Diesel Engine Combustion Control: Medium or Heavy EGR?

Experimental investigation of combustion, emissions and thermal balance of secondary butyl alcohol-gasoline blends in a spark ignition engine

“…Similar studies concerning the application of n-butanol-diesel fuel blends in diesel engines can be found in Refs. [38][39][40]. All of these findings confirmed that increasing the nbutanol blends reduced the soot and CO emissions.…”

Experimental assessment of the sudden-reversal of the oxygen dilution effect on soot production in coflow ethylene flames

“…These strategies are also shown to mitigate soot release due to the reduction of both peak temperature and ignition delay for high levels of EGR dilution in Diesel engines [4]. Fundamental processes underlying FGR or EGR strategies consist of recycling part of the combustion products, either on dry or wet basis, to the fuel and/or the oxidizer of the reacting flows.…”

“…Since soot exhibits a fairly short lifetime in the atmosphere on the order of days to weeks, the mitigation of soot emission has been considered as a near-term climate-change approach to gain time for implementations of long-term strategies [2]. As soot emitted by Internal Combustion (IC) engines contributes significantly to PM pollution in the air, innovative technologies especially designed for the reduction of soot emission have been a hot topic in IC engine related research in the last few decades [3][4][5].…”

Effects of 2,5-dimethylfuran fuel properties coupling with EGR (exhaust gas recirculation) on combustion and emission characteristics in common-rail diesel engines

“…LTC (Low-temperature combustion) with heavy EGR (exhaust gas recirculation) dilution (usually > 60%) has gained tremendous attention because NO x and soot formation areas are completely avoided, irrespective of local equivalence ratio as combustion temperature is below approximately 1650 K [5,7,8]. However, one of the hardest challenges for conventional LTC is that the use of heavy EGR inevitably results in serious penalties in THC and CO emissions.…”