JP2018003837A - 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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- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 15
- 230000009977 dual effect Effects 0.000 claims description 15
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000002551 biofuel Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
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- 230000001419 dependent effect Effects 0.000 description 1
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- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 229910052815 sulfur oxide Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
Description
Claims (15)
- 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。 - 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、請求項1に記載の方法。 - 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、請求項1または2に記載の方法。
- 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、請求項3に記載の方法。
- 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、請求項1から4までのいずれか一項に記載の方法。
- 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、請求項1から5までのいずれか一項に記載の方法。
- 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、請求項1から6までのいずれか一項に記載の方法。
- 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、請求項7に記載の方法。
- 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、請求項7または8に記載の方法。
- 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、請求項7から9までのいずれか一項に記載の方法。
- 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、請求項7から9までのいずれか一項に記載の方法。
- 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、請求項1から11までのいずれか一項に記載の方法。
- 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、請求項12に記載の方法。
- 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、請求項12または13に記載の方法。
- 請求項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。
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KR20180005109A (ko) | 2018-01-15 |
CN107575313A (zh) | 2018-01-12 |
JP2022107648A (ja) | 2022-07-22 |
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