Collective influence of 1-decanol addition, injection pressure and EGR on diesel engine characteristics fueled with diesel/LDPE oil blends. (1st October 2020)

• Record Type: Journal Article
• Authors: Rajasekaran, S.; Damodharan, D.; Gopal, K.; Rajesh Kumar, B.; De Poures, Melvin Victor
• Is Part Of: Fuel. Volume 277(2020)
• Publication Date: 2020-10-01
• Subjects: ASTM American Society for Testing and Materials -- aTDC after top dead centre -- bTDC before top dead centre -- BMEP brake mean effective pressure -- BSEC brake specific energy consumption -- BTE brake thermal efficiency -- CA crank angle -- CCI calculated cetane index -- CO carbon monoxide -- CO2 carbon dioxide -- CRDi common rail direct injection -- D70L30 Diesel-70%, WLDPE oil-30% -- D70L20DEC10 Diesel-70%, WLDPE oil-20%, 1-decanol-10% -- ECU electronic control unit -- EGR exhaust gas recirculation -- FIP fuel injection pressure -- HC hydrocarbons -- HRR heat release rate -- LDPE low density polyethylene -- LHV low heating value -- MFB mass fraction burnt -- NOx nitrogen oxides -- SoC start of combustion -- WLDPE oil waste low density polyethylene oil -- ZSM-5 zeolite socony mobil–5; Plastics -- LDPE -- Waste to energy -- 1-Decanol -- Pyrolysis -- Diesel engine; Fuel -- Periodicals; Coal -- Periodicals; Coal; Fuel; Periodicals; 662.6
• DOI: 10.1016/j.fuel.2020.118166
• Languages: English
• ISSNs: 0016-2361

Abstract

Highlights: A blend of recycled fuel and renewable fuel was utilized in diesel engine. Collective influence of 1-decanol, fuel injection pressure and EGR on engine characteristics were studied. Best operating parameters were determined. Abstract: Plastic waste is abundant and its recovery to diesel-like fuel could reduce fossil fuel dependency and the associated risk of environmental pollution. In the present work, diesel-like fuel was produced from low-density polyethylene by catalytic pyrolysis method. Experiments were conducted to study the effect of substituting 10% vol. of 1-decanol in place of waste LDPE oil in D70L30 blend, under the influence of three injection pressures (400 bar, 500 bar, and 600 bar) and three EGR rates (0%, 10%, and 20%) on performance, combustion and emission characteristics of a CRDi engine at its rated power output. For this purpose, a ternary blend was prepared and the results were compared with diesel and D70L30 blend. Results reveal that, the substitution of 1-decanol in place of waste LDPE oil resulted in the shorter ignition delay period. The peak in-cylinder pressure and peak HRR dropped with increasing EGR rate and decreasing injection pressure. D70L20DEC10 injected at 600 bar with 0% and 10% EGR rates delivered 1.02% and 0.5% better BTE than D70L30 blend. NOx decreased by 112% when the EGR was increased from 0% to 20% at 400 bar FIP. It is concluded that the 1-decanol blend injected at 600 bar pressure and a low EGR rate of 10% gave the best possible performance and low emissions.