1986-09-01

Effects of Combustion and Injection Systems on Unburnt HC and Particulate Emissions from a DI Diesel Engine 861232

This paper is a systematic investigation of the effects of combustion and injection systems on hydrocarbon(HC) and particulate emissions from a DI diesel engine. Piston cavity diameter, swirl ratio, number of injection nozzle openings, and injection direction are varied as the experimental parameters, and the constituents in the soluble organic fraction (SOF) of the particulate were analyzed.
The results show that the emission characteristics of deep dish chambers greatly differ from those of shallow dish chambers varying with the number of nozzle openings, the injection direction, and swirl intensity. The HC analysis shows mainly low carbon number gaseous HC constituents, and there is a tendency towards increasing polynucleation of polynuclear aromatic hydrocarbon(PAH) in SOF with increasing soot formation. Additionally it was found that the particulate concentration can be expressed as an exponential function of the Bosch smoke density for a wide range of engine combustion conditions.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Development Potential of High Speed DI Diesel Engines

881208

View Details

TECHNICAL PAPER

Emission Comparison of DDC 6V-92TA on Alcohol Fuels

902234

View Details

TECHNICAL PAPER

Smoke Reduction Effects by Post Injection for Various Injection Parameters and Combustion Chamber Shapes in a Diesel Engine

2014-01-2634

View Details

X