Abstract
An experimental study of the jet characteristics of high pressure injected natural gas was investigated in a constant volume vessel using high speed photograph method. The jet characteristics under various injection conditions were measured by the schlieren photograph, and the overall excessive air ratio of the jets were calculated. The results showed that the jet development process can be divided into two parts, and they are the initial jet and the main jet. At the initial jet, the jet penetration increased rapidly with the increase of time, while in the main jet, the jet penetration increased linearly with the increase of time. Jet penetration, jet volume and jet overall excessive air ratio increased with the increase of time. Jet dispersion angle kept almost invariable during the jet developing process. Jet penetration, jet volume and jet overall excessive air ratio increased with the increase of injection pressure, while jet dispersion angle decreased with the increase of injection pressure. Jet penetration and jet volume decreased with the increase of the ambient pressure, while jet dispersion angle and jet overall excessive air ratio increased with the increase of the ambient pressure.
| Original language | English |
|---|---|
| Pages (from-to) | 500-504 |
| Number of pages | 5 |
| Journal | Neiranji Xuebao/Transactions of CSICE (Chinese Society for Internal Combustion Engines) |
| Volume | 25 |
| Issue number | 6 |
| State | Published - Nov 2007 |
| Externally published | Yes |
Keywords
- High pressure injection
- High speed photograph
- Jet characteristics
- Natural gas