Development of a technique for quantifying in-cylinder A/F ratio distribution using LIF image processing

✍ Scribed by Hiroko Hishinuma; Tomonori Urushihara; Akihiko Kakuho; Teruyuki Itoh

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 454 KB
• Volume: 17
• Category: Article
• ISSN: 0389-4304
• DOI: 10.1016/s0389-4304(96)00028-8

✦ Synopsis

Mixture formation in the cylinder greatly influences combustion. In this study, a system was developed for analyzing mixture formation by using LIF to visualize the formation process and image processing to quantify the air/fuel ratio distribution. Iso-octane was used as the fuel, DMA as the fluorescent tracer and a Kr-F excimer laser (wavelength of 248 nm) as the excitation light source. This system was used to visualize mixture formation in an engine with a tumble-type swirl control valve, and the effect of varying the fuel injection timing on mixture behavior and the A/F ratio distribution was examined.