JP2018013122A - 内燃機関の運転方法及び内燃機関 - Google Patents
内燃機関の運転方法及び内燃機関 Download PDFInfo
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- 238000010438 heat treatment Methods 0.000 description 13
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
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- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
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- 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
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- 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
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- 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
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- F01N3/24—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 constructional aspects of converting apparatus
- F01N3/30—Arrangements for supply of additional air
- F01N3/32—Arrangements for supply of additional air using air pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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Abstract
【解決手段】排ガス過給システム2及び排ガス後処理システム3を有する内燃機関1を運転するための方法であり、前記排ガス後処理システム3は、触媒コンバータ12と、前記触媒コンバータ12の上流及び下流に配置された遮断装置14、15と、前記触媒コンバータ12に対する、さらなる遮断装置16を備えたバイパス13と、を有しており、前記触媒コンバータ12に排ガスが流れることを防止するために、前記触媒コンバータ12の上流及び下流に配置された前記遮断装置14、15は閉じられ、前記バイパス13の前記遮断装置16が開かれ、前記触媒コンバータ12は、前記排ガスターボチャージャ8の前記圧縮機9内で圧縮された過給空気によって作用される。
【選択図】図1
Description
2、2a、2b 排ガス過給システム
3、3a、3b 排ガス後処理システム
4、4a、4b シリンダ
5、5a、5b 燃料
6、6a、6b 過給空気
7、7a、7b 排ガス
8、8a、8b 排ガスターボチャージャ
9、9a、9b 圧縮機
10、10a、10b タービン
11、11a、11b 過給空気冷却器
12、12a、12b 触媒コンバータ
13、13a、13b バイパス
14、14a、14b 遮断装置
15、15a、15b 遮断装置
16、16a、16b 遮断装置
17、17a、17b 導管
18、18a、18b 圧力センサ
19、19a、19b 絞り弁
20 加熱装置
21 温度センサ
22 熱交換器
23 導管
24 遮断装置
25、25a、25b 分岐箇所
26、26a、26b 供給箇所
Claims (14)
- 排ガス過給システム(2)及び排ガス後処理システム(3)を有する内燃機関(1)を運転するための方法であって、前記排ガス過給システム(2)は、タービン(10)及び圧縮機(9)を備えた排ガスターボチャージャ(8)を有しており、前記排ガス後処理システム(3)は、触媒コンバータ(12)と、前記触媒コンバータ(12)の上流及び下流に配置された遮断装置(14、15)と、前記触媒コンバータ(12)に対する、さらなる遮断装置(16)を備えたバイパス(13)と、を有しており、前記触媒コンバータ(12)を排ガスが流れることを防止するために、前記触媒コンバータ(12)の上流及び下流に配置された前記遮断装置(14、15)は閉じられ、前記バイパス(13)の前記さらなる遮断装置(16)は開かれる方法において、
前記触媒コンバータ(12)の上流及び下流に配置された前記遮断装置(14、15)が閉じられている場合、前記触媒コンバータ(12)は、前記排ガスターボチャージャ(8)の前記圧縮機(9)内で圧縮された過給空気によって作用されることを特徴とする方法。 - 前記触媒コンバータ(12)は、前記触媒コンバータ(12)内で、前記触媒コンバータに通じる排ガス供給導管に対して、及び/又は、前記触媒コンバータから延在する排ガス排出導管に対して、及び/又は、前記バイパス(13)に対して、過剰圧力が存在するように過給空気によって作用されることを特徴とする請求項1に記載の方法。
- 前記触媒コンバータ(12)内の圧力が検出され、前記触媒コンバータ(12)に供給される過給空気流が、前記触媒コンバータ(12)内で、前記排ガス供給導管に対して、及び/又は、前記排ガス排出導管に対して、及び/又は、前記バイパス(13)に対して、少なくとも2mbar、好ましくは少なくとも4mbar、特に好ましくは少なくとも8mbarの過剰圧力が存在するように調節されることを特徴とする、請求項2に記載の方法。
- 前記触媒コンバータ(12)に供給される前記過給空気が熱せられることを特徴とする、請求項1から3のいずれか一項に記載の方法。
- 前記過給空気が、熱交換器(22)内で熱せられ、前記熱交換器を通るように、一方では前記触媒コンバータ(12)に供給される過給空気が、他方では排ガスが誘導されることを特徴とする、請求項4に記載の方法。
- 前記触媒コンバータ(12)には、少なくとも120℃、好ましくは少なくとも140℃、特に好ましくは少なくとも200℃の温度を有する過給空気が供給されることを特徴とする、請求項1から5のいずれか一項に記載の方法。
- 前記触媒コンバータ(12)に供給される前記過給空気が、過給空気冷却器(11)の上流又は下流で取り出されることを特徴とする、請求項1から6のいずれか一項に記載の方法。
- 複数の内燃機関(1a、1b)を有する設備を稼働するための方法において、
内燃機関(1a、1b)が動作している場合、前記内燃機関(1a、1b)それぞれは、請求項1から7のいずれか一項に従って運転されることを特徴とする方法。 - 内燃機関(1a、1b)が停止している場合、停止している前記内燃機関(1a、1b)の前記触媒コンバータ(12a、12b)は、動作中の内燃機関(1a、1b)の過給空気によって作用されることを特徴とする、請求項8に記載の方法。
- 排ガス過給システム(2)及び排ガス後処理システム(3)を有する内燃機関(1)であって、前記排ガス過給システム(2)は、タービン(10)及び圧縮機(9)を備えた排ガスターボチャージャ(8)を有しており、前記排ガス後処理システム(3)は、触媒コンバータ(12)と、前記触媒コンバータ(12)の上流及び下流に配置された遮断装置(14、15)と、前記触媒コンバータ(12)に対する、さらなる遮断装置(16)を備えるバイパス(13)と、を有している内燃機関において、
前記排ガスターボチャージャ(8)の前記圧縮機(9)の下流では、導管(17)が、前記内燃機関(1)のシリンダ(4)に至る過給空気導管から分岐しており、前記過給空気導管を通じて、前記触媒コンバータ(12)の上流及び下流に配置された前記遮断装置(14、15)が閉じられている場合、前記触媒コンバータ(12)は、前記排ガスターボチャージャ(8)の前記圧縮機(9)内で圧縮された過給空気によって作用されることが可能であることを特徴とする内燃機関。 - 前記過給空気導管から分岐する前記導管(17)には、調節可能な絞り弁(19)が組み込まれていることを特徴とする、請求項10に記載の内燃機関。
- 前記過給空気導管から分岐する前記導管(17)が、分岐箇所(25)における過給空気の圧力が、供給箇所(26)の領域における圧力よりも大きくなるように、前記過給空気導管の前記分岐箇所(25)で分岐し、前記供給箇所(26)において、前記触媒コンバータ(12)に開くことを特徴とする、請求項10又は11に記載の内燃機関。
- 請求項1から9のいずれか一項に記載の方法を実施するための制御装置を備えることを特徴とする、請求項10から12のいずれか一項に記載の内燃機関。
- 複数の、請求項10から13のいずれか一項に記載の内燃機関(1a、1b)から成る設備であって、第1の内燃機関(1a)の過給空気を誘導する導管(17a)から分岐する導管(23)を通じて、第2の内燃機関(1b)の触媒コンバータ(12b)は過給空気によって作用されることが可能である設備。
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