Influence of Pilot-Fueling and Nozzle-Opening Pressure on Performance and Tailpipe Emissions of WCO Biodiesel in a CRDi Engine

Lawrence Joseph Fernandes, C. R. Rajashekhar, T. M. Yunus Khan (), Syed Javed and Rahmath Ulla Baig
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Lawrence Joseph Fernandes: Mechanical Engineering Department, Mangalore Institute of Technology & Engineering, Visvesvaraya Technological University, Moodabidre 574225, Karnataka, India
C. R. Rajashekhar: Mechanical Engineering Department, Mangalore Institute of Technology & Engineering, Visvesvaraya Technological University, Moodabidre 574225, Karnataka, India
T. M. Yunus Khan: Department of Mechanical Engineering, College of Engineering, King Khalid University, Abha 61421, Saudi Arabia
Syed Javed: Department of Mechanical Engineering, College of Engineering, King Khalid University, Abha 61421, Saudi Arabia
Rahmath Ulla Baig: Department of Industrial Engineering, College of Engineering, King Khalid University, Abha 61421, Saudi Arabia

Sustainability, 2022, vol. 14, issue 18, 1-14

Abstract: Pilot-fueling and nozzle-injection pressure are significant injection parameters, and they have significant impacts on modern vehicles for enhancing the engine output, in addition to meeting rigorous tailpipe-exhaust emission standards. In this current work, the influence of the pilot-fueling pressure and nozzle-opening pressure (NOP) on the engine performance and tailpipe outcomes from a compression-ignition (CI) engine at a higher injection pressure and varying load conditions was investigated using a waste cooking oil (WCO) biodiesel (B20). The experiments were executed in a high-pressure CRDi-fitted diesel engine at the start of pilot fueling (SOPF) (timing: 23° bTDC), and at the start of the main fueling (SOMF) (timing: 33° bTDC). The results showed that the combined influence of the pilot-fueling and nozzle-opening pressure induced a remarkable enhancement in the BTE, by 25.13%, and the BSFC decreased by 13.88%, compared with diesel at 10% pilot fueling. Carbon monoxide, hydrocarbon, and smoke emissions were drastically reduced for the higher pilot-fueling quantity by 21.05%, 16.66%, and 33.10%, respectively, compared with the diesel at 10% pilot fueling. With the implementation of the pilot-fueling strategy, there is no effect on the NOx reduction.

Keywords: waste cooking oil; pilot-fuel injection; emission; performance (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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