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Research Papers: Fuel Combustion

Characterization of the Nonroad Modified Diesel Engine Using a Novel Entropy-VIKOR Approach: Experimental Investigation and Numerical Simulation

[+] Author and Article Information
Pushpendra Kumar Sharma

Department of Mechanical Engineering,
Malaviya National Institute of Technology,
JLN Marg, Malaviya Nagar,
Jaipur, Rajasthan 302017, India
e-mail: pushpendra.mech@mnit.ac.in

Dilip Sharma, Shyam Lal Soni, Amit Jhalani

Department of Mechanical Engineering,
Malaviya National Institute of Technology,
Jaipur 302017, India

1Corresponding author.

Contributed by the Internal Combustion Engine Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received September 27, 2018; final manuscript received January 18, 2019; published online February 21, 2019. Assoc. Editor: Stephen A. Ciatti.

J. Energy Resour. Technol 141(8), 082208 (Feb 21, 2019) (10 pages) Paper No: JERT-18-1739; doi: 10.1115/1.4042717 History: Received September 27, 2018; Revised January 18, 2019

Excessive use of diesel engines and continuous increase in environmental pollution has drawn the attention of researchers in the area of the compression ignition engine. In this research article, an innovative investigation of the nonroad modified diesel engine is reported with the effective use of the hybrid Entropy-VIKOR approach. Hence, it becomes necessary to prioritize and optimize the performance defining criteria, which provides higher BTE along with lower emission simultaneously. The engine load, injection timing (Inj Tim), injection pressure (Inj Pre), and compression ratio (Com R) were selected as engine operating parameters for experimentation at the constant speed of 1500 rpm engine. The effect on engine performance parameters (BTE and BSEC) and emission (carbon monoxide (CO), total oxide of carbon (TOC), oxides of nitrogen (NOx), hydrocarbon (HC), and smoke) was studied experimentally. The optimum results were observed at load 10.32 kg, Inj Tim 20 deg btdc, Inj Pre 210 bar, and Com R 21:1 at which highest BTE of 22.24% and lowest BSEC of 16,188.5 kJ/kWh were obtained. Hybrid entropy-VIKOR approach was applied to establish the optimum ranking of the nonroad modified diesel engine. The experimental results and numerical simulation show that optimizing the engine operating parameters using the entropy-VIKOR multicriteria decision-making (MCDM) technique is applicable.

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Figures

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Fig. 1

Schematic diagram of the experimental setup

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Fig. 2

Schematic diagram for changing the compression ratio

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Fig. 3

Modified cylinder block for varying the compression ratio

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Fig. 4

Assessment methodology of the hybrid entropy-VIKOR for the compromise solution

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Fig. 5

Different PDAs for studies of the nonroad modified diesel engine

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Fig. 6

Variation of experimental values of BTE, NOx, and smoke with alternatives

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Fig. 7

Performance, emission, and combustion curves for nonroad modified diesel engine: (a) variation of BTE and BSEC with load, (b) variation of CO and TOC with load, (c) variation of NOx and HC with load, (d) variation of smoke with load, (e)variationof rate of pressure rise with crank angle, and (f) variation of net heat release rate with crank angle

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