A comparative performance and emission investigation CI engine fuelled with neem oil esters with varying engine compression ratios

Abstract

The current exploration of alternative fuels to conventional engines is tested on two fronts: the thermophysical property assessment and the other, real-time evaluation using engine testing using the fuel. The engine testing fueled with modified oils/esterified blends does give real-time analysis but at the cost of harmful emissions dumped into the polluted environment. The current work describes the use of possible simulations and the validity of simulation confirmed from real-time experimentation at varying engine compression ratios (CRs). Engine parameters were kept the same for simulations that were performed on the Diesel RK module and experimental analysis.Neem oil blends were prepared and tested for the composition of FFA and later the required properties were supplemented to software for possible thermal performance and emission detections. The thermal efficiency deviation observed between RK model and experimental values for CR 18 for Diesel, B20, B40, and Heat Transfer. 2022;51:7990-8004. wileyonlinelibrary.com/journal/htj B100 was 5.8%, 1.9%, 3.4%, and 2.1%, respectively, and for NOx, the deviation observed for Diesel, B20, B40, and B100 was 8.9% and 13.7%, 12.2% and 14.1%, and 9.4% and 11.1%, respectively. The peak HRR and cylinder pressures observed for software simulations and real-time experimental approaches did not vary much, but the peak values do differ by 6.7% and 4.7%, respectively.

An experimental study on optimum temperature of B20 POBD for higher efficiency and lower emissions of a DI diesel engine in lean and ultra‐lean combustion conditions

“…Therefore, CO emissions are evitable in Biodiesel combustion. 39,40 This could be troublemaker in cold-start and cold climate conditions. Under these conditions, the viscosity of biodiesel blend fuels increases significantly.…”

“…The main drawback of biodiesel fuels in general, and palm oil biodiesel as the most widely used biodiesel in particular, is the high viscosity and many researchers have stated that elevated density and viscosities of biodiesel fuels signify poor air‐fuel mixing, which highlights fractional burning during the combustion process. Therefore, CO emissions are evitable in Biodiesel combustion 39,40 . This could be troublemaker in cold‐start and cold climate conditions.…”

Developing a model for waste plastic biofuels in CRDi diesel engines using FTIR, GCMS, and WASPAS synchronisations for engine analysis

“…However, increasing the fuel blend beyond a certain point can lead to incomplete combustion due to the limited availability of oxygen, resulting in increased emissions of smoke, NOx, and CO, leading to a decrease in the performance index. In addition, by decreasing the load, i.e., the amount of power generated by the engine, can result in a more efficient combustion process by reducing the amount of unburnt fuel and decreasing BSFC (Srinidhi, Jawale, et al, 2022). This leads to an increase in BTE and a decrease in emissions of smoke, No x , and CO, resulting in an increase in the performance index.…”

Economic and environmental and energy investigation and reliability evaluation of renewable energy hybrid system

“…23 Chatur et al, 24 investigation of waste cooking oil-diesel blend with copper oxide additives as fuel for diesel engine under variations in compression ratio. In 2022, Srinidhi et al 25 presented a comparative performance and emission investigation CI engine fuelled with neem oil esters with varying engine compression ratios. Channapattana et al 26 investigated the Energy analysis of DI-CI engine with nickel oxide nanoparticle added azadirachta indica biofuel at different static injection timing based on exergy.…”