File(s) not publicly available

Reason: This item is currently closed access.

Un-throttling a direct injection gasoline homogeneous mixture engine with variable valve actuation

journal contribution
posted on 02.10.2013 by R. Patel, N. Ladommatos, Phillip A. Stansfield, Graham Wigley, Colin Garner, Graham Pitcher, James W.G. Turner, H. Nuglisch, J. Helie
Two direct injection spark ignition (DISI) engines with identical combustion chamber geometries and fuel injection systems were used to investigate fuel economy, exhaust emissions, the in-cylinder flow field, the fuel spray behaviour and combustion characteristics with early inlet valve closure (EIVC) strategies aimed at reducing parasitic induction work owing to throttling. One engine had extensive optical access through a transparent piston crown and transparent cylinder liner, while the other all-metal engine allowed continuous running. Engine running focused at low and intermediate engine loads (∼ 3 and ∼ 6 bar indicated mean effective pressure) and two engine speeds (2000 and 3500 r/min). The results show that the indicated specific fuel consumption (ISFC) could be reduced by almost 6 per cent without significant deterioration in gaseous exhaust pollutant emissions. The results also show that the in-cylinder bulk flow and turbulence and the thermodynamic conditions during combustion are affected significantly by EIVC operation.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Citation

PATEL, R. ... et al., 2010. Un-throttling a direct injection gasoline homogeneous mixture engine with variable valve actuation. International Journal of Engine Research, 11 (6), pp. 391 - 411.

Publisher

SAGE Publications Ltd. © Institution of Mechanical Engineers

Version

VoR (Version of Record)

Publication date

2010

Notes

Closed access. This article was published in the International Journal of Engine Research [SAGE Publications Ltd. © Institution of Mechanical Engineers] and the definitive version is available at: http://dx.doi.org/10.1243/14680874JER604

ISSN

1468-0874

Language

en

Exports