Impact of Biomass-Derived Fuels on Soot Oxidation and DPF Regeneration Behavior

Fuel formulation effects on the soot morphology and diesel particulate filter regeneration in a future optimized high-efficiency combustion system

“…The advantage of PF is mainly due to their aromatic-free paraffinic structures. 47–50 In case of 2-MTHF/DBE, its higher soot reduction potential could be attributed to three main favorable properties such as (1) absence of aromatics, (2) improved local air–fuel ratio due to higher oxygen content and favorable functionality of oxygen atom within the fuel molecular structure, and (3) the enhanced mixing due to high volatility and longer ignition delay. 1,44,47…”

“…[47][48][49][50] In case of 2-MTHF/DBE, its higher soot reduction potential could be attributed to three main favorable properties such as (1) absence of aromatics, (2) improved local air-fuel ratio due to higher oxygen content and favorable functionality of oxygen atom within the fuel molecular structure, and (3) the enhanced mixing due to high volatility and longer ignition delay. 1,44,47 Soot oxidation kinetics in DPF Figure 10 depicts the magnified view of the Arrhenius plots of all the investigated fuels with soot-O 2 reaction. The results indicate that the activation energy of 2-MTHF/DBE soot oxidation for soot-O 2 reaction decreases ;9 kJ/mol as compared to EN 590 diesel soot.…”

Methods and techniques for the assessment of vehicular exhaust particulate emissions using alternative fuels and advanced emission control systems

“…The few cases on DPF-equipped vehicles mainly refer to Euro 5 cars/engines (Lapuerta et al, 2012;Rose et al, 2014) or experimental Euro 6-compliant engines and test set-ups (Bhardwaj et al, 2013), but no clear evidence οn market Euro 6 vehicles is available. Compared to Euro 5, Euro 6 vehicles are equipped with more advanced aftertreatment systems, including deNOx control and optimized DPFs.…”

“…acetylene) formation. The lower carbon content (Rose et al, 2010;Nabi et al, 2017) and aromatics of FAME blends (Bhardwaj et al, 2013;Fiebig et al, 2014) compared to fossil diesel, can also justify the reduction of particulate emissions. GMD decrease with FAME blends is due to the reduction of soot and consequently of accumulation mode particles due to fuel-bound oxygen and low aromatics content (Tinsdale et al, 2010;Suh and Lee, 2016).…”

“…Rose et al (2014) exhibited that DPF active regeneration intervals can be doubled if a B50 fuel is used instead of fossil diesel. This can be attributed to the lower engine-out particulate emissions and the higher oxidation of soot from biodiesel blends over normal operation during two consecutive regenerations; both these factors decrease the rate of soot accumulation in the DPF (Lapuerta et al, 2012;Bhardwaj et al, 2013).…”