JP2592119B2 - Exhaust denitration equipment for internal combustion engines - Google Patents
Exhaust denitration equipment for internal combustion enginesInfo
- Publication number
- JP2592119B2 JP2592119B2 JP63307705A JP30770588A JP2592119B2 JP 2592119 B2 JP2592119 B2 JP 2592119B2 JP 63307705 A JP63307705 A JP 63307705A JP 30770588 A JP30770588 A JP 30770588A JP 2592119 B2 JP2592119 B2 JP 2592119B2
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- JP
- Japan
- Prior art keywords
- ammonia
- exhaust
- valve
- exhaust gas
- internal combustion
- 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.)
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Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、内燃機関内で発生した高温の燃焼排ガスを
酸素の存在下で還元する脱硝機構に特徴を有する内燃機
関の排気脱硝装置に関するものである。Description: TECHNICAL FIELD The present invention relates to an exhaust gas denitration apparatus for an internal combustion engine characterized by a denitration mechanism for reducing high-temperature combustion exhaust gas generated in the internal combustion engine in the presence of oxygen. It is.
（従来の技術） 内燃機関における排気脱硝装置の従来例を第４図によ
って説明すると、内燃機関（101）の排気管（102）およ
び給気管（109）に排気過給機（103）が介装され、排気
管（104）の後方に触媒付き反応器（108）を設けるとと
もに、触媒付き反応器（108）前の排気管（104）にアン
モニア噴射弁（105）を設け、アンモニア噴射弁（105）
にアンモニアポンプ（106）、アンモニアボンベ（107）
を連設して、排気過給機（103）の排気ターボを駆動し
た後の比較的に低温（250〜450℃程度）の排ガス中にア
ンモニア（NH3）を添加し触媒付き反応器（108）の触媒
上で作用させて、排気中の酸化窒素を分解して脱硝する
構造になっている。(Prior Art) A conventional example of an exhaust gas denitration device in an internal combustion engine will be described with reference to FIG. 4. Exhaust supercharger (103) is interposed in exhaust pipe (102) and air supply pipe (109) of internal combustion engine (101). In addition, a reactor with a catalyst (108) is provided behind the exhaust pipe (104), and an ammonia injection valve (105) is provided in the exhaust pipe (104) in front of the reactor with catalyst (108). )
Ammonia pump (106), ammonia cylinder (107)
And a catalyst-added reactor (108) by adding ammonia (NH 3 ) to relatively low-temperature (about 250 to 450 ° C.) exhaust gas after driving the exhaust turbo of the exhaust supercharger (103). ) To act on the catalyst to decompose nitric oxide in exhaust gas and denitrate.
（発明が解決しようとする課題） 従来の前記排気脱硝装置は、排気過給機を駆動した後
の比較的に低温の排気中にアンモニアを添加して、該ア
ンモニアを触媒付き反応器の触媒上で作用させる構造に
なっているため、触媒の使用により装置が大型化してア
ンモニアの添加効率、NOx低減効率が低く、コスト高に
なっているなどの問題点がある。(Problems to be Solved by the Invention) In the conventional exhaust gas denitration apparatus, ammonia is added to exhaust gas at a relatively low temperature after driving an exhaust supercharger, and the ammonia is added to the catalyst of a reactor with a catalyst. However, the use of a catalyst causes a problem in that the size of the apparatus is increased, the efficiency of ammonia addition and the efficiency of NOx reduction are low, and the cost is high.
アンモニアやアンモニア前駆物質（尿素等）を高温の
燃焼排ガス中に添加し、燃焼排ガス中の窒素酸化物およ
び酸素と作用させて還元作用を生じせしめ、触媒なしで
酸化窒素を分解させると効率的、廉価であるが、例え
ば、還元剤としてアンモニアガスのみを投入すると、投
入量が少いためモーメンタムが小さく排ガス中に十分に
混合されない。また、一般的に考えられる空気をキヤリ
ヤガスとすると、排ガスとの混合に到るまでにアンモニ
アガスの相当量が分解されてNOx低減効率が低くなる。Ammonia and ammonia precursors (urea, etc.) are added to high-temperature flue gas, and they act on nitrogen oxides and oxygen in the flue gas to produce a reducing effect. It is efficient to decompose nitric oxide without a catalyst. Although inexpensive, for example, when only ammonia gas is charged as a reducing agent, the amount of input is small, so that the momentum is small and the gas is not sufficiently mixed in the exhaust gas. Further, when air generally considered as a carrier gas, a considerable amount of ammonia gas is decomposed before mixing with exhaust gas, and the NOx reduction efficiency is reduced.
特に内燃機関への投入を考えると、アンモニア添加時
の排ガスは、高温、高圧であってアンモニアの酸化物と
なる酸素との反応速度も大きいため、排ガスとの混合に
到るまでにアンモニアが分解される確率が高いなどの課
題がある。In particular, considering the introduction into the internal combustion engine, the exhaust gas at the time of addition of ammonia is at a high temperature and high pressure and has a high reaction rate with oxygen, which is an oxide of ammonia, so that ammonia is decomposed before mixing with the exhaust gas. There is a problem such as a high probability of being performed.
本発明は、前記のような課題に対処するために開発さ
れたものであって、その目的とする処は、アンモニアあ
るいはアンモニア前駆物質をシリンダあるいは排気ポー
トの排気弁近くの燃焼排ガス中にタイミングよく噴射、
添加するとともに、排ガスをキヤリアガスとして適用す
ることにより、機構の小型化、コスト節減とともに脱硝
性能、信頼性を向上した内燃機関の排気脱硝装置を提供
するにある。The present invention has been developed in order to address the above-described problems, and its object is to provide ammonia or an ammonia precursor in a combustion exhaust gas near a cylinder or an exhaust valve of an exhaust port with good timing. injection,
An object of the present invention is to provide an exhaust gas denitration apparatus for an internal combustion engine, which has a reduced size and cost, and has improved denitration performance and reliability by adding exhaust gas as a carrier gas.
（課題を解決するための手段） 本発明は、内燃機関におけるシリンダあるいは排気ポ
ートの排気弁の近接部に、排ガスをキヤリヤガスとして
アンモニアあるいはまたアンモニア前駆物質を燃焼排ガ
ス中に添加する噴射弁を設けて、クランク角度センサー
と開弁コントローラを備え排気弁の開弁直前から掃気孔
の開孔前まで前記噴射の開制御する添加制御装置を前記
噴射弁に連設した構成に特徴を有し、シリンダあるいは
排気ポートの排気弁近くの燃焼排ガス中に噴射弁でアン
モニアあるいはまたアンモニア前駆物質を噴出、添加
し、添加制御装置による噴射弁の前記開制御により、添
加タイミングおよび混合を良好にするとともに、排ガス
をキヤリアガスとして適用したことにより、混合性能を
さらに高めるとともに酸化窒素の分解効率を高めてい
る。(Means for Solving the Problems) According to the present invention, an injection valve for adding ammonia or an ammonia precursor to combustion exhaust gas by using exhaust gas as a carrier gas is provided near an exhaust valve of a cylinder or an exhaust port in an internal combustion engine. An addition control device that includes a crank angle sensor and a valve opening controller and that controls the opening of the injection from immediately before the opening of the exhaust valve to before the opening of the scavenging hole is characterized in that it is connected to the injection valve. Ammonia or an ammonia precursor is ejected and added to the combustion exhaust gas near the exhaust valve of the exhaust port by the injection valve, and the addition control device controls the opening of the injection valve to improve the addition timing and mixing, and to reduce the exhaust gas. The application as a carrier gas further enhances mixing performance and increases the efficiency of nitrogen oxide decomposition. I'm worried.
（作 用） 添加制御装置によって噴射弁が排気弁の開弁直前から
掃気孔の開孔前まで開制御され、噴射弁の前記開制御に
よりアンモニアあるいはアンモニア前駆物質が、シリン
ダあるいは排気ポートの排気弁近くの燃焼排ガス中に直
接的に噴射、添加されて、燃焼排ガス中にアンモニアあ
るいはまたアンモニア前駆物質がタイミングよく添加さ
れ、混合が極めて良好になるとともに、排ガスをキヤリ
アガスとして適用したことにより、アンモニアあるいは
アンモニア前駆物質の燃焼排ガス中への混合がさらに良
好となって、燃焼排ガスの高温、酸素の存在下で、燃焼
排ガス中の酸化窒素の分解が効率よく遂行される。(Operation) The addition control device controls the opening of the injection valve from immediately before the opening of the exhaust valve to before the opening of the scavenging hole, and the opening control of the injection valve causes ammonia or an ammonia precursor to be discharged from the cylinder or the exhaust valve of the exhaust port. Direct injection and addition to nearby combustion exhaust gas, ammonia or ammonia precursors are added to the combustion exhaust gas in a timely manner, and mixing becomes extremely good, and by applying the exhaust gas as a carrier gas, ammonia or The mixing of the ammonia precursor into the flue gas is further improved, and the decomposition of the nitric oxide in the flue gas is efficiently performed at a high temperature of the flue gas and in the presence of oxygen.
（実施例） 第１図および第２図に本発明の第１実施例を示し、第
１図に示す内燃機関は、ピストン（１）、シリンダライ
ナ（２）、シリンダヘツド（３）、排気ポート（４）、
排気弁（５）、排気集合管（６）、燃料噴射弁（７）、
掃気孔（13）等からなり、内燃機関におけるシリンダ
（2,3）の排気弁（５）の近接部に、排ガスをキヤリア
ガスとしてアンモニアあるいはアンモニア前駆物質（尿
素等）を燃焼排ガス中に添加する噴射弁（８）を設け
て、クランク角度センサー（12）と開弁コントローラ
（11）を備え排気弁（５）の開弁直前から掃気孔（13）
の開孔前まで噴射弁（８）を開制御する添加制御装置
（11,12）を噴射弁（８）に連設した内燃機関の排気脱
硝装置になっている。(Embodiment) FIGS. 1 and 2 show a first embodiment of the present invention. The internal combustion engine shown in FIG. 1 includes a piston (1), a cylinder liner (2), a cylinder head (3), and an exhaust port. (4),
Exhaust valve (5), exhaust manifold (6), fuel injection valve (7),
Injection, consisting of scavenging holes (13), etc., which adds ammonia or ammonia precursors (urea, etc.) to the combustion exhaust gas, using the exhaust gas as a carrier gas, near the exhaust valve (5) of the cylinder (2, 3) in the internal combustion engine. Provided with a valve (8), equipped with a crank angle sensor (12) and a valve opening controller (11), and a scavenging hole (13) immediately before the exhaust valve (5) was opened.
This is an exhaust gas denitration device for an internal combustion engine in which an addition control device (11, 12) for opening and controlling the injection valve (8) is connected to the injection valve (8) before opening.
前記噴射弁（８）は、シリンダヘツド（３）に配設さ
れて排気弁（５）に近接し、燃焼室の上部内の燃焼排ガ
ス中にアンモニアあるいはまたアンモニア前駆物質（尿
素等）を直接に噴射して添加する構造になっており、供
給管（8a）、アンモニアポンプ（９）を介してアンモニ
アボンベ（10）に連設され、さらに、排気集合管（６）
と供給管（8a）間にポンプ（14）付きキヤリアガス供給
管（15）を連設して、排気集合管（６）内の排ガスをア
ンモニアあるいはまたアンモニア前駆物質のキヤリアガ
スとして供給し、アンモニア、アンモニア前駆物質の効
率を高め節減している。The injection valve (8) is disposed in the cylinder head (3) and is close to the exhaust valve (5), and directly feeds ammonia or an ammonia precursor (urea or the like) into the combustion exhaust gas in the upper part of the combustion chamber. It is configured to be injected and added, and is connected to an ammonia cylinder (10) via a supply pipe (8a) and an ammonia pump (9).
A carrier gas supply pipe (15) with a pump (14) is connected between the gas supply pipe (8a) and the exhaust gas in the exhaust manifold (6) is supplied as ammonia or a carrier gas of an ammonia precursor, and ammonia, ammonia Precursor efficiency has been increased and saved.
前記添加制御装置（11,12）は、内燃機関のクランク
角度を検出するクランク角度センサー（12）と、クラン
ク角度センサー（12）と噴射弁（８）間に連設された開
弁コントローラ（11）からなり、開弁コントローラ（1
1）は、クランク角度センサー（12）のクランク角度の
検出信号によって噴射弁（８）の開制御信号を出力し噴
射弁（８）を開制御する。The addition control device (11, 12) includes a crank angle sensor (12) for detecting a crank angle of the internal combustion engine, and a valve opening controller (11) connected between the crank angle sensor (12) and the injection valve (8). ) And the valve opening controller (1
1) Outputs an opening control signal for the injection valve (8) based on the detection signal of the crank angle of the crank angle sensor (12), and controls the opening of the injection valve (8).
開弁コントローラ（11）による噴射弁（８）の制御
は、第２図に示すように排気弁（５）の開弁前のクラン
ク角度５〜10゜前に噴射弁（８）が開弁され、該噴射弁
（８）は排気弁（５）の開弁後のクランク角度35〜40゜
までの期間にわたり開制御されたのち、掃気孔（13）の
開孔前に閉制御されて、前記開制御によりシリンダの上
部内に発生いている燃焼排ガス中にアンモニアあるいは
またアンモニア前駆物質がタイミングよく噴射、添加さ
れる。As shown in FIG. 2, the control of the injection valve (8) by the valve opening controller (11) is such that the injection valve (8) is opened 5 to 10 degrees before the crank angle before the exhaust valve (5) is opened. The injection valve (8) is controlled to open for a period of up to a crank angle of 35 to 40 ° after the exhaust valve (5) is opened, and then closed before the scavenging hole (13) is opened. Ammonia or an ammonia precursor is injected and added with good timing to the combustion exhaust gas generated in the upper part of the cylinder by the opening control.
本発明の第１実施例は、前記のような構成になってお
り作用について詳述すると、添加制御装置（11,12）に
よる噴射弁（８）の開制御により、内燃機関のシリンダ
上部内の排気弁（５）近くの燃焼排ガス中に、アンモニ
アあるいはまたアンモニア前駆物質が排気弁（５）の開
弁直前から掃気孔（13）の開孔前まで噴射、添加され
て、該燃焼排ガスは高温（1000〜800℃）であって適度
の酸素の存在下であり、かつ掃気孔に近接した位置でア
ンモニアあるいはアンモニア前駆物質がタイミングよく
添加され、混合性能が高められて、燃料排ガス中の酸化
窒素が効率よく反応されて分解される。排ガスをキヤリ
アガスとしたことによりアンモニアあるいはまたアンモ
ニア前駆物質は前記酸化窒素の分解に効果的に混合され
て作用し大幅な節減が可能となり、触媒は不必要となっ
て脱硝性能、信頼性が著しく向上されている。この場合
のアンモニアガスあるいはまたアンモニア前駆物質（尿
素等）の添加量は僅少となり、何らかのキヤリアガスに
より添加しないと燃焼排ガスとの混合が十分に達成され
ず期待する脱硝効果が得られないが、キヤリアガスとし
て排ガスを用いると含有酸素の濃度が低いため、燃焼排
ガスとの混合までに次の反応式で消失されるアンモニア
量を少くできる。The first embodiment of the present invention has the above-described structure, and the operation thereof will be described in detail. By controlling the opening of the injection valve (8) by the addition control device (11, 12), the inside of the cylinder upper part of the internal combustion engine is controlled. In the flue gas near the exhaust valve (5), ammonia or an ammonia precursor is injected and added from immediately before opening the exhaust valve (5) to before the scavenging hole (13) is opened. (1000-800 ° C.), in the presence of moderate oxygen, and at a position close to the scavenging hole, ammonia or an ammonia precursor is added in a timely manner to improve mixing performance, and the nitrogen oxides in the fuel exhaust gas are increased. Are efficiently reacted and decomposed. By using the carrier gas as the exhaust gas, ammonia or ammonia precursors are effectively mixed and decomposed to the decomposition of the nitrogen oxides, thereby enabling significant savings. No catalyst is required, and the denitration performance and reliability are significantly improved. Have been. In this case, the addition amount of ammonia gas or an ammonia precursor (urea or the like) is small, and unless added with some carrier gas, mixing with the combustion exhaust gas is not sufficiently achieved and the expected denitration effect cannot be obtained. Since the concentration of oxygen contained is low when exhaust gas is used, the amount of ammonia that is lost by the following reaction formula before mixing with the combustion exhaust gas can be reduced.
NH3＋O2→N2,NO アンモニアの消失量の低減は、内燃機関（デイーゼル
エンジン）の排ガスの脱硝には極めて重要となる。即
ち、脱硝反応に最適な温度域（800〜1000℃）の燃焼排
ガスにアンモニアを投入しようとすると、その時点は５
〜10Kg/cm2と高く反応性が高いため、例えば、空気をキ
ヤリアガスとするとアンモニアの消失量が極めて多くな
り、窒素ガス、アルゴルガス、蒸気等をキヤリアガスと
して適用するとアンモニアの消失は抑制されるが、経済
的に大きな負担となり、排ガスをキヤリアガスとして適
用すると極めて有利になる。NH 3 + O 2 → N 2 , NO Reduction of the amount of ammonia that is removed is extremely important for denitration of exhaust gas from an internal combustion engine (diesel engine). That is, if ammonia is to be injected into the combustion exhaust gas in a temperature range (800 to 1000 ° C.) that is optimal for the denitration reaction, the time is 5 times.
Because of the high high reactivity with to 10 kg / cm 2, for example, loss of ammonia when the air and Kiyariagasu becomes extremely large, the nitrogen gas, Algol gas, although loss of ammonia Applying steam such as Kiyariagasu is suppressed This is economically burdensome, and it is extremely advantageous to use exhaust gas as carrier gas.
第３図に本発明の第２実施例を示しており、第１実施
例に比べると、噴射弁（８）を排出ポート（４）に配設
して噴射位置を掃気弁（５）に近接した配置とし、アン
モニアあるいはまたアンモニア前駆物質を排気ポート
（４）内に噴射して添加する構成に特徴を有し、その他
の構成は第１実施例と同様になっており、噴射弁（８）
の開制御は第２図に示した第１実施例と同様になって、
第１実施例と同様な作用効果が得られる。FIG. 3 shows a second embodiment of the present invention. Compared with the first embodiment, the injection valve (8) is arranged at the discharge port (4) so that the injection position is closer to the scavenging valve (5). It is characterized by a configuration in which ammonia or an ammonia precursor is injected into the exhaust port (4) and added thereto, and the other configuration is the same as that of the first embodiment, and the injection valve (8)
Is similar to that of the first embodiment shown in FIG.
The same operation and effect as those of the first embodiment can be obtained.
（発明の効果） 本発明は、前述のような構成からなり、添加制御装置
による噴射弁の開制御によって、内燃機関のシリンダあ
るいは排気ポートの掃気弁近くの燃焼排ガス中に、アン
モニアあるいはまたアンモニア前駆物質が排気弁の開弁
前から掃気孔の開孔前まで噴射、添加されて、燃焼排ガ
スの高温、酸素の存在下で、かつ掃気弁の近くでアンモ
ニアあるいはアンモニア前駆物質がタイミングよく添加
されて混合性が高められ、燃焼排ガス中の酸化窒素が効
率よく反応されて分解されるとともに、排ガスをキヤリ
アガスとしたことにより混合性能、分解効率が高められ
て、アンモニア、アンモニア前駆物質が大幅に節減され
触媒が不必要となって、脱硝性能、信頼性が著しく向上
されている。(Effects of the Invention) The present invention has the above-described configuration, and controls the opening of the injection valve by the addition control device so that ammonia or ammonia precursor is contained in the combustion exhaust gas near the scavenging valve of the cylinder or the exhaust port of the internal combustion engine. The substance is injected and added from before the exhaust valve is opened to before the scavenging hole is opened, and ammonia or ammonia precursor is added in a timely manner in the high temperature of the combustion exhaust gas, in the presence of oxygen, and near the scavenging valve. The mixing property is enhanced, and the nitrogen oxides in the combustion exhaust gas are efficiently reacted and decomposed, and the mixing performance and decomposition efficiency are increased by using the exhaust gas as a carrier gas, so that ammonia and ammonia precursors are greatly reduced. Since a catalyst is not required, denitration performance and reliability have been significantly improved.
機構が大幅に簡素化され小型化されているとともに、
アンモニア、アンモニア前駆物質が節減されて低コスト
となるなどの利点を有している。The mechanism has been greatly simplified and downsized,
There are advantages such as reduction of ammonia and ammonia precursor, resulting in low cost.
以上本発明を実施例について説明したが、勿論本発明
はこのような実施例にだけ局限されるものではなく、本
発明の精神を逸脱しない範囲内で種々の設計の改変を施
しうるものである。Although the present invention has been described with reference to the embodiment, the present invention is, of course, not limited to such an embodiment, and various design modifications can be made without departing from the spirit of the present invention. .
第１図は本発明の第１実施例を示す縦断機構図、第２図
は噴射弁と排気弁および掃気孔の開弁、開孔の制御対比
図、第３図は第２実施例を示す縦断機構図、第４図は従
来例の縦断機構図である。 2,3:シリンダ、4:排気ポート 5:排気弁、8:噴射弁 11:開弁コントローラ、12:クランク角度センサーFIG. 1 is a longitudinal sectional view showing a first embodiment of the present invention, FIG. 2 is a control comparison diagram of an injection valve, an exhaust valve, and a scavenging hole, and FIG. 3 is a second embodiment. FIG. 4 is a longitudinal section mechanism diagram of a conventional example. 2,3: cylinder, 4: exhaust port 5: exhaust valve, 8: injection valve 11: valve opening controller, 12: crank angle sensor
Claims (1)
ートの排気弁の近接部に、排ガスをキヤリヤガスとして
アンモニアあるいはまたアンモニア前駆物質を燃焼排ガ
ス中に添加する噴射弁を設けて、クランク角度センサー
と開弁コントローラを備え排気弁の開弁直前から掃気孔
の開孔前まで前記噴射弁を開制御する添加制御装置を前
記噴射弁に連設したことを特徴とする内燃機関の排気脱
硝装置。An injection valve for adding ammonia or an ammonia precursor to flue gas using exhaust gas as a carrier gas is provided in the vicinity of an exhaust valve of a cylinder or an exhaust port in an internal combustion engine, and a crank angle sensor and a valve opening controller are provided. An exhaust gas denitration apparatus for an internal combustion engine, wherein an addition control device for controlling the opening of the injection valve from immediately before the opening of the exhaust valve to before the opening of the scavenging hole is connected to the injection valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63307705A JP2592119B2 (en) | 1988-12-07 | 1988-12-07 | Exhaust denitration equipment for internal combustion engines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63307705A JP2592119B2 (en) | 1988-12-07 | 1988-12-07 | Exhaust denitration equipment for internal combustion engines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02157415A JPH02157415A (en) | 1990-06-18 |
| JP2592119B2 true JP2592119B2 (en) | 1997-03-19 |
Family
ID=17972246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63307705A Expired - Fee Related JP2592119B2 (en) | 1988-12-07 | 1988-12-07 | Exhaust denitration equipment for internal combustion engines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2592119B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102695855A (en) * | 2009-12-16 | 2012-09-26 | 三菱重工业株式会社 | Exhaust gas purification method and exhaust gas purification system for reciprocating internal combustion engine |
| KR20160009367A (en) * | 2014-07-16 | 2016-01-26 | 현대중공업 주식회사 | Selective Non-Catalytic Reduction System |
| KR20160009368A (en) * | 2014-07-16 | 2016-01-26 | 현대중공업 주식회사 | Selective Non-Catalytic Reduction System |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2806055B2 (en) * | 1991-01-31 | 1998-09-30 | 三菱自動車工業株式会社 | Low pollution diesel engine |
| JP4696288B2 (en) * | 2006-11-17 | 2011-06-08 | 三菱自動車工業株式会社 | Exhaust purification device |
| JP2010216274A (en) * | 2009-03-13 | 2010-09-30 | Nippon Shokubai Co Ltd | Power generating system and method for generating power |
| US8534237B2 (en) * | 2010-04-22 | 2013-09-17 | Toyota Jidosha Kabushiki Kaisha | Control system of internal combustion engine |
| JP6019594B2 (en) * | 2012-01-27 | 2016-11-02 | 株式会社Ihi | Denitration equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55104513A (en) * | 1979-02-06 | 1980-08-11 | Nissan Motor Co Ltd | Exhaust-gas purifying system for internal combustion engine |
| JPS6119940A (en) * | 1984-07-07 | 1986-01-28 | Mitsubishi Heavy Ind Ltd | Method of introducing intake-air and discharging exhaust gas |
-
1988
- 1988-12-07 JP JP63307705A patent/JP2592119B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102695855A (en) * | 2009-12-16 | 2012-09-26 | 三菱重工业株式会社 | Exhaust gas purification method and exhaust gas purification system for reciprocating internal combustion engine |
| KR20160009367A (en) * | 2014-07-16 | 2016-01-26 | 현대중공업 주식회사 | Selective Non-Catalytic Reduction System |
| KR20160009368A (en) * | 2014-07-16 | 2016-01-26 | 현대중공업 주식회사 | Selective Non-Catalytic Reduction System |
| KR102024397B1 (en) * | 2014-07-16 | 2019-09-23 | 한국조선해양 주식회사 | Selective Non-Catalytic Reduction System |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02157415A (en) | 1990-06-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |