Title: Assessment of performance, emission and combustion characteristics of dual-fuel engine with exhaust gas recirculation

Authors: Radha Krishna Gopidesi; Anjaneyulu Kancharla; Nagarjuna Kumma; Bhaskara Rao Pathakokila

Addresses: Department of Mechanical Engineering, Vignan's Lara Institute of Technology and Science, Vadlamudi, AP, PIN 522213, India ' Department of Mechanical Engineering, Vignan's Lara Institute of Technology and Science, Vadlamudi, AP, PIN 522213, India ' Department of Mechanical Engineering, Vignan's Lara Institute of Technology and Science, Vadlamudi, AP, PIN 522213, India ' Department of Mechanical Engineering, Vignan's Lara Institute of Technology and Science, Vadlamudi, AP, PIN 522213, India

Abstract: The present investigations were carried out on the common rail diesel injection (CRDI) engine in dual-fuel mode with exhaust gas recirculation. Biogas is one of the best alternatives for conventional fuel which has several benefits with limitations. In dual-fuel mode, biogas was injected from the inlet manifold at flow rates of 4 and 5 litres per minute (lpm) as a secondary fuel and diesel was used as the primary fuel. The biogas at 5 lpm consumption gave a 6.78% brake thermal efficiency higher than that of diesel fuel. Exhaust gas recirculation (EGR) was used in dual-fuel mode at a flow rate of 5 lpm of biogas. The use of NOX resulted in a drastic reduction of about 50% for the 5 lpm with 5% EGR when compared with other samples. However, it led to an increase in HC emissions due to lower heat release rate. In dual-fuel mode, the flow rate of 5 lpm produced the highest in-cylinder pressure of 71.1 bars at a crank angle of 366° and lowest in-cylinder pressure for 5 lpm with 5% EGR.

Keywords: biogas; dual-fuel; performance; emission; combustion.

DOI: 10.1504/PIE.2020.109848

Progress in Industrial Ecology, An International Journal, 2020 Vol.14 No.2, pp.116 - 125

Received: 13 May 2019
Accepted: 22 Oct 2019

Published online: 17 Sep 2020 *

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