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  • Summary & Details

A Study on Combustion Improvement in Dual-Fuel Engine for Biogas Applications.

バイオガス対応デュアルフューエル機関の燃焼改善に関する研究

Detailed Information

Author(J)1) 本田 祐介, 2) 壽 和輝, 3) 湯川 洋史, 4) 右田 一雄
Author(E)1) Yusuke Honda, 2) Kazuteru Toshinaga, 3) Hirofumi Yukawa, 4) Kazuo Migita
Affiliation(J)1) ヤンマーホールディングス(株)中央研究所, 2) ヤンマーホールディングス(株)中央研究所, 3) ヤンマーパワーテクノロジー(株), 4) ヤンマーエネルギーシステム(株)
Affiliation(E)1) Yanmar Holdings Co., Ltd, 2) Yanmar Holdings Co., Ltd, 3) YANMAR POWER TECHNOLOGY CO., LTD., 4) YANMAR ENERGY SYSTEM CO.,LTD.
Abstract(J)メタン発酵により得られるバイオガスは二酸化炭素等の不活性ガスを多く含むため,これをガスエンジンの燃料として用いる場合には,不活性ガスが及ぼす影響を考慮する必要がある.本研究では,パイロット着火式ガスエンジンを対象に,任意量の二酸化炭素を給気に混合し,燃焼に与える影響を調べるとともに改善手段を検討した.その結果,実バイオガス相当の混合条件において,天然ガス燃料使用時同等の性能を達成したので報告する.

Translation

Abstract(E)The biogas produced by methane fermentation contains a high fraction of inert gases such as carbon dioxide, so it is necessary to consider the effect of carbon dioxide on ignition and combustion characteristics of diesel fuel pilot-ignited dual fuel natural gas engines when using the biogas as a main fuel. In this study, firstly the effect of carbon dioxide on combustion and engine performance such as thermal efficiency and NOx emission were investigated by mixing the carbon dioxide in the intake mixture. Secondly several countermeasures to improve the combustion and engine performance are discussed. As a result, the same performance as that of original engine fueled with natural gas were achieved under the condition of carbon dioxide mixture equivalent to actual biogas.

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