JP2018193994A - 大型ディーゼルエンジンの運転方法及び大型ディーゼルエンジン - Google Patents
大型ディーゼルエンジンの運転方法及び大型ディーゼルエンジン Download PDFInfo
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- F02D19/105—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels peculiar to compression-ignition engines in which the main fuel is gaseous operating in a special mode, e.g. in a liquid fuel only mode for starting
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- F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- General Engineering & Computer Science (AREA)
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- Output Control And Ontrol Of Special Type Engine (AREA)
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Abstract
Description
Claims (15)
- 大型ディーゼルエンジン、特に二元燃料大型ディーゼルエンジンを運転する方法であって、
液体燃料が燃焼のためにシリンダ内に導入される液体モードで運転することができ、かつ
前記二元燃料大型ディーゼルエンジンが、シリンダ内に燃料としてガスを導入する気体モードでも運転することができ、
前記大型ディーゼルエンジンのシリンダに掃気を供給して空気−燃料混合物を生成し、前記掃気はターボチャージャによって充填圧力で提供され、前記ターボチャージャは前記大型ディーゼルエンジンからの排気ガスによって駆動され、前記ターボチャージャは周囲空気を吸入して前記掃気を提供し、前記ターボチャージャの出力は排気弁によって変更可能であり、前記排気弁によって前記ターボチャージャを駆動する前記排気ガスの質量流量が調整される前記方法において、
前記大型ディーゼルエンジンの運転中に周囲空気又は掃気の温度及び/又は湿度の特性である制御パラメータが決定され、前記制御パラメータの値を使用して前記排気弁を調整して、前記ターボチャージャの出力を前記周囲空気の温度及び/又は湿度に応じて変化させることを特徴とする方法。 - 前記シリンダの出口弁を所定の閉鎖時間で閉鎖して前記シリンダの掃気を完了させ、前記閉鎖時間を決定するために前記制御パラメータの値を使用する、請求項1に記載の方法。
- 前記ターボチャージャによって吸入された前記周囲空気の温度は、前記制御パラメータを決定するために測定によって決定される、請求項1又は請求項2に記載の方法。
- 前記ターボチャージャによって吸入される前記周囲空気の湿度が、前記制御パラメータを決定するために測定によって決定される、請求項1から請求項3までのいずれか1項に記載の方法。
- 前記制御パラメータを決定するために、前記充填空気の温度が使用される、請求項1から請求項4までのいずれか1項に記載の方法。
- 前記排気弁を調整するために第1の相互関係が使用され、この相互関係は、前記ターボチャージャによって供給される充填圧力が前記ターボチャージャによって生成された空気質量流量に依存することを示す、請求項1から請求項5までのいずれか1項に記載の方法。
- 前記シリンダの出口弁の閉鎖タイミングを決定するために第2の相互関係が使用され、相互関係は、提供された掃気に及ぼす掃気度の依存性を示し、掃気度は、シリンダ内の掃気の体積と、掃気の体積及び閉鎖時間におけるシリンダ内の残留ガスの合計との比である、請求項2から請求項7までのいずれか1項に記載の方法。
- 前記出口弁の前記閉鎖時間は、前記シリンダ内の掃気度が少なくとも70%、好ましくは少なくとも約80%になるように調整される、請求項7に記載の方法。
- 前記第1及び/又は前記第2の相互関係は、ルックアップテーブルの形態で提供される、請求項6から請求項8までのいずれか1項に記載の方法。
- 前記第1の相互関係は、機能的相互関係として、又はアルゴリズムの形態で提供される、請求項6から請求項9までのいずれか1項に記載の方法。
- 前記第2の相互関係は、機能的相互関係として、又はアルゴリズムの形態で提供される、請求項6から請求項10までのいずれか1項に記載の方法。
- 圧縮機モデル及び掃気モデルが提供され、前記圧縮機モデルは、前記ターボチャージャによって供給される前記充填圧力と前記ターボチャージャによって生成される前記空気質量流量との間の相互関係を、前記周囲空気の温度又は湿度を考慮してモデル化したものであり、前記掃気モデルは、前記シリンダ内の前記掃気度と、供給される前記掃気と、前記出口弁の閉鎖時間との間の相互関係を、前記充填空気の温度を考慮してモデル化したものであり、前記圧縮機モデルと前記掃気モデルによって、前記制御パラメータの値に応じて、前記出口弁の閉鎖時間と前記排気弁の調整の両方が決定される、請求項1から請求項11までのいずれか1項に記載の方法。
- 前記シリンダ内の最終圧縮温度が所定の範囲内に維持される、請求項1から請求項12までのいずれか1項に記載の方法。
- 請求項1から請求項13までのいずれか1項に記載の方法によって運転される大型ディーゼルエンジン、特に二元燃料大型ディーゼルエンジン。
- 長手方向に掃気される2ストロークの大型ディーゼルエンジンとして設計された、請求項14に記載の大型ディーゼルエンジン。
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JP2020165341A (ja) * | 2019-03-28 | 2020-10-08 | 国立研究開発法人 海上・港湾・航空技術研究所 | 燃焼機関の実時間性能予測方法及び実時間性能予測プログラム |
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JP7329488B2 (ja) * | 2019-11-15 | 2023-08-18 | エムエーエヌ・エナジー・ソリューションズ・フィリアル・アフ・エムエーエヌ・エナジー・ソリューションズ・エスイー・ティスクランド | クロスヘッド式大型低速ターボ過給2ストロークユニフロー掃気内燃機関及びこれを動作させる方法 |
CN115288866A (zh) * | 2022-07-05 | 2022-11-04 | 上海中船三井造船柴油机有限公司 | 一种提高双燃料发动机燃气模式中废气温度的控制方法 |
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JP2020165341A (ja) * | 2019-03-28 | 2020-10-08 | 国立研究開発法人 海上・港湾・航空技術研究所 | 燃焼機関の実時間性能予測方法及び実時間性能予測プログラム |
JP7308480B2 (ja) | 2019-03-28 | 2023-07-14 | 国立研究開発法人 海上・港湾・航空技術研究所 | 燃焼機関の実時間性能予測方法及び実時間性能予測プログラム |
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Publication number | Publication date |
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EP3404237B1 (de) | 2021-01-27 |
KR102510399B1 (ko) | 2023-03-14 |
CN108869060A (zh) | 2018-11-23 |
EP3404237A1 (de) | 2018-11-21 |
DK3404237T3 (da) | 2021-04-26 |
JP2023157957A (ja) | 2023-10-26 |
KR20180125388A (ko) | 2018-11-23 |
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