Diesel CNG - The Potential of a Dual Fuel Combustion Concept for Lower CO2 and Emissions

2015 ◽  
Author(s):  
Hans Juergen Manns ◽  
Maximilian Brauer ◽  
Holger Dyja ◽  
Hein Beier ◽  
Alexander Lasch
Keyword(s):  
Fuel Combustion ◽  
Dual Fuel ◽  
Dual Fuel Combustion

Mapping the combustion modes of a dual-fuel compression ignition engine

2021 ◽  
pp. 146808742110183
Author(s):  
Jonathan Martin ◽  
André Boehman
Keyword(s):  
Direct Injection ◽  
Fuel Combustion ◽  
Dual Fuel ◽  
Compression Ignition ◽  
Compression Ignition Engine ◽  
Combustion Modes ◽  
Si Engines ◽  
Dual Fuel Combustion ◽  
Soot Emissions ◽  
Ci Engines

Compression-ignition (CI) engines can produce higher thermal efficiency (TE) and thus lower carbon dioxide (CO2) emissions than spark-ignition (SI) engines. Unfortunately, the overall fuel economy of CI engine vehicles is limited by their emissions of nitrogen oxides (NOx) and soot, which must be mitigated with costly, resource- and energy-intensive aftertreatment. NOx and soot could also be mitigated by adding premixed gasoline to complement the conventional, non-premixed direct injection (DI) of diesel fuel in CI engines. Several such “dual-fuel” combustion modes have been introduced in recent years, but these modes are usually studied individually at discrete conditions. This paper introduces a mapping system for dual-fuel CI modes that links together several previously studied modes across a continuous two-dimensional diagram. This system includes the conventional diesel combustion (CDC) and conventional dual-fuel (CDF) modes; the well-explored advanced combustion modes of HCCI, RCCI, PCCI, and PPCI; and a previously discovered but relatively unexplored combustion mode that is herein titled “Piston-split Dual-Fuel Combustion” or PDFC. Tests show that dual-fuel CI engines can simultaneously increase TE and lower NOx and/or soot emissions at high loads through the use of Partial HCCI (PHCCI). At low loads, PHCCI is not possible, but either PDFC or RCCI can be used to further improve NOx and/or soot emissions, albeit at slightly lower TE. These results lead to a “partial dual-fuel” multi-mode strategy of PHCCI at high loads and CDC at low loads, linked together by PDFC. Drive cycle simulations show that this strategy, when tuned to balance NOx and soot reductions, can reduce engine-out CO2 emissions by about 1% while reducing NOx and soot by about 20% each with respect to CDC. This increases emissions of unburnt hydrocarbons (UHC), still in a treatable range (2.0 g/kWh) but five times as high as CDC, requiring changes in aftertreatment strategy.

Extending the potential of the dual-mode dual-fuel combustion towards the prospective EURO VII emissions limits using gasoline and OMEx

2021 ◽  
Vol 233 ◽  
pp. 113927
Author(s):  
Vicente Macián ◽  
Javier Monsalve-Serrano ◽  
David Villalta ◽  
Álvaro Fogué-Robles
Keyword(s):  
Fuel Combustion ◽  
Dual Fuel ◽  
Dual Mode ◽  
Dual Fuel Combustion

scholarly journals Effects of ethane addition on diesel-methane dual-fuel combustion in a heavy-duty engine

Fuel ◽  
2021 ◽  
Vol 289 ◽  
pp. 119834
Author(s):  
Zeeshan Ahmad ◽  
Ossi Kaario ◽  
Shervin Karimkashi ◽  
Cheng Qiang ◽  
Ville Vuorinen ◽  
...  
Keyword(s):  
Fuel Combustion ◽  
Dual Fuel ◽  
Heavy Duty ◽  
Dual Fuel Combustion

Experimental Investigation of the Natural Gas / Diesel Dual-Fuel Combustion Using a Rapid Compression Machine

2011 ◽  
Author(s):  
Julio C. C. Eg\ausquiza ◽  
Sergio L. Braga ◽  
Carlos V. M. Braga ◽  
Antonio C. S. Villela ◽  
Newton R. Moura
Keyword(s):  
Experimental Investigation ◽  
Natural Gas ◽  
Fuel Combustion ◽  
Dual Fuel ◽  
Rapid Compression Machine ◽  
Dual Fuel Combustion ◽  
Rapid Compression

New Dual-fuel Combustion Process for Passenger Car Engines

MTZ worldwide ◽  
2018 ◽  
Vol 79 (6) ◽  
pp. 60-67
Author(s):  
Florian Sprenger ◽  
Paul Fasching ◽  
Christina Granitz ◽  
Helmut Eichlseder
Keyword(s):  
Combustion Process ◽  
Fuel Combustion ◽  
Dual Fuel ◽  
Passenger Car ◽  
Dual Fuel Combustion
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