Browse Publications Technical Papers 2008-01-0639
2008-04-14

Development of Premixed Low-Temperature Diesel Combustion in a HSDI Diesel Engine 2008-01-0639

The pursuit of new combustion concepts or modes is ongoing to meet future emissions regulations and to eliminate or at least to minimize the burden of aftertreatment systems. In this research, Premixed Low Temperature Diesel Combustion (PLTDC) was developed using a single-cylinder engine to achieve low NOx and soot emissions while maintaining fuel efficiency. Operating conditions considered were 1500 rpm, 3 bar and 6 bar IMEP. The effects of injection timing, injection pressure, swirl ratio, EGR rate, and multiple injection strategies on the combustion process have been investigated.
The results show that low NOx and soot emissions can be obtained at both operating conditions without sacrificing the fuel efficiency.
Low NOx and soot emissions are achieved through minimization of peak temperatures during the combustion process and homogenization of in-cylinder air-fuel mixture.

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