scholarly journals Study of dual-fuel (diesel + natural gas) particle matter and CO2 emissions of a heavy-duty diesel engine during transient operation

2013 ◽  
Vol 153 (2) ◽  
pp. 3-11
Author(s):  
Pedro Barroso ◽  
Xavier Ribas ◽  
Mario Pita ◽  
Judith Do
Keyword(s):  
Diesel Engine ◽  
Natural Gas ◽  
Dual Fuel ◽  
Transient Operation ◽  
Heavy Duty ◽  
Particle Matter ◽  
Heavy Duty Diesel Engine ◽  
Unburned Hydrocarbons ◽  
Heavy Duty Diesel ◽  
The Impact

The aim of this study is to describe the impact on particle matter and co 2 emissions of converting an existing heavy-duty diesel engine for on-highway truck applications to a dual-fuel engine (diesel + natural gas), especially in transient operation. A dual-fuel engine with homogeneous gas charge injection in the intake line before turbocharger was considered. The results showed the feasibility of this kind of technology for transient operation reaching a significant reduction of particle matter plus a decrement in co 2 emissions at the expense of a small decrement of brake fuel conversion efficiency and an increment of unburned hydrocarbons in the exhaust gases.

Characteristics of Exhaust Emissions from a Heavy-Duty Diesel Engine Retrofitted to Operate in Methane/Diesel Dual-Fuel Mode

2013 ◽  
Author(s):  
Alessandro Cozzolini ◽  
Daniele Littera ◽  
Ross Ryskamp ◽  
John Smallwood ◽  
Marc Besch ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Exhaust Emissions ◽  
Dual Fuel ◽  
Heavy Duty ◽  
Heavy Duty Diesel Engine ◽  
Heavy Duty Diesel

Impact of military JP-8 fuel on heavy-duty diesel engine performance and emissions

2007 ◽  
Vol 221 (8) ◽  
pp. 957-970 ◽  
Author(s):  
G Fernandes ◽  
J Fuschetto ◽  
Z Filipi ◽  
D Assanis ◽  
H McKee
Keyword(s):  
Particulate Matter ◽  
Diesel Engine ◽  
Fuel Economy ◽  
Engine Performance ◽  
Heavy Duty ◽  
Heavy Duty Diesel Engine ◽  
Performance And Emissions ◽  
Heavy Duty Diesel ◽  
Engine Performance And Emissions ◽  
The Impact

Investigating the impact of jet fuel on diesel engine performance and emissions is very important for military vehicles, due to the US Army Single Fuel Forward Policy mandating that deployed vehicles must refuel with aviation fuel JP-8. There is a known torque and fuel economy penalty associated with the operation of a diesel engine with JP-8 fuel, due to its lower density and viscosity. On the other hand, a few experimental studies have suggested that kerosene-based fuels have the potential for lowering exhaust emissions, especially particulate matter, compared to diesel fuel #2 (DF-2). However, studies so far have typically focused on quantifying the effects of simply replacing the regular DF-2 with JP-8, rather than fully investigating the reasons behind the observed differences. This research evaluates the effect of using JP-8 fuel in a heavy-duty diesel engine on fuel injection, combustion, performance, and emissions, and subsequently utilizes the obtained insight to propose changes to the engine calibration to mitigate the impact of the trade-offs. Experiments were carried out on a Detroit Diesel Corporation (DDC) S60 engine outfitted with exhaust gas recirculation (EGR). The results indicate that torque and fuel economy of diesel fuel can be matched, without smoke or NO x penalty, by increasing the duration of injection to compensate for the lower fuel density. The lower cetane number of JP-8 caused an increased ignition delay and increased premixed combustion, and their cumulative effect led to relatively unchanged combustion phasing. Under almost all conditions, JP-8 led to lower NO x and particulate matter (PM) emissions and shifted the NO x-PM trade-off favourably.

The Impact Upon Durability of Heavy-Duty Diesel Engine Using 5 Percentage Biodiesel

2013 ◽  
Vol 6 (1) ◽  
pp. 241-250 ◽  
Author(s):  
Yong-Yuan Ku ◽  
Ko Wei Lin ◽  
Ya-Lun Chen ◽  
Ching-Fu Liao
Keyword(s):  
Diesel Engine ◽  
Heavy Duty ◽  
Heavy Duty Diesel Engine ◽  
Heavy Duty Diesel ◽  
The Impact
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