JP2022107648A - 二元燃料大型ディーゼルエンジンの動作方法および二元燃料大型ディーゼルエンジン - Google Patents
二元燃料大型ディーゼルエンジンの動作方法および二元燃料大型ディーゼルエンジン Download PDFInfo
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Abstract
Description
(項1)
液体燃料が燃焼のためにシリンダに導入される液体モードで動作可能であり、また燃料としてのガスが前記シリンダに導入されるガスモードであって、前記ガスが掃気と混合されて、所定の空気ガス比で燃焼されるガスモードでも動作可能な二元燃料大型ディーゼルエンジン、特に長手方向掃気式2ストローク大型ディーゼルエンジンの動作方法であって、
前記ガスモードでの動作中、前記空気ガス比の変化の検出を可能にする制御パラメータが監視され、また
前記制御パラメータが制限値に達すると前記大型ディーゼルエンジンがパワーバランスモードで動作され、このパワーバランスモードでは、前記空気ガス比が、ガスの燃焼のために上昇される、動作方法。
(項2)
前記パワーバランスモードを起動するための前記制御パラメータが、
シリンダ圧力、
シリンダ圧力と圧縮圧力の比、
燃焼の速度、
掃気を提供するためにターボチャージャの入口で吸入される空気の温度、
前記ターボチャージャ用のウェイストゲート弁の位置、
掃気を提供するためにターボチャージャの入口で吸入される空気の湿度、
前記シリンダに導入される前記掃気の温度、
前記掃気の現在の圧力、
排ガス中の酸素濃度、
排ガス中の窒素酸化物濃度
のうちの少なくとも1つを含む、項1に記載の方法。
(項3)
前記パワーバランスモードを起動するための前記制御パラメータが、前記空気ガス混合気の燃焼中のシリンダ圧力である、項1または2に記載の方法。
(項4)
前記制御パラメータの制限値が、前記シリンダの設計圧力である、項3に記載の方法。
(項5)
ターボチャージャによって吸入される空気の温度が制限温度を超えたると前記パワーバランスモードが起動され、また前記制限温度が少なくとも27℃である、項1から4までのいずれか一項に記載の方法。
(項6)
ターボチャージャによって吸入される空気の相対湿度が制限湿度を超えると前記パワーバランスモードが起動され、また前記制限湿度が少なくとも40%、好ましくは少なくとも60%である、項1から5までのいずれか一項に記載の方法。
(項7)
前記パワーバランスモードにおいて、前記ガスに加えて、追加量の液体燃料が前記シリンダに導入される、項1から6までのいずれか一項に記載の方法。
(項8)
前記追加量の液体燃料が、前記大型ディーゼルエンジンの前記液体モードで用いられる噴射装置によって前記シリンダに導入される、項7に記載の方法。
(項9)
最初に最小追加量の液体燃料が前記シリンダに導入され、その後、前記大型ディーゼルエンジンの所望の負荷に達するまで前記追加量が漸次増加される、項7または8に記載の方法。
(項10)
前記液体燃料の追加量が、前記シリンダに導入される燃料の総量の20重量%以下、好ましくは15重量%以下である、項7から9までのいずれか一項に記載の方法。
(項11)
前記液体燃料の追加量が、前記シリンダに導入される燃料の総量の約5~10重量%の範囲内である、項7から9までのいずれか一項に記載の方法。
(項12)
前記パワーバランスモードにおいて、追加量の掃気の生成を補助するブロワが起動される、項1から11までのいずれか一項に記載の方法。
(項13)
前記ブロワが、前記掃気の追加量の修正を助ける調整可能ブロワである、項12に記載の方法。
(項14)
前記ブロワが、ターボチャージャのコンプレッサと直列に配置される、項12または13に記載の方法。
(項15)
項1から14までのいずれか一項に記載の方法で動作する二元燃料大型ディーゼルエンジン、特に長手方向掃気式2ストローク大型ディーゼルエンジン。
Claims (1)
- 液体燃料が燃焼のためにシリンダに導入される液体モードで動作可能であり、また燃料としてのガスが前記シリンダに導入されるガスモードであって、前記ガスが掃気と混合されて、所定の空気ガス比で燃焼されるガスモードでも動作可能な二元燃料大型ディーゼルエンジン、特に長手方向掃気式2ストローク大型ディーゼルエンジンの動作方法であって、
前記ガスモードでの動作中、前記空気ガス比の変化の検出を可能にする制御パラメータが監視され、また
前記制御パラメータが制限値に達すると前記大型ディーゼルエンジンがパワーバランスモードで動作され、このパワーバランスモードでは、前記空気ガス比が、ガスの燃焼のために上昇される、動作方法。
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EP3722572A1 (en) | 2019-04-12 | 2020-10-14 | Winterthur Gas & Diesel Ltd. | Internal combustion engine |
EP3726036A1 (de) * | 2019-04-15 | 2020-10-21 | Winterthur Gas & Diesel AG | Verfahren zum betreiben eines grossmotors sowie grossmotor |
EP3872330A1 (de) * | 2020-02-25 | 2021-09-01 | Winterthur Gas & Diesel AG | Verfahren zum betreiben eines grossdieselmotors, sowie grossdieselmotor |
CN111636969B (zh) * | 2020-06-05 | 2021-04-16 | 吉林大学 | 一种二冲程双燃料发动机的供油供气控制方法及系统 |
JP2023036544A (ja) | 2021-09-02 | 2023-03-14 | ヴィンタートゥール ガス アンド ディーゼル アーゲー | 大型エンジンを作動させる方法及び大型エンジン |
DK181214B1 (en) * | 2021-10-26 | 2023-05-09 | Man Energy Solutions Filial Af Man Energy Solutions Se Tyskland | A large two-stroke uniflow scavenged gaseous fueled engine and method for controlling supply of liquid fuel |
JP2024021055A (ja) | 2022-08-02 | 2024-02-15 | ヴィンタートゥール ガス アンド ディーゼル アーゲー | 大型エンジンにおける過早着火を検出する方法及び大型エンジン |
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KR102327514B1 (ko) | 2021-11-17 |
KR20180005109A (ko) | 2018-01-15 |
JP7475109B2 (ja) | 2024-04-26 |
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