scholarly journals CFD MODELLING AND VALIDATION OF COMBUSTION IN DIRECT INJECTION COMPRESSION IGNITION ENGINE FUELLED WITH JATROPHA OIL BLENDS WITH DIESEL

2014 ◽  
Vol 5 ◽  
Author(s):  
Biswajit De ◽  
Rajsekhar Panua
Keyword(s):  
Direct Injection ◽  
Compression Ignition ◽  
Jatropha Oil ◽  
Cfd Modelling ◽  
Compression Ignition Engine ◽  
Oil Blends

scholarly journals ALDEHYDE EMISSIONS FROM A STATIONARY DIESEL ENGINE OPERATING WITH CASTOR OIL BIODIESEL – DIESEL OIL BLENDS

2010 ◽  
Vol 9 (1-2) ◽  
pp. 35 ◽  
Author(s):  
P. B. Zarante ◽  
M. J. Da Silva ◽  
O. S. Valente ◽  
J. R. Sodré
Keyword(s):  
Diesel Engine ◽  
Castor Oil ◽  
Direct Injection ◽  
Diesel Oil ◽  
Exhaust Gas ◽  
Compression Ignition ◽  
Compression Ignition Engine ◽  
Oil Blends ◽  
Fuel Blends ◽  
Flame Ionization

The presence of aldehyde in the exhaust gas of a stationary, direct injection, compression ignition engine operating with castor oil biodiesel/diesel oil blends (B5, B10, B20 and B35) is analyzed. The diesel engine was operated with constant speed of 1800 rev/min and load of 37.5 kW. The gas sample was collected directly from the exhaust. Aldehydes were identified and quantified using gas chromatography (GC) with flame ionization detector analyzer (FID). Acetaldehyde presented higher exhaust concentration than formaldehyde for all fuel blends tested. In general, the exhaust aldehyde levels were very low and did not present significant differences between the fuel blends tested.

Performance and Emission Evaluation of a Diesel Engine Fuelled with Cashew Nut Shell Oil Blends

2014 ◽  
Vol 984-985 ◽  
pp. 893-899 ◽  
Author(s):  
S. Santhanakrishnan ◽  
S. Jose
Keyword(s):  
Diesel Engine ◽  
Direct Injection ◽  
Experimental Tests ◽  
Emission Characteristics ◽  
Compression Ignition ◽  
Compression Ignition Engine ◽  
Performance And Emission ◽  
Oil Blends ◽  
Cashew Nut ◽  
Cashew Nut Shell

This paper presents the properties and application of cashew nut shell oil as blend component for diesel in compression ignition engine. Experimental tests were carried out in a single cylinder, four stroke, direct injection, compression ignition engine fueled with cashew nut shell oil blends. During the experiments, the performance and emission characteristics of the diesel engine was analyzed and compared with the neat diesel fuel performance.

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.

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