000 claims abstract description 79
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 79
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 78
- 238000002485 combustion reaction Methods 0.000 claims abstract description 39
- 239000000446 fuel Substances 0.000 claims abstract description 25
- 229910021536 Zeolite Inorganic materials 0.000 claims description 5
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 5
- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 5
- 239000010457 zeolite Substances 0.000 claims description 5
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 18
- 239000007789 gas Substances 0.000 abstract description 13
- 239000003981 vehicle Substances 0.000 abstract description 2
- 150000002926 oxygen Chemical class 0.000 abstract 1
- 239000000779 smoke Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000003756 stirring Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000002828 fuel tank Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000002000 scavenging effect Effects 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- VKJKEPKFPUWCAS-UHFFFAOYSA-M potassium chlorate Chemical compound [K+].[O-]Cl(=O)=O VKJKEPKFPUWCAS-UHFFFAOYSA-M 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はディーゼルエンジンの黒
煙対策及び窒素酸化物対策に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to measures against black smoke and nitrogen oxides in diesel engines.
【０００２】[0002]
【従来の技術】トラック等のディーゼルエンジンの排気
ガス中に含まれる窒素酸化物並び同エンジンが排出する
黒煙が人体に悪影響を与え大気汚染公害となるので、こ
れに対する種々の軽減対策が提案されている。例えば黒
煙対策としては、基本的に軽負荷時と重負荷時に於ける
供給空気や燃料噴射量の調整を行う手段（特開昭６０−
４７８４１号，同６２−２６７５１９号等）や、排気ガ
ス自体を浄化する手段（実開昭６０−３９７２３号，同
６０−７５６２５号，同６３−２００６１１号等）が知
られている。また窒素酸化物対策と同時に黒煙対策にも
なる手段として所謂ＥＧＲと称せられる排気ガス再循環
装置が知られている（特開昭６３−９４０３６号）。こ
れは排気ガスを再度燃焼室に戻し、完全燃焼させるもの
である。更に燃焼室自体の構造に改良を加えることも提
案されている（特開昭６３−１１７１１９号）。2. Description of the Related Art Nitrogen oxides contained in the exhaust gas of a diesel engine such as a truck and black smoke emitted from the engine adversely affect the human body and cause air pollution. Therefore, various mitigation measures have been proposed. ing. For example, as a measure against black smoke, basically, a means for adjusting the supply air and the fuel injection amount at the time of light load and heavy load (JP-A-60-
No. 47841, No. 62-267519, etc.) and a means for purifying the exhaust gas itself (No. 60-39723, No. 60-75625, No. 63-200611) are known. Further, an exhaust gas recirculation device called a so-called EGR is known as a means to prevent black smoke simultaneously with measures against nitrogen oxides (Japanese Patent Laid-Open No. 63-94036). This is to return the exhaust gas to the combustion chamber again and complete combustion. Further, it has been proposed to improve the structure of the combustion chamber itself (Japanese Patent Laid-Open No. 63-117119).
【０００３】前記した各手段は排気ガス浄化装置以外は
既存の車両搭載エンジンへの組み込みが容易に行うこと
ができなく、公害対策として即効性がない。また排気ガ
ス浄化装置も含め前記対策手段は必ずしも低廉には実現
されない。そこで本発明者は先にエンジンへの供給空気
を、ゼオライトを主成分とする窒素酸素分離フィルタを
通して富酸素空気とし、エンジン排気ガスの窒化酸化物
の減少せしめることを提案した（特願平１−２５９７７
３号）。Except for the exhaust gas purifying device, each of the above-mentioned means cannot be easily incorporated into an existing vehicle-mounted engine and is not immediately effective as a measure against pollution. Further, the countermeasures including the exhaust gas purifying device are not always realized at low cost. Therefore, the present inventor previously proposed that the air supplied to the engine be made into oxygen-rich air through a nitrogen-oxygen separation filter containing zeolite as a main component to reduce the nitriding oxide of engine exhaust gas (Japanese Patent Application No. 1- 25977
No. 3).
【０００４】[0004]
【発明が解決しようとする課題】前記の如くエンジンに
窒素含有量が少ない富酸素空気を供給すると、排気ガス
の窒素酸化物が減少し、且つ燃料の完全燃焼が達成され
て黒煙の排気も減少することが確認されたが、窒素酸素
分離フィルタの目づまりによって必ずしも常に所定の富
酸素空気が供給されず、エンジン出力が不安定となる虞
がある。特に車両の加速時に所定の酸素量が供給される
必要がある。またディーゼルエンジンは、燃焼用空気で
燃焼後ガスの掃気を行っており、せっかくの富酸素空気
が無駄に排出されてしまう。そこで本発明は、前記課題
を解決する手段を提案したものである。As described above, when oxygen-rich air having a low nitrogen content is supplied to the engine, the nitrogen oxides in the exhaust gas are reduced, and complete combustion of the fuel is achieved, so that the black smoke is also exhausted. Although it was confirmed that the amount of oxygen decreased, the predetermined oxygen-rich air was not always supplied due to clogging of the nitrogen-oxygen separation filter, and the engine output might become unstable. In particular, a certain amount of oxygen needs to be supplied when the vehicle accelerates. Further, the diesel engine scavenges the gas after combustion with the combustion air, so that the oxygen-rich air is wastefully exhausted. Therefore, the present invention proposes means for solving the above problems.
【０００５】[0005]
【課題を解決するための手段】本発明に係るディーゼル
エンジンは、車両に酸素供給部を設け、この酸素供給部
から燃焼室への供給空気に酸素または富酸素空気を供給
混入せしめると共に、前記酸素供給部にアクセル位置に
対応して酸素供給量をコントロールする制御部を付設し
てなることを特徴とするものであり、また酸素供給部か
ら燃焼室への供給燃料に酸素又は富酸素空気を混入せし
めてなることを特徴とするものであり、更には前記酸素
供給部の酸素源を、車両に搭載したゼオライトを主成分
とする窒素酸素分離フイルタと、エアポンプと、富酸素
空気タンクからなる酸素発生装置としたことを特徴とす
るものである。A diesel engine according to the present invention is provided with an oxygen supply unit in a vehicle, and oxygen or oxygen-rich air is supplied and mixed into the air supplied from the oxygen supply unit to the combustion chamber. It is characterized in that the supply unit is provided with a control unit for controlling the oxygen supply amount corresponding to the accelerator position, and oxygen or oxygen-rich air is mixed in the fuel supplied from the oxygen supply unit to the combustion chamber. Further, the oxygen source of the oxygen supply unit, further, a nitrogen-oxygen separation filter containing zeolite as a main component mounted on a vehicle, an air pump, and oxygen generation consisting of an oxygen-rich air tank. It is characterized by being used as a device.
【０００６】[0006]
【作用】燃焼用空気に、酸素又は富酸素空気を混入する
と、燃焼用空気の酸素含有比率が増加し、而もアクセル
位置即ち燃料供給量に対応して酸素濃度が変化するので
燃料の完全燃焼がなされ、排気ガス中の黒煙が減少し、
且つ窒素酸化物濃度も減少する。When oxygen or oxygen-rich air is mixed in the combustion air, the oxygen content ratio of the combustion air increases, and the oxygen concentration changes according to the accelerator position, that is, the fuel supply amount. The black smoke in the exhaust gas is reduced,
In addition, the nitrogen oxide concentration also decreases.
【０００７】また供給燃料に酸素又は富酸素空気を混入
せしめると、燃料と共に酸素が燃焼室に供給され、完全
燃焼が実現される。而も燃焼室の掃気には通常の空気が
使用されるため酸素の無駄がない。When oxygen or oxygen-rich air is mixed in the supplied fuel, oxygen is supplied to the combustion chamber together with the fuel, and complete combustion is realized. Moreover, since normal air is used for scavenging the combustion chamber, there is no waste of oxygen.
【０００８】[0008]
【実施例】次に本発明の実施例について説明する。 ＜第一実施例＞図１には本発明の第一実施例のブロック
図を示しており、この実施例に係るディーゼルエンジン
は、従前のディーゼルエンジンと同様に空気供給部（エ
アクリーナー）１，燃料供給部（燃料タンク２１，燃料
噴射ポンプ２２）２，エンジン本体（燃焼室）３を備
え、特に空気供給部１と燃焼室３との間の燃焼用空気の
供給路１１に酸素供給部４を付設したものである。EXAMPLES Next, examples of the present invention will be described. <First Embodiment> FIG. 1 shows a block diagram of a first embodiment of the present invention. A diesel engine according to this embodiment has an air supply portion (air cleaner) 1, as in the conventional diesel engine. A fuel supply unit (fuel tank 21, fuel injection pump 22) 2 and an engine body (combustion chamber) 3 are provided, and an oxygen supply unit 4 is provided in a combustion air supply passage 11 between the air supply unit 1 and the combustion chamber 3. Is attached.
【０００９】酸素供給部４は、酸素発生装置４１と制御
弁４２と、アクセルセンサ４３とからなり、酸素発生装
置４１は、エアポンプ４１１、フィルタ４１２、エアタ
ンク４１３で構成され、エアポンプ４１１は車両エンジ
ン又は車載バッテリーで駆動せしめられるもので、大気
を高圧空気としてフィルタ４１２に供給するものであ
り、フィルタ４１２はゼオライト（市販品：成分比 Ｓ
ｉＯ2，６８．７：ＡＩ2 Ｏ3 ，１１．６：Ｆｅ2 Ｏ
3 ，２．２：ＭｇＯ，０．５：ＣａＯ，２．７：Ｎａ2
Ｏ，１．３：Ｋ2 Ｏ，１．９：Ｐ2 Ｏ5 ，０．４：Ｐ
Ｈ，７．６）を１．５ｋｇに、塩素酸カリウム１５０ｇ
を水に溶いたものを加えて混合した後乾燥させ、これを
布で包み容器体に収納したもので、ゼオライトに窒素が
吸着し酸素を通過せしめることで、空気の窒素ー酸素分
離を行っている。エアタンク４１３は前記のフィルタ４
１２を通過した富酸素空気を所定の高圧で貯蔵しておく
ものである。また制御弁４２は供給路１１への富酸素空
気混入量を調整するもので、車両のアクセル位置を検知
するアクセルセンサ４３によってコントロールされる。The oxygen supply unit 4 comprises an oxygen generator 41, a control valve 42, and an accelerator sensor 43. The oxygen generator 41 is composed of an air pump 411, a filter 412, and an air tank 413. The air pump 411 is a vehicle engine or It is driven by an on-vehicle battery and supplies atmospheric air to the filter 412 as high-pressure air. The filter 412 is a zeolite (commercial product: component ratio S
iO 2 , 68.7: AI 2 O 3 , 11.6: Fe 2 O
3 , 2.2: MgO, 0.5: CaO, 2.7: Na 2
O, 1.3: K 2 O, 1.9: P 2 O 5 , 0.4: P
H, 7.6) to 1.5 kg, potassium chlorate 150 g
What was dissolved in water was added and mixed and then dried, and this was wrapped in a cloth and stored in a container body.By adsorbing nitrogen to zeolite and allowing oxygen to pass, nitrogen-oxygen separation of air was performed. There is. The air tank 413 is the filter 4 described above.
The oxygen-rich air that has passed through 12 is stored at a predetermined high pressure. The control valve 42 adjusts the amount of oxygen-rich air mixed in the supply passage 11, and is controlled by an accelerator sensor 43 that detects the accelerator position of the vehicle.
【００１０】而して酸素発生装置４１のエアタンク４１
３に予め富酸素空気を貯溜しておき、燃焼用空気の供給
路１１に適宜富酸素空気を供給混入することで、燃焼用
空気の酸素含有比率が高められ、燃焼室３での燃料の完
全燃焼が達成される。而も車両のアクセル位置に対応し
て富酸素空気の供給量を増加せしめるものであるから、
アクセルが踏み込まれて燃料供給量が増加すると、それ
に伴って富酸素供給量も増加するものであるから、アク
セルの踏み込みの変化即ち燃料供給量が変化しても、燃
焼室３では完全燃焼が達成されるものである。Thus, the air tank 41 of the oxygen generator 41
The oxygen-rich air is stored in advance in 3 and the oxygen-rich air is appropriately mixed into the combustion air supply passage 11, whereby the oxygen content ratio of the combustion air is increased, and the complete combustion of the fuel in the combustion chamber 3 is completed. Combustion is achieved. Moreover, since the supply amount of oxygen-rich air is increased according to the accelerator position of the vehicle,
When the accelerator is depressed and the fuel supply amount increases, the oxygen-rich supply amount also increases accordingly. Therefore, even if the accelerator depression changes, that is, the fuel supply amount changes, complete combustion is achieved in the combustion chamber 3. Is done.
【００１１】＜第二実施例＞図２には本発明の第二実施
例を示したもので、この実施例は、従前のディーゼルエ
ンジンに於ける燃料供給部２ａに酸素供給部５を付設し
たものである。酸素供給部５は酸素ボンベ５１と混入攪
拌部５２とが構成され、酸素ボンベ５１は純酸素を充填
したボンベで適宜な減圧弁を介して混入攪拌部５２に酸
素を供給する。混入攪拌部５２は燃料タンク２１と燃料
噴射ポンプ２２との間の燃料供給路に介設したもので、
燃料中に酸素を混入すると共に攪拌して酸素を小気泡状
態で燃料中に存在せしめるものである。<Second Embodiment> FIG. 2 shows a second embodiment of the present invention. In this embodiment, an oxygen supply section 5 is attached to a fuel supply section 2a in a conventional diesel engine. It is a thing. The oxygen supply unit 5 includes an oxygen cylinder 51 and a mixing and stirring unit 52. The oxygen cylinder 51 is a cylinder filled with pure oxygen and supplies oxygen to the mixing and stirring unit 52 via an appropriate pressure reducing valve. The mixing and stirring unit 52 is provided in the fuel supply path between the fuel tank 21 and the fuel injection pump 22,
Oxygen is mixed into the fuel and stirred to allow the oxygen to exist in the fuel in the form of small bubbles.
【００１２】而して前記の酸素混入燃料を燃料噴射ポン
プ２２で燃焼室３に供給すると、燃焼室３内での燃焼に
於ける酸素量が増加するので、燃料の完全燃焼が実現す
る。更にディーゼルエンジンに於いては、燃焼後の燃焼
室内の排気ガスを供給空気で掃気するものであるが、こ
の掃気空気には大気がそのまま使用でき、供給される酸
素は総て燃焼用に使用されるため、酸素の無駄がない利
点を有する。When the above-mentioned oxygen-mixed fuel is supplied to the combustion chamber 3 by the fuel injection pump 22, the amount of oxygen in combustion in the combustion chamber 3 increases, so that complete combustion of the fuel is realized. Further, in a diesel engine, the exhaust gas in the combustion chamber after combustion is scavenged by the supply air, but the atmosphere can be used as it is for this scavenging air, and all the oxygen supplied is used for combustion. Therefore, there is an advantage that oxygen is not wasted.
【００１３】[0013]
【発明の効果】以上のように本発明は、車両に酸素供給
部を設け、燃焼室への供給空気にアクセル位置と対応す
る量の酸素または富酸素空気を供給混入せしめたり、ま
たは燃焼室への供給燃料に酸素又は富酸素空気を混入せ
しめてなるディーゼルエンジンで、エンジン燃焼室での
燃料の完全燃焼が達成され、非常に簡便な状態で排気ガ
ス中の黒煙を減少せしめると共に、窒素酸化物濃度も減
少させることができたものである。As described above, according to the present invention, the vehicle is provided with the oxygen supply unit, and the supply air to the combustion chamber is supplied with the amount of oxygen or oxygen-rich air corresponding to the accelerator position, or the oxygen is supplied to the combustion chamber. This is a diesel engine in which oxygen or oxygen-rich air is mixed into the fuel supplied by the engine, complete combustion of the fuel in the engine combustion chamber is achieved, and black smoke in the exhaust gas is reduced in a very simple state, and nitrogen oxidation is also performed. The substance concentration could also be reduced.
【図１】本発明の第一実施例のブロック図である。FIG. 1 is a block diagram of a first embodiment of the present invention.
【図２】本発明の第二実施例のブロック図である。FIG. 2 is a block diagram of a second embodiment of the present invention.
１ 空気供給部 ２ 燃料供給部 ２１ 燃料タンク ２２ 燃料噴射ポンプ ３ 燃焼室 ４，５ 酸素供給部 ４１ 酸素発生装置 ４２ 制御弁 ４３ アクセルセンサ ５１ 酸素ボンベ ５２ 混入攪拌部 DESCRIPTION OF SYMBOLS 1 Air supply part 2 Fuel supply part 21 Fuel tank 22 Fuel injection pump 3 Combustion chamber 4,5 Oxygen supply part 41 Oxygen generator 42 Control valve 43 Accelerator sensor 51 Oxygen cylinder 52 Mixing stirring part
Claims (3)
空気を混入せしめる酸素供給部を設けると共に、前記酸
素供給部にアクセル位置に対応して酸素供給量をコント
ロールする制御部を付設してなることを特徴とするディ
ーゼルエンジン。1. An oxygen supply unit for mixing oxygen or oxygen-rich air into the supply air to the combustion chamber is provided, and a control unit for controlling the oxygen supply amount corresponding to the accelerator position is attached to the oxygen supply unit. Diesel engine characterized by becoming.
気を混入せしめる酸素供給部を設けてなることを特徴と
するディーゼルエンジン。2. A diesel engine comprising an oxygen supply unit for mixing oxygen or oxygen-rich air into the fuel supplied to the combustion chamber.
ルエンジンに於いて、車両にゼオライトを主成分とする
窒素酸素分離フイルタと、エアポンプと、富酸素空気タ
ンクからなる酸素発生装置を搭載し、酸素供給部の酸素
源としたことを特徴とするディーゼルエンジン。3. The diesel engine according to claim 1 or 2, wherein a vehicle is equipped with a nitrogen-oxygen separation filter containing zeolite as a main component, an air pump, and an oxygen generator comprising an oxygen-rich air tank. The diesel engine is characterized by being used as an oxygen source for the oxygen supply section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34884891A JPH05157011A (en) | 1991-12-05 | 1991-12-05 | Diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34884891A JPH05157011A (en) | 1991-12-05 | 1991-12-05 | Diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05157011A true JPH05157011A (en) | 1993-06-22 |
Family
ID=18399790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34884891A Pending JPH05157011A (en) | 1991-12-05 | 1991-12-05 | Diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05157011A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2434618A (en) * | 2006-01-26 | 2007-08-01 | Otwoempower Corp | Simultaneous combustion of liquid and gaseous fuels in a compression-ignition engine |
| JP2008513670A (en) * | 2004-09-20 | 2008-05-01 | コリア エンバイアンメント テクノロジー カンパニー、リミテッド | Low fuel consumption and low pollution combustion system of automobile engine fuel and oxygen mixed supply method |
-
1991
- 1991-12-05 JP JP34884891A patent/JPH05157011A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008513670A (en) * | 2004-09-20 | 2008-05-01 | コリア エンバイアンメント テクノロジー カンパニー、リミテッド | Low fuel consumption and low pollution combustion system of automobile engine fuel and oxygen mixed supply method |
| GB2434618A (en) * | 2006-01-26 | 2007-08-01 | Otwoempower Corp | Simultaneous combustion of liquid and gaseous fuels in a compression-ignition engine |
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