クローズドカップルGPFでのアッシュ生成への潤滑油添加剤の寄与
Contribution of Lubricant Additives to Ash Generation on a Close-Coupled GPF
- 提供方法
- 版元よりダウンロードリンクを連絡
- 形態
- 価格
- 一般価格(税込)：￥6,600 会員価格(税込)：￥5,280
- 文献番号
- 20201991
- 文献・情報種別
- SAE Paper
No.2020-01-2162
- 掲載ページ
- 1-8(Total 8 p)
- 発行年月
- 2020年 9月
- 出版社
- SAE International
- 言語
- 英語
書誌事項
| 著者（英） | 1) Stephane Caillaud, 2) Olivier Courtois, 3) Thierry Delvigne, 4) Benjamin Hennebert |
|---|---|
| 勤務先（英） | 1) Total Marketing & Service, 2) DSi, 3) DSi, 4) DSi |
| 抄録 | GPFエレメントの灰の負荷=オイル消費量で目標寿命にわたるエンジンオイル消費量を知る必要がある．灰分負荷の変化はオイル中の元素の含有量に比例し，Ca，Mgの寄与は摩擦調整剤(Mo)よりもはるかに重要で耐摩耗性(Zn)よりも重要である．潤滑油だけが灰の原因ではなく，エンジンの摩耗要素(および後処理)や燃料の不純物の可能性もある． |
| 抄録（英） | In order to meet the particulate emission targets (6 x 1011 #/km), some gasoline direct injection (GDI) engines might require the use of particulate filters (GPF). The lifetime of wall-flow filters is influenced by the composition of the engine lubricant due to its potential to contribute to the ash accumulation in the GPF. Due to space constraints and to facilitate trapping and soot regeneration, a large number of GPFs will be in closed-coupled configuration. A study was carried out on an endurance test with a radio labelling method and conventional mass gain measurement to evaluate this GPF configuration, and verify the impact of metallic additives contained in the lubricant such as magnesium (Mg) and calcium (Ca) based detergent, a zinc (Zn) based anti-wear, and a molybdenum (Mo) based friction modifier. Two oils were evaluated, with two levels (0.85%-1.1%) of SAPS (Sulphated Ash, Phosphorus and Sulphur). In total, 4.5kg of oil were consumed for a global mass gain of the TWC and the GPF of 30g. The test methodology allowed to determine the laws of evolution of the GPF ash loading for each element monitored (Ca, Mg, Zn, Mo), based on the content of the element in the oil and oil consumption. This, in order to facilitate oil formulation and GPF sizing. This study also demonstrate that the main contributor is the detergent, far beyond Mo and Zn. The post-mortem ashes analysis showed that the lubricant is not the only contributor to the ashes, wear elements and fuel impurities are also involved. 翻訳 |
