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LDVによる直接噴射式ディーゼル機関筒内乱れの計測


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Title: LDVによる直接噴射式ディーゼル機関筒内乱れの計測
Other Titles: Turbulence Measurements in a Direct Injection Diesel Engine by LDV
Authors: 植木, 弘信 / 石田, 正弘 / 江上, 弘孝
Authors (alternative): Ueki, Hironobu / Ishida, Masahiro / Egami, Hirotaka
Issue Date: 25-Mar-1989
Publisher: 日本機械学会
Citation: 日本機械学會論文集. B編 55(511) p.904-909, 1989
Abstract: The airflow was measured by a LDV in a motored four-stroke direct injection diesel engine with a troidal cavity combustion chamber, under three different swirl intensity condition. The turbulence scale was calculated by a random sample data analysis utilizing multicycle velocity data. It has been clearly demonstrated that even though the swirl intensity was varied, the integral time scale increased once at the beginning of the compression stroke and decreased toward compression top dead center. On the other hand, the micro time scale hardly changed in suction and compression strokes. Furthermore, it has been revealed that the axial micro time scale was almost uniform in the cylinder under the high swirl condition, but the integral time scale remained large near the piston cavity center.
Keywords: Internal Combustion Engine / Swirl / Turbulence / Flow Measurement / LDV
URI: http://hdl.handle.net/10069/6733
ISSN: 03875016
Type: Journal Article
Text Version: publisher
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/6733

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