JPH0286915A - Exhaust gas purification device for hydrogen fueled engine - Google Patents
Exhaust gas purification device for hydrogen fueled engineInfo
- Publication number
- JPH0286915A JPH0286915A JP23785988A JP23785988A JPH0286915A JP H0286915 A JPH0286915 A JP H0286915A JP 23785988 A JP23785988 A JP 23785988A JP 23785988 A JP23785988 A JP 23785988A JP H0286915 A JPH0286915 A JP H0286915A
- Authority
- JP
- Japan
- Prior art keywords
- hydrogen
- exhaust gas
- nitrogen oxides
- amount
- nitrogen oxide
- 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
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 239000001257 hydrogen Substances 0.000 title claims abstract description 64
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 64
- 239000007789 gas Substances 0.000 title claims abstract description 50
- 238000000746 purification Methods 0.000 title claims description 8
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims abstract description 133
- 239000000446 fuel Substances 0.000 claims abstract description 5
- 238000001514 detection method Methods 0.000 claims description 7
- 239000003054 catalyst Substances 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract 1
- 230000003197 catalytic effect Effects 0.000 description 7
- 238000006722 reduction reaction Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 150000004681 metal hydrides Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010959 steel 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
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
-
- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/04—Adding substances to exhaust gases the substance being hydrogen
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は水素エンジンの排ガス浄化装置に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an exhaust gas purification device for a hydrogen engine.
［従来技術及び課題］
水素エンジンの排ガス浄化装置としては、排気管の途中
に触媒コンバータを設け、酸化雰囲気（空燃比が大きく
酸素が多く残っている状態）で排気ガス中の窒素酸化物
（ＮＯＸ ）を還元することが考えられるが、窒素酸化
物（ＮＯｘ ）の除去効率が悪かった。[Prior art and issues] As an exhaust gas purification device for a hydrogen engine, a catalytic converter is installed in the middle of the exhaust pipe, and nitrogen oxides (NOx ), but the removal efficiency of nitrogen oxides (NOx) was poor.
この発明の目的は、排気ガス中の窒素酸化物（ＮＯＸ
＞の除去効率がよい水素エンジンの排ガス浄化装置を提
供することにある。The purpose of this invention is to eliminate nitrogen oxides (NOX) in exhaust gas.
An object of the present invention is to provide an exhaust gas purification device for a hydrogen engine that has high removal efficiency.
［課題を解決するための手段コ
この発明は、水素を貯蔵する水素貯蔵手段からの水素を
燃料として駆動する水素エンジンにおいて、前記水素エ
ンジンの排気カス中の窒素酸化物の量を検出する窒素酸
化物検出手段と、前記窒素酸化物検出手段による排気ガ
ス中の窒素酸化物の量に応じて排気ガスに前記水素貯蔵
手段の水素を所定量混合させる水素混合手段と、前記水
素混合手段により混合された水素により排気ガス中の窒
素酸化物を還元させる還元手段とを備えた水素エンジン
の排ガス浄化装置をその要旨とするものである。[Means for Solving the Problems] This invention provides a nitrogen oxidation system for detecting the amount of nitrogen oxides in the exhaust gas of the hydrogen engine in a hydrogen engine that is driven using hydrogen from a hydrogen storage means for storing hydrogen as fuel. hydrogen mixing means for mixing a predetermined amount of hydrogen in the hydrogen storage means with the exhaust gas according to the amount of nitrogen oxides in the exhaust gas detected by the nitrogen oxide detection means; The gist of the present invention is to provide an exhaust gas purification device for a hydrogen engine, which is equipped with a reducing means for reducing nitrogen oxides in exhaust gas using hydrogen.
「作用］
窒素酸化物検出手段による水素エンジンの排気ガス中の
窒素酸化物の量に応じて、水素混合手段が排気ガスに水
素貯蔵手段の水素を所定量混合させ、還元手段がその水
素により排気ガス中の窒素酸化物を還元させる。"Function" The hydrogen mixing means mixes a predetermined amount of hydrogen from the hydrogen storage means with the exhaust gas according to the amount of nitrogen oxides in the exhaust gas of the hydrogen engine detected by the nitrogen oxide detection means, and the reducing means uses the hydrogen to reduce the exhaust gas. Reduces nitrogen oxides in gas.
その結果、水素エンジンの排気ガス中の窒素酸化物の量
が低下する。As a result, the amount of nitrogen oxides in the hydrogen engine exhaust gas is reduced.
［実施例］
以下、この発明を具体化した一実施例を図面に従って説
明する。[Example] An example embodying the present invention will be described below with reference to the drawings.
図に示すように、水素貯蔵手段としてのＭＨ全タンクに
は水素を水素吸蔵合金の化合物として貯蔵した金属水素
化物（Ｍ ｌ−１＞が内蔵され、加熱することにより水
素ガスを発生させることができるようになっている。水
素エンジン２は前記ＭＨタンク１から供給される水素に
て駆動して、窒素酸化物（ＮＯｘ）を含んだガス（排気
ガス）を排出する。As shown in the figure, all MH tanks as hydrogen storage means contain a metal hydride (M l-1) that stores hydrogen as a hydrogen storage alloy compound, and can generate hydrogen gas by heating. The hydrogen engine 2 is driven by hydrogen supplied from the MH tank 1 and discharges gas (exhaust gas) containing nitrogen oxides (NOx).
排気管３には前記ＭＨタンク１か流量調整弁４を介して
連結され、この弁４の制御により排気ガスとＭＨ全タン
クからの水素を所定の割合いで混合させることができる
。The MH tank 1 is connected to the exhaust pipe 3 via a flow rate regulating valve 4, and by controlling this valve 4, the exhaust gas and hydrogen from all the MH tanks can be mixed at a predetermined ratio.
排気管３には還元手段としての触媒コンバータ５が配設
され、この触媒コンバータ５には前記ＭＨタンク１から
の水素が混合された排気ガスが供給されるようになって
いる。そして、次にような還元反応が起こる。A catalytic converter 5 as a reducing means is disposed in the exhaust pipe 3, and the exhaust gas mixed with hydrogen from the MH tank 1 is supplied to the catalytic converter 5. Then, the following reduction reaction occurs.
２ＮＯ，、、＋２ｌ−（２→Ｎ２＋２目、Ｏこのとき、
還元触媒としては、Ｒｈ／γ−Ａｇ２Ｏ３必るいはＦｅ
２ ｏ３ ＣｕＯＡ、Ｉ）２０３が使用される。2NO, , +2l-(2→N2+2nd, O At this time,
As a reduction catalyst, Rh/γ-Ag2O3 or Fe
2 o3 CuOA, I) 203 is used.
又、前記水素エンジン２の出口付近の排気管３には窒素
酸化物検出手段としてのＮＯｘセンサ６が配設され、本
実施例では表面制御型半導体センサーを使用している。Further, a NOx sensor 6 as nitrogen oxide detection means is disposed in the exhaust pipe 3 near the outlet of the hydrogen engine 2, and in this embodiment, a surface control type semiconductor sensor is used.
そして、同センサ６にて排気ガス中の窒素酸化物のｆｆ
１（Ｃｉ度）が検出される。Then, the same sensor 6 detects the ff of nitrogen oxide in the exhaust gas.
1 (Ci degree) is detected.
又、排気管３には温度センサ７が取付けられ、同センサ
７にて排気ガスの温度か検出される。Further, a temperature sensor 7 is attached to the exhaust pipe 3, and the temperature of the exhaust gas is detected by the sensor 7.
水素混合手段としてのコンピュータ８は、前記ＮＯｘセ
ンセンサび温度センサ７からの検出信号を入力して、排
気ガス中の窒素酸化物のｆｆ１（１度）及び温度を検知
する。又、コンピュータ８は、その排気ガス中の窒素酸
化物の最（８度）及び温度に基づき、前記流量調整弁４
の開度を制御して水素の排気ガスへの混合量を制御して
いる。A computer 8 serving as a hydrogen mixing means inputs detection signals from the NOx sensor and temperature sensor 7 and detects ff1 (1 degree) and temperature of nitrogen oxides in the exhaust gas. Further, the computer 8 adjusts the flow rate adjustment valve 4 based on the maximum (8 degrees) and temperature of nitrogen oxides in the exhaust gas.
The amount of hydrogen mixed into the exhaust gas is controlled by controlling the degree of opening.
次に、このように構成した水素エンジンの排ガス浄化装
置の作用を説明する。Next, the operation of the hydrogen engine exhaust gas purification device configured as described above will be explained.
水素エンジン２はＭＨ全タンクからの水素を燃料として
駆動して窒素酸化物（ＮＯＸ）を含んだ排気ガスを排出
する。コンピュータ８はその排気ガスの窒素酸化物のｆ
ｆｌ＜１度）をＮＯｘセンサ６がらの信号にて検知する
とともに、排気ガスの温度を温度センサ７からの信号に
より検知する。The hydrogen engine 2 is driven using hydrogen from all MH tanks as fuel and discharges exhaust gas containing nitrogen oxides (NOX). The computer 8 calculates f of nitrogen oxides in the exhaust gas.
fl<1 degree) is detected by the signal from the NOx sensor 6, and the temperature of the exhaust gas is detected by the signal from the temperature sensor 7.
コンピュータ８は排気ガス中の窒素酸化物の量（濃度）
及び温度に応じて、排気ガスへの水素の供給量を決定す
る。そして、コンピュータ８は流量調整弁４を制御して
その供給量となるように水素を供給する。Computer 8 measures the amount (concentration) of nitrogen oxide in the exhaust gas.
and the amount of hydrogen to be supplied to the exhaust gas depending on the temperature. Then, the computer 8 controls the flow rate regulating valve 4 to supply hydrogen at the specified supply amount.
触媒コンバータ５においては、水素と排気ガスとの混合
気体が通過する間に、排気ガス中の窒素酸化物が水素に
て還元され、排出される。In the catalytic converter 5, nitrogen oxides in the exhaust gas are reduced with hydrogen and discharged while the mixed gas of hydrogen and exhaust gas passes through the catalytic converter 5.
このように本実施例においては、水素にて水素エンジン
２の排気カス中の窒素酸化物を還元することにより還元
雰囲気下で窒素酸化物を還元でき窒素酸化物の量（濃度
）を確実に低減することができる。このとぎ、燃料であ
る水素の一部を使用しているので、水素発生装置を設置
する必要がなく、還元反応用の触媒コンバータ５を設置
するだけでよい。In this example, by reducing nitrogen oxides in the exhaust residue of the hydrogen engine 2 with hydrogen, the nitrogen oxides can be reduced in a reducing atmosphere and the amount (concentration) of nitrogen oxides can be reliably reduced. can do. At this point, since part of the hydrogen as fuel is used, there is no need to install a hydrogen generator, and only a catalytic converter 5 for the reduction reaction is installed.
尚、この発明は上記実施例に限定されるものではなく、
上記実施例ではＮＯＸゼン１す６及び温度セン４ノ゛７
により水素の排気カスへの供給量を決めていたが、ＮＯ
ｘセン゛リ−６による排気ガスの窒素酸化物の量（濃度
）のみにより決定してもよい。Note that this invention is not limited to the above embodiments,
In the above embodiment, NOx sensor 1-6 and temperature sensor 4-7
The amount of hydrogen supplied to the exhaust gas was determined by
It may be determined only by the amount (concentration) of nitrogen oxides in the exhaust gas determined by the x sensor 6.
［発明の効果］
以上詳述したようにこの発明によれば、排気ガス中の窒
素酸化物（ＮＯＸ ＞の除去効率がよいものとすること
ができる優れた効果を発揮する。[Effects of the Invention] As described in detail above, the present invention exhibits an excellent effect of improving the efficiency of removing nitrogen oxides (NOX) from exhaust gas.
図はこの発明を具体化した水素エンジンの排ガス浄化装
置を示す図である。
１は水素貯蔵手段としてのＭＨタンク、２は水素エンジ
ン、５は還元手段としての還元触媒コンバータ、６は窒
素酸化物検出手段としてのＮＯＸセンサ、８は水素混合
手段としてのコンピュータ。
特許出願人 株式会社 豊田自動織機製作所新日本
製鐵 株式会社The figure shows an exhaust gas purification device for a hydrogen engine embodying the present invention. 1 is an MH tank as a hydrogen storage means, 2 is a hydrogen engine, 5 is a reduction catalytic converter as a reduction means, 6 is a NOX sensor as a nitrogen oxide detection means, and 8 is a computer as a hydrogen mixing means. Patent applicant Toyota Industries Corporation Nippon Steel Corporation
Claims (1)
て駆動する水素エンジンにおいて、 前記水素エンジンの排気ガス中の窒素酸化物の量を検出
する窒素酸化物検出手段と、 前記窒素酸化物検出手段による排気ガス中の窒素酸化物
の量に応じて排気ガスに前記水素貯蔵手段の水素を所定
量混合させる水素混合手段と、前記水素混合手段により
混合された水素により排気ガス中の窒素酸化物を還元さ
せる還元手段とを備えた水素エンジンの排ガス浄化装置
。[Scope of Claims] 1. In a hydrogen engine driven using hydrogen from a hydrogen storage means for storing hydrogen as fuel, nitrogen oxide detection means for detecting the amount of nitrogen oxides in exhaust gas of the hydrogen engine; hydrogen mixing means for mixing a predetermined amount of hydrogen from the hydrogen storage means into the exhaust gas according to the amount of nitrogen oxides in the exhaust gas detected by the nitrogen oxide detection means; An exhaust gas purification device for a hydrogen engine, comprising a reducing means for reducing nitrogen oxides in the hydrogen engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23785988A JPH0286915A (en) | 1988-09-22 | 1988-09-22 | Exhaust gas purification device for hydrogen fueled engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23785988A JPH0286915A (en) | 1988-09-22 | 1988-09-22 | Exhaust gas purification device for hydrogen fueled engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0286915A true JPH0286915A (en) | 1990-03-27 |
Family
ID=17021473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23785988A Pending JPH0286915A (en) | 1988-09-22 | 1988-09-22 | Exhaust gas purification device for hydrogen fueled engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0286915A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998002648A1 (en) * | 1996-07-16 | 1998-01-22 | Lynntech, Inc. | Method and apparatus for injecting hydrogen into a catalytic converter |
| US6036827A (en) * | 1997-06-27 | 2000-03-14 | Lynntech, Inc. | Electrolyzer |
| KR20030002468A (en) * | 2001-06-29 | 2003-01-09 | 현대자동차주식회사 | A fuel cell vehicle for exhausting hydrogen gas generated of cell stacks |
| WO2003062005A1 (en) * | 2002-01-22 | 2003-07-31 | Bayerische Motoren Werke | Motor vehicle comprising a cryotank |
| JP2007303321A (en) * | 2006-05-10 | 2007-11-22 | Suzuki Motor Corp | Exhaust gas purifying system of hydrogen fueled engine |
| DE10332047B4 (en) * | 2003-07-11 | 2015-10-22 | Bayerische Motoren Werke Aktiengesellschaft | Catalysed exhaust gas purification process for the reduction of nitrogen oxides in excess of air on a hydrogen-rubbed internal combustion engine and device for carrying out the method |
| WO2023182079A1 (en) * | 2022-03-25 | 2023-09-28 | 日野自動車株式会社 | Treatment device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6338618B2 (en) * | 1983-12-27 | 1988-08-01 | Matsushita Electric Ind Co Ltd |
-
1988
- 1988-09-22 JP JP23785988A patent/JPH0286915A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6338618B2 (en) * | 1983-12-27 | 1988-08-01 | Matsushita Electric Ind Co Ltd |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998002648A1 (en) * | 1996-07-16 | 1998-01-22 | Lynntech, Inc. | Method and apparatus for injecting hydrogen into a catalytic converter |
| US6036827A (en) * | 1997-06-27 | 2000-03-14 | Lynntech, Inc. | Electrolyzer |
| KR20030002468A (en) * | 2001-06-29 | 2003-01-09 | 현대자동차주식회사 | A fuel cell vehicle for exhausting hydrogen gas generated of cell stacks |
| WO2003062005A1 (en) * | 2002-01-22 | 2003-07-31 | Bayerische Motoren Werke | Motor vehicle comprising a cryotank |
| US7131265B2 (en) | 2002-01-22 | 2006-11-07 | Bayerische Motoren Werke Aktiengesellschaft | Motor vehicle with a cryotank |
| DE10332047B4 (en) * | 2003-07-11 | 2015-10-22 | Bayerische Motoren Werke Aktiengesellschaft | Catalysed exhaust gas purification process for the reduction of nitrogen oxides in excess of air on a hydrogen-rubbed internal combustion engine and device for carrying out the method |
| JP2007303321A (en) * | 2006-05-10 | 2007-11-22 | Suzuki Motor Corp | Exhaust gas purifying system of hydrogen fueled engine |
| JP4711233B2 (en) * | 2006-05-10 | 2011-06-29 | スズキ株式会社 | Exhaust gas purification system for hydrogen engine |
| WO2023182079A1 (en) * | 2022-03-25 | 2023-09-28 | 日野自動車株式会社 | Treatment device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5021227A (en) | Method of removing nitrogen oxides in exhaust gases from a diesel engine | |
| US5921076A (en) | Process and apparatus for reducing nitrogen oxides in engine emissions | |
| JP2004197746A (en) | Advanced ammonia feed control for selective catalytic reduction | |
| WO2006022213A1 (en) | Exhaust gas purification apparatus | |
| US4820492A (en) | Apparatus for denitration | |
| US8490389B2 (en) | Exhaust gas purification apparatus for engine | |
| US8429901B2 (en) | Exhaust gas purification device | |
| JPH0286915A (en) | Exhaust gas purification device for hydrogen fueled engine | |
| EP1336731A1 (en) | Exhaust gas purifying catalyst | |
| US5455012A (en) | Exhaust gas purifying apparatus | |
| EP2388450A1 (en) | Exhaust gas purification device for internal combustion engines | |
| US20100326057A1 (en) | Exhaust Gas Purification Device | |
| US8656705B2 (en) | Exhaust gas purification device | |
| JPH10263360A (en) | Method and device controlling introduced quantity of nitrogen oxide removing medium | |
| JPH0286914A (en) | Exhaust gas purification device for hydrogen fueled engine | |
| KR20140067644A (en) | A scr system comprising temperature compensating structure and method thereof | |
| CN219932294U (en) | Airtight device and tail gas treatment system | |
| JP2022054605A (en) | Reducer supply device | |
| JPS60147521A (en) | Exhaust gas processing device for internal-combustion engine | |
| JP3276160B2 (en) | Exhaust gas purification method | |
| JPH06205939A (en) | Exhaust gas purifier for internal combustion engine | |
| JP2022054618A (en) | Reducer supply device | |
| KR100203763B1 (en) | The device for fuel hydrogen seperating of nitrogen an oxide device in a diesel engine | |
| JP2022054613A (en) | Reducer supply device | |
| JPH06126131A (en) | Method for direct desulfurization of exhaust gas |