ディーゼル噴霧の体積と濃度におよぼす壁面衝突の影響

フォーマット:

論文

責任表示:

高, 炅男 ; 樅山, 智裕 ; 新井, 雅隆

言語:

日本語

出版情報:

日本機械学会, 2001-10-25

著者名:

• 高, 炅男
• 樅山, 智裕
• 新井, 雅隆

掲載情報:

日本機械学會論文集. B編

ISSN:

0387-5016    

巻:

67

通号:

662

開始ページ:

2604

終了ページ:

2610

バージョン:

VoR

概要:

application/pdf<br />Journal Article<br />Diesel spray impinged normally on a flat wall was investigated. Spray tip penetration and spray volumes of before and after impingement were measured on high speed photographs of the sprays which were injected by a single shot injection system into a high pressure chamber of cold state. The effects of the spray tip penetration, spray volume, entrainment mass and air-fuel ratio were discussed on the sprays of … before and after impingement. The volume of the post-impingement spray was calculated using axi-symmetrical model. It was greatly affected by the distance between the injection nozzle and the wall. When the impingement distance was shorter than the break-up length of the original spray, the entrainment mass as well as the volume of post-impingement spray was the larger than that of the original spray at the same inspection time. To calculate the average spray concentration of after impingement spray, the fuel film stuck on the wall was measured. The average air-fuel ratio of the impingement spray increased faster than the free spray because the spray concentration in a space decreased by the fuel stuck on the wall. 続きを見る