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  • Summary & Details

Impacts of Hydrogen and Carbon Dioxide Addition on Knock Resistance of Methane-based Fuels

メタンベース燃料の耐ノック性に対する水素および二酸化炭素添加の影響

Detailed Information

Category(J)研究論文

Translation

Category(E)Research Paper
Author(J)1) 田中 大樹, 2) 小林 和伸, 3) 佐古 孝弘, 4) 桑原 一成, 5) 川那辺 洋, 6) 石山 拓二
Author(E)1) Hiroki Tanaka, 2) Kazunobu Kobayashi, 3) Takahiro Sako, 4) Kazunari Kuwahara, 5) Hiroshi Kawanabe, 6) Takuji Ishiyama
Affiliation(J)1) 大阪ガス, 2) 大阪ガス, 3) 大阪ガス, 4) 大阪工業大学, 5) 京都大学, 6) 京都大学
Abstract(J)メタンに対し水素および二酸化炭素を添加した際の火花点火機関のノック特性を実機運転により調査した。水素と二酸化炭素を同じ体積割合でメタンに添加した三成分メタンベース燃料は、メタンの体積割合に寄らず、同一の耐ノック性を示す。その原因について化学反応および燃料の熱物性の面から考察した。

Translation

Abstract(E)Impacts of hydrogen and carbon dioxide addition on knock resistance of methane-based fuels were investigated with a view to rationalize the improving effect of steam reforming of natural gas on methane number. Addition of hydrogen and carbon dioxide with a same volumetric amount to methane showed no impact on the knock resistance of fuels regardless of a volumetric proportion of methane. This is due to the fact that shortening effect of hydrogen on the ignition delay time and decreasing effect of carbon dioxide on specific heat ratio, which suppresses temperature increase in the unburned gas temperature, cancel out each other.

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