Title: A comprehensive review: role of fuel injection methodologies on performance enhancement and mitigation of emissions in the diesel engine

Authors: Krishnamani Selvaraj

Addresses: School of Mechanical Engineering, SASTRA University, Thanjavur – 613401, India

Abstract: The compression ignition engines are extremely significant in the field of energy, transport, and agriculture owing to their reliability and efficiency. The engines, on the other hand, are a major source of greenhouse gases and toxic emissions. According to global emission guidelines for sustaining a healthy environment, the measures needed to decrease pollution are of utmost important. Recent developments in diesel engines, notably in the fuel injection system, have made it possible to achieve the required levels of controlled emissions. Adopting the right fuel injection techniques, which significantly improve combustion quality, has resulted in a potential improvement in engine performance with regulated emissions in diesel engines. Delivering the fuel with higher 'fuel injection pressure' into the combustion chamber could reduce the carbon monoxide and particulate emissions with minimum 'specific fuel consumption' but the approach is not effective in controlling oxides of nitrogen emissions. On the other hand, the other fuel injection techniques like pilot injection and 'split injection' with optimised 'injection timing' help in reducing NO_X emission from the engines with better power output. This review article focuses on a detailed study of various fuel injection techniques along with advantages for improving engine performance and reducing exhaust emissions. [Received: August 18, 2023; Accepted: November 17, 2023]

Keywords: compression ignition engine; fuel injection pressure; FIP; electronic fuel injection; EFI; brake thermal efficiency; brake specific energy consumption; split/multiple injection; fuel injection timing; FIT.

DOI: 10.1504/IJOGCT.2024.140281

International Journal of Oil, Gas and Coal Technology, 2024 Vol.36 No.2, pp.219 - 243

Received: 15 Aug 2023
Accepted: 17 Nov 2023
Published online: 01 Aug 2024 *

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