The Influence of a Late In-Cylinder Air Injection on In-Cylinder Flow Measured with Particle Image Velocimetry (PIV)

Ekenberg, Martin; Reinmann, Raymond; Olofsson, Eric; Gillet, B.; Johansson, Bengt

doi:10.4271/2001-01-3492

Cited by 5 publications

(2 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They are easily seeded into the intake air and do not have any negative influence on the engine behavior, but cleaning of the intake manifold, piston rings, cylinder head and piston is necessary after a few measurements. A similar kind of approach using microspheres can be found in the papers by Towers and Towers (2004), Ekenberg et al (2001) and Nordgren et al (2003).…”

Section: High-speed Piv Setupmentioning

confidence: 92%

See 1 more Smart Citation

Pre- and post-injection flow characterization in a heavy-duty diesel engine using high-speed PIV

et al. 2012

View full text Add to dashboard Cite

High-speed particle image velocimetry (HS-PIV) using hollow microspheres has been applied to characterize the flow in a heavy-duty diesel engine during and after fuel injection. The injection timings were varied in the range representing those used in premixed charge compression ignition (PCCI) regimes, and multiple injections have been applied to investigate their influence on the flow inside the combustion chamber. By injecting into pure nitrogen, combustion is avoided and the flow can be studied long after injection. The results show a sudden change of air motion at the start of injection as a result of the air entrainment at the core of the spray. Furthermore, as expected, spray injection causes a considerable increase in the cycle-to-cycle fluctuations of the flow pattern, the more so for longer injection durations.

show abstract

Section: High-speed Piv Setupmentioning

confidence: 92%

“…Qualitative comparison of PIV with large eddy simulation (LES) data has been presented by Yu et al (2006). Fuel injection phenomena in a gasoline direct injection (GDI) engine was investigated using PIV by Ekenberg et al (2001) by injecting compressed air through the gasoline injector.…”

Section: Introductionmentioning

confidence: 99%