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An Experimental Investigation of Spray-Wall Interaction of Diesel Sprays

Alf Magnusson (Institutionen för tillämpad mekanik) ; Sven Andersson (Institutionen för tillämpad mekanik)
SAE World Congress 2009 (2009)
[Konferensbidrag, refereegranskat]

Wall wetting can occur irrespective of combustion concept in diesel engines, e.g. during the compression stroke. This action has been related to engine-out emissions in different ways, and an experimental investigation of impinging diesel sprays is thus made for a standard diesel fuel and a two-component model fuel (IDEA). The experiment was performed at conditions corresponding to those found during the compression stroke in a heavy duty diesel engine. The spray characteristics of two fuels were measured using two different optical methods: a Phase Doppler Particle Analyzer (PDPA) and high-speed imaging. A temperature controlled wall equipped with rapid, coaxial thermocouples was used to record the change in surface temperature from the heat transfer of the impinging sprays. This work demonstrated that the two different fuels used in the experiments have spray characteristics that behave in a similar way for a relatively wide range of air temperatures and air pressures, before and after wall impingement.



Denna post skapades 2009-01-24. Senast ändrad 2014-09-29.
CPL Pubid: 88884

 

Institutioner (Chalmers)

Institutionen för tillämpad mekanik

Ämnesområden

Övrig annan teknik

Chalmers infrastruktur