Methods to Investigate the Importance of eFuel Properties for Enhanced Emission and Mixture Formation

Villforth, Jonas; Kulzer, André; Deeg, Hans-Peter; Vacca, Antonino; Rossi, E.; Cupo, Francesco; Chiodi, Marco; Bargende, Michael

doi:10.4271/2021-24-0017

Cited by 11 publications

(1 citation statement)

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“…Currently, Porsche is leading efforts in advancing synthetic hydrocarbons in the form of Fischer-Tropsch gasoline. [5][6][7] One benefit of this effort is that the fuel properties of the synthetic gasoline can be tailored. Overall, producing renewable liquid fuel in areas with high green energy potential and low population density is an effective way to harvest and store green energy in a high volume-and mass-density fashion.…”

Section: Introductionmentioning

confidence: 99%

Mixing controlled compression ignition with methanol: An experimental study of injection and EGR strategy

Gainey

Gandolfo

Yan

et al. 2022

International Journal of Engine Research

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Methanol is a fuel that can be produced using renewable electricity, green hydrogen, and a carbon-neutral carbon source. As a low-carbon liquid fuel, methanol is a leading candidate as a drop-in replacement fuel for rapid decarbonization of the transportation sector. In this work, methanol is tested experimentally in mixing-controlled compression ignition using a single-cylinder research engine. Specifically, the impact of a double injection strategy and high exhaust gas recirculation (EGR) dilution on performance and emissions parameters are studied. As a single-carbon, oxygenated fuel, methanol has a near-zero sooting potential, meaning there is no soot-NOx tradeoff as EGR dilution is increased. EGR dilution effectively reduces NOx emissions without a significant combustion efficiency or thermal efficiency penalty until the global equivalence ratio exceeds 0.9, at which point, a significant combustion efficiency penalty is incurred in the form of increased CO emissions. If stoichiometric operation with high EGR dilution is considered, engine-out NOx emissions are low, even at very high loads, and NOx aftertreatment is simplified through the use of a three-way catalyst. However, a relative decrease in the net fuel conversion efficiency of up to 8.5% was observed, demonstrating an emissions-efficiency tradeoff. Under lean and stoichiometric conditions, no appreciable agglomeration of particulate matter was observed.

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Section: Introductionmentioning

confidence: 99%