Effects of low-pressure EGR on gaseous emissions and particle size distribution from a dual-mode dual-fuel (DMDF) concept in a medium-duty engine

•The EGR rate is the key to the dual-mode dual-fuel concept development.•The NOx and PM emissions are lower at dual-mode dual-fuel than conventional diesel.•Increasing EGR increases the accumulation-mode particles at dual-mode dual-fuel.•At high loads, the EGR increases the accumulation-mode particl...

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