Title: Effect of pilot injection and injection pressure on combustion, performance, exergy and exhaust emission of a bioethanol-diesel fuelled common-rail direct injection engine
Authors: Subrata Bhowmik; Nirupam Pal; Abhishek Paul; Rajsekhar Panua
Addresses: Department of Mechanical Engineering, IIT (ISM), Dhanbad, India ' Department of Mechanical Engineering, NIT, Agartala, India ' Department of Mechanical Engineering, NIT, Silchar, India ' Department of Mechanical Engineering, NIT, Agartala, India
Abstract: The present investigation explores the exergy-energy potentials of a CRDI engine fuelled by bioethanol-diesel blends at different pilot fuel mass share, injection pressures and load conditions. Two blends with 5 and 10% bioethanol are chosen for engine testing with 0%, 10% and 20% pilot injection and at 300 bar and 500 bar injection pressure for 50%, 75% and 100% load conditions. The result showed a 6.3% higher brake thermal efficiency, 4.12% lower oxides of nitrogen at 50% load, 5% (by volume) bioethanol blend and with 10% pilot fuel.
Keywords: bioethanol; pilot fuel strategy; exergy; combustion; emission.
International Journal of Exergy, 2022 Vol.37 No.4, pp.393 - 411
Received: 26 Jan 2021
Accepted: 28 Jun 2021
Published online: 08 Apr 2022 *