JPH01170752A - Exhaust smoke reducing system of diesel engine for car - Google Patents
Exhaust smoke reducing system of diesel engine for carInfo
- Publication number
- JPH01170752A JPH01170752A JP33353687A JP33353687A JPH01170752A JP H01170752 A JPH01170752 A JP H01170752A JP 33353687 A JP33353687 A JP 33353687A JP 33353687 A JP33353687 A JP 33353687A JP H01170752 A JPH01170752 A JP H01170752A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- cylinder
- injected
- nozzle
- diesel engine
- 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
- 239000000779 smoke Substances 0.000 title claims abstract description 11
- 239000000446 fuel Substances 0.000 claims abstract description 68
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000001301 oxygen Substances 0.000 claims abstract description 14
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 14
- 238000002347 injection Methods 0.000 claims abstract description 13
- 239000007924 injection Substances 0.000 claims abstract description 13
- 238000002485 combustion reaction Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 6
- 239000002828 fuel tank Substances 0.000 abstract description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 abstract description 2
- 239000003054 catalyst Substances 0.000 abstract description 2
- 239000001257 hydrogen Substances 0.000 abstract description 2
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 2
- 229910052759 nickel Inorganic materials 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002407 reforming Methods 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
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、燃料の一部を改質することにより自動車用デ
ィーゼル機関の排煙を低減させる方式に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a system for reducing exhaust smoke from an automobile diesel engine by reforming a portion of the fuel.
ディーゼル機関においては、燃料の持つエネルギを効率
よく仕事に転換させるために、燃料と吸入空気の混合気
をできるだけ完全にかつ速やかに作り、燃焼室内の空気
によってできるだけ多量の燃料を完全燃焼させることが
必要であるが、軽油を燃料とする限り多かれ少なかれ未
燃焼生成物が生じ、これが黒煙となって排気される。In a diesel engine, in order to efficiently convert the energy of the fuel into work, it is necessary to create a mixture of fuel and intake air as completely and quickly as possible, and to completely burn as much fuel as possible using the air in the combustion chamber. Although it is necessary, as long as light oil is used as fuel, more or less unburned products will be produced, which will be exhausted as black smoke.
しかしながら排煙を出さないという観点からみれば、従
来、メタノールを燃料としたメタノールディーゼル機関
においては、メタノールが含酸素軽質であるために、排
煙の出ないディーゼル機関が実現されている。However, from the viewpoint of not emitting exhaust smoke, conventional methanol diesel engines that use methanol as fuel have been realized because methanol is light and contains oxygen.
しかしながら、メタノールはスタンドにおいて販売され
ておらず、メタノールの供給に問題を有し、またコスト
的にも問題を有している。However, methanol is not sold at stands, and there are problems in the supply of methanol, and there are also problems in terms of cost.
本発明は上記問題を解決するものであって、軽油等の供
給の容易な燃料を用いて排煙を低減できる自動車用ディ
ーゼル機関の排煙低減方式を提供することを目的とする
。The present invention is intended to solve the above-mentioned problems, and an object of the present invention is to provide a method for reducing exhaust smoke from an automobile diesel engine, which can reduce exhaust smoke using easily supplied fuel such as light oil.
そのために本発明の自動車用ディーゼル機関の排煙低減
方式は、燃料をシリンダ内に噴射する燃料噴射弁と、含
酸素燃料をシリンダ内に噴射する副ノズルとを備え、該
含酸素燃料を燃焼後期に噴射することを特徴している。To this end, the exhaust gas reduction method for an automobile diesel engine according to the present invention includes a fuel injection valve that injects fuel into a cylinder, and a sub-nozzle that injects oxygen-containing fuel into the cylinder. It is characterized by being injected into the air.
具体的には、燃料の一部を燃料改質器により改質させて
含酸素燃料を噴射する方式や、メタノール等の含酸素燃
料を別の燃料タンクに用意し、この燃料を燃焼後半に噴
射するものである。Specifically, methods include methods in which a portion of the fuel is reformed using a fuel reformer and then injected as oxygen-containing fuel, or methods in which oxygen-containing fuel such as methanol is prepared in a separate fuel tank and this fuel is injected during the latter half of combustion. It is something to do.
本発明においては例えば第１図に示すように、燃料噴射
ノズル３から噴射された燃料は、シリンダ内で燃焼され
るが、燃料と空気の混合が十分に行われないためカーボ
ンが生成されるが、燃焼後期に含酸素ガス質の燃料を副
ノズル４からシリンダ内に噴射し、シリンダ内で爆発さ
せこの爆発エネルギにより、シリンダ内での燃料と空気
の一層の混合を促進させ、燃え残ったカーボーンを燃焼
して排煙を低減させる。In the present invention, for example, as shown in FIG. 1, the fuel injected from the fuel injection nozzle 3 is combusted in the cylinder, but since the fuel and air are not mixed sufficiently, carbon is generated. In the late stage of combustion, oxygen-containing gaseous fuel is injected into the cylinder from the sub nozzle 4 and exploded inside the cylinder.The explosion energy promotes further mixing of fuel and air inside the cylinder, and the unburned carbon is removed. burns to reduce smoke emissions.
〔実施例〕 以下、本発明の実施例を図面を参照しつつ説明する。〔Example〕 Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明の自動車用ディーゼル機関の排煙低減方
式の１実施例を示す構成図、第２図は本発明の詳細な説
明するための図である。図中、１はエンジン、２はシリ
ンダヘッド、３は燃料噴射ノズル、４は副ノズル、５は
燃料タンク、６は空気タンク、７は燃料改質器を示す。FIG. 1 is a block diagram showing one embodiment of the exhaust gas reduction system for an automobile diesel engine according to the present invention, and FIG. 2 is a diagram for explaining the present invention in detail. In the figure, 1 is an engine, 2 is a cylinder head, 3 is a fuel injection nozzle, 4 is an auxiliary nozzle, 5 is a fuel tank, 6 is an air tank, and 7 is a fuel reformer.
第１図において、エンジン１のシリンダへラド２には、
燃料噴射ノズル３と副ノズル４が設けられ、燃料タンク
５からの燃料が燃料噴射ノズル３からシリンダ内に噴射
される。また、燃料タンク５からの燃料の一部と空気タ
ンク６のエアは、燃料改質器７に送られ、ここで燃料の
部分酸化を行い、改質された混合ガスを燃焼後期に前記
副ノズル４からシリンダ内に噴射する。In FIG. 1, the cylinder head 2 of the engine 1 has the following:
A fuel injection nozzle 3 and a sub-nozzle 4 are provided, and fuel from a fuel tank 5 is injected into the cylinder from the fuel injection nozzle 3. A part of the fuel from the fuel tank 5 and the air from the air tank 6 are sent to a fuel reformer 7, where the fuel is partially oxidized, and the reformed mixed gas is sent to the sub nozzle in the late stage of combustion. Inject into the cylinder from 4.
上記燃料改質器７においては、ニッケル系触媒を用いて
軽油を部分酸化反応により分解する。このときの反応式
は、
Ｃｎ Ｈ１，ｌ ” Ｏｌ →ｎＣｏ
＋ ｎ Ｈ２生成した一酸化炭素と水素の混合ガスを副
ノズル４からシリンダ内に噴射する。In the fuel reformer 7, light oil is decomposed by a partial oxidation reaction using a nickel-based catalyst. The reaction formula at this time is Cn H1,l”Ol →nCo
+ n H2 The generated mixed gas of carbon monoxide and hydrogen is injected into the cylinder from the sub nozzle 4.
第２図はシリンダ内の燃焼状態を示している。FIG. 2 shows the combustion state inside the cylinder.
燃料噴射ノズル３から噴射された燃料が、シリンダ内で
燃焼される際、燃料と空気の混合が十分に行われないた
めカーボンが生成されるが、本発明においては、燃焼後
期に含酸素ガス質の燃料を副ノズル４からシリンダ内に
噴射し、シリンダ内で爆発させこの爆発エネルギにより
、シリンダ内での燃料と空気の一層の混合を促進させ、
燃え残ったカーボーンを燃焼して排煙を低減させるもの
である。When the fuel injected from the fuel injection nozzle 3 is combusted in the cylinder, carbon is generated because the fuel and air are not sufficiently mixed. However, in the present invention, carbon is generated in the late stage of combustion. of fuel is injected into the cylinder from the sub-nozzle 4 and exploded within the cylinder, and this explosion energy promotes further mixing of fuel and air within the cylinder,
The remaining carbon is burned to reduce smoke emissions.
なお、本発明は上記実施例に限定されるものではなく種
々の変更が可能である。例えば上記実施例においては、
燃料の一部を燃料改質器で含酸素ガス質の燃料に改質し
ているが、メタノール等の含酸素燃料を別の燃料タンク
に用意し、この燃料を燃焼後半に噴射するようにしても
よい。Note that the present invention is not limited to the above-mentioned embodiments, and various modifications can be made. For example, in the above embodiment,
A part of the fuel is reformed into oxygen-containing gaseous fuel using a fuel reformer, but oxygen-containing fuel such as methanol is prepared in a separate fuel tank and this fuel is injected in the latter half of combustion. Good too.
また、改質燃料の噴射をエンジン高負荷時にのみ噴射す
るように制御してもよい。Furthermore, the injection of the reformed fuel may be controlled so as to be injected only when the engine is under high load.
以上のように本発明によれば、燃料をシリンダ内に噴射
する燃料噴射弁と、含酸素燃料をシリンダ内に噴射する
副ノズルとを備え、該含酸素燃料を燃焼後期に噴射する
ことにより、軽油等の供給の容易な燃料を用いてディー
ゼル機関の排煙を低減できる。As described above, the present invention includes a fuel injection valve that injects fuel into a cylinder and a sub nozzle that injects oxygen-containing fuel into the cylinder, and injects the oxygen-containing fuel in the late stage of combustion. Exhaust smoke from diesel engines can be reduced by using easily available fuels such as light oil.
第１図は本発明の自動車用ディーゼル機関の排煙低減方
式の１実施例を示す構成図、第２図は本発明の詳細な説
明するための図である。
１・・・エンジン、２・・・シリンダヘッド、３・・・
燃料噴射ノズル、４・・・副ノズル、５・・・燃料タン
ク、６・・・空気タンク、７・・・燃料改質器。FIG. 1 is a block diagram showing one embodiment of the exhaust gas reduction system for an automobile diesel engine according to the present invention, and FIG. 2 is a diagram for explaining the present invention in detail. 1...Engine, 2...Cylinder head, 3...
Fuel injection nozzle, 4... Sub-nozzle, 5... Fuel tank, 6... Air tank, 7... Fuel reformer.
Claims (2)
素燃料をシリンダ内に噴射する副ノズルとを備え、該含
酸素燃料を燃焼後期に噴射することを特徴とする自動車
用ディーゼル機関の排煙低減方式。(1) An automotive diesel engine comprising a fuel injection valve that injects fuel into a cylinder and a sub-nozzle that injects oxygen-containing fuel into the cylinder, and injects the oxygen-containing fuel in the late stage of combustion. Smoke reduction method.
燃料を噴射することを特徴とする特許請求の範囲第１項
記載の自動車用ディーゼル機関の排煙低減方式。(2) The exhaust gas reduction method for an automobile diesel engine according to claim 1, characterized in that part of the fuel is reformed by a fuel reformer and oxygen-containing fuel is injected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33353687A JPH01170752A (en) | 1987-12-25 | 1987-12-25 | Exhaust smoke reducing system of diesel engine for car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33353687A JPH01170752A (en) | 1987-12-25 | 1987-12-25 | Exhaust smoke reducing system of diesel engine for car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01170752A true JPH01170752A (en) | 1989-07-05 |
Family
ID=18267145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33353687A Pending JPH01170752A (en) | 1987-12-25 | 1987-12-25 | Exhaust smoke reducing system of diesel engine for car |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01170752A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7448348B2 (en) | 2003-10-21 | 2008-11-11 | Toyota Jidosha Kabushiki Kaisha | Hydrogen-fueled internal combustion engine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5236212A (en) * | 1975-07-11 | 1977-03-19 | Richter Paul A | Fluid actuating device |
| JPS55112821A (en) * | 1979-01-13 | 1980-09-01 | Pischinger Franz | Method and device for running airrcompression selffignition internal combustion engine for liquid fuel |
| JPS60184921A (en) * | 1984-03-02 | 1985-09-20 | Nissan Motor Co Ltd | Heat-insulated diesel engine |
-
1987
- 1987-12-25 JP JP33353687A patent/JPH01170752A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5236212A (en) * | 1975-07-11 | 1977-03-19 | Richter Paul A | Fluid actuating device |
| JPS55112821A (en) * | 1979-01-13 | 1980-09-01 | Pischinger Franz | Method and device for running airrcompression selffignition internal combustion engine for liquid fuel |
| JPS60184921A (en) * | 1984-03-02 | 1985-09-20 | Nissan Motor Co Ltd | Heat-insulated diesel engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7448348B2 (en) | 2003-10-21 | 2008-11-11 | Toyota Jidosha Kabushiki Kaisha | Hydrogen-fueled internal combustion engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6655130B1 (en) | System and controls for near zero cold start tailpipe emissions in internal combustion engines | |
| JP5192045B2 (en) | Engine system and method for burning fuel in a compression ignition engine substantially without generating NOx | |
| US5297515A (en) | Fuel supply systems for engines and combustion processes therefor | |
| US5178119A (en) | Combustion process and fuel supply system for engines | |
| US6405720B1 (en) | Natural gas powered engine | |
| US5007381A (en) | Method to decrease black smoke of diesel | |
| JP3031712B2 (en) | Operation of internal combustion engine | |
| US7188587B1 (en) | Methods for operating a compression ignition engine | |
| US4004413A (en) | Combustible mixture supply system | |
| US9482192B2 (en) | Stable combustion in spark-ignited lean-burn engine | |
| JPS58584B2 (en) | ``Ninenkikan'' | |
| US7047909B1 (en) | Methods of operating a compression ignition engine and a vehicle system | |
| JP2009216041A (en) | Control device for internal combustion engine | |
| KR950002348B1 (en) | Method and composition for providing an improved combustion in process of combustion containing hydrocarbon compounds | |
| CA2133572C (en) | Engine nox reduction system | |
| ITMI20011809A1 (en) | DEVICE TO TREAT EXHAUST GAS | |
| US20040144030A1 (en) | Torch ignited partial oxidation fuel reformer and method of operating the same | |
| AU2001249282A1 (en) | Gas powered engine having improved emissions | |
| US20080256933A1 (en) | Internal Combustion Engine Having On-Board Electrolyzer And Method Of Using Same | |
| JPH01170752A (en) | Exhaust smoke reducing system of diesel engine for car | |
| AU3035989A (en) | Method for improving combustion in combustion engines | |
| JPH10205398A (en) | Ignitability improving method for fuel in premixture compression ignition engine | |
| RU2154185C1 (en) | Environment-oriented method for heat generation | |
| JPS6037292B2 (en) | gas engine | |
| Chehroudi | Homogeneous charge compression ignition (HCCI) engine |